Add Commit#to_diff for raw diff

Riyad Preukschas
1 parent 8b401039
Showing 1 changed file with 15 additions and 0 deletions Show diff stats
app/models/commit.rb
@@ -150,4 +150,19 @@ class Commit
   def parents_count
     parents && parents.count || 0
   end
+
+  # Shows the diff between the commit's parent and the commit.
+  #
+  # Cuts out the header and stats from #to_patch and returns only the diff.
+  def to_diff
+    # see Grit::Commit#show
+    patch = to_patch
+
+    # discard lines before the diff
+    lines = patch.split("\n")
+    while !lines.first.start_with?("diff --git") do
+      lines.shift
+    end
+    lines.join("\n")
+  end
 end
	@@ -150,4 +150,19 @@ class Commit		@@ -150,4 +150,19 @@ class Commit
150	def parents_count	150	def parents_count
151	parents && parents.count \|\| 0	151	parents && parents.count \|\| 0
152	end	152	end
		153	+
		154	+ # Shows the diff between the commit's parent and the commit.
		155	+ #
		156	+ # Cuts out the header and stats from #to_patch and returns only the diff.
		157	+ def to_diff
		158	+ # see Grit::Commit#show
		159	+ patch = to_patch
		160	+
		161	+ # discard lines before the diff
		162	+ lines = patch.split("\n")
		163	+ while !lines.first.start_with?("diff --git") do
		164	+ lines.shift
		165	+ end
		166	+ lines.join("\n")
		167	+ end
153	end	168	end