Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 2 | /* |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 3 | * Command line editing. |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | 81fe123 | 2003-07-29 06:38:40 +0000 | [diff] [blame] | 5 | * Copyright (c) 1986-2003 may safely be consumed by a BSD or GPL license. |
Eric Andersen | 7467c8d | 2001-07-12 20:26:32 +0000 | [diff] [blame] | 6 | * Written by: Vladimir Oleynik <dzo@simtreas.ru> |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 7 | * |
| 8 | * Used ideas: |
| 9 | * Adam Rogoyski <rogoyski@cs.utexas.edu> |
| 10 | * Dave Cinege <dcinege@psychosis.com> |
| 11 | * Jakub Jelinek (c) 1995 |
Eric Andersen | 81fe123 | 2003-07-29 06:38:40 +0000 | [diff] [blame] | 12 | * Erik Andersen <andersen@codepoet.org> (Majorly adjusted for busybox) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 13 | * |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 14 | * This code is 'as is' with no warranty. |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 15 | */ |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 16 | /* |
Denis Vlasenko | 78ff819 | 2008-06-28 21:03:43 +0000 | [diff] [blame] | 17 | * Usage and known bugs: |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 18 | * Terminal key codes are not extensive, more needs to be added. |
| 19 | * This version was created on Debian GNU/Linux 2.x. |
Denis Vlasenko | 78ff819 | 2008-06-28 21:03:43 +0000 | [diff] [blame] | 20 | * Delete, Backspace, Home, End, and the arrow keys were tested |
| 21 | * to work in an Xterm and console. Ctrl-A also works as Home. |
| 22 | * Ctrl-E also works as End. |
| 23 | * |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 24 | * The following readline-like commands are not implemented: |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 25 | * CTL-t -- Transpose two characters |
| 26 | * |
Denis Vlasenko | 78ff819 | 2008-06-28 21:03:43 +0000 | [diff] [blame] | 27 | * lineedit does not know that the terminal escape sequences do not |
| 28 | * take up space on the screen. The redisplay code assumes, unless |
| 29 | * told otherwise, that each character in the prompt is a printable |
| 30 | * character that takes up one character position on the screen. |
| 31 | * You need to tell lineedit that some sequences of characters |
| 32 | * in the prompt take up no screen space. Compatibly with readline, |
| 33 | * use the \[ escape to begin a sequence of non-printing characters, |
| 34 | * and the \] escape to signal the end of such a sequence. Example: |
| 35 | * |
| 36 | * PS1='\[\033[01;32m\]\u@\h\[\033[01;34m\] \w \$\[\033[00m\] ' |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 37 | * |
| 38 | * Unicode in PS1 is not fully supported: prompt length calulation is wrong, |
| 39 | * resulting in line wrap problems with long (multi-line) input. |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 40 | */ |
Ron Yorston | f23264b | 2015-05-29 11:31:40 +0100 | [diff] [blame] | 41 | #include "busybox.h" |
| 42 | #include "NUM_APPLETS.h" |
Denys Vlasenko | 42a8fd0 | 2009-07-11 21:36:13 +0200 | [diff] [blame] | 43 | #include "unicode.h" |
Alexey Fomenko | 232ebaa | 2011-05-20 04:26:29 +0200 | [diff] [blame] | 44 | #ifndef _POSIX_VDISABLE |
| 45 | # define _POSIX_VDISABLE '\0' |
| 46 | #endif |
| 47 | |
Glenn L McGrath | 475820c | 2004-01-22 12:42:23 +0000 | [diff] [blame] | 48 | |
Glenn L McGrath | 3b25185 | 2004-01-03 12:07:32 +0000 | [diff] [blame] | 49 | #ifdef TEST |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 50 | # define ENABLE_FEATURE_EDITING 0 |
| 51 | # define ENABLE_FEATURE_TAB_COMPLETION 0 |
| 52 | # define ENABLE_FEATURE_USERNAME_COMPLETION 0 |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 53 | #endif |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 54 | |
Eric Andersen | 5165fbe | 2001-02-20 06:42:29 +0000 | [diff] [blame] | 55 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 56 | /* Entire file (except TESTing part) sits inside this #if */ |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 57 | #if ENABLE_FEATURE_EDITING |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 58 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 59 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 60 | #define ENABLE_USERNAME_OR_HOMEDIR \ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 61 | (ENABLE_FEATURE_USERNAME_COMPLETION || ENABLE_FEATURE_EDITING_FANCY_PROMPT) |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 62 | #define IF_USERNAME_OR_HOMEDIR(...) |
| 63 | #if ENABLE_USERNAME_OR_HOMEDIR |
| 64 | # undef IF_USERNAME_OR_HOMEDIR |
| 65 | # define IF_USERNAME_OR_HOMEDIR(...) __VA_ARGS__ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 66 | #endif |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 67 | |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 68 | |
| 69 | #undef CHAR_T |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 70 | #if ENABLE_UNICODE_SUPPORT |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 71 | # define BB_NUL ((wchar_t)0) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 72 | # define CHAR_T wchar_t |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 73 | static bool BB_isspace(CHAR_T c) { return ((unsigned)c < 256 && isspace(c)); } |
Denys Vlasenko | 31e2e7b | 2009-12-12 02:42:35 +0100 | [diff] [blame] | 74 | # if ENABLE_FEATURE_EDITING_VI |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 75 | static bool BB_isalnum_or_underscore(CHAR_T c) { |
| 76 | return ((unsigned)c < 256 && isalnum(c)) || c == '_'; |
| 77 | } |
Denys Vlasenko | 31e2e7b | 2009-12-12 02:42:35 +0100 | [diff] [blame] | 78 | # endif |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 79 | static bool BB_ispunct(CHAR_T c) { return ((unsigned)c < 256 && ispunct(c)); } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 80 | # undef isspace |
| 81 | # undef isalnum |
| 82 | # undef ispunct |
| 83 | # undef isprint |
| 84 | # define isspace isspace_must_not_be_used |
| 85 | # define isalnum isalnum_must_not_be_used |
| 86 | # define ispunct ispunct_must_not_be_used |
| 87 | # define isprint isprint_must_not_be_used |
| 88 | #else |
| 89 | # define BB_NUL '\0' |
| 90 | # define CHAR_T char |
| 91 | # define BB_isspace(c) isspace(c) |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 92 | # if ENABLE_FEATURE_EDITING_VI |
Denys Vlasenko | 82d1c1f | 2017-12-31 17:30:02 +0100 | [diff] [blame] | 93 | static bool BB_isalnum_or_underscore(CHAR_T c) |
| 94 | { |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 95 | return ((unsigned)c < 256 && isalnum(c)) || c == '_'; |
| 96 | } |
| 97 | # endif |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 98 | # define BB_ispunct(c) ispunct(c) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 99 | #endif |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 100 | #if ENABLE_UNICODE_PRESERVE_BROKEN |
| 101 | # define unicode_mark_raw_byte(wc) ((wc) | 0x20000000) |
| 102 | # define unicode_is_raw_byte(wc) ((wc) & 0x20000000) |
| 103 | #else |
| 104 | # define unicode_is_raw_byte(wc) 0 |
| 105 | #endif |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 106 | |
| 107 | |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 108 | #define ESC "\033" |
| 109 | |
| 110 | #define SEQ_CLEAR_TILL_END_OF_SCREEN ESC"[J" |
| 111 | //#define SEQ_CLEAR_TILL_END_OF_LINE ESC"[K" |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 112 | |
| 113 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 114 | enum { |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 115 | MAX_LINELEN = CONFIG_FEATURE_EDITING_MAX_LEN < 0x7ff0 |
Denis Vlasenko | 6b40443 | 2008-01-07 16:13:14 +0000 | [diff] [blame] | 116 | ? CONFIG_FEATURE_EDITING_MAX_LEN |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 117 | : 0x7ff0 |
| 118 | }; |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 119 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 120 | #if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 121 | static const char null_str[] ALIGN1 = ""; |
| 122 | #endif |
Erik Andersen | 1d1d950 | 2000-04-21 01:26:49 +0000 | [diff] [blame] | 123 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 124 | /* We try to minimize both static and stack usage. */ |
Denis Vlasenko | 5d89fba | 2008-04-22 00:08:27 +0000 | [diff] [blame] | 125 | struct lineedit_statics { |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 126 | line_input_t *state; |
Erik Andersen | 8ea7d8c | 2000-05-20 00:40:08 +0000 | [diff] [blame] | 127 | |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 128 | unsigned cmdedit_termw; /* = 80; */ /* actual terminal width */ |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 129 | |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 130 | unsigned cmdedit_x; /* real x (col) terminal position */ |
| 131 | unsigned cmdedit_y; /* pseudoreal y (row) terminal position */ |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 132 | unsigned cmdedit_prmt_len; /* on-screen length of last/sole prompt line */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 133 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 134 | unsigned cursor; |
Denys Vlasenko | 2f3f09c | 2009-09-29 00:00:12 +0200 | [diff] [blame] | 135 | int command_len; /* must be signed */ |
| 136 | /* signed maxsize: we want x in "if (x > S.maxsize)" |
Denys Vlasenko | 044b180 | 2009-07-12 02:50:35 +0200 | [diff] [blame] | 137 | * to _not_ be promoted to unsigned */ |
| 138 | int maxsize; |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 139 | CHAR_T *command_ps; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 140 | |
| 141 | const char *cmdedit_prompt; |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 142 | const char *prompt_last_line; /* last/sole prompt line */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 143 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 144 | #if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 145 | char *user_buf; |
| 146 | char *home_pwd_buf; /* = (char*)null_str; */ |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 147 | #endif |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 148 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 149 | #if ENABLE_FEATURE_TAB_COMPLETION |
| 150 | char **matches; |
| 151 | unsigned num_matches; |
| 152 | #endif |
| 153 | |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 154 | #if ENABLE_FEATURE_EDITING_WINCH |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 155 | unsigned SIGWINCH_saved; |
| 156 | volatile unsigned SIGWINCH_count; |
| 157 | volatile smallint ok_to_redraw; |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 158 | #endif |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 159 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 160 | #if ENABLE_FEATURE_EDITING_VI |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 161 | # define DELBUFSIZ 128 |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 162 | smallint newdelflag; /* whether delbuf should be reused yet */ |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 163 | CHAR_T *delptr; |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 164 | CHAR_T delbuf[DELBUFSIZ]; /* a place to store deleted characters */ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 165 | #endif |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 166 | #if ENABLE_FEATURE_EDITING_ASK_TERMINAL |
Denys Vlasenko | d83bbf4 | 2009-10-27 10:47:49 +0100 | [diff] [blame] | 167 | smallint sent_ESC_br6n; |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 168 | #endif |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 169 | |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 170 | #if ENABLE_FEATURE_EDITING_WINCH |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 171 | /* Largish struct, keeping it last results in smaller code */ |
| 172 | struct sigaction SIGWINCH_handler; |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 173 | #endif |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 174 | }; |
| 175 | |
Denis Vlasenko | 5d89fba | 2008-04-22 00:08:27 +0000 | [diff] [blame] | 176 | /* See lineedit_ptr_hack.c */ |
| 177 | extern struct lineedit_statics *const lineedit_ptr_to_statics; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 178 | |
Denis Vlasenko | 5d89fba | 2008-04-22 00:08:27 +0000 | [diff] [blame] | 179 | #define S (*lineedit_ptr_to_statics) |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 180 | #define state (S.state ) |
| 181 | #define cmdedit_termw (S.cmdedit_termw ) |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 182 | #define cmdedit_x (S.cmdedit_x ) |
| 183 | #define cmdedit_y (S.cmdedit_y ) |
| 184 | #define cmdedit_prmt_len (S.cmdedit_prmt_len) |
| 185 | #define cursor (S.cursor ) |
| 186 | #define command_len (S.command_len ) |
| 187 | #define command_ps (S.command_ps ) |
| 188 | #define cmdedit_prompt (S.cmdedit_prompt ) |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 189 | #define prompt_last_line (S.prompt_last_line) |
Denis Vlasenko | f7be20e | 2007-12-24 14:09:19 +0000 | [diff] [blame] | 190 | #define user_buf (S.user_buf ) |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 191 | #define home_pwd_buf (S.home_pwd_buf ) |
| 192 | #define matches (S.matches ) |
| 193 | #define num_matches (S.num_matches ) |
| 194 | #define delptr (S.delptr ) |
| 195 | #define newdelflag (S.newdelflag ) |
| 196 | #define delbuf (S.delbuf ) |
| 197 | |
| 198 | #define INIT_S() do { \ |
Denis Vlasenko | 5d89fba | 2008-04-22 00:08:27 +0000 | [diff] [blame] | 199 | (*(struct lineedit_statics**)&lineedit_ptr_to_statics) = xzalloc(sizeof(S)); \ |
Denis Vlasenko | 574f2f4 | 2008-02-27 18:41:59 +0000 | [diff] [blame] | 200 | barrier(); \ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 201 | cmdedit_termw = 80; \ |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 202 | IF_USERNAME_OR_HOMEDIR(home_pwd_buf = (char*)null_str;) \ |
Shawn J. Goff | 46031da | 2013-02-27 18:30:05 +0100 | [diff] [blame] | 203 | IF_FEATURE_EDITING_VI(delptr = delbuf;) \ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 204 | } while (0) |
Alexey Fomenko | 232ebaa | 2011-05-20 04:26:29 +0200 | [diff] [blame] | 205 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 206 | static void deinit_S(void) |
| 207 | { |
| 208 | #if ENABLE_FEATURE_EDITING_FANCY_PROMPT |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 209 | /* This one is allocated only if FANCY_PROMPT is on |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 210 | * (otherwise it points to verbatim prompt (NOT malloced)) */ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 211 | free((char*)cmdedit_prompt); |
| 212 | #endif |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 213 | #if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 214 | free(user_buf); |
| 215 | if (home_pwd_buf != null_str) |
| 216 | free(home_pwd_buf); |
| 217 | #endif |
Denis Vlasenko | 5d89fba | 2008-04-22 00:08:27 +0000 | [diff] [blame] | 218 | free(lineedit_ptr_to_statics); |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 219 | } |
| 220 | #define DEINIT_S() deinit_S() |
| 221 | |
Denis Vlasenko | 2c84495 | 2008-04-25 18:44:35 +0000 | [diff] [blame] | 222 | |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 223 | #if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 224 | static size_t load_string(const char *src) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 225 | { |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 226 | if (unicode_status == UNICODE_ON) { |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 227 | ssize_t len = mbstowcs(command_ps, src, S.maxsize - 1); |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 228 | if (len < 0) |
| 229 | len = 0; |
| 230 | command_ps[len] = BB_NUL; |
| 231 | return len; |
| 232 | } else { |
| 233 | unsigned i = 0; |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 234 | while (src[i] && i < S.maxsize - 1) { |
| 235 | command_ps[i] = src[i]; |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 236 | i++; |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 237 | } |
| 238 | command_ps[i] = BB_NUL; |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 239 | return i; |
| 240 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 241 | } |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 242 | static unsigned save_string(char *dst, unsigned maxsize) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 243 | { |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 244 | if (unicode_status == UNICODE_ON) { |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 245 | # if !ENABLE_UNICODE_PRESERVE_BROKEN |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 246 | ssize_t len = wcstombs(dst, command_ps, maxsize - 1); |
| 247 | if (len < 0) |
| 248 | len = 0; |
| 249 | dst[len] = '\0'; |
| 250 | return len; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 251 | # else |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 252 | unsigned dstpos = 0; |
| 253 | unsigned srcpos = 0; |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 254 | |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 255 | maxsize--; |
| 256 | while (dstpos < maxsize) { |
| 257 | wchar_t wc; |
| 258 | int n = srcpos; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 259 | |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 260 | /* Convert up to 1st invalid byte (or up to end) */ |
| 261 | while ((wc = command_ps[srcpos]) != BB_NUL |
| 262 | && !unicode_is_raw_byte(wc) |
| 263 | ) { |
| 264 | srcpos++; |
| 265 | } |
| 266 | command_ps[srcpos] = BB_NUL; |
| 267 | n = wcstombs(dst + dstpos, command_ps + n, maxsize - dstpos); |
| 268 | if (n < 0) /* should not happen */ |
| 269 | break; |
| 270 | dstpos += n; |
| 271 | if (wc == BB_NUL) /* usually is */ |
| 272 | break; |
| 273 | |
| 274 | /* We do have invalid byte here! */ |
| 275 | command_ps[srcpos] = wc; /* restore it */ |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 276 | srcpos++; |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 277 | if (dstpos == maxsize) |
| 278 | break; |
| 279 | dst[dstpos++] = (char) wc; |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 280 | } |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 281 | dst[dstpos] = '\0'; |
| 282 | return dstpos; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 283 | # endif |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 284 | } else { |
| 285 | unsigned i = 0; |
| 286 | while ((dst[i] = command_ps[i]) != 0) |
| 287 | i++; |
| 288 | return i; |
| 289 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 290 | } |
| 291 | /* I thought just fputwc(c, stdout) would work. But no... */ |
| 292 | static void BB_PUTCHAR(wchar_t c) |
| 293 | { |
Denys Vlasenko | 353680a | 2011-03-27 01:18:07 +0100 | [diff] [blame] | 294 | if (unicode_status == UNICODE_ON) { |
| 295 | char buf[MB_CUR_MAX + 1]; |
| 296 | mbstate_t mbst = { 0 }; |
| 297 | ssize_t len = wcrtomb(buf, c, &mbst); |
| 298 | if (len > 0) { |
| 299 | buf[len] = '\0'; |
| 300 | fputs(buf, stdout); |
| 301 | } |
| 302 | } else { |
| 303 | /* In this case, c is always one byte */ |
| 304 | putchar(c); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 305 | } |
| 306 | } |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 307 | # if ENABLE_UNICODE_COMBINING_WCHARS || ENABLE_UNICODE_WIDE_WCHARS |
| 308 | static wchar_t adjust_width_and_validate_wc(unsigned *width_adj, wchar_t wc) |
| 309 | # else |
| 310 | static wchar_t adjust_width_and_validate_wc(wchar_t wc) |
| 311 | # define adjust_width_and_validate_wc(width_adj, wc) \ |
| 312 | ((*(width_adj))++, adjust_width_and_validate_wc(wc)) |
| 313 | # endif |
| 314 | { |
| 315 | int w = 1; |
| 316 | |
| 317 | if (unicode_status == UNICODE_ON) { |
Denys Vlasenko | 26e2c1d | 2010-05-16 21:15:03 +0200 | [diff] [blame] | 318 | if (wc > CONFIG_LAST_SUPPORTED_WCHAR) { |
| 319 | /* note: also true for unicode_is_raw_byte(wc) */ |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 320 | goto subst; |
| 321 | } |
| 322 | w = wcwidth(wc); |
| 323 | if ((ENABLE_UNICODE_COMBINING_WCHARS && w < 0) |
| 324 | || (!ENABLE_UNICODE_COMBINING_WCHARS && w <= 0) |
| 325 | || (!ENABLE_UNICODE_WIDE_WCHARS && w > 1) |
| 326 | ) { |
| 327 | subst: |
| 328 | w = 1; |
| 329 | wc = CONFIG_SUBST_WCHAR; |
| 330 | } |
| 331 | } |
| 332 | |
| 333 | # if ENABLE_UNICODE_COMBINING_WCHARS || ENABLE_UNICODE_WIDE_WCHARS |
| 334 | *width_adj += w; |
| 335 | #endif |
| 336 | return wc; |
| 337 | } |
| 338 | #else /* !UNICODE */ |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 339 | static size_t load_string(const char *src) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 340 | { |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 341 | safe_strncpy(command_ps, src, S.maxsize); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 342 | return strlen(command_ps); |
| 343 | } |
Denys Vlasenko | 9038d6f | 2009-07-15 20:02:19 +0200 | [diff] [blame] | 344 | # if ENABLE_FEATURE_TAB_COMPLETION |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 345 | static void save_string(char *dst, unsigned maxsize) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 346 | { |
| 347 | safe_strncpy(dst, command_ps, maxsize); |
| 348 | } |
Denys Vlasenko | 7dd0ce4 | 2009-07-15 18:27:47 +0200 | [diff] [blame] | 349 | # endif |
| 350 | # define BB_PUTCHAR(c) bb_putchar(c) |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 351 | /* Should never be called: */ |
| 352 | int adjust_width_and_validate_wc(unsigned *width_adj, int wc); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 353 | #endif |
| 354 | |
| 355 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 356 | /* Put 'command_ps[cursor]', cursor++. |
| 357 | * Advance cursor on screen. If we reached right margin, scroll text up |
| 358 | * and remove terminal margin effect by printing 'next_char' */ |
Denis Vlasenko | 2c84495 | 2008-04-25 18:44:35 +0000 | [diff] [blame] | 359 | #define HACK_FOR_WRONG_WIDTH 1 |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 360 | static void put_cur_glyph_and_inc_cursor(void) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 361 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 362 | CHAR_T c = command_ps[cursor]; |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 363 | unsigned width = 0; |
