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emacs/lib-src/make-path.c

86 lines
2.1 KiB
C

/* Make all the directories along a path.
Copyright (C) 1992 Free Software Foundation, Inc.
This file is part of GNU Emacs.
GNU Emacs 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 1, or (at your option)
any later version.
GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
/* This program works like mkdir, except that it generates
intermediate directories if they don't exist. This is just like
the `mkdir -p' command on most systems; unfortunately, the mkdir
command on some of the purer BSD systems (like Mt. Xinu) don't have
that option. */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdio.h>
#include <errno.h>
extern int errno;
char *prog_name;
int touchy_mkdir (path)
char *path;
{
struct stat buf;
/* If PATH already exists and is a directory, return success. */
if (stat (path, &buf) >= 0
&& (buf.st_mode & S_IFMT) == S_IFDIR)
return 0;
/* Otherwise, try to make it. If PATH exists but isn't a directory,
this will signal an error. */
if (mkdir (path, 0777) < 0)
{
fprintf (stderr, "%s: ", prog_name);
perror (path);
return -1;
}
return 0;
}
int
main (argc, argv)
int argc;
char **argv;
{
prog_name = *argv;
for (argc--, argv++; argc > 0; argc--, argv++)
{
char *path = *argv;
int i;
/* Stop at each slash in path and try to create the directory.
Skip any initial slash. */
for (i = (path[0] == '/') ? 1 : 0; path[i]; i++)
if (path[i] == '/')
{
path[i] = '\0';
if (touchy_mkdir (path) < 0)
goto next_pathname;
path[i] = '/';
}
touchy_mkdir (path);
next_pathname:
;
}
}