60 lines
2.2 KiB
Ruby
60 lines
2.2 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module MergeRequests
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class MergeCommitMessage
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def initialize(merge_request:)
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@merge_request = merge_request
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end
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def message
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return unless @merge_request.target_project.merge_commit_template.present?
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message = @merge_request.target_project.merge_commit_template
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message = message.delete("\r")
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# Remove placeholders that correspond to empty values and are the last word in the line
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# along with all whitespace characters preceding them.
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# This allows us to recreate previous default merge commit message behaviour - we skipped new line character
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# before empty description and before closed issues when none were present.
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PLACEHOLDERS.each do |key, value|
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unless value.call(merge_request).present?
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message = message.gsub(BLANK_PLACEHOLDERS_REGEXES[key], '')
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end
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end
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Gitlab::StringPlaceholderReplacer
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.replace_string_placeholders(message, PLACEHOLDERS_REGEX) do |key|
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PLACEHOLDERS[key].call(merge_request)
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end
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end
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private
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attr_reader :merge_request
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PLACEHOLDERS = {
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'source_branch' => ->(merge_request) { merge_request.source_branch.to_s },
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'target_branch' => ->(merge_request) { merge_request.target_branch.to_s },
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'title' => ->(merge_request) { merge_request.title },
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'issues' => ->(merge_request) do
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return "" if merge_request.visible_closing_issues_for.blank?
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closes_issues_references = merge_request.visible_closing_issues_for.map do |issue|
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issue.to_reference(merge_request.target_project)
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end
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"Closes #{closes_issues_references.to_sentence}"
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end,
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'description' => ->(merge_request) { merge_request.description.presence || '' },
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'reference' => ->(merge_request) { merge_request.to_reference(full: true) }
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}.freeze
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PLACEHOLDERS_REGEX = Regexp.union(PLACEHOLDERS.keys.map do |key|
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Regexp.new(Regexp.escape(key))
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end).freeze
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BLANK_PLACEHOLDERS_REGEXES = (PLACEHOLDERS.map do |key, value|
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[key, Regexp.new("[\n\r]+%{#{Regexp.escape(key)}}$")]
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end).to_h.freeze
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end
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end
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end
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