argv-iter: new module

* MODULES.html.sh: Add argv-iter.
* lib/argv-iter.c, lib/argv-iter.h: New files.
* modules/argv-iter: New file.
* modules/argv-iter-tests: New file.
* tests/test-argv-iter.c: Test it.

1 files changed, 47 insertions, 0 deletions

diff --git a/lib/argv-iter.h b/lib/argv-iter.h
new file mode 100644
index 0000000000..537fb1ea29
--- /dev/null
+++ b/lib/argv-iter.h
@@ -0,0 +1,47 @@
+/* Iterate over arguments from argv or --files0-from=FILE
+   Copyright (C) 2008-2009 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 3 of the License, 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, see <http://www.gnu.org/licenses/>.  */
+
+#include <stdio.h>
+#include <stdbool.h>
+
+struct argv_iterator;
+enum argv_iter_err;
+
+#undef _ATTRIBUTE_NONNULL_
+#if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || 3 < __GNUC__
+# define _ATTRIBUTE_NONNULL_(m) __attribute__ ((__nonnull__ (m)))
+#else
+# define _ATTRIBUTE_NONNULL_(m)
+#endif
+
+enum argv_iter_err
+{
+  AI_ERR_OK = 1,
+  AI_ERR_EOF,
+  AI_ERR_MEM,
+  AI_ERR_READ
+};
+
+struct argv_iterator *argv_iter_init_argv (char **argv)
+  _ATTRIBUTE_NONNULL_ (1);
+struct argv_iterator *argv_iter_init_stream (FILE *fp)
+  _ATTRIBUTE_NONNULL_ (1);
+char *argv_iter (struct argv_iterator *, enum argv_iter_err *)
+  _ATTRIBUTE_NONNULL_ (1) _ATTRIBUTE_NONNULL_ (2);
+size_t argv_iter_n_args (struct argv_iterator const *)
+  _ATTRIBUTE_NONNULL_ (1);
+void argv_iter_free (struct argv_iterator *)
+  _ATTRIBUTE_NONNULL_ (1);