99 lines
3.5 KiB
Ruby
99 lines
3.5 KiB
Ruby
module Gitlab
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# Custom parsing for Gitlab-flavored Markdown
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#
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# Examples
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#
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# >> m = Markdown.new(...)
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#
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# >> m.parse("Hey @david, can you fix this?")
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# => "Hey <a href="/gitlab/team_members/1">@david</a>, can you fix this?"
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#
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# >> m.parse("Commit 35d5f7c closes #1234")
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# => "Commit <a href="/gitlab/commits/35d5f7c">35d5f7c</a> closes <a href="/gitlab/issues/1234">#1234</a>"
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class Markdown
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include Rails.application.routes.url_helpers
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include ActionView::Helpers
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REFERENCE_PATTERN = %r{
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([^\w&;])? # Prefix (1)
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( # Reference (2)
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@([\w\._]+) # User name (3)
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|[#!$](\d+) # Issue/MR/Snippet ID (4)
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|([\h]{6,40}) # Commit ID (5)
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)
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([^\w&;])? # Suffix (6)
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}x.freeze
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attr_reader :html_options
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def initialize(project, html_options = {})
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@project = project
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@html_options = html_options
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end
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def parse(text)
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text.gsub(REFERENCE_PATTERN) do |match|
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prefix = $1 || ''
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reference = $2
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identifier = $3 || $4 || $5
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suffix = $6 || ''
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if ref_link = reference_link(reference, identifier)
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prefix + ref_link + suffix
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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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private
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# Private: Dispatches to a dedicated processing method based on reference
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#
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# reference - Object reference ("@1234", "!567", etc.)
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# identifier - Object identifier (Issue ID, SHA hash, etc.)
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#
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# Returns string rendered by the processing method
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def reference_link(reference, identifier)
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case reference
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when /^@/ then reference_user(identifier)
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when /^#/ then reference_issue(identifier)
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when /^!/ then reference_merge_request(identifier)
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when /^\$/ then reference_snippet(identifier)
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when /^\h/ then reference_commit(identifier)
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end
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end
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def reference_user(identifier)
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if user = @project.users.where(name: identifier).first
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member = @project.users_projects.where(user_id: user).first
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link_to("@#{user.name}", project_team_member_path(@project, member), html_options.merge(class: "gfm gfm-team_member #{html_options[:class]}")) if member
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end
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end
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def reference_issue(identifier)
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if issue = @project.issues.where(id: identifier).first
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link_to("##{issue.id}", project_issue_path(@project, issue), html_options.merge(title: "Issue: #{issue.title}", class: "gfm gfm-issue #{html_options[:class]}"))
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end
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end
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def reference_merge_request(identifier)
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if merge_request = @project.merge_requests.where(id: identifier).first
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link_to("!#{merge_request.id}", project_merge_request_path(@project, merge_request), html_options.merge(title: "Merge Request: #{merge_request.title}", class: "gfm gfm-merge_request #{html_options[:class]}"))
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end
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end
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def reference_snippet(identifier)
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if snippet = @project.snippets.where(id: identifier).first
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link_to("$#{snippet.id}", project_snippet_path(@project, snippet), html_options.merge(title: "Snippet: #{snippet.title}", class: "gfm gfm-snippet #{html_options[:class]}"))
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end
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end
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def reference_commit(identifier)
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if commit = @project.commit(identifier)
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link_to(identifier, project_commit_path(@project, id: commit.id), html_options.merge(title: "Commit: #{commit.author_name} - #{CommitDecorator.new(commit).title}", class: "gfm gfm-commit #{html_options[:class]}"))
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end
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end
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end
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end
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