290 lines
9.2 KiB
Ruby
290 lines
9.2 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Conflict
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class File
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include Gitlab::Routing
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include IconsHelper
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include Gitlab::Utils::StrongMemoize
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CONTEXT_LINES = 3
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CONFLICT_MARKER_OUR = 'conflict_marker_our'
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CONFLICT_MARKER_THEIR = 'conflict_marker_their'
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CONFLICT_MARKER_SEPARATOR = 'conflict_marker'
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CONFLICT_TYPES = {
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"old" => "conflict_their",
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"new" => "conflict_our"
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}.freeze
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attr_reader :merge_request
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# 'raw' holds the Gitlab::Git::Conflict::File that this instance wraps
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attr_reader :raw
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delegate :type, :content, :path, :ancestor_path, :their_path, :our_path, :our_mode, :our_blob, :repository, to: :raw
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def initialize(raw, merge_request:)
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@raw = raw
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@merge_request = merge_request
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@match_line_headers = {}
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end
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def lines
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return @lines if defined?(@lines)
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@lines = raw.lines.nil? ? nil : map_raw_lines(raw.lines)
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end
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def resolve_lines(resolution)
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map_raw_lines(raw.resolve_lines(resolution))
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end
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def highlight_lines!
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their_highlight = Gitlab::Highlight.highlight(their_path, their_lines, language: their_language).lines
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our_highlight = Gitlab::Highlight.highlight(our_path, our_lines, language: our_language).lines
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lines.each do |line|
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line.rich_text =
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if line.type == 'old'
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their_highlight[line.old_line - 1].try(:html_safe)
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else
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our_highlight[line.new_line - 1].try(:html_safe)
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end
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end
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end
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def diff_lines_for_serializer
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# calculate sections and highlight lines before changing types
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sections && highlight_lines!
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sections.flat_map do |section|
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if section[:conflict]
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lines = []
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lines << create_separator_line(section[:lines].first, CONFLICT_MARKER_OUR)
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current_type = section[:lines].first.type
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section[:lines].each do |line|
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if line.type != current_type # insert a separator between our changes and theirs
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lines << create_separator_line(line, CONFLICT_MARKER_SEPARATOR)
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current_type = line.type
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end
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line.type = CONFLICT_TYPES[line.type]
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# Swap the positions around due to conflicts/diffs display inconsistency
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# https://gitlab.com/gitlab-org/gitlab/-/issues/291989
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line.old_pos, line.new_pos = line.new_pos, line.old_pos
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lines << line
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end
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lines << create_separator_line(lines.last, CONFLICT_MARKER_THEIR)
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lines
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else
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section[:lines]
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end
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end
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end
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def sections
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return @sections if @sections
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chunked_lines = lines.chunk { |line| line.type.nil? }.to_a
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match_line = nil
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sections_count = chunked_lines.size
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@sections = chunked_lines.flat_map.with_index do |(no_conflict, lines), i|
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section = nil
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# We need to reduce context sections to CONTEXT_LINES. Conflict sections are
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# always shown in full.
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if no_conflict
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conflict_before = i > 0
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conflict_after = (sections_count - i) > 1
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if conflict_before && conflict_after
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# Create a gap in a long context section.
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if lines.length > CONTEXT_LINES * 2
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head_lines = lines.first(CONTEXT_LINES)
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tail_lines = lines.last(CONTEXT_LINES)
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# Ensure any existing match line has text for all lines up to the last
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# line of its context.
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update_match_line_text(match_line, head_lines.last)
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# Insert a new match line after the created gap.
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match_line = create_match_line(tail_lines.first)
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section = [
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{ conflict: false, lines: head_lines },
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{ conflict: false, lines: tail_lines.unshift(match_line) }
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]
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end
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elsif conflict_after
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tail_lines = lines.last(CONTEXT_LINES)
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# Create a gap and insert a match line at the start.