| 364 | int ofs_to_right; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 365 | |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 366 | if (c == BB_NUL) { |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 367 | /* erase character after end of input string */ |
| 368 | c = ' '; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 369 | } else { |
| 370 | /* advance cursor only if we aren't at the end yet */ |
| 371 | cursor++; |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 372 | if (unicode_status == UNICODE_ON) { |
| 373 | IF_UNICODE_WIDE_WCHARS(width = cmdedit_x;) |
| 374 | c = adjust_width_and_validate_wc(&cmdedit_x, c); |
| 375 | IF_UNICODE_WIDE_WCHARS(width = cmdedit_x - width;) |
| 376 | } else { |
| 377 | cmdedit_x++; |
| 378 | } |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 379 | } |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 380 | |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 381 | ofs_to_right = cmdedit_x - cmdedit_termw; |
| 382 | if (!ENABLE_UNICODE_WIDE_WCHARS || ofs_to_right <= 0) { |
| 383 | /* c fits on this line */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 384 | BB_PUTCHAR(c); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 385 | } |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 386 | |
| 387 | if (ofs_to_right >= 0) { |
| 388 | /* we go to the next line */ |
Denis Vlasenko | 2c84495 | 2008-04-25 18:44:35 +0000 | [diff] [blame] | 389 | #if HACK_FOR_WRONG_WIDTH |
| 390 | /* This works better if our idea of term width is wrong |
| 391 | * and it is actually wider (often happens on serial lines). |
| 392 | * Printing CR,LF *forces* cursor to next line. |
| 393 | * OTOH if terminal width is correct AND terminal does NOT |
| 394 | * have automargin (IOW: it is moving cursor to next line |
| 395 | * by itself (which is wrong for VT-10x terminals)), |
| 396 | * this will break things: there will be one extra empty line */ |
| 397 | puts("\r"); /* + implicit '\n' */ |
| 398 | #else |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 399 | /* VT-10x terminals don't wrap cursor to next line when last char |
| 400 | * on the line is printed - cursor stays "over" this char. |
| 401 | * Need to print _next_ char too (first one to appear on next line) |
| 402 | * to make cursor move down to next line. |
| 403 | */ |
| 404 | /* Works ok only if cmdedit_termw is correct. */ |
| 405 | c = command_ps[cursor]; |
| 406 | if (c == BB_NUL) |
| 407 | c = ' '; |
| 408 | BB_PUTCHAR(c); |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 409 | bb_putchar('\b'); |
Denis Vlasenko | 2c84495 | 2008-04-25 18:44:35 +0000 | [diff] [blame] | 410 | #endif |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 411 | cmdedit_y++; |
| 412 | if (!ENABLE_UNICODE_WIDE_WCHARS || ofs_to_right == 0) { |
| 413 | width = 0; |
| 414 | } else { /* ofs_to_right > 0 */ |
| 415 | /* wide char c didn't fit on prev line */ |
| 416 | BB_PUTCHAR(c); |
| 417 | } |
| 418 | cmdedit_x = width; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 419 | } |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 420 | } |
| 421 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 422 | /* Move to end of line (by printing all chars till the end) */ |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 423 | static void put_till_end_and_adv_cursor(void) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 424 | { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 425 | while (cursor < command_len) |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 426 | put_cur_glyph_and_inc_cursor(); |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 427 | } |
| 428 | |
| 429 | /* Go to the next line */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 430 | static void goto_new_line(void) |
| 431 | { |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 432 | put_till_end_and_adv_cursor(); |
Denys Vlasenko | f5018da | 2018-04-06 17:58:21 +0200 | [diff] [blame] | 433 | /* "cursor == 0" is only if prompt is "" and user input is empty */ |
| 434 | if (cursor == 0 || cmdedit_x != 0) |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 435 | bb_putchar('\n'); |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 436 | } |
| 437 | |
Rob Landley | 88621d7 | 2006-08-29 19:41:06 +0000 | [diff] [blame] | 438 | static void beep(void) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 439 | { |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 440 | bb_putchar('\007'); |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 441 | } |
| 442 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 443 | /* Full or last/sole prompt line, reset edit cursor, calculate terminal cursor. |
| 444 | * cmdedit_y is always calculated for the last/sole prompt line. |
| 445 | */ |
| 446 | static void put_prompt_custom(bool is_full) |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 447 | { |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 448 | fputs((is_full ? cmdedit_prompt : prompt_last_line), stdout); |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 449 | cursor = 0; |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 450 | cmdedit_y = cmdedit_prmt_len / cmdedit_termw; /* new quasireal y */ |
| 451 | cmdedit_x = cmdedit_prmt_len % cmdedit_termw; |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 452 | } |
| 453 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 454 | #define put_prompt_last_line() put_prompt_custom(0) |
| 455 | #define put_prompt() put_prompt_custom(1) |
| 456 | |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 457 | /* Move back one character */ |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 458 | /* (optimized for slow terminals) */ |
| 459 | static void input_backward(unsigned num) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 460 | { |
| 461 | if (num > cursor) |
| 462 | num = cursor; |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 463 | if (num == 0) |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 464 | return; |
| 465 | cursor -= num; |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 466 | |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 467 | if ((ENABLE_UNICODE_COMBINING_WCHARS || ENABLE_UNICODE_WIDE_WCHARS) |
| 468 | && unicode_status == UNICODE_ON |
| 469 | ) { |
| 470 | /* correct NUM to be equal to _screen_ width */ |
| 471 | int n = num; |
| 472 | num = 0; |
| 473 | while (--n >= 0) |
| 474 | adjust_width_and_validate_wc(&num, command_ps[cursor + n]); |
| 475 | if (num == 0) |
| 476 | return; |
| 477 | } |
| 478 | |
Denis Vlasenko | b267ed9 | 2008-05-25 21:52:03 +0000 | [diff] [blame] | 479 | if (cmdedit_x >= num) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 480 | cmdedit_x -= num; |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 481 | if (num <= 4) { |
Denis Vlasenko | 6f04391 | 2008-02-18 22:28:03 +0000 | [diff] [blame] | 482 | /* This is longer by 5 bytes on x86. |
Denis Vlasenko | b267ed9 | 2008-05-25 21:52:03 +0000 | [diff] [blame] | 483 | * Also gets miscompiled for ARM users |
| 484 | * (busybox.net/bugs/view.php?id=2274). |
Denis Vlasenko | 6f04391 | 2008-02-18 22:28:03 +0000 | [diff] [blame] | 485 | * printf(("\b\b\b\b" + 4) - num); |
| 486 | * return; |
| 487 | */ |
| 488 | do { |
| 489 | bb_putchar('\b'); |
| 490 | } while (--num); |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 491 | return; |
| 492 | } |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 493 | printf(ESC"[%uD", num); |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 494 | return; |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 495 | } |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 496 | |
| 497 | /* Need to go one or more lines up */ |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 498 | if (ENABLE_UNICODE_WIDE_WCHARS) { |
| 499 | /* With wide chars, it is hard to "backtrack" |
| 500 | * and reliably figure out where to put cursor. |
| 501 | * Example (<> is a wide char; # is an ordinary char, _ cursor): |
| 502 | * |prompt: <><> | |
| 503 | * |<><><><><><> | |
| 504 | * |_ | |
| 505 | * and user presses left arrow. num = 1, cmdedit_x = 0, |
| 506 | * We need to go up one line, and then - how do we know that |
| 507 | * we need to go *10* positions to the right? Because |
| 508 | * |prompt: <>#<>| |
| 509 | * |<><><>#<><><>| |
| 510 | * |_ | |
| 511 | * in this situation we need to go *11* positions to the right. |
| 512 | * |
| 513 | * A simpler thing to do is to redraw everything from the start |
| 514 | * up to new cursor position (which is already known): |
| 515 | */ |
| 516 | unsigned sv_cursor; |
Denys Vlasenko | 9963fe3 | 2010-05-17 04:05:53 +0200 | [diff] [blame] | 517 | /* go to 1st column; go up to first line */ |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 518 | printf("\r" ESC"[%uA", cmdedit_y); |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 519 | cmdedit_y = 0; |
| 520 | sv_cursor = cursor; |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 521 | put_prompt_last_line(); /* sets cursor to 0 */ |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 522 | while (cursor < sv_cursor) |
| 523 | put_cur_glyph_and_inc_cursor(); |
| 524 | } else { |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 525 | int lines_up; |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 526 | /* num = chars to go back from the beginning of current line: */ |
Denys Vlasenko | 248c324 | 2010-05-17 00:45:44 +0200 | [diff] [blame] | 527 | num -= cmdedit_x; |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 528 | /* num=1...w: one line up, w+1...2w: two, etc: */ |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 529 | lines_up = 1 + (num - 1) / cmdedit_termw; |
| 530 | cmdedit_x = (cmdedit_termw * cmdedit_y - num) % cmdedit_termw; |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 531 | cmdedit_y -= lines_up; |
| 532 | /* go to 1st column; go up */ |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 533 | printf("\r" ESC"[%uA", lines_up); |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 534 | /* go to correct column. |
Denys Vlasenko | bbf1aa1 | 2010-05-17 12:33:13 +0200 | [diff] [blame] | 535 | * xterm, konsole, Linux VT interpret 0 as 1 below! wow. |
| 536 | * need to *make sure* we skip it if cmdedit_x == 0 */ |
Denys Vlasenko | 1118d9b | 2010-05-17 12:30:44 +0200 | [diff] [blame] | 537 | if (cmdedit_x) |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 538 | printf(ESC"[%uC", cmdedit_x); |
Denis Vlasenko | b267ed9 | 2008-05-25 21:52:03 +0000 | [diff] [blame] | 539 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 540 | } |
| 541 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 542 | /* See redraw and draw_full below */ |
| 543 | static void draw_custom(int y, int back_cursor, bool is_full) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 544 | { |
Denys Vlasenko | 9963fe3 | 2010-05-17 04:05:53 +0200 | [diff] [blame] | 545 | if (y > 0) /* up y lines */ |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 546 | printf(ESC"[%uA", y); |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 547 | bb_putchar('\r'); |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 548 | put_prompt_custom(is_full); |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 549 | put_till_end_and_adv_cursor(); |
| 550 | printf(SEQ_CLEAR_TILL_END_OF_SCREEN); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 551 | input_backward(back_cursor); |
| 552 | } |
| 553 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 554 | /* Move y lines up, draw last/sole prompt line, editor line[s], and clear tail. |
| 555 | * goal: redraw the prompt+input+cursor in-place, overwriting the previous */ |
| 556 | #define redraw(y, back_cursor) draw_custom((y), (back_cursor), 0) |
| 557 | |
| 558 | /* Like above, but without moving up, and while using all the prompt lines. |
| 559 | * goal: draw a full prompt+input+cursor unrelated to a previous position. |
| 560 | * note: cmdedit_y always ends up relating to the last/sole prompt line */ |
| 561 | #define draw_full(back_cursor) draw_custom(0, (back_cursor), 1) |
| 562 | |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 563 | /* Delete the char in front of the cursor, optionally saving it |
| 564 | * for later putback */ |
Denis Vlasenko | 85c2471 | 2008-03-17 09:04:04 +0000 | [diff] [blame] | 565 | #if !ENABLE_FEATURE_EDITING_VI |
| 566 | static void input_delete(void) |
| 567 | #define input_delete(save) input_delete() |
| 568 | #else |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 569 | static void input_delete(int save) |
Denis Vlasenko | 85c2471 | 2008-03-17 09:04:04 +0000 | [diff] [blame] | 570 | #endif |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 571 | { |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 572 | int j = cursor; |
Erik Andersen | a268573 | 2000-04-09 18:27:46 +0000 | [diff] [blame] | 573 | |
Denis Vlasenko | 77ad97f | 2008-05-13 02:27:31 +0000 | [diff] [blame] | 574 | if (j == (int)command_len) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 575 | return; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 576 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 577 | #if ENABLE_FEATURE_EDITING_VI |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 578 | if (save) { |
| 579 | if (newdelflag) { |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 580 | delptr = delbuf; |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 581 | newdelflag = 0; |
| 582 | } |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 583 | if ((delptr - delbuf) < DELBUFSIZ) |
| 584 | *delptr++ = command_ps[j]; |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 585 | } |
| 586 | #endif |
| 587 | |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 588 | memmove(command_ps + j, command_ps + j + 1, |
Denys Vlasenko | 9531f7d | 2009-07-16 14:33:16 +0200 | [diff] [blame] | 589 | /* (command_len + 1 [because of NUL]) - (j + 1) |
| 590 | * simplified into (command_len - j) */ |
| 591 | (command_len - j) * sizeof(command_ps[0])); |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 592 | command_len--; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 593 | put_till_end_and_adv_cursor(); |
| 594 | /* Last char is still visible, erase it (and more) */ |
| 595 | printf(SEQ_CLEAR_TILL_END_OF_SCREEN); |
Eric Andersen | c470f44 | 2003-07-28 09:56:35 +0000 | [diff] [blame] | 596 | input_backward(cursor - j); /* back to old pos cursor */ |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 597 | } |
| 598 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 599 | #if ENABLE_FEATURE_EDITING_VI |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 600 | static void put(void) |
| 601 | { |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 602 | int ocursor; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 603 | int j = delptr - delbuf; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 604 | |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 605 | if (j == 0) |
| 606 | return; |
| 607 | ocursor = cursor; |
| 608 | /* open hole and then fill it */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 609 | memmove(command_ps + cursor + j, command_ps + cursor, |
| 610 | (command_len - cursor + 1) * sizeof(command_ps[0])); |
| 611 | memcpy(command_ps + cursor, delbuf, j * sizeof(command_ps[0])); |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 612 | command_len += j; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 613 | put_till_end_and_adv_cursor(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 614 | input_backward(cursor - ocursor - j + 1); /* at end of new text */ |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 615 | } |
| 616 | #endif |
| 617 | |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 618 | /* Delete the char in back of the cursor */ |
| 619 | static void input_backspace(void) |
| 620 | { |
| 621 | if (cursor > 0) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 622 | input_backward(1); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 623 | input_delete(0); |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 624 | } |
| 625 | } |
| 626 | |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 627 | /* Move forward one character */ |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 628 | static void input_forward(void) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 629 | { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 630 | if (cursor < command_len) |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 631 | put_cur_glyph_and_inc_cursor(); |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 632 | } |
| 633 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 634 | #if ENABLE_FEATURE_TAB_COMPLETION |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 635 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 636 | //FIXME: |
| 637 | //needs to be more clever: currently it thinks that "foo\ b<TAB> |
| 638 | //matches the file named "foo bar", which is untrue. |
| 639 | //Also, perhaps "foo b<TAB> needs to complete to "foo bar" <cursor>, |
| 640 | //not "foo bar <cursor>... |
| 641 | |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 642 | static void free_tab_completion_data(void) |
| 643 | { |
| 644 | if (matches) { |
| 645 | while (num_matches) |
| 646 | free(matches[--num_matches]); |
| 647 | free(matches); |
| 648 | matches = NULL; |
| 649 | } |
| 650 | } |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 651 | |
Denis Vlasenko | d56b47f | 2006-12-21 22:24:46 +0000 | [diff] [blame] | 652 | static void add_match(char *matched) |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 653 | { |
Denys Vlasenko | c3797d4 | 2017-11-07 18:09:29 +0100 | [diff] [blame] | 654 | unsigned char *p = (unsigned char*)matched; |
| 655 | while (*p) { |
| 656 | /* ESC attack fix: drop any string with control chars */ |
| 657 | if (*p < ' ' |
| 658 | || (!ENABLE_UNICODE_SUPPORT && *p >= 0x7f) |
| 659 | || (ENABLE_UNICODE_SUPPORT && *p == 0x7f) |
| 660 | ) { |
| 661 | free(matched); |
| 662 | return; |
| 663 | } |
| 664 | p++; |
| 665 | } |
Denis Vlasenko | deeed59 | 2008-07-08 05:14:36 +0000 | [diff] [blame] | 666 | matches = xrealloc_vector(matches, 4, num_matches); |
| 667 | matches[num_matches] = matched; |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 668 | num_matches++; |
| 669 | } |
| 670 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 671 | # if ENABLE_FEATURE_USERNAME_COMPLETION |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 672 | /* Replace "~user/..." with "/homedir/...". |
| 673 | * The parameter is malloced, free it or return it |
| 674 | * unchanged if no user is matched. |
| 675 | */ |
| 676 | static char *username_path_completion(char *ud) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 677 | { |
| 678 | struct passwd *entry; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 679 | char *tilde_name = ud; |
| 680 | char *home = NULL; |
| 681 | |
| 682 | ud++; /* skip ~ */ |
| 683 | if (*ud == '/') { /* "~/..." */ |
| 684 | home = home_pwd_buf; |
| 685 | } else { |
| 686 | /* "~user/..." */ |
| 687 | ud = strchr(ud, '/'); |
| 688 | *ud = '\0'; /* "~user" */ |
| 689 | entry = getpwnam(tilde_name + 1); |
| 690 | *ud = '/'; /* restore "~user/..." */ |
| 691 | if (entry) |
| 692 | home = entry->pw_dir; |
| 693 | } |
| 694 | if (home) { |
| 695 | ud = concat_path_file(home, ud); |
| 696 | free(tilde_name); |
| 697 | tilde_name = ud; |
| 698 | } |
| 699 | return tilde_name; |
| 700 | } |
| 701 | |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 702 | /* ~use<tab> - find all users with this prefix. |
| 703 | * Return the length of the prefix used for matching. |
| 704 | */ |
| 705 | static NOINLINE unsigned complete_username(const char *ud) |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 706 | { |
Denys Vlasenko | 23cfaab | 2015-02-07 21:21:02 +0100 | [diff] [blame] | 707 | struct passwd *pw; |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 708 | unsigned userlen; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 709 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 710 | ud++; /* skip ~ */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 711 | userlen = strlen(ud); |
| 712 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 713 | setpwent(); |
Denys Vlasenko | 23cfaab | 2015-02-07 21:21:02 +0100 | [diff] [blame] | 714 | while ((pw = getpwent()) != NULL) { |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 715 | /* Null usernames should result in all users as possible completions. */ |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 716 | if (/* !ud[0] || */ is_prefixed_with(pw->pw_name, ud)) { |
Denys Vlasenko | 23cfaab | 2015-02-07 21:21:02 +0100 | [diff] [blame] | 717 | add_match(xasprintf("~%s/", pw->pw_name)); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 718 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 719 | } |
Denys Vlasenko | 23cfaab | 2015-02-07 21:21:02 +0100 | [diff] [blame] | 720 | endpwent(); /* don't keep password file open */ |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 721 | |
| 722 | return 1 + userlen; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 723 | } |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 724 | # endif /* FEATURE_USERNAME_COMPLETION */ |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 725 | |
| 726 | enum { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 727 | FIND_EXE_ONLY = 0, |
| 728 | FIND_DIR_ONLY = 1, |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 729 | FIND_FILE_ONLY = 2, |
| 730 | }; |
Erik Andersen | 1dbe340 | 2000-03-19 10:46:06 +0000 | [diff] [blame] | 731 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 732 | static int path_parse(char ***p) |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 733 | { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 734 | int npth; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 735 | const char *pth; |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 736 | char *tmp; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 737 | char **res; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 738 | |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 739 | if (state->flags & WITH_PATH_LOOKUP) |
| 740 | pth = state->path_lookup; |
| 741 | else |
| 742 | pth = getenv("PATH"); |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 743 | |
