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module Gitlab
# Extract possible GFM references from an arbitrary String for further processing.
class ReferenceExtractor
attr_accessor :project, :current_user, :references
include ::Gitlab::Markdown
def initialize(project, current_user = nil)
@project = project
@current_user = current_user
end
def can?(user, action, subject)
Ability.abilities.allowed?(user, action, subject)
end
def analyze(text)
text = text.dup
# Remove preformatted/code blocks so that references are not included
text.gsub!(%r{<pre>.*?</pre>|<code>.*?</code>}m) { |match| '' }
text.gsub!(%r{^```.*?^```}m) { |match| '' }
@references = Hash.new { |hash, type| hash[type] = [] }
parse_references(text)
end
# Given a valid project, resolve the extracted identifiers of the requested type to
# model objects.
def users
references[:user].uniq.map do |project, identifier|
if identifier == "all"
project.team.members.flatten
elsif namespace = Namespace.find_by(path: identifier)
if namespace.is_a?(Group)
namespace.users
else
namespace.owner
end
end
end.flatten.compact.uniq
end
def labels
references[:label].uniq.map do |project, identifier|
project.labels.where(id: identifier).first
end.compact.uniq
end
def issues
references[:issue].uniq.map do |project, identifier|
if project.default_issues_tracker?
project.issues.where(iid: identifier).first
end
end.compact.uniq
end
def merge_requests
references[:merge_request].uniq.map do |project, identifier|
project.merge_requests.where(iid: identifier).first
end.compact.uniq
end
def snippets
references[:snippet].uniq.map do |project, identifier|
project.snippets.where(id: identifier).first
end.compact.uniq
end
def commits
references[:commit].uniq.map do |project, identifier|
repo = project.repository
repo.commit(identifier) if repo
end.compact.uniq
end
def commit_ranges
references[:commit_range].uniq.map do |project, identifier|
repo = project.repository
if repo
from_id, to_id = identifier.split(/\.{2,3}/, 2)
[repo.commit(from_id), repo.commit(to_id)]
end
end.compact.uniq
end
private
def reference_link(type, identifier, project, _)
references[type] << [project, identifier]
end
end
end
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