emms-print-metadata.c: Don't segfault if argument doesn't exist.

darcs-hash:20060429185448-2189f-d25bfe8317afd3be16e5d2b4cb8c32b0724568e0.gz

1 files changed, 16 insertions, 0 deletions

diff --git a/emms-print-metadata.c b/emms-print-metadata.c
index 3157f46..9bf6352 100644
--- a/emms-print-metadata.c
+++ b/emms-print-metadata.c
@@ -35,8 +35,24 @@ main (int argc, char **argv)
     }
 
   file = taglib_file_new (argv[1]);
+
+  if (!file)
+    {
+      fprintf (stderr, "%s: File does not exist or is of an unknown type\n", argv[1]);
+      exit (1);
+    }
+
   tag = taglib_file_tag (file);
 
+  /* Apparently, if the file is named foo.mp3 or similar, the library
+     still can open it, for whatever reason.
+  */
+  if (!tag)
+    {
+      fprintf (stderr, "%s: File does not exist or is of an unknown type\n", argv[1]);
+      exit (1);
+    }
+
   printf ("info-artist=%s\n", taglib_tag_artist (tag));
   printf ("info-title=%s\n", taglib_tag_title (tag));
   printf ("info-album=%s\n", taglib_tag_album (tag));