134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2012.
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This program is free software: you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the Free
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Software Foundation, either version 3 of the License, or (at your option)
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any later version.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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rmdir.c
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Remove an empty directory.
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*******************************************************************************/
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#include <sys/types.h>
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#include <errno.h>
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#include <error.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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static void compact_arguments(int* argc, char*** argv)
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{
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for ( int i = 0; i < *argc; i++ )
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{
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while ( i < *argc && !(*argv)[i] )
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{
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for ( int n = i; n < *argc; n++ )
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(*argv)[n] = (*argv)[n+1];
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(*argc)--;
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}
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}
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}
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static void help(FILE* fp, const char* argv0)
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{
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fprintf(fp, "Usage: %s [OPTION]... DIRECTORY...\n", argv0);
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fprintf(fp, "Remove directories if they are empty.\n");
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}
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static void version(FILE* fp, const char* argv0)
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{
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fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
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fprintf(fp, "License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.\n");
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fprintf(fp, "This is free software: you are free to change and redistribute it.\n");
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fprintf(fp, "There is NO WARRANTY, to the extent permitted by law.\n");
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}
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int main(int argc, char* argv[])
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{
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const char* argv0 = argv[0];
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bool ignore_non_empty = false;
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bool parents = false;
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bool verbose = false;
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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if ( arg[0] != '-' || !arg[1] )
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continue;
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argv[i] = NULL;
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if ( !strcmp(arg, "--") )
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break;
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if ( arg[1] != '-' )
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{
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char c;
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while ( (c = *++arg) ) switch ( c )
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{
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case 'p': parents = true; break;
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case 'v': verbose = true; break;
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default:
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fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
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help(stderr, argv0);
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exit(1);
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}
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}
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else if ( !strcmp(arg, "--ignore-fail-on-non-empty") )
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ignore_non_empty = true;
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else if ( !strcmp(arg, "--parents") )
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parents = true;
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else if ( !strcmp(arg, "--verbose") )
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verbose = true;
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else if ( !strcmp(arg, "--help") )
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help(stdout, argv0), exit(0);
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else if ( !strcmp(arg, "--version") )
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version(stdout, argv0), exit(0);
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else
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{
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fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
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help(stderr, argv0);
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exit(1);
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}
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}
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compact_arguments(&argc, &argv);
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if ( argc < 2 )
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error(1, 0, "missing operand");
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for ( int i = 1; i < argc; i++ )
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{
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const char* arg = argv[i];
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// TODO: Support --parents option.
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(void) parents;
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int ret = rmdir(arg);
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if ( ret < 0 )
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{
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if ( ignore_non_empty && errno == ENOTEMPTY )
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{
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if ( verbose )
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fprintf(stderr, "%s: skipping non-empty directory `%s'\n", argv0, arg);
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continue;
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}
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error(1, errno, "cannot remove directory `%s'", arg);
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}
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if ( verbose )
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fprintf(stderr, "%s: removed directory `%s'\n", argv0, arg);
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}
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return 0;
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}
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