| 744 | /* PATH="" or PATH=":"? */ |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 745 | if (!pth || !pth[0] || LONE_CHAR(pth, ':')) |
| 746 | return 1; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 747 | |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 748 | tmp = (char*)pth; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 749 | npth = 1; /* path component count */ |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 750 | while (1) { |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 751 | tmp = strchr(tmp, ':'); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 752 | if (!tmp) |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 753 | break; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 754 | tmp++; |
| 755 | if (*tmp == '\0') |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 756 | break; /* :<empty> */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 757 | npth++; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 758 | } |
| 759 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 760 | *p = res = xmalloc(npth * sizeof(res[0])); |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 761 | res[0] = tmp = xstrdup(pth); |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 762 | npth = 1; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 763 | while (1) { |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 764 | tmp = strchr(tmp, ':'); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 765 | if (!tmp) |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 766 | break; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 767 | *tmp++ = '\0'; /* ':' -> '\0' */ |
| 768 | if (*tmp == '\0') |
| 769 | break; /* :<empty> */ |
| 770 | res[npth++] = tmp; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 771 | } |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 772 | return npth; |
| 773 | } |
| 774 | |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 775 | /* Complete command, directory or file name. |
| 776 | * Return the length of the prefix used for matching. |
| 777 | */ |
| 778 | static NOINLINE unsigned complete_cmd_dir_file(const char *command, int type) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 779 | { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 780 | char *path1[1]; |
| 781 | char **paths = path1; |
| 782 | int npaths; |
| 783 | int i; |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 784 | unsigned pf_len; |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 785 | const char *pfind; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 786 | char *dirbuf = NULL; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 787 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 788 | npaths = 1; |
Denis Vlasenko | ab2aea4 | 2007-01-29 22:51:58 +0000 | [diff] [blame] | 789 | path1[0] = (char*)"."; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 790 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 791 | pfind = strrchr(command, '/'); |
| 792 | if (!pfind) { |
| 793 | if (type == FIND_EXE_ONLY) |
| 794 | npaths = path_parse(&paths); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 795 | pfind = command; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 796 | } else { |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 797 | /* point to 'l' in "..../last_component" */ |
| 798 | pfind++; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 799 | /* dirbuf = ".../.../.../" */ |
| 800 | dirbuf = xstrndup(command, pfind - command); |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 801 | # if ENABLE_FEATURE_USERNAME_COMPLETION |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 802 | if (dirbuf[0] == '~') /* ~/... or ~user/... */ |
| 803 | dirbuf = username_path_completion(dirbuf); |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 804 | # endif |
Denys Vlasenko | 7063e86 | 2010-09-02 12:44:39 +0200 | [diff] [blame] | 805 | path1[0] = dirbuf; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 806 | } |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 807 | pf_len = strlen(pfind); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 808 | |
Ron Yorston | 3778898 | 2018-11-17 17:48:14 +0000 | [diff] [blame] | 809 | # if ENABLE_FEATURE_SH_STANDALONE && NUM_APPLETS != 1 |
Denys Vlasenko | 1336052 | 2016-10-24 01:25:05 +0200 | [diff] [blame] | 810 | if (type == FIND_EXE_ONLY && !dirbuf) { |
Ron Yorston | 3778898 | 2018-11-17 17:48:14 +0000 | [diff] [blame] | 811 | const char *p = applet_names; |
| 812 | |
Ron Yorston | 2b91958 | 2016-04-08 11:57:20 +0100 | [diff] [blame] | 813 | while (*p) { |
Ron Yorston | f23264b | 2015-05-29 11:31:40 +0100 | [diff] [blame] | 814 | if (strncmp(pfind, p, pf_len) == 0) |
| 815 | add_match(xstrdup(p)); |
Ron Yorston | 3778898 | 2018-11-17 17:48:14 +0000 | [diff] [blame] | 816 | while (*p++ != '\0') |
Ron Yorston | 2b91958 | 2016-04-08 11:57:20 +0100 | [diff] [blame] | 817 | continue; |
Ron Yorston | f23264b | 2015-05-29 11:31:40 +0100 | [diff] [blame] | 818 | } |
| 819 | } |
Denys Vlasenko | f128bdb | 2017-07-29 00:59:24 +0200 | [diff] [blame] | 820 | # endif |
Ron Yorston | f23264b | 2015-05-29 11:31:40 +0100 | [diff] [blame] | 821 | |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 822 | for (i = 0; i < npaths; i++) { |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 823 | DIR *dir; |
| 824 | struct dirent *next; |
| 825 | struct stat st; |
| 826 | char *found; |
| 827 | |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 828 | dir = opendir(paths[i]); |
Denis Vlasenko | b520271 | 2008-04-24 04:42:52 +0000 | [diff] [blame] | 829 | if (!dir) |
| 830 | continue; /* don't print an error */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 831 | |
| 832 | while ((next = readdir(dir)) != NULL) { |
Denys Vlasenko | 3926363 | 2010-09-03 14:11:08 +0200 | [diff] [blame] | 833 | unsigned len; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 834 | const char *name_found = next->d_name; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 835 | |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 836 | /* .../<tab>: bash 3.2.0 shows dotfiles, but not . and .. */ |
| 837 | if (!pfind[0] && DOT_OR_DOTDOT(name_found)) |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 838 | continue; |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 839 | /* match? */ |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 840 | if (!is_prefixed_with(name_found, pfind)) |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 841 | continue; /* no */ |
| 842 | |
| 843 | found = concat_path_file(paths[i], name_found); |
Denis Vlasenko | b520271 | 2008-04-24 04:42:52 +0000 | [diff] [blame] | 844 | /* NB: stat() first so that we see is it a directory; |
| 845 | * but if that fails, use lstat() so that |
| 846 | * we still match dangling links */ |
| 847 | if (stat(found, &st) && lstat(found, &st)) |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 848 | goto cont; /* hmm, remove in progress? */ |
Denis Vlasenko | d56b47f | 2006-12-21 22:24:46 +0000 | [diff] [blame] | 849 | |
Denys Vlasenko | 3926363 | 2010-09-03 14:11:08 +0200 | [diff] [blame] | 850 | /* Save only name */ |
| 851 | len = strlen(name_found); |
| 852 | found = xrealloc(found, len + 2); /* +2: for slash and NUL */ |
| 853 | strcpy(found, name_found); |
Denis Vlasenko | d56b47f | 2006-12-21 22:24:46 +0000 | [diff] [blame] | 854 | |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 855 | if (S_ISDIR(st.st_mode)) { |
Denys Vlasenko | 3926363 | 2010-09-03 14:11:08 +0200 | [diff] [blame] | 856 | /* name is a directory, add slash */ |
| 857 | found[len] = '/'; |
| 858 | found[len + 1] = '\0'; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 859 | } else { |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 860 | /* skip files if looking for dirs only (example: cd) */ |
Eric Andersen | c470f44 | 2003-07-28 09:56:35 +0000 | [diff] [blame] | 861 | if (type == FIND_DIR_ONLY) |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 862 | goto cont; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 863 | } |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 864 | /* add it to the list */ |
Denis Vlasenko | d56b47f | 2006-12-21 22:24:46 +0000 | [diff] [blame] | 865 | add_match(found); |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 866 | continue; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 867 | cont: |
Eric Andersen | e5dfced | 2001-04-09 22:48:12 +0000 | [diff] [blame] | 868 | free(found); |
Erik Andersen | 1dbe340 | 2000-03-19 10:46:06 +0000 | [diff] [blame] | 869 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 870 | closedir(dir); |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 871 | } /* for every path */ |
| 872 | |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 873 | if (paths != path1) { |
Denis Vlasenko | b520271 | 2008-04-24 04:42:52 +0000 | [diff] [blame] | 874 | free(paths[0]); /* allocated memory is only in first member */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 875 | free(paths); |
| 876 | } |
Denys Vlasenko | 3926363 | 2010-09-03 14:11:08 +0200 | [diff] [blame] | 877 | free(dirbuf); |
Denys Vlasenko | 3c460b0 | 2010-09-03 12:56:36 +0200 | [diff] [blame] | 878 | |
| 879 | return pf_len; |
Erik Andersen | 6273f65 | 2000-03-17 01:12:41 +0000 | [diff] [blame] | 880 | } |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 881 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 882 | /* build_match_prefix: |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 883 | * On entry, match_buf contains everything up to cursor at the moment <tab> |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 884 | * was pressed. This function looks at it, figures out what part of it |
| 885 | * constitutes the command/file/directory prefix to use for completion, |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 886 | * and rewrites match_buf to contain only that part. |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 887 | */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 888 | #define dbg_bmp 0 |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 889 | /* Helpers: */ |
| 890 | /* QUOT is used on elements of int_buf[], which are bytes, |
| 891 | * not Unicode chars. Therefore it works correctly even in Unicode mode. |
| 892 | */ |
| 893 | #define QUOT (UCHAR_MAX+1) |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 894 | static void remove_chunk(int16_t *int_buf, int beg, int end) |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 895 | { |
| 896 | /* beg must be <= end */ |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 897 | if (beg == end) |
| 898 | return; |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 899 | |
| 900 | while ((int_buf[beg] = int_buf[end]) != 0) |
| 901 | beg++, end++; |
| 902 | |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 903 | if (dbg_bmp) { |
| 904 | int i; |
| 905 | for (i = 0; int_buf[i]; i++) |
| 906 | bb_putchar((unsigned char)int_buf[i]); |
| 907 | bb_putchar('\n'); |
| 908 | } |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 909 | } |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 910 | /* Caller ensures that match_buf points to a malloced buffer |
| 911 | * big enough to hold strlen(match_buf)*2 + 2 |
| 912 | */ |
| 913 | static NOINLINE int build_match_prefix(char *match_buf) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 914 | { |
| 915 | int i, j; |
| 916 | int command_mode; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 917 | int16_t *int_buf = (int16_t*)match_buf; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 918 | |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 919 | if (dbg_bmp) printf("\n%s\n", match_buf); |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 920 | |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 921 | /* Copy in reverse order, since they overlap */ |
| 922 | i = strlen(match_buf); |
| 923 | do { |
| 924 | int_buf[i] = (unsigned char)match_buf[i]; |
| 925 | i--; |
| 926 | } while (i >= 0); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 927 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 928 | /* Mark every \c as "quoted c" */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 929 | for (i = 0; int_buf[i]; i++) { |
| 930 | if (int_buf[i] == '\\') { |
| 931 | remove_chunk(int_buf, i, i + 1); |
| 932 | int_buf[i] |= QUOT; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 933 | } |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 934 | } |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 935 | /* Quote-mark "chars" and 'chars', drop delimiters */ |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 936 | { |
| 937 | int in_quote = 0; |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 938 | i = 0; |
| 939 | while (int_buf[i]) { |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 940 | int cur = int_buf[i]; |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 941 | if (!cur) |
| 942 | break; |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 943 | if (cur == '\'' || cur == '"') { |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 944 | if (!in_quote || (cur == in_quote)) { |
| 945 | in_quote ^= cur; |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 946 | remove_chunk(int_buf, i, i + 1); |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 947 | continue; |
| 948 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 949 | } |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 950 | if (in_quote) |
| 951 | int_buf[i] = cur | QUOT; |
| 952 | i++; |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 953 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 954 | } |
| 955 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 956 | /* Remove everything up to command delimiters: |
| 957 | * ';' ';;' '&' '|' '&&' '||', |
| 958 | * but careful with '>&' '<&' '>|' |
| 959 | */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 960 | for (i = 0; int_buf[i]; i++) { |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 961 | int cur = int_buf[i]; |
| 962 | if (cur == ';' || cur == '&' || cur == '|') { |
| 963 | int prev = i ? int_buf[i - 1] : 0; |
| 964 | if (cur == '&' && (prev == '>' || prev == '<')) { |
| 965 | continue; |
| 966 | } else if (cur == '|' && prev == '>') { |
| 967 | continue; |
| 968 | } |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 969 | remove_chunk(int_buf, 0, i + 1 + (cur == int_buf[i + 1])); |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 970 | i = -1; /* back to square 1 */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 971 | } |
| 972 | } |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 973 | /* Remove all `cmd` */ |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 974 | for (i = 0; int_buf[i]; i++) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 975 | if (int_buf[i] == '`') { |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 976 | for (j = i + 1; int_buf[j]; j++) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 977 | if (int_buf[j] == '`') { |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 978 | /* `cmd` should count as a word: |
| 979 | * `cmd` c<tab> should search for files c*, |
| 980 | * not commands c*. Therefore we don't drop |
| 981 | * `cmd` entirely, we replace it with single `. |
| 982 | */ |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 983 | remove_chunk(int_buf, i, j); |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 984 | goto next; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 985 | } |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 986 | } |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 987 | /* No closing ` - command mode, remove all up to ` */ |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 988 | remove_chunk(int_buf, 0, i + 1); |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 989 | break; |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 990 | next: ; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 991 | } |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 992 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 993 | |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 994 | /* Remove "cmd (" and "cmd {" |
| 995 | * Example: "if { c<tab>" |
| 996 | * In this example, c should be matched as command pfx. |
| 997 | */ |
| 998 | for (i = 0; int_buf[i]; i++) { |
| 999 | if (int_buf[i] == '(' || int_buf[i] == '{') { |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 1000 | remove_chunk(int_buf, 0, i + 1); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1001 | i = -1; /* back to square 1 */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1002 | } |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1003 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1004 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1005 | /* Remove leading unquoted spaces */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1006 | for (i = 0; int_buf[i]; i++) |
| 1007 | if (int_buf[i] != ' ') |
| 1008 | break; |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 1009 | remove_chunk(int_buf, 0, i); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1010 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1011 | /* Determine completion mode */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1012 | command_mode = FIND_EXE_ONLY; |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1013 | for (i = 0; int_buf[i]; i++) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1014 | if (int_buf[i] == ' ' || int_buf[i] == '<' || int_buf[i] == '>') { |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1015 | if (int_buf[i] == ' ' |
| 1016 | && command_mode == FIND_EXE_ONLY |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 1017 | && (char)int_buf[0] == 'c' |
| 1018 | && (char)int_buf[1] == 'd' |
| 1019 | && i == 2 /* -> int_buf[2] == ' ' */ |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1020 | ) { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1021 | command_mode = FIND_DIR_ONLY; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1022 | } else { |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1023 | command_mode = FIND_FILE_ONLY; |
| 1024 | break; |
| 1025 | } |
| 1026 | } |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1027 | } |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 1028 | if (dbg_bmp) printf("command_mode(0:exe/1:dir/2:file):%d\n", command_mode); |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1029 | |
| 1030 | /* Remove everything except last word */ |
Denys Vlasenko | b068bd7 | 2010-09-02 12:01:11 +0200 | [diff] [blame] | 1031 | for (i = 0; int_buf[i]; i++) /* quasi-strlen(int_buf) */ |
| 1032 | continue; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1033 | for (--i; i >= 0; i--) { |
Denys Vlasenko | 2679e3c | 2010-09-03 12:53:15 +0200 | [diff] [blame] | 1034 | int cur = int_buf[i]; |
| 1035 | if (cur == ' ' || cur == '<' || cur == '>' || cur == '|' || cur == '&') { |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 1036 | remove_chunk(int_buf, 0, i + 1); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1037 | break; |
| 1038 | } |
| 1039 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1040 | |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1041 | /* Convert back to string of _chars_ */ |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 1042 | i = 0; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1043 | while ((match_buf[i] = int_buf[i]) != '\0') |
Denys Vlasenko | 81254ed | 2010-09-03 12:59:15 +0200 | [diff] [blame] | 1044 | i++; |
Denys Vlasenko | 9b56bf5 | 2010-09-03 13:02:47 +0200 | [diff] [blame] | 1045 | |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1046 | if (dbg_bmp) printf("final match_buf:'%s'\n", match_buf); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1047 | |
| 1048 | return command_mode; |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 1049 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1050 | |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1051 | /* |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1052 | * Display by column (original idea from ls applet, |
| 1053 | * very optimized by me [Vladimir] :) |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 1054 | */ |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 1055 | static void showfiles(void) |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1056 | { |
| 1057 | int ncols, row; |
| 1058 | int column_width = 0; |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 1059 | int nfiles = num_matches; |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1060 | int nrows = nfiles; |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 1061 | int l; |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1062 | |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1063 | /* find the longest file name - use that as the column width */ |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1064 | for (row = 0; row < nrows; row++) { |
Tomas Heinrich | 11bcf4b | 2010-06-01 08:33:18 +0200 | [diff] [blame] | 1065 | l = unicode_strwidth(matches[row]); |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1066 | if (column_width < l) |
| 1067 | column_width = l; |
| 1068 | } |
| 1069 | column_width += 2; /* min space for columns */ |
| 1070 | ncols = cmdedit_termw / column_width; |
| 1071 | |
| 1072 | if (ncols > 1) { |
| 1073 | nrows /= ncols; |
Denis Vlasenko | 7f1dc21 | 2006-12-19 01:10:25 +0000 | [diff] [blame] | 1074 | if (nfiles % ncols) |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1075 | nrows++; /* round up fractionals */ |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1076 | } else { |
| 1077 | ncols = 1; |
| 1078 | } |
| 1079 | for (row = 0; row < nrows; row++) { |
| 1080 | int n = row; |
| 1081 | int nc; |
| 1082 | |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1083 | for (nc = 1; nc < ncols && n+nrows < nfiles; n += nrows, nc++) { |
Denis Vlasenko | d56b47f | 2006-12-21 22:24:46 +0000 | [diff] [blame] | 1084 | printf("%s%-*s", matches[n], |
Tomas Heinrich | 11bcf4b | 2010-06-01 08:33:18 +0200 | [diff] [blame] | 1085 | (int)(column_width - unicode_strwidth(matches[n])), "" |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1086 | ); |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 1087 | } |
