| /* vi: set sw=4 ts=4: */ |
| /* |
| * Mini basename implementation for busybox |
| * |
| * Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org> |
| * |
| * Licensed under GPLv2 or later, see file LICENSE in this tarball for details. |
| * |
| */ |
| |
| /* BB_AUDIT SUSv3 compliant */ |
| /* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */ |
| |
| |
| /* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org) |
| * |
| * Changes: |
| * 1) Now checks for too many args. Need at least one and at most two. |
| * 2) Don't check for options, as per SUSv3. |
| * 3) Save some space by using strcmp(). Calling strncmp() here was silly. |
| */ |
| |
| #include "libbb.h" |
| |
| /* This is a NOFORK applet. Be very careful! */ |
| |
| int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE; |
| int basename_main(int argc, char **argv) |
| { |
| size_t m, n; |
| char *s; |
| |
| if (((unsigned int)(argc-2)) >= 2) { |
| bb_show_usage(); |
| } |
| |
| /* It should strip slash: /abc/def/ -> def */ |
| s = bb_get_last_path_component_strip(*++argv); |
| |
| m = strlen(s); |
| if (*++argv) { |
| n = strlen(*argv); |
| if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) { |
| m -= n; |
| /*s[m] = '\0'; - redundant */ |
| } |
| } |
| |
| /* puts(s) will do, but we can do without stdio this way: */ |
| s[m++] = '\n'; |
| return full_write(STDOUT_FILENO, s, m) == (ssize_t)m; |
| } |