Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 2 | /* |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 3 | * Mini grep implementation for busybox using libc regex. |
Eric Andersen | c499601 | 1999-10-20 22:08:37 +0000 | [diff] [blame] | 4 | * |
Eric Andersen | bdfd0d7 | 2001-10-24 05:00:29 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999,2000,2001 by Lineo, inc. and Mark Whitley |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 6 | * Copyright (C) 1999,2000,2001 by Mark Whitley <markw@codepoet.org> |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 7 | * |
Bernhard Reutner-Fischer | 7fee0c4 | 2006-09-13 16:39:19 +0000 | [diff] [blame] | 8 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball. |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 9 | */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 10 | /* BB_AUDIT SUSv3 defects - unsupported option -x "match whole line only". */ |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 11 | /* BB_AUDIT GNU defects - always acts as -a. */ |
| 12 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/grep.html */ |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 13 | /* |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 14 | * 2004,2006 (C) Vladimir Oleynik <dzo@simtreas.ru> - |
Eric Andersen | 7f164cd | 2004-05-26 09:46:41 +0000 | [diff] [blame] | 15 | * correction "-e pattern1 -e pattern2" logic and more optimizations. |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 16 | * precompiled regex |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 17 | */ |
| 18 | /* |
| 19 | * (C) 2006 Jac Goudsmit added -o option |
| 20 | */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 21 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 22 | #include "libbb.h" |
"Vladimir N. Oleynik" | 23f62fc | 2005-09-14 16:59:11 +0000 | [diff] [blame] | 23 | #include "xregex.h" |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 24 | |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 25 | /* options */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 26 | #define OPTSTR_GREP \ |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 27 | "lnqvscFiHhe:f:Lorm:" \ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 28 | USE_FEATURE_GREP_CONTEXT("A:B:C:") \ |
| 29 | USE_FEATURE_GREP_EGREP_ALIAS("E") \ |
| 30 | USE_DESKTOP("w") \ |
Denis Vlasenko | f8ea0f3 | 2007-02-25 02:38:54 +0000 | [diff] [blame] | 31 | "aI" |
| 32 | /* ignored: -a "assume all files to be text" */ |
| 33 | /* ignored: -I "assume binary files have no matches" */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 34 | |
| 35 | enum { |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 36 | OPTBIT_l, /* list matched file names only */ |
| 37 | OPTBIT_n, /* print line# */ |
| 38 | OPTBIT_q, /* quiet - exit(0) of first match */ |
| 39 | OPTBIT_v, /* invert the match, to select non-matching lines */ |
| 40 | OPTBIT_s, /* suppress errors about file open errors */ |
| 41 | OPTBIT_c, /* count matches per file (suppresses normal output) */ |
| 42 | OPTBIT_F, /* literal match */ |
| 43 | OPTBIT_i, /* case-insensitive */ |
| 44 | OPTBIT_H, /* force filename display */ |
| 45 | OPTBIT_h, /* inhibit filename display */ |
| 46 | OPTBIT_e, /* -e PATTERN */ |
| 47 | OPTBIT_f, /* -f FILE_WITH_PATTERNS */ |
| 48 | OPTBIT_L, /* list unmatched file names only */ |
| 49 | OPTBIT_o, /* show only matching parts of lines */ |
| 50 | OPTBIT_r, /* recurse dirs */ |
| 51 | OPTBIT_m, /* -m MAX_MATCHES */ |
| 52 | USE_FEATURE_GREP_CONTEXT( OPTBIT_A ,) /* -A NUM: after-match context */ |
| 53 | USE_FEATURE_GREP_CONTEXT( OPTBIT_B ,) /* -B NUM: before-match context */ |
| 54 | USE_FEATURE_GREP_CONTEXT( OPTBIT_C ,) /* -C NUM: -A and -B combined */ |
| 55 | USE_FEATURE_GREP_EGREP_ALIAS(OPTBIT_E ,) /* extended regexp */ |
| 56 | USE_DESKTOP( OPTBIT_w ,) /* whole word match */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 57 | OPT_l = 1 << OPTBIT_l, |
| 58 | OPT_n = 1 << OPTBIT_n, |
| 59 | OPT_q = 1 << OPTBIT_q, |
| 60 | OPT_v = 1 << OPTBIT_v, |
| 61 | OPT_s = 1 << OPTBIT_s, |
| 62 | OPT_c = 1 << OPTBIT_c, |
| 63 | OPT_F = 1 << OPTBIT_F, |
| 64 | OPT_i = 1 << OPTBIT_i, |
| 65 | OPT_H = 1 << OPTBIT_H, |
| 66 | OPT_h = 1 << OPTBIT_h, |
| 67 | OPT_e = 1 << OPTBIT_e, |
| 68 | OPT_f = 1 << OPTBIT_f, |
| 69 | OPT_L = 1 << OPTBIT_L, |
| 70 | OPT_o = 1 << OPTBIT_o, |
| 71 | OPT_r = 1 << OPTBIT_r, |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 72 | OPT_m = 1 << OPTBIT_m, |
