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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
module WikiFormatting
@@formatters = {}
class << self
def map
yield self
end
def register(name, formatter, helper)
raise ArgumentError, "format name '#{name}' is already taken" if @@formatters[name.to_s]
@@formatters[name.to_s] = {:formatter => formatter, :helper => helper}
end
def formatter_for(name)
entry = @@formatters[name.to_s]
(entry && entry[:formatter]) || Redmine::WikiFormatting::NullFormatter::Formatter
end
def helper_for(name)
entry = @@formatters[name.to_s]
(entry && entry[:helper]) || Redmine::WikiFormatting::NullFormatter::Helper
end
def format_names
@@formatters.keys.map
end
def to_html(format, text, options = {}, &block)
text = if Setting.cache_formatted_text? && text.size > 2.kilobyte && cache_store && cache_key = cache_key_for(format, options[:object], options[:attribute])
# Text retrieved from the cache store may be frozen
# We need to dup it so we can do in-place substitutions with gsub!
cache_store.fetch cache_key do
formatter_for(format).new(text).to_html
end.dup
else
formatter_for(format).new(text).to_html
end
if block_given?
execute_macros(text, block)
end
text
end
# Returns a cache key for the given text +format+, +object+ and +attribute+ or nil if no caching should be done
def cache_key_for(format, object, attribute)
if object && attribute && !object.new_record? && object.respond_to?(:updated_on) && !format.blank?
"formatted_text/#{format}/#{object.class.model_name.cache_key}/#{object.id}-#{attribute}-#{object.updated_on.to_s(:number)}"
end
end
# Returns the cache store used to cache HTML output
def cache_store
ActionController::Base.cache_store
end
MACROS_RE = /
(!)? # escaping
(
\{\{ # opening tag
([\w]+) # macro name
(\(([^\}]*)\))? # optional arguments
\}\} # closing tag
)
/x unless const_defined?(:MACROS_RE)
# Macros substitution
def execute_macros(text, macros_runner)
text.gsub!(MACROS_RE) do
esc, all, macro = $1, $2, $3.downcase
args = ($5 || '').split(',').each(&:strip)
if esc.nil?
begin
macros_runner.call(macro, args)
rescue => e
"<div class=\"flash error\">Error executing the <strong>#{macro}</strong> macro (#{e})</div>"
end || all
else
all
end
end
end
end
# Default formatter module
module NullFormatter
class Formatter
include ActionView::Helpers::TagHelper
include ActionView::Helpers::TextHelper
include ActionView::Helpers::UrlHelper
def initialize(text)
@text = text
end
def to_html(*args)
simple_format(auto_link(CGI::escapeHTML(@text)))
end
end
module Helper
def wikitoolbar_for(field_id)
end
def heads_for_wiki_formatter
end
def initial_page_content(page)
page.pretty_title.to_s
end
end
end
end
end
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