OpenProject is the leading open source project management software.
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openproject/lib/redmine/unified_diff.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2020 the OpenProject GmbH
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License version 3.
#
# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
# Copyright (C) 2006-2017 Jean-Philippe Lang
# Copyright (C) 2010-2013 the ChiliProject Team
#
# 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.
#
# See docs/COPYRIGHT.rdoc for more details.
#++
module Redmine
# Class used to parse unified diffs
class UnifiedDiff < Array
attr_reader :diff_type
def initialize(diff, options = {})
options.assert_valid_keys(:type, :max_lines)
diff = diff.split("\n") if diff.is_a?(String)
@diff_type = options[:type] || 'inline'
lines = 0
@truncated = false
diff_table = DiffTable.new(@diff_type)
diff.each do |line|
line_encoding = nil
if line.respond_to?(:force_encoding)
line_encoding = line.encoding
# TODO: UTF-16 and Japanese CP932 which is incompatible with ASCII
# In Japan, diffrence between file path encoding
# and file contents encoding is popular.
line.force_encoding('ASCII-8BIT')
end
unless diff_table.add_line line
line.force_encoding(line_encoding) if line_encoding
self << diff_table if diff_table.length > 0
diff_table = DiffTable.new(diff_type)
end
lines += 1
if options[:max_lines] && lines > options[:max_lines]
@truncated = true
break
end
end
self << diff_table unless diff_table.empty?
self
end
def truncated?; @truncated; end
end
end