Denis Vlasenko | 9acfed2 | 2007-06-08 15:41:27 +0000 | [diff] [blame] | 73 | OPT_A = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_A)) + 0, |
| 74 | OPT_B = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_B)) + 0, |
| 75 | OPT_C = USE_FEATURE_GREP_CONTEXT( (1 << OPTBIT_C)) + 0, |
| 76 | OPT_E = USE_FEATURE_GREP_EGREP_ALIAS((1 << OPTBIT_E)) + 0, |
| 77 | OPT_w = USE_DESKTOP( (1 << OPTBIT_w)) + 0, |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 78 | }; |
| 79 | |
Denis Vlasenko | 9acfed2 | 2007-06-08 15:41:27 +0000 | [diff] [blame] | 80 | #define PRINT_FILES_WITH_MATCHES (option_mask32 & OPT_l) |
| 81 | #define PRINT_LINE_NUM (option_mask32 & OPT_n) |
| 82 | #define BE_QUIET (option_mask32 & OPT_q) |
| 83 | #define SUPPRESS_ERR_MSGS (option_mask32 & OPT_s) |
| 84 | #define PRINT_MATCH_COUNTS (option_mask32 & OPT_c) |
| 85 | #define FGREP_FLAG (option_mask32 & OPT_F) |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 86 | #define PRINT_FILES_WITHOUT_MATCHES (option_mask32 & OPT_L) |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 87 | |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 88 | struct globals { |
| 89 | int max_matches; |
| 90 | int reflags; |
| 91 | smalluint invert_search; |
| 92 | smalluint print_filename; |
| 93 | smalluint open_errors; |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 94 | #if ENABLE_FEATURE_GREP_CONTEXT |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 95 | smalluint did_print_line; |
| 96 | int lines_before; |
| 97 | int lines_after; |
| 98 | char **before_buf; |
| 99 | int last_line_printed; |
| 100 | #endif |
| 101 | /* globals used internally */ |
| 102 | llist_t *pattern_head; /* growable list of patterns to match */ |
| 103 | const char *cur_file; /* the current file we are reading */ |
| 104 | }; |
| 105 | #define G (*(struct globals*)&bb_common_bufsiz1) |
| 106 | #define INIT_G() \ |
| 107 | do { \ |
| 108 | struct G_sizecheck { \ |
| 109 | char G_sizecheck[sizeof(G) > COMMON_BUFSIZE ? -1 : 1]; \ |
| 110 | }; \ |
| 111 | } while (0) |
| 112 | #define max_matches (G.max_matches ) |
| 113 | #define reflags (G.reflags ) |
| 114 | #define invert_search (G.invert_search ) |
| 115 | #define print_filename (G.print_filename ) |
| 116 | #define open_errors (G.open_errors ) |
| 117 | #define did_print_line (G.did_print_line ) |
| 118 | #define lines_before (G.lines_before ) |
| 119 | #define lines_after (G.lines_after ) |
| 120 | #define before_buf (G.before_buf ) |
| 121 | #define last_line_printed (G.last_line_printed ) |
| 122 | #define pattern_head (G.pattern_head ) |
| 123 | #define cur_file (G.cur_file ) |
| 124 | |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 125 | |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 126 | typedef struct grep_list_data_t { |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 127 | char *pattern; |
| 128 | regex_t preg; |
| 129 | #define PATTERN_MEM_A 1 |
| 130 | #define COMPILED 2 |
| 131 | int flg_mem_alocated_compiled; |
| 132 | } grep_list_data_t; |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 133 | |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 134 | |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 135 | static void print_line(const char *line, int linenum, char decoration) |
| 136 | { |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 137 | #if ENABLE_FEATURE_GREP_CONTEXT |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 138 | /* Happens when we go to next file, immediately hit match |
| 139 | * and try to print prev context... from prev file! Don't do it */ |
| 140 | if (linenum < 1) |
| 141 | return; |
Eric Andersen | aff114c | 2004-04-14 17:51:38 +0000 | [diff] [blame] | 142 | /* possibly print the little '--' separator */ |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 143 | if ((lines_before || lines_after) && did_print_line && |
| 144 | last_line_printed != linenum - 1) { |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 145 | puts("--"); |
| 146 | } |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 147 | /* guard against printing "--" before first line of first file */ |
| 148 | did_print_line = 1; |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 149 | last_line_printed = linenum; |
