108 lines
3.7 KiB
Ruby
108 lines
3.7 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Diff
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module Rendered
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module Notebook
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module DiffFileHelper
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require 'set'
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EMBEDDED_IMAGE_PATTERN = ' 
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diff_content.scan(/.*\n/)[2..]&.join('') if diff_content.present?
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end
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# line_positions_at_source_diff: given the transformed lines,
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# what are the correct values for old_pos and new_pos?
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#
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# Example:
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#
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# Original
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# from | to
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# A | A
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# B | D
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# C | E
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# F | F
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#
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# Original Diff
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# A A
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# - B
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# - C
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# + D
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# + E
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# F F
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#
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# Transformed
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# from | to
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# A | A
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# C | D
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# B | J
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# L | E
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# K | K
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# F | F
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#
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# Transformed diff | transf old, new | OG old_pos, new_pos |
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# A A | 1, 1 | 1, 1 |
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# -C | 2, 2 | 3, 2 |
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# -B | 3, 2 | 2, 2 |
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# -L | 4, 2 | 0, 0 |
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# + D | 5, 2 | 4, 2 |
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# + J | 5, 3 | 0, 0 |
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# + E | 5, 4 | 4, 3 |
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# K K | 5, 5 | 0, 0 |
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# F F | 6, 6 | 4, 4 |
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def line_positions_at_source_diff(lines, blocks)
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last_mapped_old_pos = 0
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last_mapped_new_pos = 0
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lines.reverse_each.map do |line|
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old_pos = source_line_from_block(line.old_pos, blocks[:from])
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new_pos = source_line_from_block(line.new_pos, blocks[:to])
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old_has_no_mapping = old_pos == 0
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new_has_no_mapping = new_pos == 0
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next [0, 0] if old_has_no_mapping && (new_has_no_mapping || line.type == 'old')
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next [0, 0] if new_has_no_mapping && line.type == 'new'
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new_pos = last_mapped_new_pos if new_has_no_mapping && line.type == 'old'
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old_pos = last_mapped_old_pos if old_has_no_mapping && line.type == 'new'
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last_mapped_old_pos = old_pos
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last_mapped_new_pos = new_pos
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[old_pos, new_pos]
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end.reverse
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end
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def lines_in_source_diff(source_diff_lines, is_deleted_file, is_added_file)
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{
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from: is_added_file ? Set[] : source_diff_lines.map { |l| l.old_pos }.to_set,
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to: is_deleted_file ? Set[] : source_diff_lines.map { |l| l.new_pos }.to_set
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}
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end
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def source_line_from_block(transformed_line, transformed_blocks)
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# Blocks are the lines returned from the library and are a hash with {text:, source_line:}
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# Blocks source_line are 0 indexed
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return 0 if transformed_blocks.empty?
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line_in_source = transformed_blocks[transformed_line - 1][:source_line]
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return 0 unless line_in_source.present?
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line_in_source
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end
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def image_as_rich_text(line_text)
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return unless line_text[1..].starts_with?(EMBEDDED_IMAGE_PATTERN)
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image_body = line_text[1..].delete_prefix(EMBEDDED_IMAGE_PATTERN).delete_suffix(')')
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"<img src=\"data:image#{CGI.escapeHTML(image_body)}\">".html_safe
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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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end
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