Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 1 | /* vi: set sw=4 ts=4: */ |
| 2 | /* |
| 3 | * Mini basename implementation for busybox |
| 4 | * |
Eric Andersen | c7bda1c | 2004-03-15 08:29:22 +0000 | [diff] [blame] | 5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 6 | * |
Denys Vlasenko | 0ef64bd | 2010-08-16 20:14:46 +0200 | [diff] [blame] | 7 | * Licensed under GPLv2 or later, see file LICENSE in this source tree. |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 8 | */ |
| 9 | |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 10 | /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
| 11 | * |
| 12 | * Changes: |
| 13 | * 1) Now checks for too many args. Need at least one and at most two. |
| 14 | * 2) Don't check for options, as per SUSv3. |
| 15 | * 3) Save some space by using strcmp(). Calling strncmp() here was silly. |
| 16 | */ |
Denys Vlasenko | e4070cb | 2010-06-04 19:59:49 +0200 | [diff] [blame] | 17 | //config:config BASENAME |
| 18 | //config: bool "basename" |
Denys Vlasenko | 2f32bf8 | 2010-06-06 04:14:28 +0200 | [diff] [blame] | 19 | //config: default y |
Denys Vlasenko | e4070cb | 2010-06-04 19:59:49 +0200 | [diff] [blame] | 20 | //config: help |
| 21 | //config: basename is used to strip the directory and suffix from filenames, |
| 22 | //config: leaving just the filename itself. Enable this option if you wish |
| 23 | //config: to enable the 'basename' utility. |
| 24 | |
Denys Vlasenko | af3f420 | 2016-11-23 14:46:56 +0100 | [diff] [blame^] | 25 | //applet:IF_BASENAME(APPLET_NOFORK(basename, basename, BB_DIR_USR_BIN, BB_SUID_DROP, basename)) |
| 26 | |
| 27 | //kbuild:lib-$(CONFIG_BASENAME) += basename.o |
| 28 | |
| 29 | /* BB_AUDIT SUSv3 compliant */ |
| 30 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */ |
| 31 | |
Pere Orga | 3442538 | 2011-03-31 14:43:25 +0200 | [diff] [blame] | 32 | //usage:#define basename_trivial_usage |
| 33 | //usage: "FILE [SUFFIX]" |
| 34 | //usage:#define basename_full_usage "\n\n" |
Denys Vlasenko | 86031a5 | 2015-01-24 19:46:45 +0100 | [diff] [blame] | 35 | //usage: "Strip directory path and .SUFFIX from FILE" |
Pere Orga | 3442538 | 2011-03-31 14:43:25 +0200 | [diff] [blame] | 36 | //usage: |
| 37 | //usage:#define basename_example_usage |
| 38 | //usage: "$ basename /usr/local/bin/foo\n" |
| 39 | //usage: "foo\n" |
| 40 | //usage: "$ basename /usr/local/bin/\n" |
| 41 | //usage: "bin\n" |
| 42 | //usage: "$ basename /foo/bar.txt .txt\n" |
| 43 | //usage: "bar" |
| 44 | |
Denis Vlasenko | b6adbf1 | 2007-05-26 19:00:18 +0000 | [diff] [blame] | 45 | #include "libbb.h" |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 46 | |
Denis Vlasenko | 99912ca | 2007-04-10 15:43:37 +0000 | [diff] [blame] | 47 | /* This is a NOFORK applet. Be very careful! */ |
| 48 | |
Denis Vlasenko | 9b49a5e | 2007-10-11 10:05:36 +0000 | [diff] [blame] | 49 | int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
Rob Landley | dfba741 | 2006-03-06 20:47:33 +0000 | [diff] [blame] | 50 | int basename_main(int argc, char **argv) |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 51 | { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 52 | size_t m, n; |
Eric Andersen | a005373 | 2000-07-10 20:08:09 +0000 | [diff] [blame] | 53 | char *s; |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 54 | |
Denys Vlasenko | c13ee8c | 2011-04-11 03:58:30 +0200 | [diff] [blame] | 55 | if (argv[1] && strcmp(argv[1], "--") == 0) { |
| 56 | argv++; |
| 57 | argc--; |
| 58 | } |
| 59 | |
Denys Vlasenko | 729ecb8 | 2010-06-07 14:14:26 +0200 | [diff] [blame] | 60 | if ((unsigned)(argc-2) >= 2) { |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 61 | bb_show_usage(); |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 62 | } |
Erik Andersen | 330fd2b | 2000-05-19 05:35:19 +0000 | [diff] [blame] | 63 | |
Denis Vlasenko | 818322b | 2007-09-24 18:27:04 +0000 | [diff] [blame] | 64 | /* It should strip slash: /abc/def/ -> def */ |
| 65 | s = bb_get_last_path_component_strip(*++argv); |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 66 | |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 67 | m = strlen(s); |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 68 | if (*++argv) { |
Erik Andersen | ac130e1 | 2000-05-10 05:00:31 +0000 | [diff] [blame] | 69 | n = strlen(*argv); |
Denys Vlasenko | 729ecb8 | 2010-06-07 14:14:26 +0200 | [diff] [blame] | 70 | if ((m > n) && (strcmp(s+m-n, *argv) == 0)) { |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 71 | m -= n; |
Denis Vlasenko | c59d802 | 2008-04-01 16:29:21 +0000 | [diff] [blame] | 72 | /*s[m] = '\0'; - redundant */ |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 73 | } |
Erik Andersen | ac130e1 | 2000-05-10 05:00:31 +0000 | [diff] [blame] | 74 | } |
Manuel Novoa III | cad5364 | 2003-03-19 09:13:01 +0000 | [diff] [blame] | 75 | |
Denis Vlasenko | 468aea2 | 2008-04-01 14:47:57 +0000 | [diff] [blame] | 76 | /* puts(s) will do, but we can do without stdio this way: */ |
| 77 | s[m++] = '\n'; |
Denis Vlasenko | 70e8f49 | 2008-11-06 15:13:33 +0000 | [diff] [blame] | 78 | /* NB: != is correct here: */ |
| 79 | return full_write(STDOUT_FILENO, s, m) != (ssize_t)m; |
Erik Andersen | 42387e4 | 2000-02-21 17:27:17 +0000 | [diff] [blame] | 80 | } |