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require 'banzai'
module Banzai
module Filter
# HTML filter that replaces external issue tracker references with links.
# References are ignored if the project doesn't use an external issue
# tracker.
class ExternalIssueReferenceFilter < ReferenceFilter
# Public: Find `JIRA-123` issue references in text
#
# ExternalIssueReferenceFilter.references_in(text) do |match, issue|
# "<a href=...>##{issue}</a>"
# end
#
# text - String text to search.
#
# Yields the String match and the String issue reference.
#
# Returns a String replaced with the return of the block.
def self.references_in(text)
text.gsub(ExternalIssue.reference_pattern) do |match|
yield match, $~[:issue]
end
end
def self.referenced_by(node)
project = Project.find(node.attr("data-project")) rescue nil
return unless project
id = node.attr("data-external-issue")
external_issue = ExternalIssue.new(id, project)
return unless external_issue
{ external_issue: external_issue }
end
def call
# Early return if the project isn't using an external tracker
return doc if project.nil? || project.default_issues_tracker?
replace_text_nodes_matching(ExternalIssue.reference_pattern) do |content|
issue_link_filter(content)
end
replace_link_nodes_with_href(ExternalIssue.reference_pattern) do |link, text|
issue_link_filter(link, link_text: text)
end
end
# Replace `JIRA-123` issue references in text with links to the referenced
# issue's details page.
#
# text - String text to replace references in.
#
# Returns a String with `JIRA-123` references replaced with links. All
# links have `gfm` and `gfm-issue` class names attached for styling.
def issue_link_filter(text, link_text: nil)
project = context[:project]
self.class.references_in(text) do |match, id|
ExternalIssue.new(id, project)
url = url_for_issue(id, project, only_path: context[:only_path])
title = "Issue in #{project.external_issue_tracker.title}"
klass = reference_class(:issue)
data = data_attribute(project: project.id, external_issue: id)
text = link_text || match
%(<a href="#{url}" #{data}
title="#{escape_once(title)}"
class="#{klass}">#{escape_once(text)}</a>)
end
end
def url_for_issue(*args)
IssuesHelper.url_for_issue(*args)
end
end
end
end
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