Chris@0: # redMine - project management software Chris@0: # Copyright (C) 2006-2008 Jean-Philippe Lang Chris@0: # Chris@0: # This program is free software; you can redistribute it and/or Chris@0: # modify it under the terms of the GNU General Public License Chris@0: # as published by the Free Software Foundation; either version 2 Chris@0: # of the License, or (at your option) any later version. Chris@0: # Chris@0: # This program is distributed in the hope that it will be useful, Chris@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of Chris@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the Chris@0: # GNU General Public License for more details. Chris@0: # Chris@0: # You should have received a copy of the GNU General Public License Chris@0: # along with this program; if not, write to the Free Software Chris@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. Chris@0: Chris@0: module Redmine Chris@0: # Class used to parse unified diffs Chris@0: class UnifiedDiff < Array Chris@0: def initialize(diff, options={}) Chris@0: options.assert_valid_keys(:type, :max_lines) Chris@0: diff = diff.split("\n") if diff.is_a?(String) Chris@0: diff_type = options[:type] || 'inline' Chris@0: Chris@0: lines = 0 Chris@0: @truncated = false Chris@0: diff_table = DiffTable.new(diff_type) Chris@0: diff.each do |line| Chris@0: unless diff_table.add_line line Chris@0: self << diff_table if diff_table.length > 1 Chris@0: diff_table = DiffTable.new(diff_type) Chris@0: end Chris@0: lines += 1 Chris@0: if options[:max_lines] && lines > options[:max_lines] Chris@0: @truncated = true Chris@0: break Chris@0: end Chris@0: end Chris@0: self << diff_table unless diff_table.empty? Chris@0: self Chris@0: end Chris@0: Chris@0: def truncated?; @truncated; end Chris@0: end Chris@0: Chris@0: # Class that represents a file diff Chris@0: class DiffTable < Hash Chris@0: attr_reader :file_name, :line_num_l, :line_num_r Chris@0: Chris@0: # Initialize with a Diff file and the type of Diff View Chris@0: # The type view must be inline or sbs (side_by_side) Chris@0: def initialize(type="inline") Chris@0: @parsing = false Chris@0: @nb_line = 1 Chris@0: @start = false Chris@0: @before = 'same' Chris@0: @second = true Chris@0: @type = type Chris@0: end Chris@0: Chris@0: # Function for add a line of this Diff Chris@0: # Returns false when the diff ends Chris@0: def add_line(line) Chris@0: unless @parsing Chris@0: if line =~ /^(---|\+\+\+) (.*)$/ Chris@0: @file_name = $2 Chris@0: elsif line =~ /^@@ (\+|\-)(\d+)(,\d+)? (\+|\-)(\d+)(,\d+)? @@/ Chris@0: @line_num_l = $2.to_i Chris@0: @line_num_r = $5.to_i Chris@0: @parsing = true Chris@0: end Chris@0: else Chris@0: if line =~ /^[^\+\-\s@\\]/ Chris@0: @parsing = false Chris@0: return false Chris@0: elsif line =~ /^@@ (\+|\-)(\d+)(,\d+)? (\+|\-)(\d+)(,\d+)? @@/ Chris@0: @line_num_l = $2.to_i Chris@0: @line_num_r = $5.to_i Chris@0: else Chris@0: @nb_line += 1 if parse_line(line, @type) Chris@0: end Chris@0: end Chris@0: return true Chris@0: end Chris@0: Chris@0: def inspect Chris@0: puts '### DIFF TABLE ###' Chris@0: puts "file : #{file_name}" Chris@0: self.each do |d| Chris@0: d.inspect Chris@0: end Chris@0: end Chris@0: Chris@0: private Chris@0: # Test if is a Side By Side type Chris@0: def sbs?(type, func) Chris@0: if @start and type == "sbs" Chris@0: if @before == func and @second Chris@0: tmp_nb_line = @nb_line Chris@0: self[tmp_nb_line] = Diff.new Chris@0: else Chris@0: @second = false Chris@0: tmp_nb_line = @start Chris@0: @start += 1 Chris@0: @nb_line -= 1 Chris@0: end Chris@0: else Chris@0: tmp_nb_line = @nb_line Chris@0: @start = @nb_line Chris@0: self[tmp_nb_line] = Diff.new Chris@0: @second = true Chris@0: end Chris@0: unless self[tmp_nb_line] Chris@0: @nb_line += 1 Chris@0: self[tmp_nb_line] = Diff.new Chris@0: else Chris@0: self[tmp_nb_line] Chris@0: end Chris@0: end Chris@0: Chris@0: # Escape the HTML for the diff Chris@0: def escapeHTML(line) Chris@0: CGI.escapeHTML(line) Chris@0: end Chris@0: Chris@0: def parse_line(line, type="inline") Chris@0: if line[0, 1] == "+" Chris@0: diff = sbs? type, 'add' Chris@0: @before = 'add' Chris@0: diff.line_right = escapeHTML line[1..-1] Chris@0: diff.nb_line_right = @line_num_r Chris@0: diff.type_diff_right = 'diff_in' Chris@0: @line_num_r += 1 Chris@0: true Chris@0: elsif line[0, 1] == "-" Chris@0: diff = sbs? type, 'remove' Chris@0: @before = 'remove' Chris@0: diff.line_left = escapeHTML line[1..-1] Chris@0: diff.nb_line_left = @line_num_l Chris@0: diff.type_diff_left = 'diff_out' Chris@0: @line_num_l += 1 Chris@0: true Chris@0: elsif line[0, 1] =~ /\s/ Chris@0: @before = 'same' Chris@0: @start = false Chris@0: diff = Diff.new Chris@0: diff.line_right = escapeHTML line[1..-1] Chris@0: diff.nb_line_right = @line_num_r Chris@0: diff.line_left = escapeHTML line[1..-1] Chris@0: diff.nb_line_left = @line_num_l Chris@0: self[@nb_line] = diff Chris@0: @line_num_l += 1 Chris@0: @line_num_r += 1 Chris@0: true Chris@0: elsif line[0, 1] = "\\" Chris@0: true Chris@0: else Chris@0: false Chris@0: end Chris@0: end Chris@0: end Chris@0: Chris@0: # A line of diff Chris@0: class Diff Chris@0: attr_accessor :nb_line_left Chris@0: attr_accessor :line_left Chris@0: attr_accessor :nb_line_right Chris@0: attr_accessor :line_right Chris@0: attr_accessor :type_diff_right Chris@0: attr_accessor :type_diff_left Chris@0: Chris@0: def initialize() Chris@0: self.nb_line_left = '' Chris@0: self.nb_line_right = '' Chris@0: self.line_left = '' Chris@0: self.line_right = '' Chris@0: self.type_diff_right = '' Chris@0: self.type_diff_left = '' Chris@0: end Chris@0: Chris@0: def inspect Chris@0: puts '### Start Line Diff ###' Chris@0: puts self.nb_line_left Chris@0: puts self.line_left Chris@0: puts self.nb_line_right Chris@0: puts self.line_right Chris@0: end Chris@0: end Chris@0: end