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