Tomas Heinrich | 11bcf4b | 2010-06-01 08:33:18 +0200 | [diff] [blame] | 1088 | if (ENABLE_UNICODE_SUPPORT) |
Denys Vlasenko | 349d72c | 2018-09-30 16:56:56 +0200 | [diff] [blame] | 1089 | puts(printable_string(matches[n])); |
Tomas Heinrich | 11bcf4b | 2010-06-01 08:33:18 +0200 | [diff] [blame] | 1090 | else |
| 1091 | puts(matches[n]); |
Glenn L McGrath | 4d00129 | 2003-01-06 01:11:50 +0000 | [diff] [blame] | 1092 | } |
| 1093 | } |
| 1094 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1095 | static const char *is_special_char(char c) |
| 1096 | { |
| 1097 | return strchr(" `\"#$%^&*()=+{}[]:;'|\\<>", c); |
| 1098 | } |
| 1099 | |
| 1100 | static char *quote_special_chars(char *found) |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1101 | { |
| 1102 | int l = 0; |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1103 | char *s = xzalloc((strlen(found) + 1) * 2); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1104 | |
| 1105 | while (*found) { |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1106 | if (is_special_char(*found)) |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1107 | s[l++] = '\\'; |
| 1108 | s[l++] = *found++; |
| 1109 | } |
Denys Vlasenko | 53fd1bf | 2009-07-16 02:19:39 +0200 | [diff] [blame] | 1110 | /* s[l] = '\0'; - already is */ |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1111 | return s; |
| 1112 | } |
| 1113 | |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 1114 | /* Do TAB completion */ |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1115 | static NOINLINE void input_tab(smallint *lastWasTab) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1116 | { |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1117 | char *chosen_match; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1118 | char *match_buf; |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1119 | size_t len_found; |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1120 | /* Length of string used for matching */ |
| 1121 | unsigned match_pfx_len = match_pfx_len; |
| 1122 | int find_type; |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1123 | # if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1124 | /* cursor pos in command converted to multibyte form */ |
| 1125 | int cursor_mb; |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1126 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1127 | if (!(state->flags & TAB_COMPLETION)) |
| 1128 | return; |
| 1129 | |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1130 | if (*lastWasTab) { |
| 1131 | /* The last char was a TAB too. |
| 1132 | * Print a list of all the available choices. |
| 1133 | */ |
Denys Vlasenko | a46e16e | 2010-09-03 13:05:51 +0200 | [diff] [blame] | 1134 | if (num_matches > 0) { |
| 1135 | /* cursor will be changed by goto_new_line() */ |
Denys Vlasenko | 044b180 | 2009-07-12 02:50:35 +0200 | [diff] [blame] | 1136 | int sav_cursor = cursor; |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 1137 | goto_new_line(); |
"Vladimir N. Oleynik" | fdb871c | 2006-01-25 11:53:47 +0000 | [diff] [blame] | 1138 | showfiles(); |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 1139 | draw_full(command_len - sav_cursor); |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1140 | } |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1141 | return; |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1142 | } |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1143 | |
| 1144 | *lastWasTab = 1; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1145 | chosen_match = NULL; |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1146 | |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1147 | /* Make a local copy of the string up to the position of the cursor. |
| 1148 | * build_match_prefix will expand it into int16_t's, need to allocate |
| 1149 | * twice as much as the string_len+1. |
| 1150 | * (we then also (ab)use this extra space later - see (**)) |
| 1151 | */ |
| 1152 | match_buf = xmalloc(MAX_LINELEN * sizeof(int16_t)); |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1153 | # if !ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1154 | save_string(match_buf, cursor + 1); /* +1 for NUL */ |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1155 | # else |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1156 | { |
| 1157 | CHAR_T wc = command_ps[cursor]; |
| 1158 | command_ps[cursor] = BB_NUL; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1159 | save_string(match_buf, MAX_LINELEN); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1160 | command_ps[cursor] = wc; |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1161 | cursor_mb = strlen(match_buf); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1162 | } |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1163 | # endif |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1164 | find_type = build_match_prefix(match_buf); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1165 | |
| 1166 | /* Free up any memory already allocated */ |
| 1167 | free_tab_completion_data(); |
| 1168 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1169 | # if ENABLE_FEATURE_USERNAME_COMPLETION |
| 1170 | /* If the word starts with ~ and there is no slash in the word, |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1171 | * then try completing this word as a username. */ |
| 1172 | if (state->flags & USERNAME_COMPLETION) |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1173 | if (match_buf[0] == '~' && strchr(match_buf, '/') == NULL) |
| 1174 | match_pfx_len = complete_username(match_buf); |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1175 | # endif |
| 1176 | /* If complete_username() did not match, |
| 1177 | * try to match a command in $PATH, or a directory, or a file */ |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1178 | if (!matches) |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1179 | match_pfx_len = complete_cmd_dir_file(match_buf, find_type); |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1180 | |
| 1181 | /* Account for backslashes which will be inserted |
| 1182 | * by quote_special_chars() later */ |
| 1183 | { |
| 1184 | const char *e = match_buf + strlen(match_buf); |
| 1185 | const char *s = e - match_pfx_len; |
| 1186 | while (s < e) |
| 1187 | if (is_special_char(*s++)) |
| 1188 | match_pfx_len++; |
| 1189 | } |
| 1190 | |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1191 | /* Remove duplicates */ |
| 1192 | if (matches) { |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1193 | unsigned i, n = 0; |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1194 | qsort_string_vector(matches, num_matches); |
| 1195 | for (i = 0; i < num_matches - 1; ++i) { |
| 1196 | //if (matches[i] && matches[i+1]) { /* paranoia */ |
| 1197 | if (strcmp(matches[i], matches[i+1]) == 0) { |
| 1198 | free(matches[i]); |
| 1199 | //matches[i] = NULL; /* paranoia */ |
| 1200 | } else { |
| 1201 | matches[n++] = matches[i]; |
| 1202 | } |
| 1203 | //} |
| 1204 | } |
| 1205 | matches[n++] = matches[i]; |
| 1206 | num_matches = n; |
| 1207 | } |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1208 | |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1209 | /* Did we find exactly one match? */ |
| 1210 | if (num_matches != 1) { /* no */ |
| 1211 | char *cp; |
| 1212 | beep(); |
| 1213 | if (!matches) |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1214 | goto ret; /* no matches at all */ |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1215 | /* Find common prefix */ |
| 1216 | chosen_match = xstrdup(matches[0]); |
| 1217 | for (cp = chosen_match; *cp; cp++) { |
| 1218 | unsigned n; |
| 1219 | for (n = 1; n < num_matches; n++) { |
| 1220 | if (matches[n][cp - chosen_match] != *cp) { |
| 1221 | goto stop; |
| 1222 | } |
| 1223 | } |
| 1224 | } |
| 1225 | stop: |
| 1226 | if (cp == chosen_match) { /* have unique prefix? */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1227 | goto ret; /* no */ |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1228 | } |
| 1229 | *cp = '\0'; |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1230 | cp = quote_special_chars(chosen_match); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1231 | free(chosen_match); |
| 1232 | chosen_match = cp; |
| 1233 | len_found = strlen(chosen_match); |
| 1234 | } else { /* exactly one match */ |
| 1235 | /* Next <tab> is not a double-tab */ |
| 1236 | *lastWasTab = 0; |
| 1237 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1238 | chosen_match = quote_special_chars(matches[0]); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1239 | len_found = strlen(chosen_match); |
| 1240 | if (chosen_match[len_found-1] != '/') { |
| 1241 | chosen_match[len_found] = ' '; |
| 1242 | chosen_match[++len_found] = '\0'; |
| 1243 | } |
| 1244 | } |
| 1245 | |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1246 | # if !ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1247 | /* Have space to place the match? */ |
| 1248 | /* The result consists of three parts with these lengths: */ |
| 1249 | /* cursor + (len_found - match_pfx_len) + (command_len - cursor) */ |
| 1250 | /* it simplifies into: */ |
| 1251 | if ((int)(len_found - match_pfx_len + command_len) < S.maxsize) { |
| 1252 | int pos; |
| 1253 | /* save tail */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1254 | strcpy(match_buf, &command_ps[cursor]); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1255 | /* add match and tail */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1256 | sprintf(&command_ps[cursor], "%s%s", chosen_match + match_pfx_len, match_buf); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1257 | command_len = strlen(command_ps); |
| 1258 | /* new pos */ |
| 1259 | pos = cursor + len_found - match_pfx_len; |
| 1260 | /* write out the matched command */ |
| 1261 | redraw(cmdedit_y, command_len - pos); |
| 1262 | } |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1263 | # else |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1264 | { |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1265 | /* Use 2nd half of match_buf as scratch space - see (**) */ |
| 1266 | char *command = match_buf + MAX_LINELEN; |
| 1267 | int len = save_string(command, MAX_LINELEN); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1268 | /* Have space to place the match? */ |
| 1269 | /* cursor_mb + (len_found - match_pfx_len) + (len - cursor_mb) */ |
| 1270 | if ((int)(len_found - match_pfx_len + len) < MAX_LINELEN) { |
| 1271 | int pos; |
| 1272 | /* save tail */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1273 | strcpy(match_buf, &command[cursor_mb]); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1274 | /* where do we want to have cursor after all? */ |
| 1275 | strcpy(&command[cursor_mb], chosen_match + match_pfx_len); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 1276 | len = load_string(command); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1277 | /* add match and tail */ |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1278 | sprintf(&command[cursor_mb], "%s%s", chosen_match + match_pfx_len, match_buf); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 1279 | command_len = load_string(command); |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1280 | /* write out the matched command */ |
| 1281 | /* paranoia: load_string can return 0 on conv error, |
| 1282 | * prevent passing pos = (0 - 12) to redraw */ |
| 1283 | pos = command_len - len; |
| 1284 | redraw(cmdedit_y, pos >= 0 ? pos : 0); |
| 1285 | } |
| 1286 | } |
Mike Shal | f376303 | 2010-11-22 03:49:18 +0100 | [diff] [blame] | 1287 | # endif |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1288 | ret: |
Denys Vlasenko | ba0e103 | 2010-09-03 14:08:24 +0200 | [diff] [blame] | 1289 | free(chosen_match); |
Denys Vlasenko | 76939e7 | 2010-09-03 14:09:24 +0200 | [diff] [blame] | 1290 | free(match_buf); |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1291 | } |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 1292 | |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 1293 | #endif /* FEATURE_TAB_COMPLETION */ |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1294 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1295 | |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1296 | line_input_t* FAST_FUNC new_line_input_t(int flags) |
| 1297 | { |
| 1298 | line_input_t *n = xzalloc(sizeof(*n)); |
| 1299 | n->flags = flags; |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 1300 | n->timeout = -1; |
Denys Vlasenko | 79df481 | 2014-01-10 14:38:26 +0100 | [diff] [blame] | 1301 | #if MAX_HISTORY > 0 |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1302 | n->max_history = MAX_HISTORY; |
Denys Vlasenko | 79df481 | 2014-01-10 14:38:26 +0100 | [diff] [blame] | 1303 | #endif |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1304 | return n; |
| 1305 | } |
| 1306 | |
| 1307 | |
Denis Vlasenko | 9d4533e | 2006-11-02 22:09:37 +0000 | [diff] [blame] | 1308 | #if MAX_HISTORY > 0 |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1309 | |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 1310 | unsigned FAST_FUNC size_from_HISTFILESIZE(const char *hp) |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1311 | { |
| 1312 | int size = MAX_HISTORY; |
| 1313 | if (hp) { |
| 1314 | size = atoi(hp); |
| 1315 | if (size <= 0) |
| 1316 | return 1; |
| 1317 | if (size > MAX_HISTORY) |
| 1318 | return MAX_HISTORY; |
| 1319 | } |
| 1320 | return size; |
| 1321 | } |
| 1322 | |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1323 | static void save_command_ps_at_cur_history(void) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1324 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1325 | if (command_ps[0] != BB_NUL) { |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1326 | int cur = state->cur_history; |
| 1327 | free(state->history[cur]); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1328 | |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 1329 | # if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1330 | { |
| 1331 | char tbuf[MAX_LINELEN]; |
| 1332 | save_string(tbuf, sizeof(tbuf)); |
| 1333 | state->history[cur] = xstrdup(tbuf); |
| 1334 | } |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1335 | # else |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1336 | state->history[cur] = xstrdup(command_ps); |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1337 | # endif |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 1338 | } |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1339 | } |
| 1340 | |
| 1341 | /* state->flags is already checked to be nonzero */ |
| 1342 | static int get_previous_history(void) |
| 1343 | { |
| 1344 | if ((state->flags & DO_HISTORY) && state->cur_history) { |
| 1345 | save_command_ps_at_cur_history(); |
| 1346 | state->cur_history--; |
| 1347 | return 1; |
| 1348 | } |
| 1349 | beep(); |
| 1350 | return 0; |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1351 | } |
| 1352 | |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 1353 | static int get_next_history(void) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1354 | { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1355 | if (state->flags & DO_HISTORY) { |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1356 | if (state->cur_history < state->cnt_history) { |
| 1357 | save_command_ps_at_cur_history(); /* save the current history line */ |
| 1358 | return ++state->cur_history; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1359 | } |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 1360 | } |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1361 | beep(); |
| 1362 | return 0; |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 1363 | } |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1364 | |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 1365 | /* Lists command history. Used by shell 'history' builtins */ |
| 1366 | void FAST_FUNC show_history(const line_input_t *st) |
| 1367 | { |
| 1368 | int i; |
| 1369 | |
| 1370 | if (!st) |
| 1371 | return; |
| 1372 | for (i = 0; i < st->cnt_history; i++) |
| 1373 | printf("%4d %s\n", i, st->history[i]); |
| 1374 | } |
| 1375 | |
Denys Vlasenko | 3d27d43 | 2018-12-27 18:03:20 +0100 | [diff] [blame] | 1376 | void FAST_FUNC free_line_input_t(line_input_t *n) |
| 1377 | { |
| 1378 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
| 1379 | int i = n->cnt_history; |
| 1380 | while (i > 0) |
| 1381 | free(n->history[--i]); |
| 1382 | #endif |
| 1383 | free(n); |
| 1384 | } |
| 1385 | |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1386 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1387 | /* We try to ensure that concurrent additions to the history |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1388 | * do not overwrite each other. |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1389 | * Otherwise shell users get unhappy. |
| 1390 | * |
| 1391 | * History file is trimmed lazily, when it grows several times longer |
| 1392 | * than configured MAX_HISTORY lines. |
| 1393 | */ |
| 1394 | |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1395 | /* state->flags is already checked to be nonzero */ |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1396 | static void load_history(line_input_t *st_parm) |
Glenn L McGrath | fdbbb04 | 2002-12-09 11:10:40 +0000 | [diff] [blame] | 1397 | { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1398 | char *temp_h[MAX_HISTORY]; |
| 1399 | char *line; |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1400 | FILE *fp; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1401 | unsigned idx, i, line_len; |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1402 | |
Denis Vlasenko | 08ec67b | 2008-03-26 13:32:30 +0000 | [diff] [blame] | 1403 | /* NB: do not trash old history if file can't be opened */ |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1404 | |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1405 | fp = fopen_for_read(st_parm->hist_file); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1406 | if (fp) { |
Denis Vlasenko | 08ec67b | 2008-03-26 13:32:30 +0000 | [diff] [blame] | 1407 | /* clean up old history */ |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1408 | for (idx = st_parm->cnt_history; idx > 0;) { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1409 | idx--; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1410 | free(st_parm->history[idx]); |
| 1411 | st_parm->history[idx] = NULL; |
Denis Vlasenko | 08ec67b | 2008-03-26 13:32:30 +0000 | [diff] [blame] | 1412 | } |
| 1413 | |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1414 | /* fill temp_h[], retaining only last MAX_HISTORY lines */ |
| 1415 | memset(temp_h, 0, sizeof(temp_h)); |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1416 | idx = 0; |
Dennis Groenen | deee356 | 2012-04-24 22:40:58 +0200 | [diff] [blame] | 1417 | st_parm->cnt_history_in_file = 0; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1418 | while ((line = xmalloc_fgetline(fp)) != NULL) { |
| 1419 | if (line[0] == '\0') { |
| 1420 | free(line); |
Glenn L McGrath | fdbbb04 | 2002-12-09 11:10:40 +0000 | [diff] [blame] | 1421 | continue; |
| 1422 | } |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1423 | free(temp_h[idx]); |
| 1424 | temp_h[idx] = line; |
Dennis Groenen | deee356 | 2012-04-24 22:40:58 +0200 | [diff] [blame] | 1425 | st_parm->cnt_history_in_file++; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1426 | idx++; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1427 | if (idx == st_parm->max_history) |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1428 | idx = 0; |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1429 | } |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1430 | fclose(fp); |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1431 | |
| 1432 | /* find first non-NULL temp_h[], if any */ |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1433 | if (st_parm->cnt_history_in_file) { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1434 | while (temp_h[idx] == NULL) { |
| 1435 | idx++; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1436 | if (idx == st_parm->max_history) |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1437 | idx = 0; |
| 1438 | } |
| 1439 | } |
| 1440 | |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1441 | /* copy temp_h[] to st_parm->history[] */ |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1442 | for (i = 0; i < st_parm->max_history;) { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1443 | line = temp_h[idx]; |
| 1444 | if (!line) |
| 1445 | break; |
| 1446 | idx++; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1447 | if (idx == st_parm->max_history) |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1448 | idx = 0; |
| 1449 | line_len = strlen(line); |
| 1450 | if (line_len >= MAX_LINELEN) |
| 1451 | line[MAX_LINELEN-1] = '\0'; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1452 | st_parm->history[i++] = line; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1453 | } |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1454 | st_parm->cnt_history = i; |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1455 | if (ENABLE_FEATURE_EDITING_SAVE_ON_EXIT) |
| 1456 | st_parm->cnt_history_in_file = i; |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1457 | } |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1458 | } |
| 1459 | |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1460 | # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| 1461 | void save_history(line_input_t *st) |
| 1462 | { |
| 1463 | FILE *fp; |
| 1464 | |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1465 | if (!st->hist_file) |
| 1466 | return; |
| 1467 | if (st->cnt_history <= st->cnt_history_in_file) |
| 1468 | return; |
| 1469 | |
| 1470 | fp = fopen(st->hist_file, "a"); |
| 1471 | if (fp) { |
| 1472 | int i, fd; |
| 1473 | char *new_name; |
| 1474 | line_input_t *st_temp; |
| 1475 | |
| 1476 | for (i = st->cnt_history_in_file; i < st->cnt_history; i++) |
| 1477 | fprintf(fp, "%s\n", st->history[i]); |
| 1478 | fclose(fp); |
| 1479 | |
| 1480 | /* we may have concurrently written entries from others. |
| 1481 | * load them */ |