| 150 | #endif |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 151 | if (print_filename) |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 152 | printf("%s%c", cur_file, decoration); |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 153 | if (PRINT_LINE_NUM) |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 154 | printf("%i%c", linenum, decoration); |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 155 | /* Emulate weird GNU grep behavior with -ov */ |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 156 | if ((option_mask32 & (OPT_v|OPT_o)) != (OPT_v|OPT_o)) |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 157 | puts(line); |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 158 | } |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 159 | |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 160 | static int grep_file(FILE *file) |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 161 | { |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 162 | char *line; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 163 | smalluint found; |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 164 | int linenum = 0; |
Matt Kraai | deb95f6 | 2000-08-06 15:25:53 +0000 | [diff] [blame] | 165 | int nmatches = 0; |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 166 | regmatch_t regmatch; |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 167 | #if ENABLE_FEATURE_GREP_CONTEXT |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 168 | int print_n_lines_after = 0; |
| 169 | int curpos = 0; /* track where we are in the circular 'before' buffer */ |
| 170 | int idx = 0; /* used for iteration through the circular buffer */ |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 171 | #else |
| 172 | enum { print_n_lines_after = 0 }; |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 173 | #endif /* ENABLE_FEATURE_GREP_CONTEXT */ |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 174 | |
Denis Vlasenko | 8ee649a | 2008-03-26 20:04:27 +0000 | [diff] [blame^] | 175 | while ((line = xmalloc_fgetline(file)) != NULL) { |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 176 | llist_t *pattern_ptr = pattern_head; |
Denis Vlasenko | 6810236 | 2007-11-04 00:46:03 +0000 | [diff] [blame] | 177 | grep_list_data_t *gl = gl; /* for gcc */ |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 178 | |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 179 | linenum++; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 180 | found = 0; |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 181 | while (pattern_ptr) { |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 182 | gl = (grep_list_data_t *)pattern_ptr->data; |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 183 | if (FGREP_FLAG) { |
Denis Vlasenko | ac074b3 | 2007-09-10 12:23:27 +0000 | [diff] [blame] | 184 | found |= (strstr(line, gl->pattern) != NULL); |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 185 | } else { |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 186 | if (!(gl->flg_mem_alocated_compiled & COMPILED)) { |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 187 | gl->flg_mem_alocated_compiled |= COMPILED; |
| 188 | xregcomp(&(gl->preg), gl->pattern, reflags); |
| 189 | } |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 190 | regmatch.rm_so = 0; |
| 191 | regmatch.rm_eo = 0; |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 192 | if (regexec(&(gl->preg), line, 1, ®match, 0) == 0) { |
| 193 | if (!(option_mask32 & OPT_w)) |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 194 | found = 1; |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 195 | else { |
| 196 | char c = ' '; |
| 197 | if (regmatch.rm_so) |
| 198 | c = line[regmatch.rm_so - 1]; |
| 199 | if (!isalnum(c) && c != '_') { |
| 200 | c = line[regmatch.rm_eo]; |
| 201 | if (!c || (!isalnum(c) && c != '_')) |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 202 | found = 1; |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 203 | } |
| 204 | } |
| 205 | } |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 206 | } |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 207 | /* If it's non-inverted search, we can stop |
| 208 | * at first match */ |
| 209 | if (found && !invert_search) |
| 210 | goto do_found; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 211 | pattern_ptr = pattern_ptr->link; |
| 212 | } /* while (pattern_ptr) */ |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 213 | |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 214 | if (found ^ invert_search) { |
| 215 | do_found: |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 216 | /* keep track of matches */ |
| 217 | nmatches++; |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 218 | |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 219 | /* quiet/print (non)matching file names only? */ |
