OpenProject is the leading open source project management software.
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openproject/app/models/wikis/annotate.rb

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#-- encoding: UTF-8
#-- copyright
# OpenProject is an open source project management software.
# Copyright (C) 2012-2021 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) 2006-2013 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 COPYRIGHT and LICENSE files for more details.
#++
class Wikis::Annotate
attr_reader :lines, :content
def initialize(content)
@content = content
current = content
current_lines = current.data.text.split(/\r?\n/)
@lines = current_lines.map { |t| [nil, nil, t] }
positions = []
current_lines.size.times { |i| positions << i }
while current.previous
d = current.previous.data.text.split(/\r?\n/).diff(current.data.text.split(/\r?\n/)).diffs.flatten
d.each_slice(3) do |s|
sign = s[0]
line = s[1]
if sign == '+' && positions[line] && positions[line] != -1 && @lines[positions[line]][0].nil?
@lines[positions[line]][0] = current.version
@lines[positions[line]][1] = current.data.author
end
end
d.each_slice(3) do |s|
sign = s[0]
line = s[1]
if sign == '-'
positions.insert(line, -1)
else
positions[line] = nil
end
end
positions.compact!
# Stop if every line is annotated
break unless @lines.detect { |line| line[0].nil? }
current = current.previous
end
@lines.each { |line| line[0] ||= current.version }
end
end