| 1482 | st_temp = new_line_input_t(st->flags); |
| 1483 | st_temp->hist_file = st->hist_file; |
| 1484 | st_temp->max_history = st->max_history; |
| 1485 | load_history(st_temp); |
| 1486 | |
| 1487 | /* write out temp file and replace hist_file atomically */ |
| 1488 | new_name = xasprintf("%s.%u.new", st->hist_file, (int) getpid()); |
| 1489 | fd = open(new_name, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
| 1490 | if (fd >= 0) { |
| 1491 | fp = xfdopen_for_write(fd); |
| 1492 | for (i = 0; i < st_temp->cnt_history; i++) |
| 1493 | fprintf(fp, "%s\n", st_temp->history[i]); |
| 1494 | fclose(fp); |
| 1495 | if (rename(new_name, st->hist_file) == 0) |
| 1496 | st->cnt_history_in_file = st_temp->cnt_history; |
| 1497 | } |
| 1498 | free(new_name); |
| 1499 | free_line_input_t(st_temp); |
| 1500 | } |
| 1501 | } |
| 1502 | # else |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1503 | static void save_history(char *str) |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1504 | { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1505 | int fd; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1506 | int len, len2; |
Eric Andersen | c470f44 | 2003-07-28 09:56:35 +0000 | [diff] [blame] | 1507 | |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1508 | if (!state->hist_file) |
| 1509 | return; |
| 1510 | |
Wolfram Sang | 2e9aeae | 2010-11-15 02:58:28 +0100 | [diff] [blame] | 1511 | fd = open(state->hist_file, O_WRONLY | O_CREAT | O_APPEND, 0600); |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1512 | if (fd < 0) |
| 1513 | return; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1514 | xlseek(fd, 0, SEEK_END); /* paranoia */ |
| 1515 | len = strlen(str); |
| 1516 | str[len] = '\n'; /* we (try to) do atomic write */ |
| 1517 | len2 = full_write(fd, str, len + 1); |
| 1518 | str[len] = '\0'; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1519 | close(fd); |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1520 | if (len2 != len + 1) |
| 1521 | return; /* "wtf?" */ |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1522 | |
| 1523 | /* did we write so much that history file needs trimming? */ |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1524 | state->cnt_history_in_file++; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1525 | if (state->cnt_history_in_file > state->max_history * 4) { |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1526 | char *new_name; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1527 | line_input_t *st_temp; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1528 | |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1529 | /* we may have concurrently written entries from others. |
| 1530 | * load them */ |
| 1531 | st_temp = new_line_input_t(state->flags); |
| 1532 | st_temp->hist_file = state->hist_file; |
Denys Vlasenko | e3d8d07 | 2011-03-31 14:39:38 +0200 | [diff] [blame] | 1533 | st_temp->max_history = state->max_history; |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1534 | load_history(st_temp); |
| 1535 | |
| 1536 | /* write out temp file and replace hist_file atomically */ |
| 1537 | new_name = xasprintf("%s.%u.new", state->hist_file, (int) getpid()); |
Denys Vlasenko | 4840ae8 | 2011-09-04 15:28:03 +0200 | [diff] [blame] | 1538 | fd = open(new_name, O_WRONLY | O_CREAT | O_TRUNC, 0600); |
Wolfram Sang | 2e9aeae | 2010-11-15 02:58:28 +0100 | [diff] [blame] | 1539 | if (fd >= 0) { |
| 1540 | FILE *fp; |
| 1541 | int i; |
| 1542 | |
| 1543 | fp = xfdopen_for_write(fd); |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1544 | for (i = 0; i < st_temp->cnt_history; i++) |
| 1545 | fprintf(fp, "%s\n", st_temp->history[i]); |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1546 | fclose(fp); |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1547 | if (rename(new_name, state->hist_file) == 0) |
| 1548 | state->cnt_history_in_file = st_temp->cnt_history; |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1549 | } |
| 1550 | free(new_name); |
Denis Vlasenko | c0ea82a | 2009-03-23 06:33:37 +0000 | [diff] [blame] | 1551 | free_line_input_t(st_temp); |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1552 | } |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1553 | } |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1554 | # endif |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1555 | # else |
| 1556 | # define load_history(a) ((void)0) |
| 1557 | # define save_history(a) ((void)0) |
| 1558 | # endif /* FEATURE_COMMAND_SAVEHISTORY */ |
Robert Griebl | 350d26b | 2002-12-03 22:45:46 +0000 | [diff] [blame] | 1559 | |
Denis Vlasenko | 57abf9e | 2009-03-22 19:00:05 +0000 | [diff] [blame] | 1560 | static void remember_in_history(char *str) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1561 | { |
| 1562 | int i; |
| 1563 | |
| 1564 | if (!(state->flags & DO_HISTORY)) |
| 1565 | return; |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1566 | if (str[0] == '\0') |
| 1567 | return; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1568 | i = state->cnt_history; |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1569 | /* Don't save dupes */ |
| 1570 | if (i && strcmp(state->history[i-1], str) == 0) |
| 1571 | return; |
| 1572 | |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1573 | free(state->history[state->max_history]); /* redundant, paranoia */ |
| 1574 | state->history[state->max_history] = NULL; /* redundant, paranoia */ |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 1575 | |
| 1576 | /* If history[] is full, remove the oldest command */ |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1577 | /* we need to keep history[state->max_history] empty, hence >=, not > */ |
| 1578 | if (i >= state->max_history) { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1579 | free(state->history[0]); |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1580 | for (i = 0; i < state->max_history-1; i++) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1581 | state->history[i] = state->history[i+1]; |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1582 | /* i == state->max_history-1 */ |
Denys Vlasenko | c0cae52 | 2011-11-04 01:09:09 +0100 | [diff] [blame] | 1583 | # if ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| 1584 | if (state->cnt_history_in_file) |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1585 | state->cnt_history_in_file--; |
Denys Vlasenko | c0cae52 | 2011-11-04 01:09:09 +0100 | [diff] [blame] | 1586 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1587 | } |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1588 | /* i <= state->max_history-1 */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1589 | state->history[i++] = xstrdup(str); |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 1590 | /* i <= state->max_history */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1591 | state->cur_history = i; |
| 1592 | state->cnt_history = i; |
Denys Vlasenko | bede215 | 2011-09-04 16:12:33 +0200 | [diff] [blame] | 1593 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY && !ENABLE_FEATURE_EDITING_SAVE_ON_EXIT |
| 1594 | save_history(str); |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1595 | # endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1596 | } |
| 1597 | |
| 1598 | #else /* MAX_HISTORY == 0 */ |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1599 | # define remember_in_history(a) ((void)0) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1600 | #endif /* MAX_HISTORY */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 1601 | |
| 1602 | |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 1603 | #if ENABLE_FEATURE_EDITING_VI |
Erik Andersen | 6273f65 | 2000-03-17 01:12:41 +0000 | [diff] [blame] | 1604 | /* |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1605 | * vi mode implemented 2005 by Paul Fox <pgf@foxharp.boston.ma.us> |
Erik Andersen | 6273f65 | 2000-03-17 01:12:41 +0000 | [diff] [blame] | 1606 | */ |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1607 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1608 | vi_Word_motion(int eat) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1609 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1610 | CHAR_T *command = command_ps; |
| 1611 | |
| 1612 | while (cursor < command_len && !BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1613 | input_forward(); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1614 | if (eat) while (cursor < command_len && BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1615 | input_forward(); |
| 1616 | } |
| 1617 | |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1618 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1619 | vi_word_motion(int eat) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1620 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1621 | CHAR_T *command = command_ps; |
| 1622 | |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1623 | if (BB_isalnum_or_underscore(command[cursor])) { |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 1624 | while (cursor < command_len |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1625 | && (BB_isalnum_or_underscore(command[cursor+1])) |
Denys Vlasenko | 1302892 | 2009-07-12 00:51:15 +0200 | [diff] [blame] | 1626 | ) { |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1627 | input_forward(); |
Denys Vlasenko | 1302892 | 2009-07-12 00:51:15 +0200 | [diff] [blame] | 1628 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1629 | } else if (BB_ispunct(command[cursor])) { |
| 1630 | while (cursor < command_len && BB_ispunct(command[cursor+1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1631 | input_forward(); |
| 1632 | } |
| 1633 | |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 1634 | if (cursor < command_len) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1635 | input_forward(); |
| 1636 | |
Denys Vlasenko | 1302892 | 2009-07-12 00:51:15 +0200 | [diff] [blame] | 1637 | if (eat) { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1638 | while (cursor < command_len && BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1639 | input_forward(); |
Denys Vlasenko | 1302892 | 2009-07-12 00:51:15 +0200 | [diff] [blame] | 1640 | } |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1641 | } |
| 1642 | |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1643 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1644 | vi_End_motion(void) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1645 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1646 | CHAR_T *command = command_ps; |
| 1647 | |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1648 | input_forward(); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1649 | while (cursor < command_len && BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1650 | input_forward(); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1651 | while (cursor < command_len-1 && !BB_isspace(command[cursor+1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1652 | input_forward(); |
| 1653 | } |
| 1654 | |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1655 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1656 | vi_end_motion(void) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1657 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1658 | CHAR_T *command = command_ps; |
| 1659 | |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 1660 | if (cursor >= command_len-1) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1661 | return; |
| 1662 | input_forward(); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1663 | while (cursor < command_len-1 && BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1664 | input_forward(); |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 1665 | if (cursor >= command_len-1) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1666 | return; |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1667 | if (BB_isalnum_or_underscore(command[cursor])) { |
Denis Vlasenko | 253ce00 | 2007-01-22 08:34:44 +0000 | [diff] [blame] | 1668 | while (cursor < command_len-1 |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1669 | && (BB_isalnum_or_underscore(command[cursor+1])) |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1670 | ) { |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1671 | input_forward(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1672 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1673 | } else if (BB_ispunct(command[cursor])) { |
| 1674 | while (cursor < command_len-1 && BB_ispunct(command[cursor+1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1675 | input_forward(); |
| 1676 | } |
| 1677 | } |
| 1678 | |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1679 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1680 | vi_Back_motion(void) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1681 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1682 | CHAR_T *command = command_ps; |
| 1683 | |
| 1684 | while (cursor > 0 && BB_isspace(command[cursor-1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1685 | input_backward(1); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1686 | while (cursor > 0 && !BB_isspace(command[cursor-1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1687 | input_backward(1); |
| 1688 | } |
| 1689 | |
"Vladimir N. Oleynik" | e4baaa2 | 2005-09-22 12:59:26 +0000 | [diff] [blame] | 1690 | static void |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1691 | vi_back_motion(void) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1692 | { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1693 | CHAR_T *command = command_ps; |
| 1694 | |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1695 | if (cursor <= 0) |
| 1696 | return; |
| 1697 | input_backward(1); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1698 | while (cursor > 0 && BB_isspace(command[cursor])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1699 | input_backward(1); |
| 1700 | if (cursor <= 0) |
| 1701 | return; |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1702 | if (BB_isalnum_or_underscore(command[cursor])) { |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1703 | while (cursor > 0 |
Natanael Copa | 7e6f931 | 2016-08-14 23:30:29 +0200 | [diff] [blame] | 1704 | && (BB_isalnum_or_underscore(command[cursor-1])) |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1705 | ) { |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1706 | input_backward(1); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 1707 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 1708 | } else if (BB_ispunct(command[cursor])) { |
| 1709 | while (cursor > 0 && BB_ispunct(command[cursor-1])) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 1710 | input_backward(1); |
| 1711 | } |
| 1712 | } |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1713 | #endif |
| 1714 | |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 1715 | /* Modelled after bash 4.0 behavior of Ctrl-<arrow> */ |
| 1716 | static void ctrl_left(void) |
| 1717 | { |
| 1718 | CHAR_T *command = command_ps; |
| 1719 | |
| 1720 | while (1) { |
| 1721 | CHAR_T c; |
| 1722 | |
| 1723 | input_backward(1); |
| 1724 | if (cursor == 0) |
| 1725 | break; |
| 1726 | c = command[cursor]; |
| 1727 | if (c != ' ' && !BB_ispunct(c)) { |
| 1728 | /* we reached a "word" delimited by spaces/punct. |
| 1729 | * go to its beginning */ |
| 1730 | while (1) { |
| 1731 | c = command[cursor - 1]; |
| 1732 | if (c == ' ' || BB_ispunct(c)) |
| 1733 | break; |
| 1734 | input_backward(1); |
| 1735 | if (cursor == 0) |
| 1736 | break; |
| 1737 | } |
| 1738 | break; |
| 1739 | } |
| 1740 | } |
| 1741 | } |
| 1742 | static void ctrl_right(void) |
| 1743 | { |
| 1744 | CHAR_T *command = command_ps; |
| 1745 | |
| 1746 | while (1) { |
| 1747 | CHAR_T c; |
| 1748 | |
| 1749 | c = command[cursor]; |
| 1750 | if (c == BB_NUL) |
| 1751 | break; |
| 1752 | if (c != ' ' && !BB_ispunct(c)) { |
| 1753 | /* we reached a "word" delimited by spaces/punct. |
| 1754 | * go to its end + 1 */ |
| 1755 | while (1) { |
| 1756 | input_forward(); |
| 1757 | c = command[cursor]; |
| 1758 | if (c == BB_NUL || c == ' ' || BB_ispunct(c)) |
| 1759 | break; |
| 1760 | } |
| 1761 | break; |
| 1762 | } |
| 1763 | input_forward(); |
| 1764 | } |
| 1765 | } |
| 1766 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1767 | |
| 1768 | /* |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 1769 | * read_line_input and its helpers |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1770 | */ |
| 1771 | |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 1772 | #if ENABLE_FEATURE_EDITING_ASK_TERMINAL |
| 1773 | static void ask_terminal(void) |
| 1774 | { |
| 1775 | /* Ask terminal where is the cursor now. |
| 1776 | * lineedit_read_key handles response and corrects |
| 1777 | * our idea of current cursor position. |
| 1778 | * Testcase: run "echo -n long_line_long_line_long_line", |
| 1779 | * then type in a long, wrapping command and try to |
| 1780 | * delete it using backspace key. |
| 1781 | * Note: we print it _after_ prompt, because |
| 1782 | * prompt may contain CR. Example: PS1='\[\r\n\]\w ' |
| 1783 | */ |
| 1784 | /* Problem: if there is buffered input on stdin, |
| 1785 | * the response will be delivered later, |
| 1786 | * possibly to an unsuspecting application. |
| 1787 | * Testcase: "sleep 1; busybox ash" + press and hold [Enter]. |
| 1788 | * Result: |
| 1789 | * ~/srcdevel/bbox/fix/busybox.t4 # |
| 1790 | * ~/srcdevel/bbox/fix/busybox.t4 # |
| 1791 | * ^[[59;34~/srcdevel/bbox/fix/busybox.t4 # <-- garbage |
| 1792 | * ~/srcdevel/bbox/fix/busybox.t4 # |
| 1793 | * |
| 1794 | * Checking for input with poll only makes the race narrower, |
| 1795 | * I still can trigger it. Strace: |
| 1796 | * |
| 1797 | * write(1, "~/srcdevel/bbox/fix/busybox.t4 # ", 33) = 33 |
| 1798 | * poll([{fd=0, events=POLLIN}], 1, 0) = 0 (Timeout) <-- no input exists |
| 1799 | * write(1, "\33[6n", 4) = 4 <-- send the ESC sequence, quick! |
Alexey Fomenko | 232ebaa | 2011-05-20 04:26:29 +0200 | [diff] [blame] | 1800 | * poll([{fd=0, events=POLLIN}], 1, -1) = 1 ([{fd=0, revents=POLLIN}]) |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 1801 | * read(0, "\n", 1) = 1 <-- oh crap, user's input got in first |
| 1802 | */ |
Denys Vlasenko | 451add4 | 2010-07-25 00:06:41 +0200 | [diff] [blame] | 1803 | struct pollfd pfd; |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 1804 | |
Denys Vlasenko | 451add4 | 2010-07-25 00:06:41 +0200 | [diff] [blame] | 1805 | pfd.fd = STDIN_FILENO; |
| 1806 | pfd.events = POLLIN; |
| 1807 | if (safe_poll(&pfd, 1, 0) == 0) { |
| 1808 | S.sent_ESC_br6n = 1; |
Marek Polacek | 7b18107 | 2010-10-28 21:34:56 +0200 | [diff] [blame] | 1809 | fputs(ESC"[6n", stdout); |
Denys Vlasenko | 451add4 | 2010-07-25 00:06:41 +0200 | [diff] [blame] | 1810 | fflush_all(); /* make terminal see it ASAP! */ |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 1811 | } |
| 1812 | } |
| 1813 | #else |
| 1814 | #define ask_terminal() ((void)0) |
| 1815 | #endif |
| 1816 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 1817 | /* Note about multi-line PS1 (e.g. "\n\w \u@\h\n> ") and prompt redrawing: |
| 1818 | * |
| 1819 | * If the prompt has any newlines, after we print it once we use only its last |
| 1820 | * line to redraw in-place, which makes it simpler to calculate how many lines |
| 1821 | * we should move the cursor up to align the redraw (cmdedit_y). The earlier |
| 1822 | * prompt lines just stay on screen and we redraw below them. |
| 1823 | * |
| 1824 | * Use cases for all prompt lines beyond the initial draw: |
| 1825 | * - After clear-screen (^L) or after displaying tab-completion choices, we |
| 1826 | * print the full prompt, as it isn't redrawn in-place. |
| 1827 | * - During terminal resize we could try to redraw all lines, but we don't, |
| 1828 | * because it requires delicate alignment, it's good enough with only the |
| 1829 | * last line, and doing it wrong is arguably worse than not doing it at all. |
| 1830 | * |
| 1831 | * Terminology wise, if it doesn't mention "full", then it means the last/sole |
| 1832 | * prompt line. We use the prompt (last/sole line) while redrawing in-place, |
| 1833 | * and the full where we need a fresh one unrelated to an earlier position. |
| 1834 | * |
| 1835 | * If PS1 is not multiline, the last/sole line and the full are the same string. |
| 1836 | */ |
| 1837 | |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1838 | /* Called just once at read_line_input() init time */ |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 1839 | #if !ENABLE_FEATURE_EDITING_FANCY_PROMPT |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 1840 | static void parse_and_put_prompt(const char *prmt_ptr) |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1841 | { |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1842 | const char *p; |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 1843 | cmdedit_prompt = prompt_last_line = prmt_ptr; |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1844 | p = strrchr(prmt_ptr, '\n'); |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 1845 | if (p) |
| 1846 | prompt_last_line = p + 1; |
| 1847 | cmdedit_prmt_len = unicode_strwidth(prompt_last_line); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1848 | put_prompt(); |
| 1849 | } |
| 1850 | #else |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 1851 | static void parse_and_put_prompt(const char *prmt_ptr) |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1852 | { |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1853 | int prmt_size = 0; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1854 | char *prmt_mem_ptr = xzalloc(1); |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1855 | # if ENABLE_USERNAME_OR_HOMEDIR |
| 1856 | char *cwd_buf = NULL; |
| 1857 | # endif |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1858 | char flg_not_length = '['; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1859 | char cbuf[2]; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1860 | |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 1861 | /*cmdedit_prmt_len = 0; - already is */ |
Denis Vlasenko | 6258fd3 | 2007-01-22 07:30:26 +0000 | [diff] [blame] | 1862 | |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1863 | cbuf[1] = '\0'; /* never changes */ |