| 220 | if (option_mask32 & (OPT_q|OPT_l|OPT_L)) { |
| 221 | free(line); /* we don't need line anymore */ |
| 222 | if (BE_QUIET) { |
| 223 | /* manpage says about -q: |
| 224 | * "exit immediately with zero status |
| 225 | * if any match is found, |
| 226 | * even if errors were detected" */ |
| 227 | exit(0); |
| 228 | } |
| 229 | /* if we're just printing filenames, we stop after the first match */ |
| 230 | if (PRINT_FILES_WITH_MATCHES) { |
| 231 | puts(cur_file); |
Bernhard Reutner-Fischer | a985d30 | 2008-02-11 11:44:38 +0000 | [diff] [blame] | 232 | /* fall through to "return 1" */ |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 233 | } |
| 234 | /* OPT_L aka PRINT_FILES_WITHOUT_MATCHES: return early */ |
| 235 | return 1; /* one match */ |
| 236 | } |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 237 | |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 238 | #if ENABLE_FEATURE_GREP_CONTEXT |
| 239 | /* Were we printing context and saw next (unwanted) match? */ |
| 240 | if ((option_mask32 & OPT_m) && nmatches > max_matches) |
| 241 | break; |
| 242 | #endif |
| 243 | |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 244 | /* print the matched line */ |
| 245 | if (PRINT_MATCH_COUNTS == 0) { |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 246 | #if ENABLE_FEATURE_GREP_CONTEXT |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 247 | int prevpos = (curpos == 0) ? lines_before - 1 : curpos - 1; |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 248 | |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 249 | /* if we were told to print 'before' lines and there is at least |
| 250 | * one line in the circular buffer, print them */ |
| 251 | if (lines_before && before_buf[prevpos] != NULL) { |
| 252 | int first_buf_entry_line_num = linenum - lines_before; |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 253 | |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 254 | /* advance to the first entry in the circular buffer, and |
| 255 | * figure out the line number is of the first line in the |
| 256 | * buffer */ |
| 257 | idx = curpos; |
| 258 | while (before_buf[idx] == NULL) { |
| 259 | idx = (idx + 1) % lines_before; |
| 260 | first_buf_entry_line_num++; |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 261 | } |
| 262 | |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 263 | /* now print each line in the buffer, clearing them as we go */ |
| 264 | while (before_buf[idx] != NULL) { |
| 265 | print_line(before_buf[idx], first_buf_entry_line_num, '-'); |
| 266 | free(before_buf[idx]); |
| 267 | before_buf[idx] = NULL; |
| 268 | idx = (idx + 1) % lines_before; |
| 269 | first_buf_entry_line_num++; |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | /* make a note that we need to print 'after' lines */ |
| 274 | print_n_lines_after = lines_after; |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 275 | #endif |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 276 | if (option_mask32 & OPT_o) { |
Denis Vlasenko | 6810236 | 2007-11-04 00:46:03 +0000 | [diff] [blame] | 277 | if (FGREP_FLAG) { |
| 278 | /* -Fo just prints the pattern |
| 279 | * (unless -v: -Fov doesnt print anything at all) */ |
| 280 | if (found) |
| 281 | print_line(gl->pattern, linenum, ':'); |
| 282 | } else { |
| 283 | line[regmatch.rm_eo] = '\0'; |
| 284 | print_line(line + regmatch.rm_so, linenum, ':'); |
| 285 | } |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 286 | } else { |
| 287 | print_line(line, linenum, ':'); |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 288 | } |
Matt Kraai | 0810f72 | 2001-01-04 15:11:52 +0000 | [diff] [blame] | 289 | } |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 290 | } |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 291 | #if ENABLE_FEATURE_GREP_CONTEXT |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 292 | else { /* no match */ |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 293 | /* if we need to print some context lines after the last match, do so */ |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 294 | if (print_n_lines_after) { |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 295 | print_line(line, linenum, '-'); |
| 296 | print_n_lines_after--; |
| 297 | } else if (lines_before) { |
