/usr/lib/ruby/vendor_ruby/wikicloth/wiki_buffer/html_element.rb is in ruby-wikicloth 0.8.1+dfsg-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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module WikiCloth
class WikiBuffer::HTMLElement < WikiBuffer
ALLOWED_ELEMENTS = ['a','b','i','img','div','span','sup','sub','strike','s','u','font','big','ref','tt','del',
'small','blockquote','strong','pre','code','references','ol','li','ul','dd','dt','dl','center',
'h1','h2','h3','h4','h5','h6','p','table','tr','td','th','tbody','thead','tfoot','abbr','del','ins','em']
ALLOWED_ATTRIBUTES = ['src','id','name','style','class','href','start','value','colspan','align','border',
'cellpadding','cellspacing','name','valign','color','rowspan','nowrap','title','rel','for']
ESCAPED_TAGS = [ 'nowiki','pre','code' ]
SHORT_TAGS = [ 'meta','br','hr']
NO_NEED_TO_CLOSE = ['li','p'] + SHORT_TAGS
DISABLE_GLOBALS_FOR = ESCAPED_TAGS
def initialize(d="",options={},check=nil)
super("",options)
self.buffer_type = "Element"
@in_quotes = false
@in_single_quotes = false
@start_tag = 1
@tag_check = check
end
def debug
case self.element_name
when "template"
self.get_param("__name")
else
ret = self.class.to_s + "["
ret += self.element_name
tmp = self.get_param("id")
ret += tmp.nil? ? "" : "##{tmp}"
ret + "]"
end
end
def skip_html?
return Extension.skip_html?(self.element_name) if Extension.element_exists?(self.element_name)
DISABLE_GLOBALS_FOR.include?(self.element_name) ? true : false
end
def run_globals?
return false if self.in_template? && self.element_name == "noinclude"
return false if !self.in_template? && self.element_name == "includeonly"
return Extension.run_globals?(self.element_name) if Extension.element_exists?(self.element_name)
return DISABLE_GLOBALS_FOR.include?(self.element_name) ? false : true
end
def to_html
if NO_NEED_TO_CLOSE.include?(self.element_name)
return "<#{self.element_name} />" if SHORT_TAGS.include?(self.element_name)
return "</#{self.element_name}><#{self.element_name}>" if @tag_check == self.element_name
end
if ESCAPED_TAGS.include?(self.element_name)
# remove empty first line
self.element_content = $1 if self.element_content =~ /^\s*\n(.*)$/m
# escape all html inside this element
self.element_content = self.element_content.gsub('<','<').gsub('>','>')
# hack to fix <code><nowiki> nested mess
self.element_content = self.element_content.gsub(/<[\/]*\s*nowiki\s*>/,'')
end
case self.element_name
when "template"
@options[:link_handler].cache({ :name => self.element_attributes["__name"], :content => self.element_content, :md5 => self.element_attributes["__hash"] })
return self.element_content
when "noinclude"
return self.in_template? ? "" : self.element_content
when "includeonly"
return self.in_template? ? self.element_content : ""
when "nowiki"
return self.element_content
when "a"
if self.element_attributes['href'] =~ /:\/\//
return @options[:link_handler].external_link(self.element_attributes['href'], self.element_content)
elsif self.element_attributes['href'].nil? || self.element_attributes['href'] =~ /^\s*([\?\/])/
