instiki/lib/maruku/helpers.rb

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2007-01-22 15:36:51 +01:00
#--
# Copyright (C) 2006 Andrea Censi <andrea (at) rubyforge.org>
#
# This file is part of Maruku.
#
# Maruku 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.
#
# Maruku 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 Maruku; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
#++
# A series of helper functions for creating elements: they hide the
# particular internal representation.
#
# Please, always use these instead of creating MDElement.
#
module MaRuKu
module Helpers
# if the first is a md_ial, it is used as such
def md_el(node_type, children=[], meta={}, al=nil)
if (e=children.first).kind_of?(MDElement) and
e.node_type == :ial then
if al
al += e.ial
else
al = e.ial
end
children.shift
end
e = MDElement.new(node_type, children, meta, al)
e.doc = @doc
return e
end
def md_header(level, children, al=nil)
md_el(:header, children, {:level => level}, al)
end
# Inline code
def md_code(code, al=nil)
md_el(:inline_code, [], {:raw_code => code}, al)
end
# Code block
def md_codeblock(source, al=nil)
md_el(:code, [], {:raw_code => source}, al)
end
def md_quote(children, al=nil)
md_el(:quote, children, {}, al)
end
def md_li(children, want_my_par, al=nil)
md_el(:li, children, {:want_my_paragraph=>want_my_par}, al)
end
def md_footnote(footnote_id, children, al=nil)
md_el(:footnote, children, {:footnote_id=>footnote_id}, al)
end
def md_abbr_def(abbr, text, al=nil)
md_el(:abbr_def, [], {:abbr=>abbr, :text=>text}, al)
end
def md_abbr(abbr, title)
md_el(:abbr, [abbr], {:title=>title})
end
def md_html(raw_html, al=nil)
e = md_el(:raw_html, [], {:raw_html=>raw_html})
begin
# remove newlines and whitespace at begin
# end end of string, or else REXML gets confused
raw_html = raw_html.gsub(/\A\s*</,'<').
gsub(/>[\s\n]*\Z/,'>')
raw_html = "<marukuwrap>#{raw_html}</marukuwrap>"
e.instance_variable_set :@parsed_html,
REXML::Document.new(raw_html)
rescue
# tell_user "Malformed block of HTML:\n"+
# add_tabs(raw_html,1,'|')
# " #{raw_html.inspect}\n\n"+ex.inspect
end
e
end
def md_link(children, ref_id, al=nil)
md_el(:link, children, {:ref_id=>ref_id.downcase}, al)
end
def md_im_link(children, url, title=nil, al=nil)
md_el(:im_link, children, {:url=>url,:title=>title}, al)
end
def md_image(children, ref_id, al=nil)
md_el(:image, children, {:ref_id=>ref_id}, al)
end
def md_im_image(children, url, title=nil, al=nil)
md_el(:im_image, children, {:url=>url,:title=>title},al)
end
def md_em(children, al=nil)
md_el(:emphasis, [children].flatten, {}, al)
end
def md_br()
md_el(:linebreak, [], {}, nil)
end
def md_hrule()
md_el(:hrule, [], {}, nil)
end
def md_strong(children, al=nil)
md_el(:strong, [children].flatten, {}, al)
end
def md_emstrong(children, al=nil)
md_strong(md_em(children), al)
end
# <http://www.example.com/>
def md_url(url, al=nil)
md_el(:immediate_link, [], {:url=>url}, al)
end
# <andrea@rubyforge.org>
# <mailto:andrea@rubyforge.org>
def md_email(email, al=nil)
md_el(:email_address, [], {:email=>email}, al)
end
def md_entity(entity_name, al=nil)
md_el(:entity, [], {:entity_name=>entity_name}, al)
end
# Markdown extra
def md_foot_ref(ref_id, al=nil)
md_el(:footnote_reference, [], {:footnote_id=>ref_id}, al)
end
def md_par(children, al=nil)
md_el(:paragraph, children, meta={}, al)
end
# [1]: http://url [properties]
def md_ref_def(ref_id, url, title=nil, meta={}, al=nil)
meta[:url] = url
meta[:ref_id] = ref_id
meta[:title] = title if title
md_el(:ref_definition, [], meta, al)
end
# inline attribute list
def md_ial(al)
al = Maruku::AttributeList.new(al) if
not al.kind_of?Maruku::AttributeList
md_el(:ial, [], {:ial=>al})
end
# Attribute list definition
def md_ald(id, al)
md_el(:ald, [], {:ald_id=>id,:ald=>al})
end
# Server directive <?target code... ?>
def md_xml_instr(target, code)
md_el(:xml_instr, [], {:target=>target, :code=>code})
end
end
end
module MaRuKu
class MDElement
# outputs abbreviated form (this should be eval()uable to get the document)
def inspect2
s =
case @node_type
when :paragraph
"md_par(%s)" % children_inspect
when :footnote_reference
"md_foot_ref(%s)" % self.footnote_id.inspect
when :entity
"md_entity(%s)" % self.entity_name.inspect
when :email_address
"md_email(%s)" % self.email.inspect
when :inline_code
"md_code(%s)" % self.raw_code.inspect
when :raw_html
"md_html(%s)" % self.raw_html.inspect
when :emphasis
"md_em(%s)" % children_inspect
when :strong
"md_strong(%s)" % children_inspect
when :immediate_link
"md_url(%s)" % self.url.inspect
when :image
"md_image(%s, %s)" % [
children_inspect,
self.ref_id.inspect]
when :im_image
"md_im_image(%s, %s, %s)" % [
children_inspect,
self.url.inspect,
self.title.inspect]
when :link
"md_link(%s,%s)" % [
children_inspect, self.ref_id.inspect]
when :im_link
"md_im_link(%s, %s, %s)" % [
children_inspect,
self.url.inspect,
self.title.inspect,
]
when :ref_definition
"md_ref_def(%s, %s, %s)" % [
self.ref_id.inspect,
self.url.inspect,
self.title.inspect
]
when :ial
"md_ial(%s)" % self.ial.inspect
else
return nil
end
if @al and not @al.empty? then
s = s.chop + ", #{@al.inspect})"
end
s
end
end
end