| 1864 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1865 | while (*prmt_ptr) { |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1866 | char timebuf[sizeof("HH:MM:SS")]; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1867 | char *free_me = NULL; |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 1868 | char *pbuf; |
| 1869 | char c; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1870 | |
| 1871 | pbuf = cbuf; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1872 | c = *prmt_ptr++; |
| 1873 | if (c == '\\') { |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1874 | const char *cp; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1875 | int l; |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1876 | /* |
| 1877 | * Supported via bb_process_escape_sequence: |
| 1878 | * \a ASCII bell character (07) |
| 1879 | * \e ASCII escape character (033) |
| 1880 | * \n newline |
| 1881 | * \r carriage return |
| 1882 | * \\ backslash |
| 1883 | * \nnn char with octal code nnn |
| 1884 | * Supported: |
| 1885 | * \$ if the effective UID is 0, a #, otherwise a $ |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1886 | * \w current working directory, with $HOME abbreviated with a tilde |
| 1887 | * Note: we do not support $PROMPT_DIRTRIM=n feature |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1888 | * \W basename of the current working directory, with $HOME abbreviated with a tilde |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1889 | * \h hostname up to the first '.' |
| 1890 | * \H hostname |
| 1891 | * \u username |
| 1892 | * \[ begin a sequence of non-printing characters |
| 1893 | * \] end a sequence of non-printing characters |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1894 | * \T current time in 12-hour HH:MM:SS format |
| 1895 | * \@ current time in 12-hour am/pm format |
| 1896 | * \A current time in 24-hour HH:MM format |
| 1897 | * \t current time in 24-hour HH:MM:SS format |
| 1898 | * (all of the above work as \A) |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1899 | * Not supported: |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1900 | * \! history number of this command |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1901 | * \# command number of this command |
| 1902 | * \j number of jobs currently managed by the shell |
| 1903 | * \l basename of the shell's terminal device name |
| 1904 | * \s name of the shell, the basename of $0 (the portion following the final slash) |
| 1905 | * \V release of bash, version + patch level (e.g., 2.00.0) |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1906 | * \d date in "Weekday Month Date" format (e.g., "Tue May 26") |
| 1907 | * \D{format} |
| 1908 | * format is passed to strftime(3). |
| 1909 | * An empty format results in a locale-specific time representation. |
| 1910 | * The braces are required. |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1911 | * Mishandled by bb_process_escape_sequence: |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1912 | * \v version of bash (e.g., 2.00) |
| 1913 | */ |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1914 | cp = prmt_ptr; |
| 1915 | c = *cp; |
| 1916 | if (c != 't') /* don't treat \t as tab */ |
| 1917 | c = bb_process_escape_sequence(&prmt_ptr); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1918 | if (prmt_ptr == cp) { |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 1919 | if (*cp == '\0') |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1920 | break; |
| 1921 | c = *prmt_ptr++; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1922 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1923 | switch (c) { |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 1924 | # if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1925 | case 'u': |
Denis Vlasenko | 86b29ea | 2007-09-27 10:17:16 +0000 | [diff] [blame] | 1926 | pbuf = user_buf ? user_buf : (char*)""; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1927 | break; |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 1928 | # endif |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1929 | case 'H': |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1930 | case 'h': |
Denis Vlasenko | 6f1713f | 2008-02-25 23:23:58 +0000 | [diff] [blame] | 1931 | pbuf = free_me = safe_gethostname(); |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1932 | if (c == 'h') |
| 1933 | strchrnul(pbuf, '.')[0] = '\0'; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1934 | break; |
| 1935 | case '$': |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 1936 | c = (geteuid() == 0 ? '#' : '$'); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1937 | break; |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1938 | case 'T': /* 12-hour HH:MM:SS format */ |
| 1939 | case '@': /* 12-hour am/pm format */ |
| 1940 | case 'A': /* 24-hour HH:MM format */ |
| 1941 | case 't': /* 24-hour HH:MM:SS format */ |
| 1942 | /* We show all of them as 24-hour HH:MM */ |
| 1943 | strftime_HHMMSS(timebuf, sizeof(timebuf), NULL)[-3] = '\0'; |
| 1944 | pbuf = timebuf; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1945 | break; |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1946 | # if ENABLE_USERNAME_OR_HOMEDIR |
| 1947 | case 'w': /* current dir */ |
| 1948 | case 'W': /* basename of cur dir */ |
| 1949 | if (!cwd_buf) { |
| 1950 | cwd_buf = xrealloc_getcwd_or_warn(NULL); |
| 1951 | if (!cwd_buf) |
| 1952 | cwd_buf = (char *)bb_msg_unknown; |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 1953 | else if (home_pwd_buf[0]) { |
| 1954 | char *after_home_user; |
| 1955 | |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1956 | /* /home/user[/something] -> ~[/something] */ |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 1957 | after_home_user = is_prefixed_with(cwd_buf, home_pwd_buf); |
| 1958 | if (after_home_user |
| 1959 | && (*after_home_user == '/' || *after_home_user == '\0') |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1960 | ) { |
| 1961 | cwd_buf[0] = '~'; |
Denys Vlasenko | 8dff01d | 2015-03-12 17:48:34 +0100 | [diff] [blame] | 1962 | overlapping_strcpy(cwd_buf + 1, after_home_user); |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1963 | } |
| 1964 | } |
| 1965 | } |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1966 | pbuf = cwd_buf; |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1967 | if (c == 'w') |
| 1968 | break; |
Denis Vlasenko | dc757aa | 2007-06-30 08:04:05 +0000 | [diff] [blame] | 1969 | cp = strrchr(pbuf, '/'); |
Denys Vlasenko | 8172d05 | 2013-03-29 13:21:53 +0100 | [diff] [blame] | 1970 | if (cp) |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1971 | pbuf = (char*)cp + 1; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1972 | break; |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 1973 | # endif |
Denys Vlasenko | 6c852bf | 2013-03-28 13:20:12 +0100 | [diff] [blame] | 1974 | // bb_process_escape_sequence does this now: |
| 1975 | // case 'e': case 'E': /* \e \E = \033 */ |
| 1976 | // c = '\033'; |
| 1977 | // break; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1978 | case 'x': case 'X': { |
| 1979 | char buf2[4]; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1980 | for (l = 0; l < 3;) { |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1981 | unsigned h; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1982 | buf2[l++] = *prmt_ptr; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1983 | buf2[l] = '\0'; |
| 1984 | h = strtoul(buf2, &pbuf, 16); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1985 | if (h > UCHAR_MAX || (pbuf - buf2) < l) { |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1986 | buf2[--l] = '\0'; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1987 | break; |
| 1988 | } |
| 1989 | prmt_ptr++; |
| 1990 | } |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1991 | c = (char)strtoul(buf2, NULL, 16); |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1992 | if (c == 0) |
| 1993 | c = '?'; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1994 | pbuf = cbuf; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1995 | break; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 1996 | } |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 1997 | case '[': case ']': |
| 1998 | if (c == flg_not_length) { |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 1999 | /* Toggle '['/']' hex 5b/5d */ |
| 2000 | flg_not_length ^= 6; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2001 | continue; |
| 2002 | } |
| 2003 | break; |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 2004 | } /* switch */ |
| 2005 | } /* if */ |
| 2006 | } /* if */ |
| 2007 | cbuf[0] = c; |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 2008 | { |
| 2009 | int n = strlen(pbuf); |
| 2010 | prmt_size += n; |
| 2011 | if (c == '\n') |
| 2012 | cmdedit_prmt_len = 0; |
| 2013 | else if (flg_not_length != ']') { |
| 2014 | #if 0 /*ENABLE_UNICODE_SUPPORT*/ |
| 2015 | /* Won't work, pbuf is one BYTE string here instead of an one Unicode char string. */ |
| 2016 | /* FIXME */ |
Denys Vlasenko | 1b9ac21 | 2013-08-20 16:13:05 +0200 | [diff] [blame] | 2017 | cmdedit_prmt_len += unicode_strwidth(pbuf); |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2018 | #else |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 2019 | cmdedit_prmt_len += n; |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2020 | #endif |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 2021 | } |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2022 | } |
Denys Vlasenko | e66a56d | 2013-08-19 16:45:04 +0200 | [diff] [blame] | 2023 | prmt_mem_ptr = strcat(xrealloc(prmt_mem_ptr, prmt_size+1), pbuf); |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 2024 | free(free_me); |
| 2025 | } /* while */ |
| 2026 | |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 2027 | # if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 7221c8c | 2007-12-03 10:45:14 +0000 | [diff] [blame] | 2028 | if (cwd_buf != (char *)bb_msg_unknown) |
| 2029 | free(cwd_buf); |
Denys Vlasenko | 1d14569 | 2013-03-29 13:09:05 +0100 | [diff] [blame] | 2030 | # endif |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2031 | /* see comment (above this function) about multiline prompt redrawing */ |
| 2032 | cmdedit_prompt = prompt_last_line = prmt_mem_ptr; |
| 2033 | prmt_ptr = strrchr(cmdedit_prompt, '\n'); |
| 2034 | if (prmt_ptr) |
| 2035 | prompt_last_line = prmt_ptr + 1; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2036 | put_prompt(); |
| 2037 | } |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2038 | #endif |
| 2039 | |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2040 | #if ENABLE_FEATURE_EDITING_WINCH |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2041 | static void cmdedit_setwidth(void) |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2042 | { |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2043 | int new_y; |
| 2044 | |
| 2045 | cmdedit_termw = get_terminal_width(STDIN_FILENO); |
| 2046 | /* new y for current cursor */ |
| 2047 | new_y = (cursor + cmdedit_prmt_len) / cmdedit_termw; |
| 2048 | /* redraw */ |
| 2049 | redraw((new_y >= cmdedit_y ? new_y : cmdedit_y), command_len - cursor); |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2050 | } |
| 2051 | |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2052 | static void win_changed(int nsig UNUSED_PARAM) |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2053 | { |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2054 | if (S.ok_to_redraw) { |
| 2055 | /* We are in read_key(), safe to redraw immediately */ |
| 2056 | int sv_errno = errno; |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2057 | cmdedit_setwidth(); |
| 2058 | fflush_all(); |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2059 | errno = sv_errno; |
| 2060 | } else { |
| 2061 | /* Signal main loop that redraw is necessary */ |
| 2062 | S.SIGWINCH_count++; |
| 2063 | } |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2064 | } |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2065 | #endif |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2066 | |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 2067 | static int lineedit_read_key(char *read_key_buffer, int timeout) |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2068 | { |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 2069 | int64_t ic; |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2070 | #if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2071 | char unicode_buf[MB_CUR_MAX + 1]; |
| 2072 | int unicode_idx = 0; |
| 2073 | #endif |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 2074 | |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2075 | fflush_all(); |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2076 | while (1) { |
| 2077 | /* Wait for input. TIMEOUT = -1 makes read_key wait even |
| 2078 | * on nonblocking stdin, TIMEOUT = 50 makes sure we won't |
| 2079 | * insist on full MB_CUR_MAX buffer to declare input like |
| 2080 | * "\xff\n",pause,"ls\n" invalid and thus won't lose "ls". |
| 2081 | * |
| 2082 | * Note: read_key sets errno to 0 on success. |
| 2083 | */ |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2084 | IF_FEATURE_EDITING_WINCH(S.ok_to_redraw = 1;) |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2085 | ic = read_key(STDIN_FILENO, read_key_buffer, timeout); |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2086 | IF_FEATURE_EDITING_WINCH(S.ok_to_redraw = 0;) |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2087 | if (errno) { |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2088 | #if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2089 | if (errno == EAGAIN && unicode_idx != 0) |
| 2090 | goto pushback; |
Denys Vlasenko | 1f6d230 | 2009-10-29 03:45:26 +0100 | [diff] [blame] | 2091 | #endif |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2092 | break; |
Denys Vlasenko | 4b7db4f | 2009-05-29 10:39:06 +0200 | [diff] [blame] | 2093 | } |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2094 | |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2095 | #if ENABLE_FEATURE_EDITING_ASK_TERMINAL |
| 2096 | if ((int32_t)ic == KEYCODE_CURSOR_POS |
Denys Vlasenko | d83bbf4 | 2009-10-27 10:47:49 +0100 | [diff] [blame] | 2097 | && S.sent_ESC_br6n |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 2098 | ) { |
Denys Vlasenko | d83bbf4 | 2009-10-27 10:47:49 +0100 | [diff] [blame] | 2099 | S.sent_ESC_br6n = 0; |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2100 | if (cursor == 0) { /* otherwise it may be bogus */ |
| 2101 | int col = ((ic >> 32) & 0x7fff) - 1; |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2102 | /* |
| 2103 | * Is col > cmdedit_prmt_len? |
| 2104 | * If yes (terminal says cursor is farther to the right |
| 2105 | * of where we think it should be), |
| 2106 | * the prompt wasn't printed starting at col 1, |
| 2107 | * there was additional text before it. |
| 2108 | */ |
| 2109 | if ((int)(col - cmdedit_prmt_len) > 0) { |
| 2110 | /* Fix our understanding of current x position */ |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2111 | cmdedit_x += (col - cmdedit_prmt_len); |
| 2112 | while (cmdedit_x >= cmdedit_termw) { |
| 2113 | cmdedit_x -= cmdedit_termw; |
| 2114 | cmdedit_y++; |
| 2115 | } |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 2116 | } |
| 2117 | } |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2118 | continue; |
Denys Vlasenko | 020f406 | 2009-05-17 16:44:54 +0200 | [diff] [blame] | 2119 | } |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2120 | #endif |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2121 | |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2122 | #if ENABLE_UNICODE_SUPPORT |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2123 | if (unicode_status == UNICODE_ON) { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2124 | wchar_t wc; |
| 2125 | |
| 2126 | if ((int32_t)ic < 0) /* KEYCODE_xxx */ |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2127 | break; |
| 2128 | // TODO: imagine sequence like: 0xff,<left-arrow>: we are currently losing 0xff... |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2129 | |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2130 | unicode_buf[unicode_idx++] = ic; |
| 2131 | unicode_buf[unicode_idx] = '\0'; |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2132 | if (mbstowcs(&wc, unicode_buf, 1) != 1) { |
| 2133 | /* Not (yet?) a valid unicode char */ |
| 2134 | if (unicode_idx < MB_CUR_MAX) { |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2135 | timeout = 50; |
| 2136 | continue; |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2137 | } |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2138 | pushback: |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2139 | /* Invalid sequence. Save all "bad bytes" except first */ |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2140 | read_key_ungets(read_key_buffer, unicode_buf + 1, unicode_idx - 1); |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 2141 | # if !ENABLE_UNICODE_PRESERVE_BROKEN |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2142 | ic = CONFIG_SUBST_WCHAR; |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 2143 | # else |
Tomas Heinrich | b8909c5 | 2010-05-16 20:46:53 +0200 | [diff] [blame] | 2144 | ic = unicode_mark_raw_byte(unicode_buf[0]); |
Tomas Heinrich | a659b81 | 2010-04-29 13:43:39 +0200 | [diff] [blame] | 2145 | # endif |
Tomas Heinrich | d2b0405 | 2010-03-09 14:09:24 +0100 | [diff] [blame] | 2146 | } else { |
| 2147 | /* Valid unicode char, return its code */ |
| 2148 | ic = wc; |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2149 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2150 | } |
| 2151 | #endif |
Denys Vlasenko | 58f108e | 2010-03-11 21:17:55 +0100 | [diff] [blame] | 2152 | break; |
| 2153 | } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2154 | |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2155 | return ic; |
| 2156 | } |
| 2157 | |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2158 | #if ENABLE_UNICODE_BIDI_SUPPORT |
| 2159 | static int isrtl_str(void) |
| 2160 | { |
| 2161 | int idx = cursor; |
Tomas Heinrich | aa16755 | 2010-03-26 13:13:24 +0100 | [diff] [blame] | 2162 | |
| 2163 | while (idx < command_len && unicode_bidi_is_neutral_wchar(command_ps[idx])) |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2164 | idx++; |
Tomas Heinrich | aa16755 | 2010-03-26 13:13:24 +0100 | [diff] [blame] | 2165 | return unicode_bidi_isrtl(command_ps[idx]); |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2166 | } |
| 2167 | #else |
| 2168 | # define isrtl_str() 0 |
| 2169 | #endif |
| 2170 | |
Paul Fox | 0f2dd9f | 2006-03-07 20:26:11 +0000 | [diff] [blame] | 2171 | /* leave out the "vi-mode"-only case labels if vi editing isn't |
| 2172 | * configured. */ |
Denys Vlasenko | 1302892 | 2009-07-12 00:51:15 +0200 | [diff] [blame] | 2173 | #define vi_case(caselabel) IF_FEATURE_EDITING_VI(case caselabel) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2174 | |
| 2175 | /* convert uppercase ascii to equivalent control char, for readability */ |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2176 | #undef CTRL |
| 2177 | #define CTRL(a) ((a) & ~0x40) |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2178 | |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2179 | enum { |
| 2180 | VI_CMDMODE_BIT = 0x40000000, |
| 2181 | /* 0x80000000 bit flags KEYCODE_xxx */ |
| 2182 | }; |
| 2183 | |
| 2184 | #if ENABLE_FEATURE_REVERSE_SEARCH |
| 2185 | /* Mimic readline Ctrl-R reverse history search. |
| 2186 | * When invoked, it shows the following prompt: |
| 2187 | * (reverse-i-search)'': user_input [cursor pos unchanged by Ctrl-R] |
| 2188 | * and typing results in search being performed: |
| 2189 | * (reverse-i-search)'tmp': cd /tmp [cursor under t in /tmp] |
| 2190 | * Search is performed by looking at progressively older lines in history. |
| 2191 | * Ctrl-R again searches for the next match in history. |
| 2192 | * Backspace deletes last matched char. |
| 2193 | * Control keys exit search and return to normal editing (at current history line). |
| 2194 | */ |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2195 | static int32_t reverse_i_search(int timeout) |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2196 | { |
| 2197 | char match_buf[128]; /* for user input */ |
| 2198 | char read_key_buffer[KEYCODE_BUFFER_SIZE]; |
| 2199 | const char *matched_history_line; |
| 2200 | const char *saved_prompt; |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2201 | unsigned saved_prmt_len; |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2202 | int32_t ic; |
| 2203 | |
| 2204 | matched_history_line = NULL; |
| 2205 | read_key_buffer[0] = 0; |
| 2206 | match_buf[0] = '\0'; |
| 2207 | |
| 2208 | /* Save and replace the prompt */ |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2209 | saved_prompt = prompt_last_line; |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2210 | saved_prmt_len = cmdedit_prmt_len; |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2211 | goto set_prompt; |
| 2212 | |
| 2213 | while (1) { |
| 2214 | int h; |
| 2215 | unsigned match_buf_len = strlen(match_buf); |
| 2216 | |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2217 | //FIXME: correct timeout? (i.e. count it down?) |
| 2218 | ic = lineedit_read_key(read_key_buffer, timeout); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2219 | |
| 2220 | switch (ic) { |
| 2221 | case CTRL('R'): /* searching for the next match */ |
| 2222 | break; |
| 2223 | |
| 2224 | case '\b': |
| 2225 | case '\x7f': |
| 2226 | /* Backspace */ |
| 2227 | if (unicode_status == UNICODE_ON) { |
| 2228 | while (match_buf_len != 0) { |
| 2229 | uint8_t c = match_buf[--match_buf_len]; |
| 2230 | if ((c & 0xc0) != 0x80) /* start of UTF-8 char? */ |
| 2231 | break; /* yes */ |
| 2232 | } |
| 2233 | } else { |
| 2234 | if (match_buf_len != 0) |
| 2235 | match_buf_len--; |
| 2236 | } |
| 2237 | match_buf[match_buf_len] = '\0'; |
| 2238 | break; |
| 2239 | |
| 2240 | default: |
| 2241 | if (ic < ' ' |
| 2242 | || (!ENABLE_UNICODE_SUPPORT && ic >= 256) |
