Class: Gitlab::Diff::Parser

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/gitlab/diff/parser.rb

Instance Method Summary collapse

Instance Method Details

#empty? ⇒ Boolean

Returns:

  • (Boolean) 

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# File 'lib/gitlab/diff/parser.rb', line 59

def empty?
  @lines.empty?
end

#parse(lines) ⇒ Object 


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# File 'lib/gitlab/diff/parser.rb', line 6

def parse(lines)
  return [] if lines.blank?

  @lines = lines
  line_obj_index = 0
  line_old = 1
  line_new = 1
  type = nil

  # By returning an Enumerator we make it possible to search for a single line (with #find)
  # without having to instantiate all the others that come after it.
  Enumerator.new do |yielder|
    @lines.each do |line|
      next if filename?(line)
  
      full_line = line.gsub(/\n/, '')
  
      if line.match(/^@@ -/)
        type = "match"
  
        line_old = line.match(/\-[0-9]*/)[0].to_i.abs rescue 0
        line_new = line.match(/\+[0-9]*/)[0].to_i.abs rescue 0
  
        next if line_old <= 1 && line_new <= 1 #top of file
        yielder << Gitlab::Diff::Line.new(full_line, type, line_obj_index, line_old, line_new)
        line_obj_index += 1
        next
      elsif line[0] == '\\'
        type = 'nonewline'
        yielder << Gitlab::Diff::Line.new(full_line, type, line_obj_index, line_old, line_new)
        line_obj_index += 1
      else
        type = identification_type(line)
        yielder << Gitlab::Diff::Line.new(full_line, type, line_obj_index, line_old, line_new)
        line_obj_index += 1
      end
  
  
      case line[0]
      when "+"
        line_new += 1
      when "-"
        line_old += 1
      when "\\"
        # No increment
      else
        line_new += 1
        line_old += 1
      end
    end
  end
end