2014-09-08 13:25:50 +00:00
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module Gitlab
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module Diff
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class File
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2017-05-15 18:19:49 +00:00
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attr_reader :diff, :repository, :diff_refs, :fallback_diff_refs
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2014-09-08 13:25:50 +00:00
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2017-05-15 17:10:29 +00:00
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delegate :new_file?, :deleted_file?, :renamed_file?,
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:old_path, :new_path, :a_mode, :b_mode, :mode_changed?,
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2017-09-11 12:52:27 +00:00
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:submodule?, :expanded?, :too_large?, :collapsed?, :line_count, :has_binary_notice?, to: :diff, prefix: false
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2017-06-06 21:28:06 +00:00
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# Finding a viewer for a diff file happens based only on extension and whether the
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# diff file blobs are binary or text, which means 1 diff file should only be matched by 1 viewer,
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# and the order of these viewers doesn't really matter.
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#
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# However, when the diff file blobs are LFS pointers, we cannot know for sure whether the
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# file being pointed to is binary or text. In this case, we match only on
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# extension, preferring binary viewers over text ones if both exist, since the
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# large files referred to in "Large File Storage" are much more likely to be
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# binary than text.
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RICH_VIEWERS = [
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DiffViewer::Image
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].sort_by { |v| v.binary? ? 0 : 1 }.freeze
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2014-09-08 13:25:50 +00:00
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2017-05-15 18:19:49 +00:00
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def initialize(diff, repository:, diff_refs: nil, fallback_diff_refs: nil)
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2014-09-08 13:25:50 +00:00
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@diff = diff
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2016-06-20 16:51:48 +00:00
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@repository = repository
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2016-01-20 17:44:27 +00:00
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@diff_refs = diff_refs
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2017-05-15 18:19:49 +00:00
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@fallback_diff_refs = fallback_diff_refs
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2017-11-03 13:16:43 +00:00
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# Ensure items are collected in the the batch
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2018-03-16 15:35:58 +00:00
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new_blob_lazy
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old_blob_lazy
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2016-01-20 17:44:27 +00:00
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end
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2017-10-07 04:25:17 +00:00
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def position(position_marker, position_type: :text)
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2016-06-20 17:17:25 +00:00
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return unless diff_refs
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2017-10-07 04:25:17 +00:00
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data = {
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diff_refs: diff_refs,
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position_type: position_type.to_s,
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2016-06-20 17:17:25 +00:00
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old_path: old_path,
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2017-10-07 04:25:17 +00:00
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new_path: new_path
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}
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if position_type == :text
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data.merge!(text_position_properties(position_marker))
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else
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data.merge!(image_position_properties(position_marker))
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end
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Position.new(data)
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2016-06-20 17:17:25 +00:00
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end
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2016-06-20 17:15:44 +00:00
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def line_code(line)
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return if line.meta?
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2017-10-10 17:44:14 +00:00
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Gitlab::Git.diff_line_code(file_path, line.new_pos, line.old_pos)
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2016-06-20 17:15:44 +00:00
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end
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def line_for_line_code(code)
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diff_lines.find { |line| line_code(line) == code }
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end
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2016-06-20 17:17:25 +00:00
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def line_for_position(pos)
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2017-12-22 11:49:56 +00:00
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return nil unless pos.position_type == 'text'
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diff_lines.find { |line| line.old_line == pos.old_line && line.new_line == pos.new_line }
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2016-06-20 17:17:25 +00:00
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end
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def position_for_line_code(code)
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line = line_for_line_code(code)
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position(line) if line
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end
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def line_code_for_position(pos)
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line = line_for_position(pos)
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line_code(line) if line
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end
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2018-05-16 15:46:18 +00:00
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# Returns the raw diff content up to the given line index
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def diff_hunk(diff_line)
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2018-06-04 22:20:58 +00:00
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diff_line_index = diff_line.index
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# @@ (match) header is not kept if it's found in the top of the file,
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# therefore we should keep an extra line on this scenario.
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diff_line_index += 1 unless diff_lines.first.match?
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diff_lines.select { |line| line.index <= diff_line_index }.map(&:text).join("\n")
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2018-05-16 15:46:18 +00:00
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end
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2017-05-15 18:19:49 +00:00
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def old_sha
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diff_refs&.base_sha
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end
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def new_sha
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diff_refs&.head_sha
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end
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2017-06-06 21:24:32 +00:00
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def new_content_sha
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return if deleted_file?
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return @new_content_sha if defined?(@new_content_sha)
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2017-05-15 18:19:49 +00:00
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refs = diff_refs || fallback_diff_refs
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2017-06-06 21:24:32 +00:00
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@new_content_sha = refs&.head_sha
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2017-05-15 18:19:49 +00:00
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end
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def old_content_sha
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return if new_file?
