From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- dirent/scandir.c | 89 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 89 insertions(+) create mode 100644 dirent/scandir.c (limited to 'dirent/scandir.c') diff --git a/dirent/scandir.c b/dirent/scandir.c new file mode 100644 index 0000000000..6794eadf0d --- /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 +#include +#include + +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; +} -- cgit v1.2.3