stream_filter/httplive.c: Also check for empty lines.

Do not treat an empty line as a HLS segment.

modules/stream_filter/httplive.c

@@ -138,6 +138,7 @@ static int  Control(stream_t *, int i_query, va_list);
 static ssize_t read_M3U8(stream_t *s, vlc_url_t *url, uint8_t **buffer);
 static ssize_t ReadM3U8(stream_t *s, uint8_t **buffer);
 static char *ReadLine(uint8_t *buffer, uint8_t **pos, size_t len);
+static char *SkipWhiteSpace(char *buffer, const size_t len);
 
 static int hls_Download(stream_t *s, segment_t *segment);
 
@@ -940,8 +941,15 @@ static int parse_M3U8(stream_t *s, vlc_array_t *streams, uint8_t *buffer, const
                 err = parse_EndList(s, hls);
             else if (strncmp(line, "#", 1) != 0)
             {
-                err = parse_AddSegment(s, hls, segment_duration, line);
-                segment_duration = -1; /* reset duration */
+                char *tmp = SkipWhiteSpace(line, strlen(line));
+                if (tmp)
+                {
+                    free(line);
+                    line = tmp;
+                    err = parse_AddSegment(s, hls, segment_duration, line);
+                    segment_duration = -1; /* reset duration */
+                }
+                else err = VLC_SUCCESS;
             }
 
             free(line);
@@ -1519,6 +1527,34 @@ static char *ReadLine(uint8_t *buffer, uint8_t **pos, const size_t len)
     return line;
 }
 
+static char *SkipWhiteSpace(char *buffer, const size_t len)
+{
+    assert(buffer);
+
+    char *line = NULL;
+    uint8_t *begin = buffer;
+    uint8_t *p = begin;
+    uint8_t *end = p + len;
+
+    while (p < end)
+    {
+        if ((*p != '\t') || (*p != ' ') || (*p != '\0'))
+            break;
+        p++;
+    }
+
+    /* copy line excluding '\t', ' ' or '\0' */
+    line = strndup((char *)begin, p - begin);
+
+    if (*p != '\0')
+    {
+        /* next pass start after '\t' or ' ' */
+        p++;
+    }
+
+    return line;
+}
+
 /****************************************************************************
  * Open
  ****************************************************************************/