| 298 | /* Add the line to the circular 'before' buffer */ |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 299 | free(before_buf[curpos]); |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 300 | before_buf[curpos] = line; |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 301 | curpos = (curpos + 1) % lines_before; |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 302 | /* avoid free(line) - we took the line */ |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 303 | line = NULL; |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 304 | } |
Denis Vlasenko | 4222ae4 | 2007-02-25 02:37:49 +0000 | [diff] [blame] | 305 | } |
Mark Whitley | 2fd5298 | 2001-02-09 00:41:10 +0000 | [diff] [blame] | 306 | |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 307 | #endif /* ENABLE_FEATURE_GREP_CONTEXT */ |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 308 | free(line); |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 309 | |
| 310 | /* Did we print all context after last requested match? */ |
| 311 | if ((option_mask32 & OPT_m) |
| 312 | && !print_n_lines_after && nmatches == max_matches) |
| 313 | break; |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 314 | } |
Mark Whitley | 8f12243 | 2000-07-18 18:37:01 +0000 | [diff] [blame] | 315 | |
Mark Whitley | 35e59be | 2001-05-14 19:40:32 +0000 | [diff] [blame] | 316 | /* special-case file post-processing for options where we don't print line |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 317 | * matches, just filenames and possibly match counts */ |
Mark Whitley | 35e59be | 2001-05-14 19:40:32 +0000 | [diff] [blame] | 318 | |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 319 | /* grep -c: print [filename:]count, even if count is zero */ |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 320 | if (PRINT_MATCH_COUNTS) { |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 321 | if (print_filename) |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 322 | printf("%s:", cur_file); |
Denis Vlasenko | 9275814 | 2006-10-03 19:56:34 +0000 | [diff] [blame] | 323 | printf("%d\n", nmatches); |
Mark Whitley | 35e59be | 2001-05-14 19:40:32 +0000 | [diff] [blame] | 324 | } |
Mark Whitley | 1d9d411 | 2001-05-21 21:13:00 +0000 | [diff] [blame] | 325 | |
Denis Vlasenko | 8d5aa87 | 2007-07-15 12:38:18 +0000 | [diff] [blame] | 326 | /* grep -L: print just the filename */ |
| 327 | if (PRINT_FILES_WITHOUT_MATCHES) { |
| 328 | /* nmatches is zero, no need to check it: |
| 329 | * we return 1 early if we detected a match |
| 330 | * and PRINT_FILES_WITHOUT_MATCHES is set */ |
Eric Andersen | dec7f81 | 2004-05-26 11:47:55 +0000 | [diff] [blame] | 331 | puts(cur_file); |
| 332 | } |
| 333 | |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 334 | return nmatches; |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 335 | } |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 336 | |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 337 | #if ENABLE_FEATURE_CLEAN_UP |
| 338 | #define new_grep_list_data(p, m) add_grep_list_data(p, m) |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 339 | static char *add_grep_list_data(char *pattern, int flg_used_mem) |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 340 | #else |
| 341 | #define new_grep_list_data(p, m) add_grep_list_data(p) |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 342 | static char *add_grep_list_data(char *pattern) |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 343 | #endif |
| 344 | { |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 345 | grep_list_data_t *gl = xzalloc(sizeof(*gl)); |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 346 | gl->pattern = pattern; |
| 347 | #if ENABLE_FEATURE_CLEAN_UP |
| 348 | gl->flg_mem_alocated_compiled = flg_used_mem; |
| 349 | #else |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 350 | /*gl->flg_mem_alocated_compiled = 0;*/ |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 351 | #endif |
| 352 | return (char *)gl; |
| 353 | } |
| 354 | |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 355 | static void load_regexes_from_file(llist_t *fopt) |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 356 | { |
| 357 | char *line; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 358 | FILE *f; |
| 359 | |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 360 | while (fopt) { |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 361 | llist_t *cur = fopt; |
| 362 | char *ffile = cur->data; |
| 363 | |
| 364 | fopt = cur->link; |
| 365 | free(cur); |
Rob Landley | d921b2e | 2006-08-03 15:41:12 +0000 | [diff] [blame] | 366 | f = xfopen(ffile, "r"); |
