mirror of
https://github.com/topjohnwu/ndk-busybox.git
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468aea2d88
just build relevant source and use xxx_main functions. build system: add a special case when we have exactly one applet enabled (makes "true", "false", "basename" REALLY tiny). getopt32: do not use stdio. function old new delta getopt32 1385 1412 +27 make_device 1187 1200 +13 basename_main 120 127 +7 tcpudpsvd_main 1922 1926 +4 testcmd 5 - -5 echocmd 5 - -5 fuser_main 1243 1231 -12 ------------------------------------------------------------------------------ (add/remove: 0/2 grow/shrink: 4/1 up/down: 51/-22) Total: 29 bytes
53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini basename implementation for busybox
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*
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* Copyright (C) 1999-2004 by Erik Andersen <andersen@codepoet.org>
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*
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* Licensed under GPLv2 or later, see file LICENSE in this tarball for details.
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*
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*/
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/* BB_AUDIT SUSv3 compliant */
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/* http://www.opengroup.org/onlinepubs/007904975/utilities/basename.html */
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Changes:
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* 1) Now checks for too many args. Need at least one and at most two.
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* 2) Don't check for options, as per SUSv3.
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* 3) Save some space by using strcmp(). Calling strncmp() here was silly.
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*/
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#include "libbb.h"
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/* This is a NOFORK applet. Be very careful! */
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int basename_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
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int basename_main(int argc, char **argv)
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{
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size_t m, n;
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char *s;
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if (((unsigned int)(argc-2)) >= 2) {
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bb_show_usage();
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}
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/* It should strip slash: /abc/def/ -> def */
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s = bb_get_last_path_component_strip(*++argv);
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m = strlen(s);
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if (*++argv) {
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n = strlen(*argv);
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if ((m > n) && ((strcmp)(s+m-n, *argv) == 0)) {
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m -= n;
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s[m] = '\0';
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}
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}
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/* puts(s) will do, but we can do without stdio this way: */
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s[m++] = '\n';
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return full_write(STDOUT_FILENO, s, m) == m;
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}
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