| 2243 | || (ENABLE_UNICODE_SUPPORT && ic >= VI_CMDMODE_BIT) |
| 2244 | ) { |
| 2245 | goto ret; |
| 2246 | } |
| 2247 | |
| 2248 | /* Append this char */ |
| 2249 | #if ENABLE_UNICODE_SUPPORT |
| 2250 | if (unicode_status == UNICODE_ON) { |
| 2251 | mbstate_t mbstate = { 0 }; |
| 2252 | char buf[MB_CUR_MAX + 1]; |
| 2253 | int len = wcrtomb(buf, ic, &mbstate); |
| 2254 | if (len > 0) { |
| 2255 | buf[len] = '\0'; |
| 2256 | if (match_buf_len + len < sizeof(match_buf)) |
| 2257 | strcpy(match_buf + match_buf_len, buf); |
| 2258 | } |
| 2259 | } else |
| 2260 | #endif |
| 2261 | if (match_buf_len < sizeof(match_buf) - 1) { |
| 2262 | match_buf[match_buf_len] = ic; |
| 2263 | match_buf[match_buf_len + 1] = '\0'; |
| 2264 | } |
| 2265 | break; |
| 2266 | } /* switch (ic) */ |
| 2267 | |
| 2268 | /* Search in history for match_buf */ |
| 2269 | h = state->cur_history; |
| 2270 | if (ic == CTRL('R')) |
| 2271 | h--; |
| 2272 | while (h >= 0) { |
| 2273 | if (state->history[h]) { |
| 2274 | char *match = strstr(state->history[h], match_buf); |
| 2275 | if (match) { |
| 2276 | state->cur_history = h; |
| 2277 | matched_history_line = state->history[h]; |
| 2278 | command_len = load_string(matched_history_line); |
| 2279 | cursor = match - matched_history_line; |
| 2280 | //FIXME: cursor position for Unicode case |
| 2281 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2282 | free((char*)prompt_last_line); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2283 | set_prompt: |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2284 | prompt_last_line = xasprintf("(reverse-i-search)'%s': ", match_buf); |
| 2285 | cmdedit_prmt_len = unicode_strwidth(prompt_last_line); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2286 | goto do_redraw; |
| 2287 | } |
| 2288 | } |
| 2289 | h--; |
| 2290 | } |
| 2291 | |
| 2292 | /* Not found */ |
| 2293 | match_buf[match_buf_len] = '\0'; |
| 2294 | beep(); |
| 2295 | continue; |
| 2296 | |
| 2297 | do_redraw: |
| 2298 | redraw(cmdedit_y, command_len - cursor); |
| 2299 | } /* while (1) */ |
| 2300 | |
| 2301 | ret: |
| 2302 | if (matched_history_line) |
| 2303 | command_len = load_string(matched_history_line); |
| 2304 | |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2305 | free((char*)prompt_last_line); |
| 2306 | prompt_last_line = saved_prompt; |
Denys Vlasenko | 7a18043 | 2013-08-19 16:44:05 +0200 | [diff] [blame] | 2307 | cmdedit_prmt_len = saved_prmt_len; |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2308 | redraw(cmdedit_y, command_len - cursor); |
| 2309 | |
| 2310 | return ic; |
| 2311 | } |
| 2312 | #endif |
| 2313 | |
Denys Vlasenko | 23427a6 | 2018-12-08 15:45:46 +0100 | [diff] [blame] | 2314 | #if ENABLE_FEATURE_EDITING_WINCH |
Denys Vlasenko | 136fe9b | 2018-12-08 13:49:15 +0100 | [diff] [blame] | 2315 | static void sigaction2(int sig, struct sigaction *act) |
| 2316 | { |
| 2317 | // Grr... gcc 8.1.1: |
| 2318 | // "passing argument 3 to restrict-qualified parameter aliases with argument 2" |
| 2319 | // dance around that... |
| 2320 | struct sigaction *oact FIX_ALIASING; |
| 2321 | oact = act; |
| 2322 | sigaction(sig, act, oact); |
| 2323 | } |
Denys Vlasenko | 23427a6 | 2018-12-08 15:45:46 +0100 | [diff] [blame] | 2324 | #endif |
Denys Vlasenko | 136fe9b | 2018-12-08 13:49:15 +0100 | [diff] [blame] | 2325 | |
Denys Vlasenko | 5c2e81b | 2009-07-16 14:14:34 +0200 | [diff] [blame] | 2326 | /* maxsize must be >= 2. |
| 2327 | * Returns: |
Denis Vlasenko | 80667e3 | 2008-02-02 18:35:55 +0000 | [diff] [blame] | 2328 | * -1 on read errors or EOF, or on bare Ctrl-D, |
| 2329 | * 0 on ctrl-C (the line entered is still returned in 'command'), |
Denys Vlasenko | 4b89d51 | 2016-11-25 03:41:03 +0100 | [diff] [blame] | 2330 | * (in both cases the cursor remains on the input line, '\n' is not printed) |
Denis Vlasenko | 6a5377a | 2007-09-25 18:35:28 +0000 | [diff] [blame] | 2331 | * >0 length of input string, including terminating '\n' |
| 2332 | */ |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2333 | int FAST_FUNC read_line_input(line_input_t *st, const char *prompt, char *command, int maxsize) |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 2334 | { |
Denys Vlasenko | aaaaaa5 | 2017-09-15 17:14:01 +0200 | [diff] [blame] | 2335 | int len, n; |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2336 | int timeout; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2337 | #if ENABLE_FEATURE_TAB_COMPLETION |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 2338 | smallint lastWasTab = 0; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2339 | #endif |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2340 | smallint break_out = 0; |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 2341 | #if ENABLE_FEATURE_EDITING_VI |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2342 | smallint vi_cmdmode = 0; |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2343 | #endif |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2344 | struct termios initial_settings; |
| 2345 | struct termios new_settings; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2346 | char read_key_buffer[KEYCODE_BUFFER_SIZE]; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2347 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2348 | INIT_S(); |
| 2349 | |
Denys Vlasenko | aaaaaa5 | 2017-09-15 17:14:01 +0200 | [diff] [blame] | 2350 | n = get_termios_and_make_raw(STDIN_FILENO, &new_settings, &initial_settings, 0 |
| 2351 | | TERMIOS_CLEAR_ISIG /* turn off INTR (ctrl-C), QUIT, SUSP */ |
| 2352 | ); |
| 2353 | if (n != 0 || (initial_settings.c_lflag & (ECHO|ICANON)) == ICANON) { |
Denys Vlasenko | d598a8d | 2014-12-10 17:22:13 +0100 | [diff] [blame] | 2354 | /* Happens when e.g. stty -echo was run before. |
| 2355 | * But if ICANON is not set, we don't come here. |
| 2356 | * (example: interactive python ^Z-backgrounded, |
| 2357 | * tty is still in "raw mode"). |
| 2358 | */ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2359 | parse_and_put_prompt(prompt); |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2360 | fflush_all(); |
Denis Vlasenko | 9cb220b | 2007-12-09 10:03:28 +0000 | [diff] [blame] | 2361 | if (fgets(command, maxsize, stdin) == NULL) |
| 2362 | len = -1; /* EOF or error */ |
| 2363 | else |
| 2364 | len = strlen(command); |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2365 | DEINIT_S(); |
| 2366 | return len; |
Denis Vlasenko | 037576d | 2007-10-20 18:30:38 +0000 | [diff] [blame] | 2367 | } |
| 2368 | |
Denys Vlasenko | 2805502 | 2010-01-04 20:49:58 +0100 | [diff] [blame] | 2369 | init_unicode(); |
Denys Vlasenko | 42a8fd0 | 2009-07-11 21:36:13 +0200 | [diff] [blame] | 2370 | |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2371 | // FIXME: audit & improve this |
Denis Vlasenko | e8a0788 | 2007-06-10 15:08:44 +0000 | [diff] [blame] | 2372 | if (maxsize > MAX_LINELEN) |
| 2373 | maxsize = MAX_LINELEN; |
Denys Vlasenko | 044b180 | 2009-07-12 02:50:35 +0200 | [diff] [blame] | 2374 | S.maxsize = maxsize; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2375 | |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2376 | timeout = -1; |
| 2377 | /* Make state->flags == 0 if st is NULL. |
| 2378 | * With zeroed flags, no other fields are ever referenced. |
| 2379 | */ |
| 2380 | state = (line_input_t*) &const_int_0; |
| 2381 | if (st) { |
| 2382 | state = st; |
| 2383 | timeout = st->timeout; |
| 2384 | } |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 2385 | #if MAX_HISTORY > 0 |
Denys Vlasenko | 779f96a | 2019-02-04 16:16:30 +0100 | [diff] [blame^] | 2386 | if (state->flags & DO_HISTORY) { |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 2387 | # if ENABLE_FEATURE_EDITING_SAVEHISTORY |
Denys Vlasenko | 779f96a | 2019-02-04 16:16:30 +0100 | [diff] [blame^] | 2388 | if (state->hist_file) |
| 2389 | if (state->cnt_history == 0) |
| 2390 | load_history(state); |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 2391 | # endif |
Denis Vlasenko | 3c385cd | 2008-11-02 00:41:05 +0000 | [diff] [blame] | 2392 | state->cur_history = state->cnt_history; |
Denys Vlasenko | 779f96a | 2019-02-04 16:16:30 +0100 | [diff] [blame^] | 2393 | } |
Denys Vlasenko | db9c57e | 2009-09-27 02:48:53 +0200 | [diff] [blame] | 2394 | #endif |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2395 | |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2396 | /* prepare before init handlers */ |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 2397 | cmdedit_y = 0; /* quasireal y, not true if line > xt*yt */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2398 | command_len = 0; |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2399 | #if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2400 | command_ps = xzalloc(maxsize * sizeof(command_ps[0])); |
| 2401 | #else |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 2402 | command_ps = command; |
Denis Vlasenko | 47bdb3a | 2007-01-21 19:18:59 +0000 | [diff] [blame] | 2403 | command[0] = '\0'; |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2404 | #endif |
| 2405 | #define command command_must_not_be_used |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 2406 | |
Denis Vlasenko | 202ac50 | 2008-11-05 13:20:58 +0000 | [diff] [blame] | 2407 | tcsetattr_stdin_TCSANOW(&new_settings); |
Erik Andersen | 13456d1 | 2000-03-16 08:09:57 +0000 | [diff] [blame] | 2408 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 2409 | #if ENABLE_USERNAME_OR_HOMEDIR |
Denis Vlasenko | 6258fd3 | 2007-01-22 07:30:26 +0000 | [diff] [blame] | 2410 | { |
| 2411 | struct passwd *entry; |
| 2412 | |
| 2413 | entry = getpwuid(geteuid()); |
| 2414 | if (entry) { |
| 2415 | user_buf = xstrdup(entry->pw_name); |
| 2416 | home_pwd_buf = xstrdup(entry->pw_dir); |
| 2417 | } |
| 2418 | } |
| 2419 | #endif |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 2420 | |
| 2421 | #if 0 |
Denys Vlasenko | 2c4de5b | 2011-03-31 13:16:52 +0200 | [diff] [blame] | 2422 | for (i = 0; i <= state->max_history; i++) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2423 | bb_error_msg("history[%d]:'%s'", i, state->history[i]); |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 2424 | bb_error_msg("cur_history:%d cnt_history:%d", state->cur_history, state->cnt_history); |
| 2425 | #endif |
| 2426 | |
Denys Vlasenko | 0a67722 | 2017-11-08 13:38:12 +0100 | [diff] [blame] | 2427 | /* Get width (before printing prompt) */ |
| 2428 | cmdedit_termw = get_terminal_width(STDIN_FILENO); |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 2429 | /* Print out the command prompt, optionally ask where cursor is */ |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2430 | parse_and_put_prompt(prompt); |
Denys Vlasenko | 13ad906 | 2009-11-11 03:19:30 +0100 | [diff] [blame] | 2431 | ask_terminal(); |
Eric Andersen | b3dc3b8 | 2001-01-04 11:08:45 +0000 | [diff] [blame] | 2432 | |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2433 | #if ENABLE_FEATURE_EDITING_WINCH |
Alexey Fomenko | 232ebaa | 2011-05-20 04:26:29 +0200 | [diff] [blame] | 2434 | /* Install window resize handler (NB: after *all* init is complete) */ |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2435 | S.SIGWINCH_handler.sa_handler = win_changed; |
| 2436 | S.SIGWINCH_handler.sa_flags = SA_RESTART; |
Denys Vlasenko | 136fe9b | 2018-12-08 13:49:15 +0100 | [diff] [blame] | 2437 | sigaction2(SIGWINCH, &S.SIGWINCH_handler); |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2438 | #endif |
Denys Vlasenko | c396fe6 | 2009-05-17 19:28:14 +0200 | [diff] [blame] | 2439 | read_key_buffer[0] = 0; |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2440 | while (1) { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2441 | /* |
| 2442 | * The emacs and vi modes share much of the code in the big |
| 2443 | * command loop. Commands entered when in vi's command mode |
| 2444 | * (aka "escape mode") get an extra bit added to distinguish |
| 2445 | * them - this keeps them from being self-inserted. This |
| 2446 | * clutters the big switch a bit, but keeps all the code |
| 2447 | * in one place. |
| 2448 | */ |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2449 | int32_t ic, ic_raw; |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2450 | #if ENABLE_FEATURE_EDITING_WINCH |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2451 | unsigned count; |
| 2452 | |
| 2453 | count = S.SIGWINCH_count; |
| 2454 | if (S.SIGWINCH_saved != count) { |
| 2455 | S.SIGWINCH_saved = count; |
Denys Vlasenko | 038a977 | 2016-11-28 01:10:16 +0100 | [diff] [blame] | 2456 | cmdedit_setwidth(); |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2457 | } |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2458 | #endif |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 2459 | ic = ic_raw = lineedit_read_key(read_key_buffer, timeout); |
Paul Fox | 0f2dd9f | 2006-03-07 20:26:11 +0000 | [diff] [blame] | 2460 | |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2461 | #if ENABLE_FEATURE_REVERSE_SEARCH |
| 2462 | again: |
| 2463 | #endif |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 2464 | #if ENABLE_FEATURE_EDITING_VI |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2465 | newdelflag = 1; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2466 | if (vi_cmdmode) { |
| 2467 | /* btw, since KEYCODE_xxx are all < 0, this doesn't |
| 2468 | * change ic if it contains one of them: */ |
| 2469 | ic |= VI_CMDMODE_BIT; |
| 2470 | } |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2471 | #endif |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2472 | |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2473 | switch (ic) { |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2474 | case '\n': |
| 2475 | case '\r': |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2476 | vi_case('\n'|VI_CMDMODE_BIT:) |
| 2477 | vi_case('\r'|VI_CMDMODE_BIT:) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2478 | /* Enter */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2479 | goto_new_line(); |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2480 | break_out = 1; |
| 2481 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2482 | case CTRL('A'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2483 | vi_case('0'|VI_CMDMODE_BIT:) |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2484 | /* Control-a -- Beginning of line */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2485 | input_backward(cursor); |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 2486 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2487 | case CTRL('B'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2488 | vi_case('h'|VI_CMDMODE_BIT:) |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2489 | vi_case('\b'|VI_CMDMODE_BIT:) /* ^H */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2490 | vi_case('\x7f'|VI_CMDMODE_BIT:) /* DEL */ |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2491 | input_backward(1); /* Move back one character */ |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2492 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2493 | case CTRL('E'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2494 | vi_case('$'|VI_CMDMODE_BIT:) |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2495 | /* Control-e -- End of line */ |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2496 | put_till_end_and_adv_cursor(); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2497 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2498 | case CTRL('F'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2499 | vi_case('l'|VI_CMDMODE_BIT:) |
| 2500 | vi_case(' '|VI_CMDMODE_BIT:) |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2501 | input_forward(); /* Move forward one character */ |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2502 | break; |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2503 | case '\b': /* ^H */ |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2504 | case '\x7f': /* DEL */ |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2505 | if (!isrtl_str()) |
| 2506 | input_backspace(); |
| 2507 | else |
| 2508 | input_delete(0); |
| 2509 | break; |
| 2510 | case KEYCODE_DELETE: |
| 2511 | if (!isrtl_str()) |
| 2512 | input_delete(0); |
| 2513 | else |
| 2514 | input_backspace(); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2515 | break; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2516 | #if ENABLE_FEATURE_TAB_COMPLETION |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2517 | case '\t': |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2518 | input_tab(&lastWasTab); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2519 | break; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2520 | #endif |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2521 | case CTRL('K'): |
Eric Andersen | c470f44 | 2003-07-28 09:56:35 +0000 | [diff] [blame] | 2522 | /* Control-k -- clear to end of line */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2523 | command_ps[cursor] = BB_NUL; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2524 | command_len = cursor; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2525 | printf(SEQ_CLEAR_TILL_END_OF_SCREEN); |
Eric Andersen | 65a0730 | 2002-04-13 13:26:49 +0000 | [diff] [blame] | 2526 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2527 | case CTRL('L'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2528 | vi_case(CTRL('L')|VI_CMDMODE_BIT:) |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2529 | /* Control-l -- clear screen */ |
Avi Halachmi | 0fd5dbb | 2017-10-12 16:38:35 +0200 | [diff] [blame] | 2530 | /* cursor to top,left; clear to the end of screen */ |
| 2531 | printf(ESC"[H" ESC"[J"); |
| 2532 | draw_full(command_len - cursor); |
Eric Andersen | f1f2bd0 | 2001-12-21 11:20:15 +0000 | [diff] [blame] | 2533 | break; |
Denis Vlasenko | 9d4533e | 2006-11-02 22:09:37 +0000 | [diff] [blame] | 2534 | #if MAX_HISTORY > 0 |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2535 | case CTRL('N'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2536 | vi_case(CTRL('N')|VI_CMDMODE_BIT:) |
| 2537 | vi_case('j'|VI_CMDMODE_BIT:) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2538 | /* Control-n -- Get next command in history */ |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 2539 | if (get_next_history()) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2540 | goto rewrite_line; |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2541 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2542 | case CTRL('P'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2543 | vi_case(CTRL('P')|VI_CMDMODE_BIT:) |
| 2544 | vi_case('k'|VI_CMDMODE_BIT:) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2545 | /* Control-p -- Get previous command from history */ |
Denis Vlasenko | 682ad30 | 2008-09-27 01:28:56 +0000 | [diff] [blame] | 2546 | if (get_previous_history()) |
Erik Andersen | f0657d3 | 2000-04-12 17:49:52 +0000 | [diff] [blame] | 2547 | goto rewrite_line; |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2548 | break; |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 2549 | #endif |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2550 | case CTRL('U'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2551 | vi_case(CTRL('U')|VI_CMDMODE_BIT:) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2552 | /* Control-U -- Clear line before cursor */ |
| 2553 | if (cursor) { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2554 | command_len -= cursor; |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2555 | memmove(command_ps, command_ps + cursor, |
| 2556 | (command_len + 1) * sizeof(command_ps[0])); |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2557 | redraw(cmdedit_y, command_len); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2558 | } |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2559 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2560 | case CTRL('W'): |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2561 | vi_case(CTRL('W')|VI_CMDMODE_BIT:) |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2562 | /* Control-W -- Remove the last word */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2563 | while (cursor > 0 && BB_isspace(command_ps[cursor-1])) |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2564 | input_backspace(); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2565 | while (cursor > 0 && !BB_isspace(command_ps[cursor-1])) |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2566 | input_backspace(); |
| 2567 | break; |
Rostislav Skudnov | 2e4ef38 | 2016-11-24 15:04:00 +0100 | [diff] [blame] | 2568 | case KEYCODE_ALT_D: { |
| 2569 | /* Delete word forward */ |
| 2570 | int nc, sc = cursor; |
| 2571 | ctrl_right(); |
| 2572 | nc = cursor - sc; |
| 2573 | input_backward(nc); |
| 2574 | while (--nc >= 0) |
| 2575 | input_delete(1); |
| 2576 | break; |
| 2577 | } |
| 2578 | case KEYCODE_ALT_BACKSPACE: { |
| 2579 | /* Delete word backward */ |
| 2580 | int sc = cursor; |
| 2581 | ctrl_left(); |
| 2582 | while (sc-- > cursor) |
| 2583 | input_delete(1); |
| 2584 | break; |
| 2585 | } |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2586 | #if ENABLE_FEATURE_REVERSE_SEARCH |
| 2587 | case CTRL('R'): |
Denys Vlasenko | 84ea60e | 2017-08-02 17:27:28 +0200 | [diff] [blame] | 2588 | ic = ic_raw = reverse_i_search(timeout); |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2589 | goto again; |
| 2590 | #endif |
Denis Vlasenko | 00cdbd8 | 2007-01-21 19:21:21 +0000 | [diff] [blame] | 2591 | |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 2592 | #if ENABLE_FEATURE_EDITING_VI |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2593 | case 'i'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2594 | vi_cmdmode = 0; |
| 2595 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2596 | case 'I'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2597 | input_backward(cursor); |
| 2598 | vi_cmdmode = 0; |
| 2599 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2600 | case 'a'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2601 | input_forward(); |
| 2602 | vi_cmdmode = 0; |
| 2603 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2604 | case 'A'|VI_CMDMODE_BIT: |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2605 | put_till_end_and_adv_cursor(); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2606 | vi_cmdmode = 0; |
