78 lines
2.1 KiB
Ruby
78 lines
2.1 KiB
Ruby
module Gitlab
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module Diff
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class Highlight
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attr_reader :diff_file, :diff_lines, :raw_lines
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delegate :old_path, :new_path, :old_ref, :new_ref, to: :diff_file, prefix: :diff
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def initialize(diff_lines)
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if diff_lines.is_a?(Gitlab::Diff::File)
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@diff_file = diff_lines
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@diff_lines = @diff_file.diff_lines
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else
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@diff_lines = diff_lines
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end
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@raw_lines = @diff_lines.map(&:text)
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end
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def highlight
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@diff_lines.map.with_index do |diff_line, i|
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diff_line = diff_line.dup
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# ignore highlighting for "match" lines
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next diff_line if diff_line.type == 'match' || diff_line.type == 'nonewline'
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rich_line = highlight_line(diff_line) || diff_line.text
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if line_inline_diffs = inline_diffs[i]
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rich_line = InlineDiffMarker.new(diff_line.text, rich_line).mark(line_inline_diffs)
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end
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diff_line.text = rich_line
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diff_line
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end
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end
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private
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def highlight_line(diff_line)
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return unless diff_file && diff_file.diff_refs
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line_prefix = diff_line.text.match(/\A(.)/) ? $1 : ' '
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case diff_line.type
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when 'new', nil
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rich_line = new_lines[diff_line.new_pos - 1]
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when 'old'
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rich_line = old_lines[diff_line.old_pos - 1]
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end
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# Only update text if line is found. This will prevent
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# issues with submodules given the line only exists in diff content.
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"#{line_prefix}#{rich_line}".html_safe if rich_line
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end
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def inline_diffs
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@inline_diffs ||= InlineDiff.for_lines(@raw_lines)
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end
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def old_lines
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return unless diff_file
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@old_lines ||= Gitlab::Highlight.highlight_lines(*processing_args(:old))
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end
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def new_lines
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return unless diff_file
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@new_lines ||= Gitlab::Highlight.highlight_lines(*processing_args(:new))
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end
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def processing_args(version)
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ref = send("diff_#{version}_ref")
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path = send("diff_#{version}_path")
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[ref.project.repository, ref.id, path]
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end
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end
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end
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end
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