Provide better error messages when grit fails to open a file while

flattening.

BUG=70185

Review URL: http://codereview.chromium.org/6401001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@72853 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 2 deletions

diff --git a/tools/grit/grit/format/html_inline.py b/tools/grit/grit/format/html_inline.py
index c5cb074..b8b9c01 100755
--- a/tools/grit/grit/format/html_inline.py
+++ b/tools/grit/grit/format/html_inline.py
@@ -222,7 +222,11 @@ def InlineToString(input_filename, grd_node):
   Returns:
     the inlined data as a string
   """
-  return DoInline(input_filename, grd_node).inlined_data
+  try:
+    return DoInline(input_filename, grd_node).inlined_data
+  except IOError, e:
+    raise Exception("Failed to open %s while trying to flatten %s. (%s)" %
+                    (e.filename, input_filename, e.strerror))
 
 
 def InlineToFile(input_filename, output_filename, grd_node):
@@ -247,7 +251,11 @@ def InlineToFile(input_filename, output_filename, grd_node):
 
 def GetResourceFilenames(filename):
   """For a grd file, returns a set of all the files that would be inline."""
-  return DoInline(filename, None).inlined_files
+  try:
+    return DoInline(filename, None).inlined_files
+  except IOError, e:
+    raise Exception("Failed to open %s while trying to flatten %s. (%s)" %
+                    (e.filename, filename, e.strerror))
 
 
 def main():