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if lines.length > tail_lines.length
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match_line = create_match_line(tail_lines.first)
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tail_lines.unshift(match_line)
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end
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lines = tail_lines
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elsif conflict_before
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# We're at the end of the file (no conflicts after)
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number_of_trailing_lines = lines.size
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# Remove extra trailing lines
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lines = lines.first(CONTEXT_LINES)
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if number_of_trailing_lines > CONTEXT_LINES
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lines << create_match_line(lines.last)
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end
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end
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end
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# We want to update the match line's text every time unless we've already
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# created a gap and its corresponding match line.
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update_match_line_text(match_line, lines.last) unless section
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section ||= { conflict: !no_conflict, lines: lines }
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section[:id] = line_code(lines.first) unless no_conflict
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section
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end
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end
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def line_code(line)
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Gitlab::Git.diff_line_code(our_path, line.new_pos, line.old_pos)
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end
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def create_match_line(line)
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Gitlab::Diff::Line.new('', 'match', line.index, line.old_pos, line.new_pos)
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end
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def create_separator_line(line, type)
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Gitlab::Diff::Line.new('', type, line.index, nil, nil)
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end
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# Any line beginning with a letter, an underscore, or a dollar can be used in a
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# match line header. Only context sections can contain match lines, as match lines
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# have to exist in both versions of the file.
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def find_match_line_header(index)
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return @match_line_headers[index] if @match_line_headers.key?(index)
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@match_line_headers[index] = begin
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if index >= 0
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line = lines[index]
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if line.type.nil? && line.text.match(/\A[A-Za-z$_]/)
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" #{line.text}"
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else
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find_match_line_header(index - 1)
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end
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end
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end
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end
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# Set the match line's text for the current line. A match line takes its start
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# position and context header (where present) from itself, and its end position from
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# the line passed in.
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def update_match_line_text(match_line, line)
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return unless match_line
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header = find_match_line_header(match_line.index - 1)
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match_line.text = "@@ -#{match_line.old_pos},#{line.old_pos} +#{match_line.new_pos},#{line.new_pos} @@#{header}"
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end
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def as_json(opts = {})
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json_hash = {
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old_path: their_path,
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new_path: our_path,
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blob_icon: file_type_icon_class('file', our_mode, our_path),
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blob_path: project_blob_path(merge_request.project, ::File.join(merge_request.diff_refs.head_sha, our_path))
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}
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json_hash.tap do |json_hash|
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if opts[:full_content]
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json_hash[:content] = content
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else
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json_hash[:sections] = sections if type.text?
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json_hash[:type] = type
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json_hash[:content_path] = content_path
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end
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end
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end
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def content_path
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conflict_for_path_project_merge_request_path(merge_request.project,
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merge_request,
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old_path: their_path,
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new_path: our_path)
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end
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def conflict_type(diff_file)
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if ancestor_path.present?
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if our_path.present? && their_path.present?
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:both_modified
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elsif their_path.blank?
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:modified_source_removed_target
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else
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:modified_target_removed_source
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end
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else
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if our_path.present? && their_path.present?
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:both_added
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elsif their_path.blank?
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diff_file.renamed_file? ? :renamed_same_file : :removed_target_renamed_source
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else
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:removed_source_renamed_target
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end
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end
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end
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private
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def map_raw_lines(raw_lines)
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raw_lines.map do |raw_line|
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Gitlab::Diff::Line.new(raw_line[:full_line], raw_line[:type],
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raw_line[:line_obj_index], raw_line[:line_old],
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raw_line[:line_new], parent_file: self)
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end
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end
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def their_language
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strong_memoize(:their_language) do
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repository.gitattribute(their_path, 'gitlab-language')
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end
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end
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def our_language
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strong_memoize(:our_language) do
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if our_path == their_path
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their_language
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else
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repository.gitattribute(our_path, 'gitlab-language')
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end
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end
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end
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def their_lines
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strong_memoize(:their_lines) do
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lines.reject { |line| line.type == 'new' }.map(&:text).join("\n")
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end
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end
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def our_lines
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strong_memoize(:our_lines) do
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lines.reject { |line| line.type == 'old' }.map(&:text).join("\n")
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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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