| 2607 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2608 | case 'x'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2609 | input_delete(1); |
| 2610 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2611 | case 'X'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2612 | if (cursor > 0) { |
| 2613 | input_backward(1); |
| 2614 | input_delete(1); |
| 2615 | } |
| 2616 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2617 | case 'W'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2618 | vi_Word_motion(1); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2619 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2620 | case 'w'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2621 | vi_word_motion(1); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2622 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2623 | case 'E'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2624 | vi_End_motion(); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2625 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2626 | case 'e'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2627 | vi_end_motion(); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2628 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2629 | case 'B'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2630 | vi_Back_motion(); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2631 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2632 | case 'b'|VI_CMDMODE_BIT: |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2633 | vi_back_motion(); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2634 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2635 | case 'C'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2636 | vi_cmdmode = 0; |
| 2637 | /* fall through */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2638 | case 'D'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2639 | goto clear_to_eol; |
| 2640 | |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2641 | case 'c'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2642 | vi_cmdmode = 0; |
| 2643 | /* fall through */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2644 | case 'd'|VI_CMDMODE_BIT: { |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2645 | int nc, sc; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2646 | |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 2647 | ic = lineedit_read_key(read_key_buffer, timeout); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2648 | if (errno) /* error */ |
Denys Vlasenko | d55f599 | 2010-09-07 18:40:53 +0200 | [diff] [blame] | 2649 | goto return_error_indicator; |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2650 | if (ic == ic_raw) { /* "cc", "dd" */ |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2651 | input_backward(cursor); |
| 2652 | goto clear_to_eol; |
| 2653 | break; |
| 2654 | } |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2655 | |
| 2656 | sc = cursor; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2657 | switch (ic) { |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2658 | case 'w': |
| 2659 | case 'W': |
| 2660 | case 'e': |
| 2661 | case 'E': |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2662 | switch (ic) { |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2663 | case 'w': /* "dw", "cw" */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2664 | vi_word_motion(vi_cmdmode); |
Denis Vlasenko | 9275814 | 2006-10-03 19:56:34 +0000 | [diff] [blame] | 2665 | break; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2666 | case 'W': /* 'dW', 'cW' */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2667 | vi_Word_motion(vi_cmdmode); |
Denis Vlasenko | 9275814 | 2006-10-03 19:56:34 +0000 | [diff] [blame] | 2668 | break; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2669 | case 'e': /* 'de', 'ce' */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2670 | vi_end_motion(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2671 | input_forward(); |
Denis Vlasenko | 9275814 | 2006-10-03 19:56:34 +0000 | [diff] [blame] | 2672 | break; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2673 | case 'E': /* 'dE', 'cE' */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2674 | vi_End_motion(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2675 | input_forward(); |
Denis Vlasenko | 9275814 | 2006-10-03 19:56:34 +0000 | [diff] [blame] | 2676 | break; |
| 2677 | } |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2678 | nc = cursor; |
| 2679 | input_backward(cursor - sc); |
| 2680 | while (nc-- > cursor) |
| 2681 | input_delete(1); |
| 2682 | break; |
| 2683 | case 'b': /* "db", "cb" */ |
| 2684 | case 'B': /* implemented as B */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2685 | if (ic == 'b') |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2686 | vi_back_motion(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2687 | else |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2688 | vi_Back_motion(); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2689 | while (sc-- > cursor) |
| 2690 | input_delete(1); |
| 2691 | break; |
| 2692 | case ' ': /* "d ", "c " */ |
| 2693 | input_delete(1); |
| 2694 | break; |
| 2695 | case '$': /* "d$", "c$" */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2696 | clear_to_eol: |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2697 | while (cursor < command_len) |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2698 | input_delete(1); |
| 2699 | break; |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2700 | } |
| 2701 | break; |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2702 | } |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2703 | case 'p'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2704 | input_forward(); |
| 2705 | /* fallthrough */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2706 | case 'P'|VI_CMDMODE_BIT: |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2707 | put(); |
| 2708 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2709 | case 'r'|VI_CMDMODE_BIT: |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2710 | //FIXME: unicode case? |
Denys Vlasenko | 66c5b12 | 2011-02-08 05:07:02 +0100 | [diff] [blame] | 2711 | ic = lineedit_read_key(read_key_buffer, timeout); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2712 | if (errno) /* error */ |
Denys Vlasenko | d55f599 | 2010-09-07 18:40:53 +0200 | [diff] [blame] | 2713 | goto return_error_indicator; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2714 | if (ic < ' ' || ic > 255) { |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2715 | beep(); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2716 | } else { |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2717 | command_ps[cursor] = ic; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2718 | bb_putchar(ic); |
Denis Vlasenko | 4daad90 | 2007-09-27 10:20:47 +0000 | [diff] [blame] | 2719 | bb_putchar('\b'); |
Paul Fox | 3f11b1b | 2005-08-04 19:04:46 +0000 | [diff] [blame] | 2720 | } |
| 2721 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2722 | case '\x1b': /* ESC */ |
| 2723 | if (state->flags & VI_MODE) { |
| 2724 | /* insert mode --> command mode */ |
| 2725 | vi_cmdmode = 1; |
| 2726 | input_backward(1); |
| 2727 | } |
| 2728 | break; |
Denis Vlasenko | 7f1dc21 | 2006-12-19 01:10:25 +0000 | [diff] [blame] | 2729 | #endif /* FEATURE_COMMAND_EDITING_VI */ |
Paul Fox | 0f2dd9f | 2006-03-07 20:26:11 +0000 | [diff] [blame] | 2730 | |
Denis Vlasenko | 9d4533e | 2006-11-02 22:09:37 +0000 | [diff] [blame] | 2731 | #if MAX_HISTORY > 0 |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2732 | case KEYCODE_UP: |
| 2733 | if (get_previous_history()) |
| 2734 | goto rewrite_line; |
| 2735 | beep(); |
| 2736 | break; |
| 2737 | case KEYCODE_DOWN: |
| 2738 | if (!get_next_history()) |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2739 | break; |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2740 | rewrite_line: |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2741 | /* Rewrite the line with the selected history item */ |
| 2742 | /* change command */ |
Denys Vlasenko | 90a9904 | 2009-09-06 02:36:23 +0200 | [diff] [blame] | 2743 | command_len = load_string(state->history[state->cur_history] ? |
Denys Vlasenko | a669eca | 2011-07-11 07:36:59 +0200 | [diff] [blame] | 2744 | state->history[state->cur_history] : ""); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2745 | /* redraw and go to eol (bol, in vi) */ |
| 2746 | redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0); |
| 2747 | break; |
Glenn L McGrath | 062c74f | 2002-11-27 09:29:49 +0000 | [diff] [blame] | 2748 | #endif |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2749 | case KEYCODE_RIGHT: |
| 2750 | input_forward(); |
| 2751 | break; |
| 2752 | case KEYCODE_LEFT: |
| 2753 | input_backward(1); |
| 2754 | break; |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 2755 | case KEYCODE_CTRL_LEFT: |
Denys Vlasenko | 9ce09bc | 2011-11-03 13:28:22 +0100 | [diff] [blame] | 2756 | case KEYCODE_ALT_LEFT: /* bash doesn't do it */ |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 2757 | ctrl_left(); |
| 2758 | break; |
| 2759 | case KEYCODE_CTRL_RIGHT: |
Denys Vlasenko | 9ce09bc | 2011-11-03 13:28:22 +0100 | [diff] [blame] | 2760 | case KEYCODE_ALT_RIGHT: /* bash doesn't do it */ |
Denys Vlasenko | a17eeb8 | 2009-10-25 23:50:56 +0100 | [diff] [blame] | 2761 | ctrl_right(); |
| 2762 | break; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2763 | case KEYCODE_HOME: |
| 2764 | input_backward(cursor); |
| 2765 | break; |
| 2766 | case KEYCODE_END: |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2767 | put_till_end_and_adv_cursor(); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2768 | break; |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2769 | |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2770 | default: |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2771 | if (initial_settings.c_cc[VINTR] != 0 |
| 2772 | && ic_raw == initial_settings.c_cc[VINTR] |
| 2773 | ) { |
| 2774 | /* Ctrl-C (usually) - stop gathering input */ |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2775 | command_len = 0; |
| 2776 | break_out = -1; /* "do not append '\n'" */ |
| 2777 | break; |
| 2778 | } |
| 2779 | if (initial_settings.c_cc[VEOF] != 0 |
| 2780 | && ic_raw == initial_settings.c_cc[VEOF] |
| 2781 | ) { |
| 2782 | /* Ctrl-D (usually) - delete one character, |
| 2783 | * or exit if len=0 and no chars to delete */ |
| 2784 | if (command_len == 0) { |
| 2785 | errno = 0; |
Denys Vlasenko | d55f599 | 2010-09-07 18:40:53 +0200 | [diff] [blame] | 2786 | |
| 2787 | case -1: /* error (e.g. EIO when tty is destroyed) */ |
| 2788 | IF_FEATURE_EDITING_VI(return_error_indicator:) |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2789 | break_out = command_len = -1; |
| 2790 | break; |
| 2791 | } |
| 2792 | input_delete(0); |
| 2793 | break; |
| 2794 | } |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2795 | // /* Control-V -- force insert of next char */ |
| 2796 | // if (c == CTRL('V')) { |
| 2797 | // if (safe_read(STDIN_FILENO, &c, 1) < 1) |
Denys Vlasenko | d55f599 | 2010-09-07 18:40:53 +0200 | [diff] [blame] | 2798 | // goto return_error_indicator; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2799 | // if (c == 0) { |
| 2800 | // beep(); |
| 2801 | // break; |
| 2802 | // } |
| 2803 | // } |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2804 | if (ic < ' ' |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2805 | || (!ENABLE_UNICODE_SUPPORT && ic >= 256) |
| 2806 | || (ENABLE_UNICODE_SUPPORT && ic >= VI_CMDMODE_BIT) |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2807 | ) { |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2808 | /* If VI_CMDMODE_BIT is set, ic is >= 256 |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2809 | * and vi mode ignores unexpected chars. |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2810 | * Otherwise, we are here if ic is a |
| 2811 | * control char or an unhandled ESC sequence, |
| 2812 | * which is also ignored. |
| 2813 | */ |
| 2814 | break; |
| 2815 | } |
| 2816 | if ((int)command_len >= (maxsize - 2)) { |
| 2817 | /* Not enough space for the char and EOL */ |
| 2818 | break; |
Paul Fox | 84bbac5 | 2008-01-11 16:50:08 +0000 | [diff] [blame] | 2819 | } |
Denis Vlasenko | 00cdbd8 | 2007-01-21 19:21:21 +0000 | [diff] [blame] | 2820 | |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2821 | command_len++; |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2822 | if (cursor == (command_len - 1)) { |
| 2823 | /* We are at the end, append */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2824 | command_ps[cursor] = ic; |
| 2825 | command_ps[cursor + 1] = BB_NUL; |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2826 | put_cur_glyph_and_inc_cursor(); |
Tomas Heinrich | aa16755 | 2010-03-26 13:13:24 +0100 | [diff] [blame] | 2827 | if (unicode_bidi_isrtl(ic)) |
Tomas Heinrich | c5c006c | 2010-03-18 18:35:37 +0100 | [diff] [blame] | 2828 | input_backward(1); |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2829 | } else { |
| 2830 | /* In the middle, insert */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2831 | int sc = cursor; |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2832 | |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2833 | memmove(command_ps + sc + 1, command_ps + sc, |
| 2834 | (command_len - sc) * sizeof(command_ps[0])); |
| 2835 | command_ps[sc] = ic; |
Tomas Heinrich | aa16755 | 2010-03-26 13:13:24 +0100 | [diff] [blame] | 2836 | /* is right-to-left char, or neutral one (e.g. comma) was just added to rtl text? */ |
| 2837 | if (!isrtl_str()) |
| 2838 | sc++; /* no */ |
Denys Vlasenko | 94043e8 | 2010-05-11 14:49:13 +0200 | [diff] [blame] | 2839 | put_till_end_and_adv_cursor(); |
Mark Whitley | 4e33875 | 2001-01-26 20:42:23 +0000 | [diff] [blame] | 2840 | /* to prev x pos + 1 */ |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2841 | input_backward(cursor - sc); |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2842 | } |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2843 | break; |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2844 | } /* switch (ic) */ |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2845 | |
| 2846 | if (break_out) |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2847 | break; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2848 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2849 | #if ENABLE_FEATURE_TAB_COMPLETION |
Denys Vlasenko | 04bb6b6 | 2009-10-14 12:53:04 +0200 | [diff] [blame] | 2850 | if (ic_raw != '\t') |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 2851 | lastWasTab = 0; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2852 | #endif |
Denys Vlasenko | c15f40c | 2009-05-15 03:27:53 +0200 | [diff] [blame] | 2853 | } /* while (1) */ |
Erik Andersen | c7c634b | 2000-03-19 05:28:55 +0000 | [diff] [blame] | 2854 | |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2855 | #if ENABLE_FEATURE_EDITING_ASK_TERMINAL |
Denys Vlasenko | d83bbf4 | 2009-10-27 10:47:49 +0100 | [diff] [blame] | 2856 | if (S.sent_ESC_br6n) { |
Denys Vlasenko | eb62d7c | 2009-10-27 10:34:06 +0100 | [diff] [blame] | 2857 | /* "sleep 1; busybox ash" + hold [Enter] to trigger. |
| 2858 | * We sent "ESC [ 6 n", but got '\n' first, and |
| 2859 | * KEYCODE_CURSOR_POS response is now buffered from terminal. |
| 2860 | * It's bad already and not much can be done with it |
| 2861 | * (it _will_ be visible for the next process to read stdin), |
| 2862 | * but without this delay it even shows up on the screen |
| 2863 | * as garbage because we restore echo settings with tcsetattr |
| 2864 | * before it comes in. UGLY! |
| 2865 | */ |
| 2866 | usleep(20*1000); |
| 2867 | } |
| 2868 | #endif |
| 2869 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 2870 | /* End of bug-catching "command_must_not_be_used" trick */ |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2871 | #undef command |
| 2872 | |
Denys Vlasenko | 19158a8 | 2010-03-26 14:06:56 +0100 | [diff] [blame] | 2873 | #if ENABLE_UNICODE_SUPPORT |
Denys Vlasenko | 2f3f09c | 2009-09-29 00:00:12 +0200 | [diff] [blame] | 2874 | command[0] = '\0'; |
| 2875 | if (command_len > 0) |
| 2876 | command_len = save_string(command, maxsize - 1); |
Denys Vlasenko | 2e6d4ef | 2009-07-10 18:40:49 +0200 | [diff] [blame] | 2877 | free(command_ps); |
| 2878 | #endif |
| 2879 | |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 2880 | if (command_len > 0) { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2881 | remember_in_history(command); |
Flemming Madsen | d96ffda | 2013-04-07 18:47:24 +0200 | [diff] [blame] | 2882 | } |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2883 | |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2884 | if (break_out > 0) { |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2885 | command[command_len++] = '\n'; |
| 2886 | command[command_len] = '\0'; |
Eric Andersen | 044228d | 2001-07-17 01:12:36 +0000 | [diff] [blame] | 2887 | } |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2888 | |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2889 | #if ENABLE_FEATURE_TAB_COMPLETION |
Denis Vlasenko | 5592fac | 2007-01-21 19:19:46 +0000 | [diff] [blame] | 2890 | free_tab_completion_data(); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2891 | #endif |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2892 | |
Denis Vlasenko | 6258fd3 | 2007-01-22 07:30:26 +0000 | [diff] [blame] | 2893 | /* restore initial_settings */ |
Denis Vlasenko | 202ac50 | 2008-11-05 13:20:58 +0000 | [diff] [blame] | 2894 | tcsetattr_stdin_TCSANOW(&initial_settings); |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2895 | #if ENABLE_FEATURE_EDITING_WINCH |
Denis Vlasenko | 6258fd3 | 2007-01-22 07:30:26 +0000 | [diff] [blame] | 2896 | /* restore SIGWINCH handler */ |
Denys Vlasenko | bff71d3 | 2016-11-27 22:25:07 +0100 | [diff] [blame] | 2897 | sigaction_set(SIGWINCH, &S.SIGWINCH_handler); |
Ron Yorston | 2328690 | 2018-02-25 20:09:54 +0100 | [diff] [blame] | 2898 | #endif |
Denys Vlasenko | 8131eea | 2009-11-02 14:19:51 +0100 | [diff] [blame] | 2899 | fflush_all(); |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2900 | |
Denis Vlasenko | f31c3b6 | 2008-08-20 00:46:32 +0000 | [diff] [blame] | 2901 | len = command_len; |
Denis Vlasenko | 73cb1fd | 2007-11-10 01:35:47 +0000 | [diff] [blame] | 2902 | DEINIT_S(); |
| 2903 | |
Denis Vlasenko | f31c3b6 | 2008-08-20 00:46:32 +0000 | [diff] [blame] | 2904 | return len; /* can't return command_len, DEINIT_S() destroys it */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2905 | } |
| 2906 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 2907 | #else /* !FEATURE_EDITING */ |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2908 | |
| 2909 | #undef read_line_input |
Denis Vlasenko | defc1ea | 2008-06-27 02:52:20 +0000 | [diff] [blame] | 2910 | int FAST_FUNC read_line_input(const char* prompt, char* command, int maxsize) |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2911 | { |
| 2912 | fputs(prompt, stdout); |
Denys Vlasenko | 8131eea | 2009-11-02 14:19:51 +0100 | [diff] [blame] | 2913 | fflush_all(); |
Denys Vlasenko | b232037 | 2012-09-27 16:03:49 +0200 | [diff] [blame] | 2914 | if (!fgets(command, maxsize, stdin)) |
| 2915 | return -1; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2916 | return strlen(command); |
Eric Andersen | 501c88b | 2000-07-28 15:14:45 +0000 | [diff] [blame] | 2917 | } |
| 2918 | |
Denys Vlasenko | b9e35dc | 2010-07-18 22:21:24 +0200 | [diff] [blame] | 2919 | #endif /* !FEATURE_EDITING */ |
Eric Andersen | 501c88b | 2000-07-28 15:14:45 +0000 | [diff] [blame] | 2920 | |
| 2921 | |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2922 | /* |
| 2923 | * Testing |
| 2924 | */ |
| 2925 | |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2926 | #ifdef TEST |
| 2927 | |
Eric Andersen | f9ff8a7 | 2001-03-15 20:51:09 +0000 | [diff] [blame] | 2928 | #include <locale.h> |
Denis Vlasenko | 82b39e8 | 2007-01-21 19:18:19 +0000 | [diff] [blame] | 2929 | |
| 2930 | const char *applet_name = "debug stuff usage"; |
Eric Andersen | f9ff8a7 | 2001-03-15 20:51:09 +0000 | [diff] [blame] | 2931 | |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2932 | int main(int argc, char **argv) |
| 2933 | { |
Denis Vlasenko | e8a0788 | 2007-06-10 15:08:44 +0000 | [diff] [blame] | 2934 | char buff[MAX_LINELEN]; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2935 | char *prompt = |
Denis Vlasenko | 38f6319 | 2007-01-22 09:03:07 +0000 | [diff] [blame] | 2936 | #if ENABLE_FEATURE_EDITING_FANCY_PROMPT |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2937 | "\\[\\033[32;1m\\]\\u@\\[\\x1b[33;1m\\]\\h:" |
| 2938 | "\\[\\033[34;1m\\]\\w\\[\\033[35;1m\\] " |
Denys Vlasenko | 8187e01 | 2017-09-13 22:48:30 +0200 | [diff] [blame] | 2939 | "\\!\\[\\e[36;1m\\]\\$ \\[\\E[m\\]"; |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2940 | #else |
| 2941 | "% "; |
| 2942 | #endif |
| 2943 | |
Denis Vlasenko | 7f1dc21 | 2006-12-19 01:10:25 +0000 | [diff] [blame] | 2944 | while (1) { |
Eric Andersen | b3d6e2d | 2001-03-13 22:57:56 +0000 | [diff] [blame] | 2945 | int l; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2946 | l = read_line_input(prompt, buff); |
Denis Vlasenko | 0a8a774 | 2006-12-21 22:27:10 +0000 | [diff] [blame] | 2947 | if (l <= 0 || buff[l-1] != '\n') |
Eric Andersen | 27bb790 | 2003-12-23 20:24:51 +0000 | [diff] [blame] | 2948 | break; |
Denys Vlasenko | 57ea9b4 | 2010-09-03 12:51:36 +0200 | [diff] [blame] | 2949 | buff[l-1] = '\0'; |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2950 | printf("*** read_line_input() returned line =%s=\n", buff); |
Eric Andersen | 7467c8d | 2001-07-12 20:26:32 +0000 | [diff] [blame] | 2951 | } |
Denis Vlasenko | 8e1c715 | 2007-01-22 07:21:38 +0000 | [diff] [blame] | 2952 | printf("*** read_line_input() detect ^D\n"); |
Eric Andersen | 5f2c79d | 2001-02-16 18:36:04 +0000 | [diff] [blame] | 2953 | return 0; |
| 2954 | } |
| 2955 | |
Eric Andersen | c470f44 | 2003-07-28 09:56:35 +0000 | [diff] [blame] | 2956 | #endif /* TEST */ |