Add license headers and comments to source

Signed-off-by: David Oberhollenzer <david.oberhollenzer@tele2.at>

1 files changed, 22 insertions, 0 deletions

diff --git a/lib/include/util.h b/lib/include/util.h
index bed2ba7..ed5dac2 100644
--- a/lib/include/util.h
+++ b/lib/include/util.h
@@ -1,3 +1,20 @@
+/* SPDX-License-Identifier: GPL-3.0-or-later */
+/*
+ * Copyright (C) 2018 - David Oberhollenzer
+ *
+ * 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 <https://www.gnu.org/licenses/>.
+ */
 #ifndef UTIL_H
 #define UTIL_H
 
@@ -52,6 +69,11 @@ int splitkv(char *line, char **key, char **value);
 */
 const enum_map_t *enum_by_name(const enum_map_t *map, const char *name);
 
+/*
+	Create a copy of the input string inp, but replace all occourances
+	of %<number> with argv[number] if the number is within the bounds
+	specified by argc.
+*/
 char *strexpand(const char *inp, size_t argc, const char *const *argv);
 
 #endif /* UTIL_H */