Add support for ref and path to commits filtering

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

app/controllers/projects/commits_controller.rb

@@ -13,7 +13,7 @@ class Projects::CommitsController < Projects::ApplicationController
 
     @commits =
       if search.present?
-        @repository.find_commits_by_message(search).compact
+        @repository.find_commits_by_message(search, @ref, @path, @limit, @offset).compact
       else
         @repository.commits(@ref, @path, @limit, @offset)
       end

app/models/repository.rb

@@ -92,9 +92,12 @@ class Repository
     commits
   end
 
-  def find_commits_by_message(query)
+  def find_commits_by_message(query, ref = nil, path = nil, limit = 1000, offset = 0)
+    ref ||= root_ref
+
     # Limited to 1000 commits for now, could be parameterized?
-    args = %W(#{Gitlab.config.git.bin_path} log --pretty=%H --max-count 1000 --grep=#{query})
+    args = %W(#{Gitlab.config.git.bin_path} log #{ref} --pretty=%H --skip #{offset} --max-count #{limit} --grep=#{query})
+    args = args.concat(%W(-- #{path})) if path.present?
 
     git_log_results = Gitlab::Popen.popen(args, path_to_repo).first.lines.map(&:chomp)
     commits = git_log_results.map { |c| commit(c) }

app/views/projects/commits/show.html.haml

@@ -18,7 +18,7 @@
           Create Merge Request
 
     .pull-left.prepend-left-10
-      = form_tag(namespace_project_commits_path(@project.namespace, @project, @ref), method: :get, class: 'pull-left commits-search-form') do
+      = form_tag(namespace_project_commits_path(@project.namespace, @project, @id), method: :get, class: 'pull-left commits-search-form') do
         = search_field_tag :search, params[:search], { placeholder: 'Filter by commit message', id: 'commits-search', class: 'form-control search-text-input', spellcheck: false }
 
     - if current_user && current_user.private_token