diff options
Diffstat (limited to 'lib/xfts.c')
-rw-r--r-- | lib/xfts.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/xfts.c b/lib/xfts.c new file mode 100644 index 0000000..1402e95 --- /dev/null +++ b/lib/xfts.c @@ -0,0 +1,64 @@ +/* xfts.c -- a wrapper for fts_open + + Copyright (C) 2003, 2005-2007 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ + +/* Written by Jim Meyering. */ + +#include <config.h> + +#include <stdbool.h> +#include <stdlib.h> + +#include "error.h" + +#include "gettext.h" +#define _(msgid) gettext (msgid) + +#include "quote.h" +#include "xalloc.h" +#include "xfts.h" + +/* Fail with a proper diagnostic if fts_open fails. */ + +FTS * +xfts_open (char * const *argv, int options, + int (*compar) (const FTSENT **, const FTSENT **)) +{ + FTS *fts = fts_open (argv, options | FTS_CWDFD, compar); + if (fts == NULL) + { + /* This can fail in three ways: out of memory, invalid bit_flags, + and one or more of the FILES is an empty string. We could try + to decipher that errno==EINVAL means invalid bit_flags and + errno==ENOENT means there's an empty string, but that seems wrong. + Ideally, fts_open would return a proper error indicator. For now, + we'll presume that the bit_flags are valid and just check for + empty strings. */ + bool invalid_arg = false; + for (; *argv; ++argv) + { + if (**argv == '\0') + invalid_arg = true; + } + if (invalid_arg) + error (EXIT_FAILURE, 0, _("invalid argument: %s"), quote ("")); + else + xalloc_die (); + } + + return fts; +} |