avformat/utils: make av_url_split search for hashmark as well to separate hostname

RFC 3986 states that the generic syntax uses the slash ("/"), question mark
("?"), and number sign ("#") characters to delimit components that are
significant to the generic parser's hierarchical interpretation of an
identifier.

Signed-off-by: Marton Balint <cus@passwd.hu>

libavformat/tests/url.c

@@ -75,6 +75,7 @@ int main(void)
     test2("https://1l-lh.a.net/i/1LIVE_HDS@179577/master.m3u8");
     test2("ftp://u:p%2B%2F2@ftp.pbt.com/ExportHD.mpg");
     test2("https://key.dns.com?key_id=2&model_id=12345&&access_key=");
+    test2("http://example.com#tag");
 
     return 0;
 }

libavformat/utils.c

@@ -4786,7 +4786,7 @@ void av_url_split(char *proto, int proto_size,
                   char *hostname, int hostname_size,
                   int *port_ptr, char *path, int path_size, const char *url)
 {
-    const char *p, *ls, *ls2, *at, *at2, *col, *brk;
+    const char *p, *ls, *at, *at2, *col, *brk;
 
     if (port_ptr)
         *port_ptr = -1;
@@ -4814,16 +4814,8 @@ void av_url_split(char *proto, int proto_size,
     }
 
     /* separate path from hostname */
-    ls = strchr(p, '/');
-    ls2 = strchr(p, '?');
-    if (!ls)
-        ls = ls2;
-    else if (ls && ls2)
-        ls = FFMIN(ls, ls2);
-    if (ls)
-        av_strlcpy(path, ls, path_size);
-    else
-        ls = &p[strlen(p)];  // XXX
+    ls = p + strcspn(p, "/?#");
+    av_strlcpy(path, ls, path_size);
 
     /* the rest is hostname, use that to parse auth/port */
     if (ls != p) {

tests/ref/fate/url

@@ -22,3 +22,4 @@ http://server/foo/bar?param=value/with/slashes               => http
 https://1l-lh.a.net/i/1LIVE_HDS@179577/master.m3u8           => https                           1l-lh.a.net        -1 /i/1LIVE_HDS@179577/master.m3u8
 ftp://u:p%2B%2F2@ftp.pbt.com/ExportHD.mpg                    => ftp             u:p%2B%2F2      ftp.pbt.com        -1 /ExportHD.mpg
 https://key.dns.com?key_id=2&model_id=12345&&access_key=     => https                           key.dns.com        -1 ?key_id=2&model_id=12345&&access_key=
+http://example.com#tag                                       => http                            example.com        -1 #tag