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return @old_content_sha if defined?(@old_content_sha)
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2016-07-06 23:29:41 +00:00
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2017-05-15 18:19:49 +00:00
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refs = diff_refs || fallback_diff_refs
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@old_content_sha = refs&.base_sha
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2016-06-20 16:54:53 +00:00
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end
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2017-06-06 21:24:32 +00:00
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def new_blob
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2018-03-16 15:35:58 +00:00
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new_blob_lazy&.itself
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2016-01-20 17:44:27 +00:00
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end
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2017-05-15 18:19:49 +00:00
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def old_blob
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2018-03-16 15:35:58 +00:00
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old_blob_lazy&.itself
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2014-09-08 13:25:50 +00:00
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end
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2017-06-06 21:24:32 +00:00
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def content_sha
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new_content_sha || old_content_sha
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end
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def blob
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2018-03-16 15:35:58 +00:00
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new_blob || old_blob
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2017-06-06 21:24:32 +00:00
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end
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2016-07-26 07:21:42 +00:00
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attr_writer :highlighted_diff_lines
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2016-07-20 16:25:36 +00:00
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2016-06-20 16:51:48 +00:00
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# Array of Gitlab::Diff::Line objects
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2014-09-08 13:25:50 +00:00
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def diff_lines
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2018-06-21 12:22:40 +00:00
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@diff_lines ||=
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Gitlab::Diff::Parser.new.parse(raw_diff.each_line, diff_file: self).to_a
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2016-03-11 16:40:59 +00:00
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end
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2015-12-30 05:52:50 +00:00
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def highlighted_diff_lines
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2018-06-21 12:22:40 +00:00
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@highlighted_diff_lines ||=
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Gitlab::Diff::Highlight.new(self, repository: self.repository).highlight
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2015-12-30 05:52:50 +00:00
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end
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2016-07-20 16:25:36 +00:00
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# Array[<Hash>] with right/left keys that contains Gitlab::Diff::Line objects which text is hightlighted
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2016-01-20 13:51:56 +00:00
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def parallel_diff_lines
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2016-06-20 16:51:48 +00:00
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@parallel_diff_lines ||= Gitlab::Diff::ParallelDiff.new(self).parallelize
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2016-01-20 13:51:56 +00:00
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end
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2014-09-08 18:54:52 +00:00
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def raw_diff
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2014-09-24 10:26:53 +00:00
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diff.diff.to_s
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2014-09-08 18:54:52 +00:00
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end
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2014-09-08 13:25:50 +00:00
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def next_line(index)
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diff_lines[index + 1]
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end
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def prev_line(index)
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2016-06-20 16:57:10 +00:00
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diff_lines[index - 1] if index > 0
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2014-09-08 13:25:50 +00:00
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end
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2014-09-08 18:54:52 +00:00
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2016-06-20 17:17:25 +00:00
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def paths
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[old_path, new_path].compact
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end
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2014-09-08 18:54:52 +00:00
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def file_path
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2016-06-20 16:57:10 +00:00
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new_path.presence || old_path
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2014-09-08 18:54:52 +00:00
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end
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2015-10-01 11:52:08 +00:00
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def added_lines
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2015-12-15 02:53:52 +00:00
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diff_lines.count(&:added?)
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2015-10-01 11:52:08 +00:00
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end
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def removed_lines
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2015-12-15 02:53:52 +00:00
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diff_lines.count(&:removed?)
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2015-10-01 11:52:08 +00:00
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end
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2016-06-20 16:54:53 +00:00
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2016-11-10 17:24:12 +00:00
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def file_identifier
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2017-05-15 17:10:29 +00:00
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"#{file_path}-#{new_file?}-#{deleted_file?}-#{renamed_file?}"
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2016-10-12 13:34:47 +00:00
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end
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2017-06-06 21:24:32 +00:00
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def diffable?
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repository.attributes(file_path).fetch('diff') { true }
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end
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def binary?
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2018-01-03 14:18:13 +00:00
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has_binary_notice? || try_blobs(:binary?)
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2017-06-06 21:24:32 +00:00
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end
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def text?
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!binary?
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end
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2017-06-06 21:28:06 +00:00
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def external_storage_error?
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2018-01-03 14:18:13 +00:00
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try_blobs(:external_storage_error?)
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2017-06-06 21:28:06 +00:00
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end
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def stored_externally?
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2018-01-03 14:18:13 +00:00
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try_blobs(:stored_externally?)
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2017-06-06 21:28:06 +00:00
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end
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def external_storage
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2018-01-03 14:18:13 +00:00
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try_blobs(:external_storage)
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2017-06-06 21:28:06 +00:00
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end
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def content_changed?
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2017-08-22 15:27:09 +00:00
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return blobs_changed? if diff_refs
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return false if new_file? || deleted_file? || renamed_file?
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text? && diff_lines.any?
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2017-06-06 21:28:06 +00:00
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end
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def different_type?
