Remove duplication in reference filters
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
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require 'gitlab/markdown'
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module Gitlab
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module Markdown
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# Issues, Snippets and Merge Requests shares similar functionality in refernce filtering.
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# All this functionality moved to this class
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class AbstractReferenceFilter < ReferenceFilter
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include CrossProjectReference
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def self.object_class
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# Implement in child class
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# Example: MergeRequest
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end
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def self.object_name
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object_class.name.underscore
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end
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def self.object_sym
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object_name.to_sym
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end
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def self.data_reference
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"data-#{object_name.dasherize}"
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end
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# Public: Find references in text (like `!123` for merge requests)
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#
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# AnyReferenceFilter.references_in(text) do |match, object|
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# "<a href=...>PREFIX#{object}</a>"
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# end
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#
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# PREFIX - symbol that detects reference (like ! for merge requests)
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# object - reference object (snippet, merget request etc)
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# text - String text to search.
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#
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# Yields the String match, the Integer referenced object ID, and an optional String
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# of the external project reference.
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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(object_class.reference_pattern) do |match|
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yield match, $~[object_sym].to_i, $~[:project]
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end
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end
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def self.referenced_by(node)
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{ object_sym => LazyReference.new(object_class, node.attr(data_reference)) }
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end
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delegate :object_class, :object_sym, :references_in, to: :class
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def find_object(project, id)
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# Implement in child class
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# Example: project.merge_requests.find
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end
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def url_for_object(object, project)
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# Implement in child class
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# Example: project_merge_request_url
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end
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def call
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replace_text_nodes_matching(object_class.reference_pattern) do |content|
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object_link_filter(content)
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end
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end
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# Replace references (like `!123` for merge requests) in text with links
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# to the referenced object's details page.
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#
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# text - String text to replace references in.
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#
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# Returns a String with references replaced with links. All links
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# have `gfm` and `gfm-OBJECT_NAME` class names attached for styling.
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def object_link_filter(text)
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references_in(text) do |match, id, project_ref|
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project = project_from_ref(project_ref)
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if project && object = find_object(project, id)
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title = escape_once("#{object_title}: #{object.title}")
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klass = reference_class(object_sym)
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data = data_attribute(project: project.id, object_sym => object.id)
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url = url_for_object(object, project)
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%(<a href="#{url}" #{data}
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title="#{title}"
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class="#{klass}">#{match}</a>)
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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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def object_title
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object_class.name.titleize
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end
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end
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end
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end
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@ -6,66 +6,17 @@ module Gitlab
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# issues that do not exist are ignored.
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#
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# This filter supports cross-project references.
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class IssueReferenceFilter < ReferenceFilter
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include CrossProjectReference
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# Public: Find `#123` issue references in text
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#
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# IssueReferenceFilter.references_in(text) do |match, issue, project_ref|
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# "<a href=...>##{issue}</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, the Integer issue ID, and an optional String of
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# the external project reference.
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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(Issue.reference_pattern) do |match|
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yield match, $~[:issue].to_i, $~[:project]
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end
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class IssueReferenceFilter < AbstractReferenceFilter
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def self.object_class
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Issue
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end
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def self.referenced_by(node)
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{ issue: LazyReference.new(Issue, node.attr("data-issue")) }
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def find_object(project, id)
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project.get_issue(id)
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end
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def call
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replace_text_nodes_matching(Issue.reference_pattern) do |content|
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issue_link_filter(content)
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end
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end
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# Replace `#123` issue references in text with links to the referenced
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# issue's details page.
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#
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# text - String text to replace references in.
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#
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# Returns a String with `#123` references replaced with links. All links
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# have `gfm` and `gfm-issue` class names attached for styling.
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def issue_link_filter(text)
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self.class.references_in(text) do |match, id, project_ref|
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project = self.project_from_ref(project_ref)
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if project && issue = project.get_issue(id)
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url = url_for_issue(id, project, only_path: context[:only_path])
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title = escape_once("Issue: #{issue.title}")
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klass = reference_class(:issue)
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data = data_attribute(project: project.id, issue: issue.id)
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%(<a href="#{url}" #{data}
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title="#{title}"
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class="#{klass}">#{match}</a>)
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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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def url_for_issue(*args)
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IssuesHelper.url_for_issue(*args)
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def url_for_object(issue, project)
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IssuesHelper.url_for_issue(issue.iid, project, only_path: context[:only_path])
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end
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end
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end
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@ -6,65 +6,16 @@ module Gitlab
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# to merge requests that do not exist are ignored.
