diff vendor/gems/coderay-0.9.7/lib/coderay/encoders/html/output.rb @ 523:0b6c82dead28 luisf

Merge from branch "cannam"

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/gems/coderay-0.9.7/lib/coderay/encoders/html/output.rb	Mon Jul 25 14:23:37 2011 +0100
@@ -0,0 +1,206 @@
+module CodeRay
+module Encoders
+
+  class HTML
+
+    # This module is included in the output String from thew HTML Encoder.
+    #
+    # It provides methods like wrap, div, page etc.
+    #
+    # Remember to use #clone instead of #dup to keep the modules the object was
+    # extended with.
+    #
+    # TODO: more doc.
+    module Output
+
+      require 'coderay/encoders/html/numerization.rb'
+
+      attr_accessor :css
+
+      class << self
+
+        # This makes Output look like a class.
+        #
+        # Example:
+        #
+        #  a = Output.new '<span class="co">Code</span>'
+        #  a.wrap! :page
+        def new string, css = CSS.new, element = nil
+          output = string.clone.extend self
+          output.wrapped_in = element
+          output.css = css
+          output
+        end
+
+        # Raises an exception if an object that doesn't respond to to_str is extended by Output,
+        # to prevent users from misuse. Use Module#remove_method to disable.
+        def extended o
+          warn "The Output module is intended to extend instances of String, not #{o.class}." unless o.respond_to? :to_str
+        end
+
+        def make_stylesheet css, in_tag = false
+          sheet = css.stylesheet
+          sheet = <<-CSS if in_tag
+<style type="text/css">
+#{sheet}
+</style>
+          CSS
+          sheet
+        end
+
+        def page_template_for_css css
+          sheet = make_stylesheet css
+          PAGE.apply 'CSS', sheet
+        end
+
+        # Define a new wrapper. This is meta programming.
+        def wrapper *wrappers
+          wrappers.each do |wrapper|
+            define_method wrapper do |*args|
+              wrap wrapper, *args
+            end
+            define_method "#{wrapper}!".to_sym do |*args|
+              wrap! wrapper, *args
+            end
+          end
+        end
+
+      end
+
+      wrapper :div, :span, :page
+
+      def wrapped_in? element
+        wrapped_in == element
+      end
+
+      def wrapped_in
+        @wrapped_in ||= nil
+      end
+      attr_writer :wrapped_in
+
+      def wrap_in template
+        clone.wrap_in! template
+      end
+
+      def wrap_in! template
+        Template.wrap! self, template, 'CONTENT'
+        self
+      end
+      
+      def apply_title! title
+        self.sub!(/(<title>)(<\/title>)/) { $1 + title + $2 }
+        self
+      end
+
+      def wrap! element, *args
+        return self if not element or element == wrapped_in
+        case element
+        when :div
+          raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil
+          wrap_in! DIV
+        when :span
+          raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil
+          wrap_in! SPAN
+        when :page
+          wrap! :div if wrapped_in? nil
+          raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? :div
+          wrap_in! Output.page_template_for_css(@css)
+          if args.first.is_a?(Hash) && title = args.first[:title]
+            apply_title! title
+          end
+          self
+        when nil
+          return self
+        else
+          raise "Unknown value %p for :wrap" % element
+        end
+        @wrapped_in = element
+        self
+      end
+
+      def wrap *args
+        clone.wrap!(*args)
+      end
+
+      def stylesheet in_tag = false
+        Output.make_stylesheet @css, in_tag
+      end
+
+      class Template < String
+
+        def self.wrap! str, template, target
+          target = Regexp.new(Regexp.escape("<%#{target}%>"))
+          if template =~ target
+            str[0,0] = $`
+            str << $'
+          else
+            raise "Template target <%%%p%%> not found" % target
+          end
+        end
+
+        def apply target, replacement
+          target = Regexp.new(Regexp.escape("<%#{target}%>"))
+          if self =~ target
+            Template.new($` + replacement + $')
+          else
+            raise "Template target <%%%p%%> not found" % target
+          end
+        end
+
+        module Simple
+          def ` str  #` <-- for stupid editors
+            Template.new str
+          end
+        end
+      end
+
+      extend Template::Simple
+
+#-- don't include the templates in docu
+
+      SPAN = `<span class="CodeRay"><%CONTENT%></span>`
+
+      DIV = <<-`DIV`
+<div class="CodeRay">
+  <div class="code"><pre><%CONTENT%></pre></div>
+</div>
+      DIV
+
+      TABLE = <<-`TABLE`
+<table class="CodeRay"><tr>
+  <td class="line_numbers" title="click to toggle" onclick="with (this.firstChild.style) { display = (display == '') ? 'none' : '' }"><pre><%LINE_NUMBERS%></pre></td>
+  <td class="code"><pre ondblclick="with (this.style) { overflow = (overflow == 'auto' || overflow == '') ? 'visible' : 'auto' }"><%CONTENT%></pre></td>
+</tr></table>
+      TABLE
+      # title="double click to expand"
+
+      LIST = <<-`LIST`
+<ol class="CodeRay">
+<%CONTENT%>
+</ol>
+      LIST
+
+      PAGE = <<-`PAGE`
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="de">
+<head>
+  <meta http-equiv="content-type" content="text/html; charset=utf-8" />
+  <title></title>
+  <style type="text/css">
+<%CSS%>
+  </style>
+</head>
+<body style="background-color: white;">
+
+<%CONTENT%>
+</body>
+</html>
+      PAGE
+
+    end
+
+  end
+
+end
+end