From ab0287fcbdebc8ff416214535d7ee8424406990e Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 16 Feb 2011 09:52:38 +0100
Subject: Move find_info_tag to lavu and add av_ prefix to it

Signed-off-by: Janne Grunau <janne-ffmpeg@jannau.net>
---
 libavutil/parseutils.c | 39 +++++++++++++++++++++++++++++++++++++++
 libavutil/parseutils.h |  8 ++++++++
 2 files changed, 47 insertions(+)

(limited to 'libavutil')

diff --git a/libavutil/parseutils.c b/libavutil/parseutils.c
index 8e09dade62..d67d31bffe 100644
--- a/libavutil/parseutils.c
+++ b/libavutil/parseutils.c
@@ -608,6 +608,45 @@ int av_parse_time(int64_t *timeval, const char *datestr, int duration)
     return 0;
 }
 
+int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
+{
+    const char *p;
+    char tag[128], *q;
+
+    p = info;
+    if (*p == '?')
+        p++;
+    for(;;) {
+        q = tag;
+        while (*p != '\0' && *p != '=' && *p != '&') {
+            if ((q - tag) < sizeof(tag) - 1)
+                *q++ = *p;
+            p++;
+        }
+        *q = '\0';
+        q = arg;
+        if (*p == '=') {
+            p++;
+            while (*p != '&' && *p != '\0') {
+                if ((q - arg) < arg_size - 1) {
+                    if (*p == '+')
+                        *q++ = ' ';
+                    else
+                        *q++ = *p;
+                }
+                p++;
+            }
+        }
+        *q = '\0';
+        if (!strcmp(tag, tag1))
+            return 1;
+        if (*p != '&')
+            break;
+        p++;
+    }
+    return 0;
+}
+
 #ifdef TEST
 
 #undef printf
diff --git a/libavutil/parseutils.h b/libavutil/parseutils.h
index 517f125a63..c3986af20c 100644
--- a/libavutil/parseutils.h
+++ b/libavutil/parseutils.h
@@ -106,4 +106,12 @@ int av_parse_color(uint8_t *rgba_color, const char *color_string, int slen,
  */
 int av_parse_time(int64_t *timeval, const char *timestr, int duration);
 
+/**
+ * Attempt to find a specific tag in a URL.
+ *
+ * syntax: '?tag1=val1&tag2=val2...'. Little URL decoding is done.
+ * Return 1 if found.
+ */
+int av_find_info_tag(char *arg, int arg_size, const char *tag1, const char *info);
+
 #endif /* AVUTIL_PARSEUTILS_H */
-- 
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