Contents of /trunk/mkinitrd-magellan/busybox/coreutils/basename.c
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
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Wed Aug 18 21:56:57 2010 UTC (14 years, 1 month ago) by niro
File MIME type: text/plain
File size: 1621 byte(s)
-updated to busybox-1.17.1
1 | /* vi: set sw=4 ts=4: */ |
2 | /* |
3 | * Mini basename implementation for busybox |
4 | * |
5 | * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
6 | * |
7 | * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
8 | */ |
9 | |
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 | */ |
17 | |
18 | /* BB_AUDIT SUSv3 compliant */ |
19 | /* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */ |
20 | |
21 | //kbuild:lib-$(CONFIG_BASENAME) += basename.o |
22 | |
23 | //config:config BASENAME |
24 | //config: bool "basename" |
25 | //config: default y |
26 | //config: help |
27 | //config: basename is used to strip the directory and suffix from filenames, |
28 | //config: leaving just the filename itself. Enable this option if you wish |
29 | //config: to enable the 'basename' utility. |
30 | |
31 | #include "libbb.h" |
32 | |
33 | /* This is a NOFORK applet. Be very careful! */ |
34 | |
35 | int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
36 | int basename_main(int argc, char **argv) |
37 | { |
38 | size_t m, n; |
39 | char *s; |
40 | |
41 | if ((unsigned)(argc-2) >= 2) { |
42 | bb_show_usage(); |
43 | } |
44 | |
45 | /* It should strip slash: /abc/def/ -> def */ |
46 | s = bb_get_last_path_component_strip(*++argv); |
47 | |
48 | m = strlen(s); |
49 | if (*++argv) { |
50 | n = strlen(*argv); |
51 | if ((m > n) && (strcmp(s+m-n, *argv) == 0)) { |
52 | m -= n; |
53 | /*s[m] = '\0'; - redundant */ |
54 | } |
55 | } |
56 | |
57 | /* puts(s) will do, but we can do without stdio this way: */ |
58 | s[m++] = '\n'; |
59 | /* NB: != is correct here: */ |
60 | return full_write(STDOUT_FILENO, s, m) != (ssize_t)m; |
61 | } |