1 /* Iterate over arguments from argv or --files0-from=FILE
2 Copyright (C) 2008-2011 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation, either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <http://www.gnu.org/licenses/>. */
17 /* Written by Jim Meyering. */
20 #include "argv-iter.h"
27 /* Test FP to determine whether in read-mode or argv-mode. */
28 /* file-mode: fp records position */
34 /* argv-mode: record just argv and current pointer */
39 struct argv_iterator *
40 argv_iter_init_argv (char **argv)
42 struct argv_iterator *ai = malloc (sizeof *ai);
51 /* Initialize to read from the stream, FP.
52 The input is expected to contain a list of NUL-delimited tokens. */
53 struct argv_iterator *
54 argv_iter_init_stream (FILE *fp)
56 struct argv_iterator *ai = malloc (sizeof *ai);
69 argv_iter (struct argv_iterator *ai, enum argv_iter_err *err)
73 ssize_t len = getdelim (&ai->tok, &ai->buf_len, '\0', ai->fp);
76 *err = feof (ai->fp) ? AI_ERR_EOF : AI_ERR_READ;
100 argv_iter_n_args (struct argv_iterator const *ai)
102 return ai->fp ? ai->item_idx : ai->p - ai->arg_list;
106 argv_iter_free (struct argv_iterator *ai)