Mercurial > hg > octave-image

changeset 605:764d78294156

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
readexif: check input and proper error check after fopen
author carandraug
date Mon, 24 Sep 2012 13:55:19 +0000
parents b45189bda253
children 20f20769cd9f
files inst/readexif.m
diffstat 1 files changed, 6 insertions(+), 2 deletions(-) [+]
line wrap: on
line diff
--- a/inst/readexif.m
+++ b/inst/readexif.m
@@ -36,13 +36,17 @@
 
 function exif = readexif(file, thumbnail)
 
+  if (nargin < 1 || nargin > 2)
+    print_usage;
+  endif
+
   % Enable the debug flag to see more of the JPG sections.
 
   debug = false;
 
-  in = fopen(file);
+  [in, msg] = fopen(file);
   if (in<0)
-    error('File "%s" not found !', file);
+    error ("readexif: could not open `%s': %s", file, msg);
   end
 
   s = fread(in, 1, 'uint16', 'ieee-be');