Class: WikiCloth::WikiBuffer::Var

Inherits:
WikiCloth::WikiBuffer show all
Defined in:
lib/wikicloth/wiki_buffer/var.rb

Instance Method Summary collapse

Methods inherited from WikiCloth::WikiBuffer

#add_char, #add_word, #buffer_type, #buffers, #check_globals, #data, #debug, #eof, #get_param, #in_template?, #params, #run_globals?

Constructor Details

#initialize(data = "", options = {}) ⇒ Var

Returns a new instance of Var.



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 8

def initialize(data="",options={})
  super(data,options)
  self.buffer_type = "var"
  @in_quotes = false
  @tag_start = true
  @tag_size = 2
  @close_size = 2
  @fname = nil
end

Instance Method Details

#default_functions(name, params) ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 82

def default_functions(name,params)
  case name
  when "#if"
    params.first.blank? ? params[2] : params[1]
  when "#switch"
    match = params.first
    default = nil
    for p in params[1..-1]
      temp = p.split("=")
      if temp.length == 1 && p == params.last
        return p
      elsif temp.instance_of?(Array) && temp.length > 1
        test = temp.first.strip
        default = temp[1].strip if test == "#default"
        return temp[1].strip if test == match
      end
    end
    default.nil? ? "" : default
  when "#expr"
    begin
      ExpressionParser::Parser.new.parse(params.first)
    rescue RuntimeError
      "Expression error: #{$!}"
    end
  when "#ifexpr"
    val = false
    begin
      val = ExpressionParser::Parser.new.parse(params.first)
    rescue RuntimeError
    end
    if val
      params[1]
    else
      params[2]
    end
  when "#ifeq"
    if params[0] =~ /^[0-9A-Fa-f]+$/ && params[1] =~ /^[0-9A-Fa-f]+$/
      params[0].to_i == params[1].to_i ? params[2] : params[3]
    else
      params[0] == params[1] ? params[2] : params[3]
    end
  when "#len"
    params.first.length
  when "#sub"
    params.first[params[1].to_i,params[2].to_i]
  when "#pad"
    case params[3]
    when "right"
      params[0].ljust(params[1].to_i,params[2])
    when "center"
      params[0].center(params[1].to_i,params[2])
    else
      params[0].rjust(params[1].to_i,params[2])
    end
  when "#iferror"
    params.first =~ /error/ ? params[1] : params[2]
  when "#capture"
    @options[:params][params.first] = params[1]
    ""
  when "urlencode"
    URI.escape(params.first, Regexp.new("[^#{URI::PATTERN::UNRESERVED}]"))
  when "lc"
    params.first.downcase
  when "uc"
    params.first.upcase
  when "ucfirst"
    params.first.capitalize
  when "lcfirst"
    params.first[0,1].downcase + params.first[1,-1]
  when "plural"
    params.first.to_i > 1 ? params[1] : params[2]
  when "ns"
    values = { "" => "", "0" => "", "1" => "Talk", "talk" => "Talk", "2" => "User", "user" => "User",
	"3" => "User talk", "user_talk" => "User talk", "4" => "Meta", "project" => "Meta",
	"5" => "Meta talk", "project_talk" => "Meta talk", "6" => "File", "image" => "File",
	"7" => "File talk", "image_talk" => "File talk", "8" => "MediaWiki", "mediawiki" => "MediaWiki",
	"9" => "MediaWiki talk", "mediawiki_talk" => "MediaWiki talk", "10" => "Template",
	"template" => "Template", "11" => "Template talk", "template_talk" => "Template talk",
	"12" => "Help", "help" => "Help", "13" => "Help talk", "help_talk" => "Help talk",
	"14" => "Category", "category" => "Category", "15" => "Category talk", "category_talk" => "Category talk",
	"-2" => "Media", "media" => "Media", "-1" => "Special", "special" => "Special" }
    values[params.first.gsub(/\s+/,'_').downcase]
  when "debug"
    ret = nil
    case params.first
    when "param"
      @options[:buffer].buffers.reverse.each do |b|
        if b.instance_of?(WikiBuffer::HTMLElement) && b.element_name == "template"
           ret = b.get_param(params[1])
        end
      end
      ret
    when "buffer"
      ret = "<pre>"
      buffer = @options[:buffer].buffers
      buffer.each do |b|
        ret += " --- #{b.class}"
        ret += b.instance_of?(WikiBuffer::HTMLElement) ? " -- #{b.element_name}\n" : " -- #{b.data}\n"
      end
      "#{ret}</pre>"
    end
  end
end

#function_name ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 42

def function_name
  @fname
end

#is_function? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wikicloth/wiki_buffer/var.rb', line 190

def is_function?
  self.function_name.nil? || self.function_name.blank? ? false : true
end

#is_param? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wikicloth/wiki_buffer/var.rb', line 186

def is_param?
  @tag_size == 3 ? true : false
end

#skip_html? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wikicloth/wiki_buffer/var.rb', line 30

def skip_html?
  false
end

#skip_links? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/wikicloth/wiki_buffer/var.rb', line 26

def skip_links?
  true
end

#tag_size ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 18

def tag_size
  @tag_size
end

#tag_size=(val) ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 22

def tag_size=(val)
  @tag_size = val
end

#tag_start ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 34

def tag_start
  @tag_start
end

#tag_start=(val) ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 38

def tag_start=(val)
  @tag_start = val
end

#to_s ⇒ Object 



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# File 'lib/wikicloth/wiki_buffer/var.rb', line 46

def to_s
  if self.is_function?
    ret = default_functions(function_name,params.collect { |p| p.strip })
    ret ||= @options[:link_handler].function(function_name, params.collect { |p| p.strip })
    ret.to_s
  elsif self.is_param?
    ret = nil
    @options[:buffer].buffers.reverse.each do |b|
      ret = b.get_param(params[0].downcase,params[1]) if b.instance_of?(WikiBuffer::HTMLElement) && b.element_name == "template"
    end
    ret.to_s
  else
    # put template at beginning of buffer
    template_stack = @options[:buffer].buffers.collect { |b| b.get_param("__name") if b.instance_of?(WikiBuffer::HTMLElement) && 
      b.element_name == "template" }.compact
    if template_stack.last == params[0]
      debug_tree = @options[:buffer].buffers.collect { |b| b.debug }.join("-->")
      "<span class=\"error\">Template loop detected: &#123;&#123;#{debug_tree}&#125;&#125;</span>"
    else
      ret = @options[:link_handler].include_resource("#{params[0]}".strip,params[1..-1]).to_s
      ret.gsub!(/<!--(.|\s)*?-->/,"")
      count = 0
      tag_attr = self.params[1..-1].collect { |p|
        if p.instance_of?(Hash)
          "#{p[:name].downcase}=\"#{p[:value]}\""
        else
          count += 1
          "#{count}=\"#{p}\""
        end
      }.join(" ")
      self.data = ret.blank? ? "" : "<template __name=\"#{params[0]}\" #{tag_attr}>#{ret}</template>"
      ""
    end
  end
end