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sortix--sortix/utils/rmdir.cpp
Jonas 'Sortie' Termansen fe542c9276 Add rmdir(1).
2013-12-17 14:30:27 +01:00

133 lines
3.5 KiB
C++

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