/* 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 source tree. */ /* 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. */ //config:config BASENAME //config: bool "basename (371 bytes)" //config: default y //config: help //config: basename is used to strip the directory and suffix from filenames, //config: leaving just the filename itself. Enable this option if you wish //config: to enable the 'basename' utility. //applet:IF_BASENAME(APPLET_NOFORK(basename, basename, BB_DIR_USR_BIN, BB_SUID_DROP, basename)) //kbuild:lib-$(CONFIG_BASENAME) += basename.o /* BB_AUDIT SUSv3 compliant */ /* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */ //usage:#define basename_trivial_usage //usage: "FILE [SUFFIX]" //usage:#define basename_full_usage "\n\n" //usage: "Strip directory path and .SUFFIX from FILE" //usage: //usage:#define basename_example_usage //usage: "$ basename /usr/local/bin/foo\n" //usage: "foo\n" //usage: "$ basename /usr/local/bin/\n" //usage: "bin\n" //usage: "$ basename /foo/bar.txt .txt\n" //usage: "bar" #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 UNUSED_PARAM, char **argv) { size_t m, n; char *s; if (argv[1] && strcmp(argv[1], "--") == 0) { argv++; } if (!argv[1]) bb_show_usage(); /* It should strip slash: /abc/def/ -> def */ s = bb_get_last_path_component_strip(*++argv); m = strlen(s); if (*++argv) { if (argv[1]) bb_show_usage(); 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'; /* NB: != is correct here: */ return full_write(STDOUT_FILENO, s, m) != (ssize_t)m; }