Do not compute checksums when only one file has a given size.

1 files changed, 20 insertions, 13 deletions

diff --git a/dupfiles b/dupfiles
index be36f0c..cc1ff47 100755
--- a/dupfiles
+++ b/dupfiles
@@ -81,22 +81,29 @@ class DuplicateFileFinder(object):
         done_files = 0
         result = []
         for tuples in self.by_size.itervalues():
-            by_checksum = dict()
-            for dev, ino, pathname in tuples:
-                checksum = self.file_checksum(pathname)
-                if checksum not in by_checksum:
-                    by_checksum[checksum] = set()
-                by_checksum[checksum].add(pathname)
-            for names in by_checksum.itervalues():
-                if len(names) > 1:
-                    result.append(names)
-                done_files += len(names)
-                self.progress.write('%d/%d (%.1f%%) files done' %
-                                    (done_files, total_files, 
-                                     100.0 * float(done_files) / total_files))
+            if len(tuples) > 1:
+                by_checksum = dict()
+                for dev, ino, pathname in tuples:
+                    checksum = self.file_checksum(pathname)
+                    if checksum not in by_checksum:
+                        by_checksum[checksum] = set()
+                    by_checksum[checksum].add(pathname)
+                    done_files += 1
+                    self.duplicates_progress(done_files, total_files)
+                for names in by_checksum.itervalues():
+                    if len(names) > 1:
+                        result.append(names)
+            else:
+                done_files += 1
+                self.duplicates_progress(done_files, total_files)
         self.progress.finished()
         return result
 
+    def duplicates_progress(self, done_files, total_files):
+        self.progress.write('%d/%d (%.1f%%) files done' %
+                            (done_files, total_files, 
+                                100.0 * float(done_files) / total_files))
+
     def file_checksum(self, pathname):
         return hashlib.md5(file(pathname, 'rb').read()).digest()