Denis Vlasenko | 8ee649a | 2008-03-26 20:04:27 +0000 | [diff] [blame^] | 367 | while ((line = xmalloc_fgetline(f)) != NULL) { |
Rob Landley | 8bb5078 | 2006-05-26 23:44:51 +0000 | [diff] [blame] | 368 | llist_add_to(&pattern_head, |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 369 | new_grep_list_data(line, PATTERN_MEM_A)); |
Eric Andersen | 31c27a9 | 2004-10-08 08:10:57 +0000 | [diff] [blame] | 370 | } |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 371 | } |
| 372 | } |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 373 | |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 374 | static int file_action_grep(const char *filename, |
| 375 | struct stat *statbuf ATTRIBUTE_UNUSED, |
| 376 | void* matched, |
| 377 | int depth ATTRIBUTE_UNUSED) |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 378 | { |
| 379 | FILE *file = fopen(filename, "r"); |
| 380 | if (file == NULL) { |
| 381 | if (!SUPPRESS_ERR_MSGS) |
Denis Vlasenko | 8e8200a | 2008-01-24 01:30:36 +0000 | [diff] [blame] | 382 | bb_simple_perror_msg(filename); |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 383 | open_errors = 1; |
| 384 | return 0; |
| 385 | } |
| 386 | cur_file = filename; |
| 387 | *(int*)matched += grep_file(file); |
Denis Vlasenko | bf39216 | 2006-10-15 18:38:01 +0000 | [diff] [blame] | 388 | fclose(file); |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 389 | return 1; |
| 390 | } |
| 391 | |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 392 | static int grep_dir(const char *dir) |
| 393 | { |
| 394 | int matched = 0; |
| 395 | recursive_action(dir, |
Denis Vlasenko | bbd695d | 2007-04-08 10:52:28 +0000 | [diff] [blame] | 396 | /* recurse=yes */ ACTION_RECURSE | |
| 397 | /* followLinks=no */ |
| 398 | /* depthFirst=yes */ ACTION_DEPTHFIRST, |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 399 | /* fileAction= */ file_action_grep, |
| 400 | /* dirAction= */ NULL, |
Denis Vlasenko | 8c35d65 | 2006-10-27 23:42:25 +0000 | [diff] [blame] | 401 | /* userData= */ &matched, |
| 402 | /* depth= */ 0); |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 403 | return matched; |
| 404 | } |
| 405 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 406 | int grep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Rob Landley | dfba741 | 2006-03-06 20:47:33 +0000 | [diff] [blame] | 407 | int grep_main(int argc, char **argv) |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 408 | { |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 409 | FILE *file; |
| 410 | int matched; |
Eric Andersen | 31c27a9 | 2004-10-08 08:10:57 +0000 | [diff] [blame] | 411 | llist_t *fopt = NULL; |
Matt Kraai | 999623e | 2001-10-29 15:49:03 +0000 | [diff] [blame] | 412 | |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 413 | /* do normal option parsing */ |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 414 | #if ENABLE_FEATURE_GREP_CONTEXT |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 415 | int Copt; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 416 | |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 417 | /* -H unsets -h; -C unsets -A,-B; -e,-f are lists; |
| 418 | * -m,-A,-B,-C have numeric param */ |
| 419 | opt_complementary = "H-h:C-AB:e::f::m+:A+:B+:C+"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 420 | getopt32(argv, |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 421 | OPTSTR_GREP, |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 422 | &pattern_head, &fopt, &max_matches, |
| 423 | &lines_after, &lines_before, &Copt); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 424 | |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 425 | if (option_mask32 & OPT_C) { |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 426 | /* -C unsets prev -A and -B, but following -A or -B |
| 427 | may override it */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 428 | if (!(option_mask32 & OPT_A)) /* not overridden */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 429 | lines_after = Copt; |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 430 | if (!(option_mask32 & OPT_B)) /* not overridden */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 431 | lines_before = Copt; |
| 432 | //option_mask32 |= OPT_A|OPT_B; /* for parser */ |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 433 | } |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 434 | /* sanity checks */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 435 | if (option_mask32 & (OPT_c|OPT_q|OPT_l|OPT_L)) { |
| 436 | option_mask32 &= ~OPT_n; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 437 | lines_before = 0; |
| 438 | lines_after = 0; |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 439 | } else if (lines_before > 0) |
Denis Vlasenko | 4cccc03 | 2006-12-22 18:37:07 +0000 | [diff] [blame] | 440 | before_buf = xzalloc(lines_before * sizeof(char *)); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 441 | #else |
| 442 | /* with auto sanity checks */ |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 443 | /* -H unsets -h; -c,-q or -l unset -n; -e,-f are lists; -m N */ |
| 444 | opt_complementary = "H-h:c-n:q-n:l-n:e::f::m+"; |
Denis Vlasenko | fe7cd64 | 2007-08-18 15:32:12 +0000 | [diff] [blame] | 445 | getopt32(argv, OPTSTR_GREP, |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 446 | &pattern_head, &fopt, &max_matches); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 447 | #endif |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 448 | invert_search = ((option_mask32 & OPT_v) != 0); /* 0 | 1 */ |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 449 | |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 450 | if (pattern_head != NULL) { |
Bernhard Reutner-Fischer | febe3c4 | 2007-04-04 20:52:03 +0000 | [diff] [blame] | 451 | /* convert char **argv to grep_list_data_t */ |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 452 | llist_t *cur; |
| 453 | |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 454 | for (cur = pattern_head; cur; cur = cur->link) |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 455 | cur->data = new_grep_list_data(cur->data, 0); |
| 456 | } |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 457 | if (option_mask32 & OPT_f) |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 458 | load_regexes_from_file(fopt); |
| 459 | |
Denis Vlasenko | 8f8f268 | 2006-10-03 21:00:43 +0000 | [diff] [blame] | 460 | if (ENABLE_FEATURE_GREP_FGREP_ALIAS && applet_name[0] == 'f') |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 461 | option_mask32 |= OPT_F; |
Mike Frysinger | 15ca586 | 2005-07-31 22:41:05 +0000 | [diff] [blame] | 462 | |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 463 | if (!(option_mask32 & (OPT_o | OPT_w))) |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 464 | reflags = REG_NOSUB; |
| 465 | |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 466 | if (ENABLE_FEATURE_GREP_EGREP_ALIAS |
| 467 | && (applet_name[0] == 'e' || (option_mask32 & OPT_E)) |
| 468 | ) { |
Denis Vlasenko | 5193753 | 2006-09-29 20:58:53 +0000 | [diff] [blame] | 469 | reflags |= REG_EXTENDED; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 470 | } |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 471 | |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 472 | if (option_mask32 & OPT_i) |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 473 | reflags |= REG_ICASE; |
| 474 | |
| 475 | argv += optind; |
| 476 | argc -= optind; |
Eric Andersen | 053b146 | 2000-06-13 06:24:53 +0000 | [diff] [blame] | 477 | |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 478 | /* if we didn't get a pattern from -e and no command file was specified, |
| 479 | * first parameter should be the pattern. no pattern, no worky */ |
Glenn L McGrath | 26df70a | 2003-04-27 01:50:57 +0000 | [diff] [blame] | 480 | if (pattern_head == NULL) { |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 481 | char *pattern; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 482 | if (*argv == NULL) |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 483 | bb_show_usage(); |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 484 | pattern = new_grep_list_data(*argv++, 0); |
| 485 | llist_add_to(&pattern_head, pattern); |
| 486 | argc--; |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 487 | } |
Mark Whitley | d372189 | 2000-06-28 22:00:26 +0000 | [diff] [blame] | 488 | |
Mark Whitley | fa43e54 | 2001-05-24 18:36:18 +0000 | [diff] [blame] | 489 | /* argv[(optind)..(argc-1)] should be names of file to grep through. If |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 490 | * there is more than one file to grep, we will print the filenames. */ |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 491 | if (argc > 1) |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 492 | print_filename = 1; |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 493 | /* -H / -h of course override */ |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 494 | if (option_mask32 & OPT_H) |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 495 | print_filename = 1; |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 496 | if (option_mask32 & OPT_h) |
