libxml-2.9.2 compatibility

Author: weltling

ext/libxml/libxml.c

@@ -306,6 +306,21 @@ static void *php_libxml_streams_IO_open_wrapper(const char *filename, const char
 			(xmlStrncmp(BAD_CAST uri->scheme, BAD_CAST "file", 4) == 0))) {
 		resolved_path = xmlURIUnescapeString(filename, 0, NULL);
 		isescaped = 1;
+#if LIBXML_VERSION >= 20902 && defined(PHP_WIN32)
+		/* Libxml 2.9.2 prefixes local paths with file:/ instead of file://,
+			thus the php stream wrapper will fail on a valid case. For this
+			reason the prefix is rather better cut off. */
+		{
+			size_t pre_len = sizeof("file:/") - 1;
+
+			if (strncasecmp(resolved_path, "file:/", pre_len) == 0
+				&& '/' != resolved_path[pre_len]) {
+				xmlChar *tmp = xmlStrdup(resolved_path + pre_len);
+				xmlFree(resolved_path);
+				resolved_path = tmp;
+			}
+		}
+#endif
 	} else {
 		resolved_path = (char *)filename;
 	}