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old_blob && new_blob && old_blob.binary? != new_blob.binary?
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end
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def size
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2018-01-03 14:18:13 +00:00
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valid_blobs.map(&:size).sum
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2017-06-06 21:28:06 +00:00
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end
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def raw_size
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2018-01-03 14:18:13 +00:00
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valid_blobs.map(&:raw_size).sum
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2017-06-06 21:28:06 +00:00
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end
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def raw_binary?
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2018-01-03 14:18:13 +00:00
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try_blobs(:raw_binary?)
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2017-06-06 21:28:06 +00:00
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end
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def raw_text?
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!raw_binary? && !different_type?
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end
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def simple_viewer
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@simple_viewer ||= simple_viewer_class.new(self)
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end
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def rich_viewer
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return @rich_viewer if defined?(@rich_viewer)
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@rich_viewer = rich_viewer_class&.new(self)
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end
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def rendered_as_text?(ignore_errors: true)
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simple_viewer.is_a?(DiffViewer::Text) && (ignore_errors || simple_viewer.render_error.nil?)
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end
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2018-06-21 12:22:40 +00:00
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# This adds the bottom match line to the array if needed. It contains
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# the data to load more context lines.
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def diff_lines_for_serializer
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lines = highlighted_diff_lines
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return if lines.empty?
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last_line = lines.last
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if last_line.new_pos < total_blob_lines(blob)
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match_line = Gitlab::Diff::Line.new("", 'match', nil, last_line.old_pos, last_line.new_pos)
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lines.push(match_line)
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end
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lines
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end
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2017-06-06 21:28:06 +00:00
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private
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2018-06-21 12:22:40 +00:00
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def total_blob_lines(blob)
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@total_lines ||= begin
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line_count = blob.lines.size
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line_count -= 1 if line_count > 0 && blob.lines.last.blank?
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line_count
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end
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end
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2018-03-16 15:35:58 +00:00
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# We can't use Object#try because Blob doesn't inherit from Object, but
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# from BasicObject (via SimpleDelegator).
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2018-01-03 14:18:13 +00:00
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def try_blobs(meth)
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2018-03-16 15:35:58 +00:00
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old_blob&.public_send(meth) || new_blob&.public_send(meth)
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2018-01-03 14:18:13 +00:00
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end
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def valid_blobs
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2018-03-16 15:35:58 +00:00
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[old_blob, new_blob].compact
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2018-01-03 14:18:13 +00:00
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end
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2017-10-07 04:25:17 +00:00
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def text_position_properties(line)
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{ old_line: line.old_line, new_line: line.new_line }
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end
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def image_position_properties(image_point)
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image_point.to_h
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end
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2017-08-22 15:27:09 +00:00
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def blobs_changed?
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old_blob && new_blob && old_blob.id != new_blob.id
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end
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2018-03-16 15:35:58 +00:00
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def new_blob_lazy
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return unless new_content_sha
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Blob.lazy(repository.project, new_content_sha, file_path)
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end
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def old_blob_lazy
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return unless old_content_sha
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Blob.lazy(repository.project, old_content_sha, old_path)
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end
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2017-06-06 21:28:06 +00:00
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def simple_viewer_class
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return DiffViewer::NotDiffable unless diffable?
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if content_changed?
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if raw_text?
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DiffViewer::Text
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else
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DiffViewer::NoPreview
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end
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elsif new_file?
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if raw_text?
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DiffViewer::Text
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else
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DiffViewer::Added
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end
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elsif deleted_file?
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if raw_text?
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DiffViewer::Text
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else
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|
|
|
DiffViewer::Deleted
|
|
|
|
end
|
|
|
|
elsif renamed_file?
|
|
|
|
DiffViewer::Renamed
|
|
|
|
elsif mode_changed?
|
|
|
|
DiffViewer::ModeChanged
|
2017-08-22 13:04:54 +00:00
|
|
|
else
|
|
|
|
DiffViewer::NoPreview
|
2017-06-06 21:28:06 +00:00
|
|
|
end
|
|
|
|
end
|
|
|
|
|
|
|
|
def rich_viewer_class
|
|
|
|
viewer_class_from(RICH_VIEWERS)
|
|
|
|
end
|
|
|
|
|
|
|
|
def viewer_class_from(classes)
|
|
|
|
return unless diffable?
|
|
|
|
return if different_type? || external_storage_error?
|
|
|
|
return unless new_file? || deleted_file? || content_changed?
|
|
|
|
|
|
|
|
verify_binary = !stored_externally?
|
|
|
|
|
|
|
|
classes.find { |viewer_class| viewer_class.can_render?(self, verify_binary: verify_binary) }
|
|
|
|
end
|
2014-09-08 13:25:50 +00:00
|
|
|
end
|
|
|
|
end
|
|
|
|
end
|