/* 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'; /* NB: != is correct here: */ return full_write(STDOUT_FILENO, s, m) != (ssize_t)m; }