rar: + Support for up to 1001 volume old naming style archive.

(cherry picked from commit 0ba86c3412976f39dc45caf11c64e2d8168aea42)
Signed-off-by: Jean-Baptiste Kempf <jb@videolan.org>

modules/access/rar/rar.c

@@ -286,7 +286,7 @@ static const rar_pattern_t *FindVolumePattern(const char *location)
         { ".part1.rar",   "%s.part%.1d.rar", 2,   9 },
         { ".part01.rar",  "%s.part%.2d.rar", 2,  99, },
         { ".part001.rar", "%s.part%.3d.rar", 2, 999 },
-        { ".rar",         "%s.r%.2d",        0,  99 },
+        { ".rar",         "%s.%c%.2d",       0, 999 },
         { NULL, NULL, 0, 0 },
     };
 
@@ -376,8 +376,14 @@ int RarParse(stream_t *s, int *count, rar_file_t ***file)
         }
 
         free(volume_mrl);
-        if (asprintf(&volume_mrl, pattern->format, volume_base, volume_index) < 0)
-            volume_mrl = NULL;
+        if (pattern->start) {
+            if (asprintf(&volume_mrl, pattern->format, volume_base, volume_index) < 0)
+                volume_mrl = NULL;
+        } else {
+            if (asprintf(&volume_mrl, pattern->format, volume_base,
+                         'r' + volume_index / 100, volume_index % 100) < 0)
+                volume_mrl = NULL;
+        }
         free(volume_base);
 
         if (!volume_mrl)