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sortix--sortix/utils/mkdir.cpp
2015-12-12 19:28:07 +01:00

146 lines
3.6 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/>.
mkdir.cpp
Create a directory.
*******************************************************************************/
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#include <error.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
void CreateDirectory(const char* path, bool parents, bool verbose)
{
if ( mkdir(path, 0777) < 0 )
{
if ( parents )
{
if ( errno == EEXIST )
return;
if ( errno == ENOENT )
{
char* path_copy = strdup(path);
char* last_slash = strrchr(path_copy, '/');
if ( last_slash )
{
*last_slash = 0;
if ( *path_copy )
{
CreateDirectory(path_copy, parents, verbose);
free(path_copy);
CreateDirectory(path, parents, verbose);
return;
}
}
free(path_copy);
}
}
error(1, errno, "cannot create directory `%s'", path);
}
if ( verbose )
fprintf(stderr, "%s: created directory `%s'\n", program_invocation_name, path);
}
static void compact_arguments(int* argc, char*** argv)
{
for ( int i = 0; i < *argc; i++ )
{
while ( i < *argc && !(*argv)[i] )
{
for ( int n = i; n < *argc; n++ )
(*argv)[n] = (*argv)[n+1];
(*argc)--;
}
}
}
static void help(FILE* fp, const char* argv0)
{
fprintf(fp, "Usage: %s [OPTION]... DIRECTORY...\n", argv0);
fprintf(fp, "Create directories if they don't already exist.\n");
}
static 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 parents = false;
bool verbose = false;
for ( int i = 1; i < argc; i++ )
{
const char* arg = argv[i];
if ( arg[0] != '-' || !arg[1] )
continue;
argv[i] = NULL;
if ( !strcmp(arg, "--") )
break;
if ( arg[1] != '-' )
{
while ( char c = *++arg ) switch ( c )
{
case 'p': parents = true; break;
case 'v': verbose = true; break;
default:
fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, arg[i]);
help(stderr, argv0);
exit(1);
}
}
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, "--version") )
version(stdout, argv0), exit(0);
else
{
fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
help(stderr, argv0);
exit(1);
}
}
compact_arguments(&argc, &argv);
if ( argc < 2 )
error(1, 0, "missing operand");
for ( int i = 1; i < argc; i++ )
{
const char* arg = argv[i];
if ( !arg )
continue;
CreateDirectory(arg, parents, verbose);
}
return 0;
}