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#
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# This filter supports cross-project references.
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class MergeRequestReferenceFilter < ReferenceFilter
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include CrossProjectReference
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# Public: Find `!123` merge request references in text
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#
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# MergeRequestReferenceFilter.references_in(text) do |match, merge_request, project_ref|
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# "<a href=...>##{merge_request}</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, the Integer merge request ID, and an optional
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# String of the external project reference.
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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(MergeRequest.reference_pattern) do |match|
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yield match, $~[:merge_request].to_i, $~[:project]
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end
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class MergeRequestReferenceFilter < AbstractReferenceFilter
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def self.object_class
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MergeRequest
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end
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def self.referenced_by(node)
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{ merge_request: LazyReference.new(MergeRequest, node.attr("data-merge-request")) }
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def find_object(project, id)
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project.merge_requests.find_by(iid: id)
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end
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def call
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replace_text_nodes_matching(MergeRequest.reference_pattern) do |content|
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merge_request_link_filter(content)
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end
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end
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# Replace `!123` merge request references in text with links to the
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# referenced merge request's details page.
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#
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# text - String text to replace references in.
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#
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# Returns a String with `!123` references replaced with links. All links
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# have `gfm` and `gfm-merge_request` class names attached for styling.
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def merge_request_link_filter(text)
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self.class.references_in(text) do |match, id, project_ref|
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project = self.project_from_ref(project_ref)
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if project && merge_request = project.merge_requests.find_by(iid: id)
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title = escape_once("Merge Request: #{merge_request.title}")
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klass = reference_class(:merge_request)
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data = data_attribute(project: project.id, merge_request: merge_request.id)
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url = url_for_merge_request(merge_request, project)
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%(<a href="#{url}" #{data}
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title="#{title}"
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class="#{klass}">#{match}</a>)
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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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def url_for_merge_request(mr, project)
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def url_for_object(mr, project)
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h = Gitlab::Application.routes.url_helpers
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h.namespace_project_merge_request_url(project.namespace, project, mr,
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only_path: context[:only_path])
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@ -6,65 +6,16 @@ module Gitlab
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# snippets that do not exist are ignored.
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#
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# This filter supports cross-project references.
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class SnippetReferenceFilter < ReferenceFilter
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include CrossProjectReference
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# Public: Find `$123` snippet references in text
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#
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# SnippetReferenceFilter.references_in(text) do |match, snippet|
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# "<a href=...>$#{snippet}</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, the Integer snippet ID, and an optional String
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# of the external project reference.
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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(Snippet.reference_pattern) do |match|
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yield match, $~[:snippet].to_i, $~[:project]
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end
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class SnippetReferenceFilter < AbstractReferenceFilter
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def self.object_class
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Snippet
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end
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def self.referenced_by(node)
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{ snippet: LazyReference.new(Snippet, node.attr("data-snippet")) }
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def find_object(project, id)
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project.snippets.find_by(id: id)
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end
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def call
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replace_text_nodes_matching(Snippet.reference_pattern) do |content|
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snippet_link_filter(content)
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end
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end
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# Replace `$123` snippet references in text with links to the referenced
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# snippets's details page.
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#
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# text - String text to replace references in.
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#
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# Returns a String with `$123` references replaced with links. All links
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# have `gfm` and `gfm-snippet` class names attached for styling.
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def snippet_link_filter(text)
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self.class.references_in(text) do |match, id, project_ref|
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project = self.project_from_ref(project_ref)
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if project && snippet = project.snippets.find_by(id: id)
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title = escape_once("Snippet: #{snippet.title}")
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klass = reference_class(:snippet)
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data = data_attribute(project: project.id, snippet: snippet.id)
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url = url_for_snippet(snippet, project)
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%(<a href="#{url}" #{data}
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title="#{title}"
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class="#{klass}">#{match}</a>)
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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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def url_for_snippet(snippet, project)
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def url_for_object(snippet, project)
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h = Gitlab::Application.routes.url_helpers
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h.namespace_project_snippet_url(project.namespace, project, snippet,
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only_path: context[:only_path])
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