Denis Vlasenko | 2295b49 | 2006-10-22 11:42:51 +0000 | [diff] [blame] | 497 | print_filename = 0; |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 498 | |
Mark Whitley | 2e1148b | 2000-06-28 22:59:30 +0000 | [diff] [blame] | 499 | /* If no files were specified, or '-' was specified, take input from |
| 500 | * stdin. Otherwise, we grep through all the files specified. */ |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 501 | matched = 0; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 502 | do { |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 503 | cur_file = *argv++; |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 504 | file = stdin; |
Denis Vlasenko | 1d42665 | 2008-03-17 09:09:09 +0000 | [diff] [blame] | 505 | if (!cur_file || LONE_DASH(cur_file)) { |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 506 | cur_file = "(standard input)"; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 507 | } else { |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 508 | if (option_mask32 & OPT_r) { |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 509 | struct stat st; |
| 510 | if (stat(cur_file, &st) == 0 && S_ISDIR(st.st_mode)) { |
Denis Vlasenko | 385304d | 2007-02-25 02:38:20 +0000 | [diff] [blame] | 511 | if (!(option_mask32 & OPT_h)) |
Denis Vlasenko | 3544ae6 | 2006-10-14 14:51:59 +0000 | [diff] [blame] | 512 | print_filename = 1; |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 513 | matched += grep_dir(cur_file); |
| 514 | goto grep_done; |
| 515 | } |
Mark Whitley | 2ef880b | 2000-07-18 21:02:06 +0000 | [diff] [blame] | 516 | } |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 517 | /* else: fopen(dir) will succeed, but reading won't */ |
| 518 | file = fopen(cur_file, "r"); |
| 519 | if (file == NULL) { |
| 520 | if (!SUPPRESS_ERR_MSGS) |
Denis Vlasenko | 0c97c9d | 2007-10-01 11:58:38 +0000 | [diff] [blame] | 521 | bb_simple_perror_msg(cur_file); |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 522 | open_errors = 1; |
| 523 | continue; |
| 524 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 525 | } |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 526 | matched += grep_file(file); |
Denis Vlasenko | ddec5af | 2006-10-26 23:25:17 +0000 | [diff] [blame] | 527 | fclose_if_not_stdin(file); |
Denis Vlasenko | 4652daa | 2007-07-15 12:39:08 +0000 | [diff] [blame] | 528 | grep_done: ; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 529 | } while (--argc > 0); |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 530 | |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 531 | /* destroy all the elments in the pattern list */ |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 532 | if (ENABLE_FEATURE_CLEAN_UP) { |
| 533 | while (pattern_head) { |
| 534 | llist_t *pattern_head_ptr = pattern_head; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 535 | grep_list_data_t *gl = (grep_list_data_t *)pattern_head_ptr->data; |
Eric Andersen | 8876fb2 | 2003-06-20 09:01:58 +0000 | [diff] [blame] | 536 | |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 537 | pattern_head = pattern_head->link; |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 538 | if ((gl->flg_mem_alocated_compiled & PATTERN_MEM_A)) |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 539 | free(gl->pattern); |
Denis Vlasenko | 6c30db8 | 2006-09-29 21:04:12 +0000 | [diff] [blame] | 540 | if ((gl->flg_mem_alocated_compiled & COMPILED)) |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 541 | regfree(&(gl->preg)); |
Mike Frysinger | 3a62a73 | 2007-04-12 18:29:27 +0000 | [diff] [blame] | 542 | free(gl); |
"Vladimir N. Oleynik" | 716bbe9 | 2006-02-28 10:10:19 +0000 | [diff] [blame] | 543 | free(pattern_head_ptr); |
| 544 | } |
Erik Andersen | e49d5ec | 2000-02-08 19:58:47 +0000 | [diff] [blame] | 545 | } |
Bernhard Reutner-Fischer | aaf0e23 | 2005-09-23 15:38:49 +0000 | [diff] [blame] | 546 | /* 0 = success, 1 = failed, 2 = error */ |
Denis Vlasenko | 3a6755f | 2006-10-14 14:24:30 +0000 | [diff] [blame] | 547 | if (open_errors) |
"Vladimir N. Oleynik" | bf44974 | 2005-09-23 13:50:24 +0000 | [diff] [blame] | 548 | return 2; |
Denis Vlasenko | 04ea11b | 2007-09-10 12:18:32 +0000 | [diff] [blame] | 549 | return !matched; /* invert return value: 0 = success, 1 = failed */ |
Eric Andersen | cc8ed39 | 1999-10-05 16:24:54 +0000 | [diff] [blame] | 550 | } |