Merge branch 'import-gh-wiki' into 'master'

Import GitHub wiki into GitLab

Closes #2834 

GitHub doesn’t apply any constraints to theirs wiki slug allowing chars like ,, :, *, etc, we need to remove our constraints or some wiki pages will not be available after they are imported.

Some wikis use the Gollum's tags to link its internal/external resources like: images, urls, wiki pages, etc. So, to avoid that wiki links/images displays completely broken after they were imported, we added a new `WikiPipeline`, that for now will parse only simple links, and image tags.

##### Before `WikiPipeline`:

![Screenshot_2016-01-11_20.14.48](/uploads/46fd5dbb5acfc70aa8ecca3050b675e4/Screenshot_2016-01-11_20.14.48.png)

##### After `WikiPipeline`:

![Screenshot_2016-01-11_20.15.56](/uploads/b1d94aa852f385f867a7868c358b4257/Screenshot_2016-01-11_20.15.56.png)

See merge request !2324

5 files changed, 23 insertions, 21 deletions

diff --git a/app/assets/javascripts/wikis.js.coffee b/app/assets/javascripts/wikis.js.coffee
index 81cfc37b956..19420f42468 100644
--- a/app/assets/javascripts/wikis.js.coffee
+++ b/app/assets/javascripts/wikis.js.coffee
@@ -1,17 +1,18 @@
+#= require latinise
+
 class @Wikis
   constructor: ->
-    $('.build-new-wiki').bind "click", (e) ->
-      $('[data-error~=slug]').addClass("hidden")
-      $('p.hint').show()
+    $('.build-new-wiki').bind 'click', (e) =>
+      $('[data-error~=slug]').addClass('hidden')
       field = $('#new_wiki_path')
-      valid_slug_pattern = /^[\w\/-]+$/
+      slug = @slugify(field.val())
 
-      slug = field.val()
-      if slug.match valid_slug_pattern
+      if (slug.length > 0)
         path = field.attr('data-wikis-path')
-        if(slug.length > 0)
-          location.href = path + "/" + slug
-      else
-        e.preventDefault()
-        $('p.hint').hide()
-        $('[data-error~=slug]').removeClass("hidden")
+        location.href = path + '/' + slug
+
+  dasherize: (value) ->
+    value.replace(/[_\s]+/g, '-')
+
+  slugify: (value) =>
+    @dasherize(value.trim().toLowerCase().latinise())
diff --git a/app/helpers/gitlab_markdown_helper.rb b/app/helpers/gitlab_markdown_helper.rb
index ca41657cec1..1a226252251 100644
--- a/app/helpers/gitlab_markdown_helper.rb
+++ b/app/helpers/gitlab_markdown_helper.rb
@@ -91,7 +91,7 @@ module GitlabMarkdownHelper
   def render_wiki_content(wiki_page)
     case wiki_page.format
     when :markdown
-      markdown(wiki_page.content)
+      markdown(wiki_page.content, pipeline: :wiki, project_wiki: @project_wiki)
     when :asciidoc
       asciidoc(wiki_page.content)
     else
diff --git a/app/models/project_wiki.rb b/app/models/project_wiki.rb
index b5fec38378b..8ce47495971 100644
--- a/app/models/project_wiki.rb
+++ b/app/models/project_wiki.rb
@@ -38,6 +38,10 @@ class ProjectWiki
     [Gitlab.config.gitlab.url, "/", path_with_namespace, ".git"].join('')
   end
 
+  def wiki_base_path
+    ["/", @project.path_with_namespace, "/wikis"].join('')
+  end
+
   # Returns the Gollum::Wiki object.
   def wiki
     @wiki ||= begin
diff --git a/app/models/wiki_page.rb b/app/models/wiki_page.rb
index e9413c34bae..2a65f0431c4 100644
--- a/app/models/wiki_page.rb
+++ b/app/models/wiki_page.rb
@@ -169,7 +169,7 @@ class WikiPage
   private
 
   def set_attributes
-    attributes[:slug] = @page.escaped_url_path
+    attributes[:slug] = @page.url_path
     attributes[:title] = @page.title
     attributes[:format] = @page.format
   end
diff --git a/app/views/projects/wikis/_new.html.haml b/app/views/projects/wikis/_new.html.haml
index f0547e9c057..53b37b1104e 100644
--- a/app/views/projects/wikis/_new.html.haml
+++ b/app/views/projects/wikis/_new.html.haml
@@ -5,12 +5,9 @@
         %a.close{href: "#", "data-dismiss" => "modal"} ×
         %h3.page-title New Wiki Page
       .modal-body
-        = label_tag :new_wiki_path do
-          %span Page slug
-        = text_field_tag :new_wiki_path, nil, placeholder: 'how-to-setup', class: 'form-control', required: true, :'data-wikis-path' => namespace_project_wikis_path(@project.namespace, @project)
-        %p.hidden.text-danger{data: { error: "slug" }}
-          The page slug is invalid. Please don't use characters other then: a-z 0-9 _ - and /
-        %p.hint
-          Please don't use spaces.
+        .form-group
+          = label_tag :new_wiki_path do
+            %span Page slug
+          = text_field_tag :new_wiki_path, nil, placeholder: 'how-to-setup', class: 'form-control', required: true, :'data-wikis-path' => namespace_project_wikis_path(@project.namespace, @project)
         .form-actions
           = link_to 'Create Page', '#', class: 'build-new-wiki btn btn-create'