[PATCH] D26287: clang-format: Use git-ls-tree to get file mode in diff mode

[Stephen Hines via cfe-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL286212: clang-format: Use git-ls-tree to get file mode in diff mode (authored by srhines).

Changed prior to commit:
  https://reviews.llvm.org/D26287?vs=76878&id=77142#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D26287

Files:
  cfe/trunk/tools/clang-format/git-clang-format


Index: cfe/trunk/tools/clang-format/git-clang-format
===================================================================
--- cfe/trunk/tools/clang-format/git-clang-format
+++ cfe/trunk/tools/clang-format/git-clang-format
@@ -346,7 +346,16 @@
   Returns the object ID (SHA-1) of the created tree."""
   def index_info_generator():
     for filename, line_ranges in changed_lines.iteritems():
-      mode = oct(os.stat(filename).st_mode)
+      if revision:
+        git_metadata_cmd = ['git', 'ls-tree',
+                            '%s:%s' % (revision, os.path.dirname(filename)),
+                            os.path.basename(filename)]
+        git_metadata = subprocess.Popen(git_metadata_cmd, stdin=subprocess.PIPE,
+                                        stdout=subprocess.PIPE)
+        stdout = git_metadata.communicate()[0]
+        mode = oct(int(stdout.split()[0], 8))
+      else:
+        mode = oct(os.stat(filename).st_mode)
       blob_id = clang_format_to_blob(filename, line_ranges,
                                      revision=revision,
                                      binary=binary,


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