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comparison vendor/gems/coderay-1.0.0/lib/coderay/encoders/html/output.rb @ 909:cbb26bc654de redmine-1.3

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Update to Redmine 1.3-stable branch (Redmine SVN rev 8964)
author Chris Cannam
date Fri, 24 Feb 2012 19:09:32 +0000
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908:c6c2cbd0afee 909:cbb26bc654de
1 module CodeRay
2 module Encoders
3
4 class HTML
5
6 # This module is included in the output String of the HTML Encoder.
7 #
8 # It provides methods like wrap, div, page etc.
9 #
10 # Remember to use #clone instead of #dup to keep the modules the object was
11 # extended with.
12 #
13 # TODO: Rewrite this without monkey patching.
14 module Output
15
16 attr_accessor :css
17
18 class << self
19
20 # Raises an exception if an object that doesn't respond to to_str is extended by Output,
21 # to prevent users from misuse. Use Module#remove_method to disable.
22 def extended o # :nodoc:
23 warn "The Output module is intended to extend instances of String, not #{o.class}." unless o.respond_to? :to_str
24 end
25
26 def make_stylesheet css, in_tag = false # :nodoc:
27 sheet = css.stylesheet
28 sheet = <<-'CSS' if in_tag
29 <style type="text/css">
30 #{sheet}
31 </style>
32 CSS
33 sheet
34 end
35
36 def page_template_for_css css # :nodoc:
37 sheet = make_stylesheet css
38 PAGE.apply 'CSS', sheet
39 end
40
41 end
42
43 def wrapped_in? element
44 wrapped_in == element
45 end
46
47 def wrapped_in
48 @wrapped_in ||= nil
49 end
50 attr_writer :wrapped_in
51
52 def wrap_in! template
53 Template.wrap! self, template, 'CONTENT'
54 self
55 end
56
57 def apply_title! title
58 self.sub!(/(<title>)(<\/title>)/) { $1 + title + $2 }
59 self
60 end
61
62 def wrap! element, *args
63 return self if not element or element == wrapped_in
64 case element
65 when :div
66 raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil
67 wrap_in! DIV
68 when :span
69 raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil
70 wrap_in! SPAN
71 when :page
72 wrap! :div if wrapped_in? nil
73 raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? :div
74 wrap_in! Output.page_template_for_css(@css)
75 if args.first.is_a?(Hash) && title = args.first[:title]
76 apply_title! title
77 end
78 self
79 when nil
80 return self
81 else
82 raise "Unknown value %p for :wrap" % element
83 end
84 @wrapped_in = element
85 self
86 end
87
88 def stylesheet in_tag = false
89 Output.make_stylesheet @css, in_tag
90 end
91
92 #-- don't include the templates in docu
93
94 class Template < String # :nodoc:
95
96 def self.wrap! str, template, target
97 target = Regexp.new(Regexp.escape("<%#{target}%>"))
98 if template =~ target
99 str[0,0] = $`
100 str << $'
101 else
102 raise "Template target <%%%p%%> not found" % target
103 end
104 end
105
106 def apply target, replacement
107 target = Regexp.new(Regexp.escape("<%#{target}%>"))
108 if self =~ target
109 Template.new($` + replacement + $')
110 else
111 raise "Template target <%%%p%%> not found" % target
112 end
113 end
114
115 end
116
117 SPAN = Template.new '<span class="CodeRay"><%CONTENT%></span>'
118
119 DIV = Template.new <<-DIV
120 <div class="CodeRay">
121 <div class="code"><pre><%CONTENT%></pre></div>
122 </div>
123 DIV
124
125 TABLE = Template.new <<-TABLE
126 <table class="CodeRay"><tr>
127 <td class="line-numbers" title="double click to toggle" ondblclick="with (this.firstChild.style) { display = (display == '') ? 'none' : '' }"><pre><%LINE_NUMBERS%></pre></td>
128 <td class="code"><pre><%CONTENT%></pre></td>
129 </tr></table>
130 TABLE
131
132 PAGE = Template.new <<-PAGE
133 <!DOCTYPE html>
134 <html>
135 <head>
136 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
137 <title></title>
138 <style type="text/css">
139 .CodeRay .line-numbers a {
140 text-decoration: inherit;
141 color: inherit;
142 }
143 <%CSS%>
144 </style>
145 </head>
146 <body style="background-color: white;">
147
148 <%CONTENT%>
149 </body>
150 </html>
151 PAGE
152
153 end
154
155 end
156
157 end
158 end