--- /dev/null
+/* savedir.c -- save the list of files in a directory in a string
+ Copyright (C) 1990, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+
+ 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 2, 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, write to the Free Software Foundation,
+ Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+/* Written by David MacKenzie <djm@gnu.ai.mit.edu>. */
+
+#if HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#if HAVE_DIRENT_H
+# include <dirent.h>
+# define NAMLEN(dirent) strlen((dirent)->d_name)
+#else
+# define dirent direct
+# define NAMLEN(dirent) (dirent)->d_namlen
+# if HAVE_SYS_NDIR_H
+# include <sys/ndir.h>
+# endif
+# if HAVE_SYS_DIR_H
+# include <sys/dir.h>
+# endif
+# if HAVE_NDIR_H
+# include <ndir.h>
+# endif
+#endif
+
+#ifdef CLOSEDIR_VOID
+/* Fake a return value. */
+# define CLOSEDIR(d) (closedir (d), 0)
+#else
+# define CLOSEDIR(d) closedir (d)
+#endif
+
+#ifdef STDC_HEADERS
+# include <stdlib.h>
+# include <string.h>
+#else
+char *malloc ();
+char *realloc ();
+#endif
+#ifndef NULL
+# define NULL 0
+#endif
+
+#ifndef stpcpy
+char *stpcpy ();
+#endif
+
+#include "savedir.h"
+
+/* Return a freshly allocated string containing the filenames
+ in directory DIR, separated by '\0' characters;
+ the end is marked by two '\0' characters in a row.
+ NAME_SIZE is the number of bytes to initially allocate
+ for the string; it will be enlarged as needed.
+ Return NULL if DIR cannot be opened or if out of memory. */
+
+char *
+savedir (const char *dir, off_t name_size)
+{
+ DIR *dirp;
+ struct dirent *dp;
+ char *name_space;
+ char *namep;
+
+ dirp = opendir (dir);
+ if (dirp == NULL)
+ return NULL;
+
+ /* Be sure name_size is at least `1' so there's room for
+ the final NUL byte. */
+ name_size += !name_size;
+
+ name_space = (char *) malloc (name_size);
+ if (name_space == NULL)
+ {
+ closedir (dirp);
+ return NULL;
+ }
+ namep = name_space;
+
+ while ((dp = readdir (dirp)) != NULL)
+ {
+ /* Skip "." and ".." (some NFS filesystems' directories lack them). */
+ if (dp->d_name[0] != '.'
+ || (dp->d_name[1] != '\0'
+ && (dp->d_name[1] != '.' || dp->d_name[2] != '\0')))
+ {
+ off_t size_needed = (namep - name_space) + NAMLEN (dp) + 2;
+
+ if (size_needed > name_size)
+ {
+ char *new_name_space;
+
+ while (size_needed > name_size)
+ name_size += 1024;
+
+ new_name_space = realloc (name_space, name_size);
+ if (new_name_space == NULL)
+ {
+ closedir (dirp);
+ return NULL;
+ }
+ namep += new_name_space - name_space;
+ name_space = new_name_space;
+ }
+ namep = stpcpy (namep, dp->d_name) + 1;
+ }
+ }
+ *namep = '\0';
+ if (CLOSEDIR (dirp))
+ {
+ free (name_space);
+ return NULL;
+ }
+ return name_space;
+}