diff options
author | Reuben Pereira <reuben453@gmail.com> | 2018-06-30 12:17:03 +0300 |
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committer | Reuben Pereira <reuben453@gmail.com> | 2018-06-30 12:17:03 +0300 |
commit | c0dfaf98ac60fc928a2df5f7f355b262f0fcaf91 (patch) | |
tree | 60be7b83df35ec979bf890b52e63053e2c57c075 /lib/banzai | |
parent | 3a3233a5b9e4be15bedd9004c8520475fd38f5c5 (diff) |
A working implementation of a project reference filter which links project references to project profile.
Diffstat (limited to 'lib/banzai')
-rw-r--r-- | lib/banzai/filter/project_reference_filter.rb | 114 | ||||
-rw-r--r-- | lib/banzai/pipeline/gfm_pipeline.rb | 1 | ||||
-rw-r--r-- | lib/banzai/reference_parser/project_parser.rb | 17 |
3 files changed, 132 insertions, 0 deletions
diff --git a/lib/banzai/filter/project_reference_filter.rb b/lib/banzai/filter/project_reference_filter.rb new file mode 100644 index 00000000000..ed69f7eae92 --- /dev/null +++ b/lib/banzai/filter/project_reference_filter.rb @@ -0,0 +1,114 @@ +module Banzai + module Filter + # HTML filter that replaces project references with links. + class ProjectReferenceFilter < ReferenceFilter + self.reference_type = :project + + # Public: Find `project>` project references in text + # + # ProjectReferenceFilter.references_in(text) do |match, project| + # "<a href=...>#{project}></a>" + # end + # + # text - String text to search. + # + # Yields the String match, and the String project name. + # + # Returns a String replaced with the return of the block. + def self.references_in(text) + text.gsub(Project.markdown_reference_pattern) do |match| + yield match, "#{$~[:namespace]}/#{$~[:project]}" + end + end + + def call + ref_pattern = Project.markdown_reference_pattern + ref_pattern_start = /\A#{ref_pattern}\z/ + + nodes.each do |node| + if text_node?(node) + replace_text_when_pattern_matches(node, ref_pattern) do |content| + project_link_filter(content) + end + elsif element_node?(node) + yield_valid_link(node) do |link, inner_html| + if link =~ ref_pattern_start + replace_link_node_with_href(node, link) do + project_link_filter(link, link_content: inner_html) + end + end + end + end + end + + doc + end + + # Replace `project>` project references in text with links to the referenced + # project page. + # + # text - String text to replace references in. + # link_content - Original content of the link being replaced. + # + # Returns a String with `project>` references replaced with links. All links + # have `gfm` and `gfm-project` class names attached for styling. + def project_link_filter(text, link_content: nil) + self.class.references_in(text) do |match, project_name| + cached_call(:banzai_url_for_object, match, path: [Project, project_name.downcase]) do + if project = projects_hash[project_name.downcase] + link_to_project(project, link_content: link_content) || match + else + match + end + end + end + end + + # Returns a Hash containing all Namespace objects for the project + # references in the current document. + # + # The keys of this Hash are the namespace paths, the values the + # corresponding Namespace objects. + def projects_hash + @projects ||= Project.where_full_path_in(projects) + .index_by(&:full_path) + .transform_keys(&:downcase) + end + + # Returns all projects referenced in the current document. + def projects + refs = Set.new + + nodes.each do |node| + node.to_html.scan(Project.markdown_reference_pattern) do + refs << "#{$~[:namespace]}/#{$~[:project]}" + end + end + + refs.to_a + end + + private + + def urls + Gitlab::Routing.url_helpers + end + + def link_class + reference_class(:project) + end + + def link_to_project(project, link_content: nil) + url = urls.project_url(project, only_path: context[:only_path]) + data = data_attribute(project: project.id) + content = link_content || project.full_path + Project.reference_postfix + + link_tag(url, data, content, project.name) + end + + def link_tag(url, data, link_content, title) + %(<a href="#{url}" #{data} class="#{link_class}" title="#{escape_once(title)}">#{link_content}</a>) + end + end + end +end diff --git a/lib/banzai/pipeline/gfm_pipeline.rb b/lib/banzai/pipeline/gfm_pipeline.rb index 0d9b874ef85..9295ca9efcc 100644 --- a/lib/banzai/pipeline/gfm_pipeline.rb +++ b/lib/banzai/pipeline/gfm_pipeline.rb @@ -25,6 +25,7 @@ module Banzai Filter::ExternalLinkFilter, Filter::UserReferenceFilter, + Filter::ProjectReferenceFilter, Filter::IssueReferenceFilter, Filter::ExternalIssueReferenceFilter, Filter::MergeRequestReferenceFilter, diff --git a/lib/banzai/reference_parser/project_parser.rb b/lib/banzai/reference_parser/project_parser.rb new file mode 100644 index 00000000000..54fd3c38a85 --- /dev/null +++ b/lib/banzai/reference_parser/project_parser.rb @@ -0,0 +1,17 @@ +module Banzai + module ReferenceParser + class ProjectParser < BaseParser + self.reference_type = :project + + def references_relation + Project + end + + private + + def can_read_reference?(user, ref_project, node) + can?(user, :read_project, ref_project) + end + end + end +end |