Backend for a gitignores dropdown

5 files changed, 132 insertions, 0 deletions

diff --git a/lib/api/api.rb b/lib/api/api.rb
index 360fb41a721..6cd909f6115 100644
--- a/lib/api/api.rb
+++ b/lib/api/api.rb
@@ -58,5 +58,6 @@ module API
     mount ::API::Runners
     mount ::API::Licenses
     mount ::API::Subscriptions
+    mount ::API::Gitignores
   end
 end
diff --git a/lib/api/entities.rb b/lib/api/entities.rb
index 8298e3ad34c..31491cf31dd 100644
--- a/lib/api/entities.rb
+++ b/lib/api/entities.rb
@@ -457,5 +457,13 @@ module API
       expose(:limitations) { |license| license.meta['limitations'] }
       expose :content
     end
+
+    class GitignoresList < Grape::Entity
+      expose :name
+    end
+
+    class Gitignore < Grape::Entity
+      expose :name, :content
+    end
   end
 end
diff --git a/lib/api/gitignores.rb b/lib/api/gitignores.rb
new file mode 100644
index 00000000000..1af9ba6b316
--- /dev/null
+++ b/lib/api/gitignores.rb
@@ -0,0 +1,29 @@
+module API
+  class Gitignores < Grape::API
+
+    # Get the list of the available gitignore templates
+    #
+    # Example Request:
+    #   GET /gitignores
+    get 'gitignores' do
+      present Gitlab::Gitignore.all, with: Entities::GitignoresList
+    end
+
+    # Get the text for a specific gitignore
+    #
+    # Parameters:
+    #   key (required) - The key of a license
+    #
+    # Example Request:
+    #   GET /gitignores/elixir
+    #
+    get 'gitignores/:key' do
+      required_attributes! [:key]
+
+      gitignore = Gitlab::Gitignore.find(params[:key])
+      not_found!('.gitignore') unless gitignore
+
+      present gitignore, with: Entities::Gitignore
+    end
+  end
+end
diff --git a/lib/gitlab/gitignore.rb b/lib/gitlab/gitignore.rb
new file mode 100644
index 00000000000..a2de2831e38
--- /dev/null
+++ b/lib/gitlab/gitignore.rb
@@ -0,0 +1,68 @@
+module Gitlab
+  class Gitignore
+    FILTER_REGEX = /\.gitignore\z/.freeze
+
+    attr_accessor :name, :directory
+
+    def initialize(name, directory)
+      @name       = name
+      @directory  = directory
+    end
+
+    def content
+      File.read(path)
+    end
+
+    class << self
+      def all
+        languages_frameworks + global
+      end
+
+      def find(key)
+        file_name = "#{key}.gitignore"
+
+        directory = select_directory(file_name)
+        directory ? new(key, directory) : nil
+      end
+
+      def global
+        files_for_folder(global_dir).map { |f| new(f, global_dir) }
+      end
+
+      def languages_frameworks
+        files_for_folder(gitignore_dir).map { |f| new(f, gitignore_dir) }
+      end
+    end
+
+    private
+
+    def path
+      File.expand_path("#{name}.gitignore", directory)
+    end
+
+    class << self
+      def select_directory(file_name)
+        [self.gitignore_dir, self.global_dir].find { |dir| File.exist?(File.expand_path(file_name, dir)) }
+      end
+
+      def global_dir
+        File.expand_path('Global', gitignore_dir)
+      end
+
+      def gitignore_dir
+        File.expand_path('vendor/gitignore', Rails.root)
+      end
+
+      def files_for_folder(dir)
+        gitignores = []
+        Dir.entries(dir).each do |e|
+          next unless e.end_with?('.gitignore')
+
+          gitignores << e.gsub(FILTER_REGEX, '')
+        end
+
+        gitignores
+      end
+    end
+  end
+end
diff --git a/lib/tasks/gitlab/update_gitignore.rake b/lib/tasks/gitlab/update_gitignore.rake
new file mode 100644
index 00000000000..61cbfd6737d
--- /dev/null
+++ b/lib/tasks/gitlab/update_gitignore.rake
@@ -0,0 +1,26 @@
+namespace :gitlab do
+  desc "GitLab | Update gitignore"
+  task :update_gitignore do
+    dir = File.expand_path('vendor', Rails.root)
+    FileUtils.cd(dir)
+
+    dir = File.expand_path('gitignore', dir)
+    clone_gitignores(dir)
+    remove_unneeded_files(dir)
+
+    puts "Done".green
+  end
+
+  def clone_gitignores(dir)
+    FileUtils.rm_rf(dir) if Dir.exist?(dir)
+    system('git clone --depth=1 --branch=master https://github.com/github/gitignore.git')
+  end
+
+  def remove_unneeded_files(dir)
+    [File.expand_path('Global', dir), dir].each do |path|
+      Dir.entries(path).reject { |e| e =~ /(\.{1,2}|Global|\.gitignore)\z/ }.each do |file|
+        FileUtils.rm_rf File.expand_path(file, path)
+      end
+    end
+  end
+end