mirror of
https://github.com/topjohnwu/ndk-busybox.git
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8876fb2f59
Manuel,
I rewrite bb_getopt_ulflags() function for more universal usage.
My version support now:
- options with arguments (optional arg as GNU extension also)
- complementaly and/or incomplementaly and/or incongruously and/or list
options
- long_opt (all applets may have long option, add supporting is trivial)
This realisation full compatibile from your version.
Code size grow 480 bytes, but only coreutils/* over compensate this size
after using new function. Last patch reduced over 800 bytes and not full
applied to all. "mkdir" and "mv" applets have long_opt now for demonstrate
trivial addition support long_opt with usage new bb_getopt_ulflags().
Complementaly and/or incomplementaly and/or incongruously and/or list options
logic is not trivial, but new "cut" and "grep" applets using this logic
for examples with full demostrating. New "grep" applet reduced over 300
bytes.
Mark,
Also. I removed bug from "grep" applet.
$ echo a b | busybox grep -e a b
a b
a b
But right is printing one only.
--w
vodz
144 lines
3.4 KiB
C
144 lines
3.4 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini mv implementation for busybox
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*
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* Copyright (C) 2000 by Matt Kraai <kraai@alumni.carnegiemellon.edu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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/* Mar 16, 2003 Manuel Novoa III (mjn3@codepoet.org)
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*
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* Size reduction and improved error checking.
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*/
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <getopt.h>
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#include "busybox.h"
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#include "libcoreutils/coreutils.h"
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static const struct option mv_long_options[] = {
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{ "interactive", 0, NULL, 'i' },
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{ "force", 0, NULL, 'f' },
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{ 0, 0, 0, 0 }
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};
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static const char mv_getopt_short_option[] = "fi";
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#define OPT_FILEUTILS_FORCE 1
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#define OPT_FILEUTILS_INTERACTIVE 2
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static const char fmt[] = "cannot overwrite %sdirectory with %sdirectory";
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extern int mv_main(int argc, char **argv)
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{
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struct stat source_stat;
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struct stat dest_stat;
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const char *last;
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const char *dest;
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int dest_exists;
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int source_exists;
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unsigned long flags;
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int status = 0;
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bb_applet_long_options = mv_long_options;
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bb_opt_complementaly = "f-i:i-f";
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flags = bb_getopt_ulflags(argc, argv, mv_getopt_short_option);
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if (optind + 2 > argc)
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bb_show_usage();
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last = argv[argc - 1];
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argv += optind;
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if (optind + 2 == argc) {
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if ((dest_exists = cp_mv_stat(last, &dest_stat)) < 0) {
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return 1;
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}
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if (!(dest_exists & 2)) {
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dest = last;
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goto DO_MOVE;
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}
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}
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do {
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dest = concat_path_file(last, bb_get_last_path_component(*argv));
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if ((dest_exists = cp_mv_stat(dest, &dest_stat)) < 0) {
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goto RET_1;
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}
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DO_MOVE:
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if (dest_exists && !(flags & OPT_FILEUTILS_FORCE) &&
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((access(dest, W_OK) < 0 && isatty(0)) ||
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(flags & OPT_FILEUTILS_INTERACTIVE))) {
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if (fprintf(stderr, "mv: overwrite `%s'? ", dest) < 0) {
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goto RET_1; /* Ouch! fprintf failed! */
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}
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if (!bb_ask_confirmation())
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goto RET_0;
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}
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if (rename(*argv, dest) < 0) {
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if (errno != EXDEV) {
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bb_perror_msg("unable to rename `%s'", *argv);
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} else if ((source_exists = cp_mv_stat(*argv, &source_stat)) >= 0) {
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if (dest_exists) {
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if (dest_exists & 2) {
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if (!(source_exists & 2)) {
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bb_error_msg(fmt, "", "non-");
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goto RET_1;
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}
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} else {
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if (source_exists & 2) {
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bb_error_msg(fmt, "non-", "");
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goto RET_1;
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}
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}
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if (unlink(dest) < 0) {
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bb_perror_msg("cannot remove `%s'", dest);
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goto RET_1;
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}
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}
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if ((copy_file(*argv, dest,
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FILEUTILS_RECUR | FILEUTILS_PRESERVE_STATUS) >= 0)
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&& (remove_file(*argv, FILEUTILS_RECUR | FILEUTILS_FORCE) >= 0)
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) {
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goto RET_0;
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}
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}
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RET_1:
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status = 1;
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}
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RET_0:
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if (dest != last) {
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free((void *) dest);
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}
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} while (*++argv != last);
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exit(status);
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}
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