77 lines
1.5 KiB
C
77 lines
1.5 KiB
C
/*
|
|
* iod.c - Iterate a function on each entry of a directory
|
|
*
|
|
* Copyright (C) 1993, 1994 Remy Card <card@masi.ibp.fr>
|
|
* Laboratoire MASI, Institut Blaise Pascal
|
|
* Universite Pierre et Marie Curie (Paris VI)
|
|
*
|
|
* %Begin-Header%
|
|
* This file may be redistributed under the terms of the GNU Library
|
|
* General Public License, version 2.
|
|
* %End-Header%
|
|
*/
|
|
|
|
/*
|
|
* History:
|
|
* 93/10/30 - Creation
|
|
*/
|
|
|
|
#include "config.h"
|
|
#include "e2p.h"
|
|
#if HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
int iterate_on_dir (const char * dir_name,
|
|
int (*func) (const char *, struct dirent *, void *),
|
|
void * private)
|
|
{
|
|
DIR * dir;
|
|
struct dirent *de, *dep;
|
|
int max_len = -1, len, ret = 0;
|
|
|
|
#if HAVE_PATHCONF && defined(_PC_NAME_MAX)
|
|
max_len = pathconf(dir_name, _PC_NAME_MAX);
|
|
#endif
|
|
if (max_len == -1) {
|
|
#ifdef _POSIX_NAME_MAX
|
|
max_len = _POSIX_NAME_MAX;
|
|
#else
|
|
#ifdef NAME_MAX
|
|
max_len = NAME_MAX;
|
|
#else
|
|
max_len = 256;
|
|
#endif /* NAME_MAX */
|
|
#endif /* _POSIX_NAME_MAX */
|
|
}
|
|
max_len += sizeof(struct dirent);
|
|
|
|
de = malloc(max_len+1);
|
|
if (!de)
|
|
return -1;
|
|
memset(de, 0, max_len+1);
|
|
|
|
dir = opendir (dir_name);
|
|
if (dir == NULL) {
|
|
free(de);
|
|
return -1;
|
|
}
|
|
while ((dep = readdir (dir))) {
|
|
#ifdef HAVE_RECLEN_DIRENT
|
|
len = dep->d_reclen;
|
|
if (len > max_len)
|
|
len = max_len;
|
|
#else
|
|
len = sizeof(struct dirent);
|
|
#endif
|
|
memcpy(de, dep, len);
|
|
if ((*func)(dir_name, de, private))
|
|
ret++;
|
|
}
|
|
free(de);
|
|
closedir(dir);
|
|
return ret;
|
|
}
|