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require 'gitlab/markdown'
module Gitlab
module Markdown
# HTML filter that replaces commit references with links.
#
# This filter supports cross-project references.
class CommitReferenceFilter < ReferenceFilter
include CrossProjectReference
# Public: Find commit references in text
#
# CommitReferenceFilter.references_in(text) do |match, commit, project_ref|
# "<a href=...>#{commit}</a>"
# end
#
# text - String text to search.
#
# Yields the String match, the String commit identifier, and an optional
# String of the external project reference.
#
# Returns a String replaced with the return of the block.
def self.references_in(text)
text.gsub(Commit.reference_pattern) do |match|
yield match, $~[:commit], $~[:project]
end
end
def self.referenced_by(node)
project = Project.find(node.attr("data-project")) rescue nil
return unless project
id = node.attr("data-commit")
commit = commit_from_ref(project, id)
return unless commit
{ commit: commit }
end
def call
replace_text_nodes_matching(Commit.reference_pattern) do |content|
commit_link_filter(content)
end
end
# Replace commit references in text with links to the commit specified.
#
# text - String text to replace references in.
#
# Returns a String with commit references replaced with links. All links
# have `gfm` and `gfm-commit` class names attached for styling.
def commit_link_filter(text)
self.class.references_in(text) do |match, id, project_ref|
project = self.project_from_ref(project_ref)
if commit = self.class.commit_from_ref(project, id)
url = url_for_commit(project, commit)
title = escape_once(commit.link_title)
klass = reference_class(:commit)
data = data_attribute(project: project.id, commit: id)
project_ref += '@' if project_ref
%(<a href="#{url}" #{data}
title="#{title}"
class="#{klass}">#{project_ref}#{commit.short_id}</a>)
else
match
end
end
end
def self.commit_from_ref(project, id)
if project && project.valid_repo?
project.commit(id)
end
end
def url_for_commit(project, commit)
h = Gitlab::Application.routes.url_helpers
h.namespace_project_commit_url(project.namespace, project, commit,
only_path: context[:only_path])
end
end
end
end
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