scan-view tweak

 - Require index.html in provided results directory.

llvm-svn: 56423

1 files changed, 6 insertions, 1 deletions

diff --git a/clang/tools/scan-view/scan-view b/clang/tools/scan-view/scan-view
index d12c251f8be..e005a26b40f 100755
--- a/clang/tools/scan-view/scan-view
+++ b/clang/tools/scan-view/scan-view
@@ -4,6 +4,7 @@
 """
 
 import sys
+import posixpath
 import thread
 import time
 import urllib
@@ -85,9 +86,13 @@ def  main():
     (options, args) = parser.parse_args()
 
     if len(args) != 1:
-        parser.error('invalid number of arguments.')
+        parser.error('No results directory specified.')
     root, = args
 
+    # Make sure this directory is in a reasonable state to view.
+    if not posixpath.exists(posixpath.join(root,'index.html')):
+        parser.error('Invalid directory, analysis results not found!')
+
     # Kick off thread to wait for server and start web browser, if
     # requested.
     if options.startBrowser: