2015-12-23 02:04:40 +05:30
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module Banzai
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module Filter
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2015-09-11 14:41:01 +05:30
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# HTML filter that replaces user or group references with links.
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#
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# A special `@all` reference is also supported.
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class UserReferenceFilter < ReferenceFilter
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self.reference_type = :user
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# Public: Find `@user` user references in text
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#
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# UserReferenceFilter.references_in(text) do |match, username|
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# "<a href=...>@#{user}</a>"
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# end
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#
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# text - String text to search.
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#
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# Yields the String match, and the String user name.
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#
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# Returns a String replaced with the return of the block.
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def self.references_in(text)
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text.gsub(User.reference_pattern) do |match|
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yield match, $~[:user]
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end
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end
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def call
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return doc if project.nil? && !skip_project_check?
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ref_pattern = User.reference_pattern
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ref_pattern_start = /\A#{ref_pattern}\z/
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nodes.each do |node|
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if text_node?(node)
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replace_text_when_pattern_matches(node, ref_pattern) do |content|
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user_link_filter(content)
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end
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elsif element_node?(node)
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yield_valid_link(node) do |link, inner_html|
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if link =~ ref_pattern_start
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replace_link_node_with_href(node, link) do
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user_link_filter(link, link_content: inner_html)
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end
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end
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end
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end
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end
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doc
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2015-09-11 14:41:01 +05:30
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end
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# Replace `@user` user references in text with links to the referenced
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# user's profile page.
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#
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# text - String text to replace references in.
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# link_content - Original content of the link being replaced.
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#
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# Returns a String with `@user` references replaced with links. All links
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# have `gfm` and `gfm-project_member` class names attached for styling.
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def user_link_filter(text, link_content: nil)
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self.class.references_in(text) do |match, username|
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if username == 'all' && !skip_project_check?
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link_to_all(link_content: link_content)
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elsif namespace = namespaces[username.downcase]
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link_to_namespace(namespace, link_content: link_content) || match
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else
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match
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end
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end
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end
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# Returns a Hash containing all Namespace objects for the username
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# references in the current document.
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#
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# The keys of this Hash are the namespace paths, the values the
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# corresponding Namespace objects.
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def namespaces
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@namespaces ||= Namespace.where_full_path_in(usernames).index_by(&:full_path).transform_keys(&:downcase)
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end
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# Returns all usernames referenced in the current document.
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def usernames
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refs = Set.new
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nodes.each do |node|
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node.to_html.scan(User.reference_pattern) do
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refs << $~[:user]
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end
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end
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refs.to_a
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end
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private
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def urls
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Gitlab::Routing.url_helpers
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end
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def link_class
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reference_class(:project_member)
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end
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def link_to_all(link_content: nil)
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project = context[:project]
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author = context[:author]
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if author && !project.team.member?(author)
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link_content
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else
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url = urls.project_url(project,
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only_path: context[:only_path])
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data = data_attribute(project: project.id, author: author.try(:id))
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content = link_content || User.reference_prefix + 'all'
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link_tag(url, data, content, 'All Project and Group Members')
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end
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end
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def link_to_namespace(namespace, link_content: nil)
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if namespace.is_a?(Group)
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link_to_group(namespace.full_path, namespace, link_content: link_content)
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else
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link_to_user(namespace.path, namespace, link_content: link_content)
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end
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end
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def link_to_group(group, namespace, link_content: nil)
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url = urls.group_url(group, only_path: context[:only_path])
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data = data_attribute(group: namespace.id)
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content = link_content || Group.reference_prefix + group
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link_tag(url, data, content, namespace.full_name)
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end
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def link_to_user(user, namespace, link_content: nil)
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url = urls.user_url(user, only_path: context[:only_path])
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data = data_attribute(user: namespace.owner_id)
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content = link_content || User.reference_prefix + user
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link_tag(url, data, content, namespace.owner_name)
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end
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def link_tag(url, data, link_content, title)
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%(<a href="#{url}" #{data} class="#{link_class}" title="#{escape_once(title)}">#{link_content}</a>)
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end
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end
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end
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end
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