Limit the number of extra/missing files that get printed.

win_toolchain/get_toolchain_if_necessary.py

Index: win_toolchain/get_toolchain_if_necessary.py
diff --git a/win_toolchain/get_toolchain_if_necessary.py b/win_toolchain/get_toolchain_if_necessary.py
index d7d20b820354009696bee0cdb6c17d49fbeba65b..4e676327e222c576152834f060351ae9a0336a99 100755
--- a/win_toolchain/get_toolchain_if_necessary.py
+++ b/win_toolchain/get_toolchain_if_necessary.py
@@ -140,16 +140,22 @@ def CalculateHash(root, expected_hash):
       timestamps_data_files.append(f[0])
     missing_files = [f for f in timestamps_data_files if f not in file_list]
     if len(missing_files):
-      print ('Some files are missing from the %s version of the toolchain:' %
-             expected_hash)
-      for f in missing_files:
-        print '\t%s' % f
+      print ('%d file%s missing from the %s version of the toolchain:' %
+             (len(missing_files), 's are' if len(missing_files) > 1 else '',

[Nico, 2016/06/23 15:53:45]

nit: i'd just say "%d files missing", it's not like this is user-facing ui

[Sébastien Marchand, 2016/06/23 15:57:51]

Done.

+              expected_hash))
+      for i in xrange(0, min(len(missing_files), 10)):
+        print '\t%s' % missing_files[i]
+      if len(missing_files) > 10:
+        print '\t...'
     extra_files = [f for f in file_list if f not in timestamps_data_files]
     if len(extra_files):
-      print ('There\'s some extra files in the %s version of the toolchain:' %
-             expected_hash)
-      for f in extra_files:
-        print '\t%s' % f
+      print ('There\'s %d extra file%s in the %s version of the toolchain:' %

[Nico, 2016/06/23 15:53:44]

same nit: drop "There's", and i'd always just say "files"

[Sébastien Marchand, 2016/06/23 15:57:51]

Done.

+             (len(extra_files), 's' if len(missing_files) > 1 else '',
+              expected_hash))
+      for i in xrange(0, min(len(extra_files), 10)):
+        print '\t%s' % extra_files[i]
+      if len(extra_files) > 10:
+        print '\t...'
   if matches:
     return timestamps_data['sha1']