initial import

1 files changed, 89 insertions, 0 deletions

diff --git a/dirent/scandir.c b/dirent/scandir.c
new file mode 100644
index 0000000..6794ead
--- /dev/null
+++ b/dirent/scandir.c
@@ -0,0 +1,89 @@
+/* Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 675 Mass Ave,
+Cambridge, MA 02139, USA.  */
+
+#include <ansidecl.h>
+#include <dirent.h>
+#include <stdlib.h>
+
+int
+DEFUN(scandir, (dir, namelist, select, cmp),
+      CONST char *dir AND
+      struct dirent ***namelist AND
+      int EXFUN((*select), (struct dirent *)) AND
+      int EXFUN((*cmp), (CONST PTR, CONST PTR)))
+{
+  DIR *dp = opendir (dir);
+  struct dirent **v = NULL;
+  size_t vsize = 0, i;
+  struct dirent *d;
+  int save;
+
+  if (dp == NULL)
+    return -1;
+
+  save = errno;
+  errno = 0;
+
+  i = 0;
+  while ((d = readdir (dp)) != NULL)
+    if (select == NULL || (*select) (d))
+      {
+	if (i == vsize)
+	  {
+	    struct dirent **new;
+	    if (vsize == 0)
+	      vsize = 10;
+	    else
+	      vsize *= 2;
+	    new = (struct dirent **) realloc (v, vsize * sizeof (*v));
+	    if (new == NULL)
+	      {
+	      lose:
+		errno = ENOMEM;
+		break;
+	      }
+	    v = new;
+	  }
+
+	v[i] = (struct dirent *) malloc (sizeof (**v));
+	if (v[i] == NULL)
+	  goto lose;
+
+	*v[i++] = *d;
+      }
+
+  if (errno != 0)
+    {
+      save = errno;
+      (void) closedir (dp);
+      while (i > 0)
+	free (v[--i]);
+      free (v);
+      errno = save;
+      return -1;
+    }
+
+  (void) closedir (dp);
+  errno = save;
+
+  /* Sort the list if we have a comparison function to sort with.  */
+  if (cmp != NULL)
+    qsort (v, i, sizeof (*v), cmp);
+  *namelist = v;
+  return i;
+}