Class: DiscourseDiff
- Inherits:
-
Object
- Object
- DiscourseDiff
- Defined in:
- lib/discourse_diff.rb
Defined Under Namespace
Classes: HtmlTokenizer
Constant Summary collapse
- MAX_DIFFERENCE =
200
Instance Method Summary collapse
-
#initialize(before, after) ⇒ DiscourseDiff
constructor
A new instance of DiscourseDiff.
- #inline_html ⇒ Object
- #side_by_side_html ⇒ Object
- #side_by_side_markdown ⇒ Object
Constructor Details
#initialize(before, after) ⇒ DiscourseDiff
Returns a new instance of DiscourseDiff.
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# File 'lib/discourse_diff.rb', line 6 def initialize(before, after) @before = before @after = after end |
Instance Method Details
#inline_html ⇒ Object
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# File 'lib/discourse_diff.rb', line 11 def inline_html i = 0 inline = [] while i < block_by_block_diff.size op_code = block_by_block_diff[i][1] if op_code == :common inline << block_by_block_diff[i][0] else if op_code == :delete opposite_op_code = :add klass = "del" first = i second = i + 1 else opposite_op_code = :delete klass = "ins" first = i + 1 second = i end if i + 1 < block_by_block_diff.size && block_by_block_diff[i + 1][1] == opposite_op_code diff = ONPDiff.new( tokenize_html(block_by_block_diff[first][0]), tokenize_html(block_by_block_diff[second][0]), ).diff inline << generate_inline_html(diff) i += 1 else inline << (block_by_block_diff[i][0], klass) end end i += 1 end "<div class=\"inline-diff\">#{inline.join}</div>" end |
#side_by_side_html ⇒ Object
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# File 'lib/discourse_diff.rb', line 49 def side_by_side_html i = 0 left, right = [], [] while i < block_by_block_diff.size op_code = block_by_block_diff[i][1] if op_code == :common left << block_by_block_diff[i][0] right << block_by_block_diff[i][0] else if op_code == :delete opposite_op_code = :add side = left klass = "del" first = i second = i + 1 else opposite_op_code = :delete side = right klass = "ins" first = i + 1 second = i end if i + 1 < block_by_block_diff.size && block_by_block_diff[i + 1][1] == opposite_op_code diff = ONPDiff.new( tokenize_html(block_by_block_diff[first][0]), tokenize_html(block_by_block_diff[second][0]), ).diff deleted, inserted = generate_side_by_side_html(diff) left << deleted right << inserted i += 1 else side << (block_by_block_diff[i][0], klass) end end i += 1 end "<div class=\"revision-content\">#{left.join}</div><div class=\"revision-content\">#{right.join}</div>" end |
#side_by_side_markdown ⇒ Object
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# File 'lib/discourse_diff.rb', line 92 def side_by_side_markdown i = 0 table = ["<table class=\"markdown\">"] while i < line_by_line_diff.size table << "<tr>" op_code = line_by_line_diff[i][1] if op_code == :common table << "<td>#{line_by_line_diff[i][0]}</td>" table << "<td>#{line_by_line_diff[i][0]}</td>" else if op_code == :delete opposite_op_code = :add first = i second = i + 1 else opposite_op_code = :delete first = i + 1 second = i end if i + 1 < line_by_line_diff.size && line_by_line_diff[i + 1][1] == opposite_op_code before_tokens, after_tokens = tokenize_markdown(line_by_line_diff[first][0]), tokenize_markdown(line_by_line_diff[second][0]) if (before_tokens.size - after_tokens.size).abs > MAX_DIFFERENCE before_tokens, after_tokens = tokenize_line(line_by_line_diff[first][0]), tokenize_line(line_by_line_diff[second][0]) end diff = ONPDiff.new(before_tokens, after_tokens).short_diff deleted, inserted = generate_side_by_side_markdown(diff) table << "<td class=\"diff-del\">#{deleted.join}</td>" table << "<td class=\"diff-ins\">#{inserted.join}</td>" i += 1 else if op_code == :delete table << "<td class=\"diff-del\">#{line_by_line_diff[i][0]}</td>" table << "<td></td>" else table << "<td></td>" table << "<td class=\"diff-ins\">#{line_by_line_diff[i][0]}</td>" end end end table << "</tr>" i += 1 end table << "</table>" table.join end |