Contents

#
# Represent a single piece of a diff.
#
class PrettyDiff::Chunk #:nodoc:
  attr_reader :diff, :meta_info, :input, :lines

  def initialize(diff, meta_info, input)
    @diff = diff
    @meta_info = meta_info
    @input = input
  end

  # Generate HTML presentation for a Chunk. Return a string.
  def to_html
    # We have to find lines before we can call line numbers methods.
    find_lines!
    generator.generate
  end

  # Return LineNumbers object that represents two columns of numbers
  # that will be displayed on the left of the HTML presentation.
  #
  # IMPORTANT! Before calling this method it's essential to call "find_lines!" first,
  # otherwise the array will be empty.
  def line_numbers
    @_line_numbers ||= PrettyDiff::LineNumbers.new(diff, meta_info)
  end

private

  def generator
    @_generator ||= PrettyDiff::ChunkGenerator.new(self)
  end

  # Parse the input searching for lines. Initialize Line object for every line.
  # Return an array of Line objects.
  def find_lines!
    @lines = []
    @lines.tap do
      input.split(/\r?\n/).each do |line_str|
        line = PrettyDiff::Line.new(diff, line_str)
        next if line.ignore?
        @lines << line
        line_numbers.act_on_line(line)
      end
    end
  end

end

Version data entries

6 entries across 6 versions & 1 rubygems

Version	Path
pretty_diff-0.9.3	lib/pretty_diff/chunk.rb
pretty_diff-0.9.2	lib/pretty_diff/chunk.rb
pretty_diff-0.9.1	lib/pretty_diff/chunk.rb
pretty_diff-0.8.1	lib/pretty_diff/chunk.rb
pretty_diff-0.8.0	lib/pretty_diff/chunk.rb
pretty_diff-0.7.0	lib/pretty_diff/chunk.rb