PrettyPatch should handle "delta" patch mechanism in git binary patches

https://bugs.webkit.org/show_bug.cgi?id=67628

Git patches are encoded using two mechanisms - "literal" and "delta".
See this email from the git mailing list archive for info
http://marc.info/?l=git&m=114682417113315&w=2

When determining if a binary file patch is an image or not we should accept
both literal and delta patch encodings.

Patch by Ben Wells <benwells@chromium.org> on 2011-09-06
Reviewed by Shinichiro Hamaji.

* PrettyPatch/PrettyPatch.rb:
* PrettyPatch/PrettyPatch_test.rb:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@94554 268f45cc-cd09-0410-ab3c-d52691b4dbfc

diff --git a/Websites/bugs.webkit.org/ChangeLog b/Websites/bugs.webkit.org/ChangeLog
index 5cc1b33..261dba8 100644 (file)
--- a/Websites/bugs.webkit.org/ChangeLog
+++ b/Websites/bugs.webkit.org/ChangeLog
@@ -1,3 +1,20 @@
+2011-09-06  Ben Wells  <benwells@chromium.org>
+
+        PrettyPatch should handle "delta" patch mechanism in git binary patches
+        https://bugs.webkit.org/show_bug.cgi?id=67628
+
+        Git patches are encoded using two mechanisms - "literal" and "delta".
+        See this email from the git mailing list archive for info
+        http://marc.info/?l=git&m=114682417113315&w=2
+
+        When determining if a binary file patch is an image or not we should accept
+        both literal and delta patch encodings.
+
+        Reviewed by Shinichiro Hamaji.
+
+        * PrettyPatch/PrettyPatch.rb:
+        * PrettyPatch/PrettyPatch_test.rb:
+
 2011-06-30  Adam Barth  <abarth@webkit.org>
 
         Reviewed by Eric Seidel.

diff --git a/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch.rb b/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch.rb
index 4652551..1ad120d 100644 (file)
--- a/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch.rb
+++ b/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch.rb
@@ -13,7 +13,7 @@ public
 
     def self.prettify(string)
         $last_prettify_file_count = -1
-        $last_prettify_part_count = { "remove" => 0, "add" => 0, "shared" => 0 }
+        $last_prettify_part_count = { "remove" => 0, "add" => 0, "shared" => 0, "binary" => 0 }
         string = normalize_line_ending(string)
         fileDiffs = FileDiff.parse(string)
 
@@ -65,7 +65,7 @@ private
 
     GIT_BINARY_FILE_MARKER_FORMAT = /^GIT binary patch$/
 
-    GIT_LITERAL_FORMAT = /^literal \d+$/
+    GIT_BINARY_PATCH_FORMAT = /^(literal|delta) \d+$/
 
     START_OF_BINARY_DATA_FORMAT = /^[0-9a-zA-Z\+\/=]{20,}/ # Assume 20 chars without a space is base64 binary data.
 
@@ -508,7 +508,7 @@ EOF
                     @git_indexes = [$1, $2]
                 when GIT_BINARY_FILE_MARKER_FORMAT
                     @binary = true
-                    if (GIT_LITERAL_FORMAT.match(lines[i + 1]) and PrettyPatch.has_image_suffix(@filename)) then
+                    if (GIT_BINARY_PATCH_FORMAT.match(lines[i + 1]) and PrettyPatch.has_image_suffix(@filename)) then
                         @git_image = true
                         startOfSections = i + 1
                     end
@@ -585,6 +585,7 @@ EOF
                     end
                 end
             elsif @binary then
+                $last_prettify_part_count["binary"] += 1
                 str += "<span class='text'>Binary file, nothing to see here</span>"
             else
                 str += @sections.collect{ |section| section.to_html }.join("<br>\n") unless @sections.nil?

diff --git a/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch_test.rb b/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch_test.rb
index 8b714cb..d3387cf 100755 (executable)
--- a/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch_test.rb
+++ b/Websites/bugs.webkit.org/PrettyPatch/PrettyPatch_test.rb
@@ -26,6 +26,7 @@ class PrettyPatch_test < Test::Unit::TestCase
         80852 => ["Changes one line plus ChangeLog", 2, 2, 1, 4],
         83127 => ["Only add stuff", 2, 2, 0, 3],
         85071 => ["Adds and removes from a file plus git signature", 2, 5, 3, 9],
+        104633 => ["Delta mechanism for binary patch in git diff", 12, 3, 5, 3],
     }
 
     def get_patch_uri(id)
@@ -57,6 +58,7 @@ class PrettyPatch_test < Test::Unit::TestCase
         assert_equal(info[Info::ADD], $last_prettify_part_count["add"], "Wrong number of 'add' parts in " + description)
         assert_equal(info[Info::REMOVE], $last_prettify_part_count["remove"], "Wrong number of 'remove' parts in " + description)
         assert_equal(info[Info::SHARED], $last_prettify_part_count["shared"], "Wrong number of 'shared' parts in " + description)
+        assert_equal(0, $last_prettify_part_count["binary"], "Wrong number of 'binary' parts in " + description)
     end
 
     def test_patches