# if a element has no href attribute, or href starts with / or ?
return elem.tag!(self.element_name, self.element_attributes) { |x| x << self.element_content }
end
else
if Extension.element_exists?(self.element_name)
return Extension.html_elements[self.element_name][:klass].new(@options).instance_exec( self, &Extension.html_elements[self.element_name][:block] ).to_s
end
end
tmp = elem.tag!(self.element_name, self.element_attributes) { |x| x << self.element_content }
unless ALLOWED_ELEMENTS.include?(self.element_name)
tmp.gsub!(/[\-!\|&"\{\}\[\]]/) { |r| self.escape_char(r) }
return tmp.gsub('<', '<').gsub('>', '>')
end
tmp
end
def get_attribute_by_name(name)
params.each { |p| return p[:value] if p.kind_of?(Hash) && p[:name] == name }
nil
end
def element_attributes
attr = {}
params.each { |p| attr[p[:name]] = p[:value] if p.kind_of?(Hash) }
if ALLOWED_ELEMENTS.include?(self.element_name.strip.downcase)
attr.delete_if { |key,value| !ALLOWED_ATTRIBUTES.include?(key.strip) }
end
return attr
end
def element_name
@ename ||= ""
end
def element_content
@econtent ||= ""
end
protected
def escape_char(c)
c = case c
when '-' then '-'
when '!' then '!'
when '|' then '|'
when '&' then '&'
when '"' then '"'
when '{' then '{'
when '}' then '}'
when '[' then '['
when ']' then ']'
when '*' then '*'
when '#' then '#'
when ':' then ':'
when ';' then ';'
when "'" then '''
when '=' then '='
else
c
end
return c
end
def elem
Builder::XmlMarkup.new
end
def element_name=(val)
@ename = val
end
def element_content=(val)
@econtent = val
end
def in_quotes?
@in_quotes || @in_single_quotes ? true : false
end
def new_char()
case
# tag name
when @start_tag == 1 && current_char == ' '
self.element_name = self.data.strip.downcase
self.data = ""
@start_tag = 2
# tag is closed <tag/> no attributes
when @start_tag == 1 && previous_char == '/' && current_char == '>'
self.data.chop!
self.element_name = self.data.strip.downcase
self.data = ""
@start_tag = 0
return false
# open tag
when @start_tag == 1 && previous_char != '/' && current_char == '>'
self.element_name = self.data.strip.downcase
self.data = ""
@start_tag = 0
return false if SHORT_TAGS.include?(self.element_name)
return false if self.element_name == @tag_check && NO_NEED_TO_CLOSE.include?(self.element_name)
# new tag attr
when @start_tag == 2 && current_char == ' ' && self.in_quotes? == false
self.current_param = self.data
self.data = ""
self.params << ""
# tag attribute name
when @start_tag == 2 && current_char == '=' && self.in_quotes? == false
self.current_param = self.data
self.data = ""
self.name_current_param()
# tag is now open
when @start_tag == 2 && previous_char != '/' && current_char == '>'
self.current_param = self.data
self.data = ""
@start_tag = 0
return false if SHORT_TAGS.include?(self.element_name)
return false if self.element_name == @tag_check && NO_NEED_TO_CLOSE.include?(self.element_name)
# tag is closed <example/>
when @start_tag == 2 && previous_char == '/' && current_char == '>'
self.current_param = self.data.chop
self.data = ""
@start_tag = 0
return false
# in quotes
when @start_tag == 2 && current_char == "'" && previous_char != '\\' && !@in_quotes
@in_single_quotes = !@in_single_quotes
# in quotes
when @start_tag == 2 && current_char == '"' && previous_char != '\\' && !@in_single_quotes
@in_quotes = !@in_quotes
# start of a closing tag
when @start_tag == 0 && previous_char == '<' && current_char == '/'
self.element_content += self.data.chop
self.data = ""
@start_tag = 5
when @start_tag == 5 && (current_char == '>' || current_char == ' ') && !self.data.blank?
self.data = self.data.strip.downcase
if self.data == self.element_name
self.data = ""
return false
else
if @tag_check == self.data && NO_NEED_TO_CLOSE.include?(self.element_name)
self.data = "</#{self.data}>"
return false
else
self.element_content += skip_html? ? "</#{self.data}>" : "</#{self.data}>"
@start_tag = 0
self.data = ""
end
end
else
if @start_tag == 0 && ESCAPED_TAGS.include?(self.element_name)
self.data << self.escape_char(current_char)
else
self.data << current_char
end
end
return true
end
end
end
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