/*
  * Tee common code
  * Copyright (c) 2012 Nicolas George
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public License
  * as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * FFmpeg 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 Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public License
  * along with FFmpeg; if not, write to the Free Software * Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
 #include "libavutil/avutil.h"
 #include "libavutil/avstring.h"
 #include "libavutil/opt.h"
 
 #include "tee_common.h"
 
 static const char *const slave_opt_open  = "[";
 static const char *const slave_opt_close = "]";
 static const char *const slave_opt_delim = ":]"; /* must have the close too */
 
 int ff_tee_parse_slave_options(void *log, char *slave,
                                AVDictionary **options, char **filename)
 {
     const char *p;
     char *key, *val;
     int ret;
 
     if (!strspn(slave, slave_opt_open)) {
         *filename = slave;
         return 0;
     }
     p = slave + 1;
     if (strspn(p, slave_opt_close)) {
         *filename = (char *)p + 1;
         return 0;
     }
     while (1) {
         ret = av_opt_get_key_value(&p, "=", slave_opt_delim, 0, &key, &val);
         if (ret < 0) {
             av_log(log, AV_LOG_ERROR, "No option found near \"%s\"\n", p);
             goto fail;
         }
         ret = av_dict_set(options, key, val,
                           AV_DICT_DONT_STRDUP_KEY | AV_DICT_DONT_STRDUP_VAL);
         if (ret < 0)
             goto fail;
         if (strspn(p, slave_opt_close))
             break;
         p++;
     }
     *filename = (char *)p + 1;
     return 0;
 
 fail:
     av_dict_free(options);
     return ret;
 }