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# frozen_string_literal: true
# Redmine - project management software
# Copyright (C) 2006-2023 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
module WikiFormatting
module SectionHelper
def get_section(index)
section = extract_sections(index)[1]
hash = Digest::MD5.hexdigest(section)
return section, hash
end
def update_section(index, update, hash=nil)
t = extract_sections(index)
if hash.present? && hash != Digest::MD5.hexdigest(t[1])
raise Redmine::WikiFormatting::StaleSectionError
end
t[1] = update unless t[1].blank?
t.reject(&:blank?).join "\n\n"
end
def extract_sections(index)
sections = [+'', +'', +'']
offset = 0
i = 0
l = 1
inside_pre = false
@text.split(/(^(?:\S+\r?\n\r?(?:\=+|\-+)|#+.+|(?:~~~|```).*)\s*$)/).each do |part|
level = nil
if part =~ /\A(~{3,}|`{3,})(\s*\S+)?\s*$/
if !inside_pre
inside_pre = true
elsif !$2
inside_pre = false
end
elsif inside_pre
# nop
elsif part =~ /\A(#+).+/
level = $1.size
elsif part =~ /\A.+\r?\n\r?(\=+|\-+)\s*$/
level = $1.include?('=') ? 1 : 2
end
if level
i += 1
if offset == 0 && i == index
# entering the requested section
offset = 1
l = level
elsif offset == 1 && i > index && level <= l
# leaving the requested section
offset = 2
end
end
sections[offset] << part
end
sections.map(&:strip)
end
end
end
end
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