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module CodeRay |
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module Encoders |
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class HTML |
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# This module is included in the output String of the HTML Encoder. |
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# |
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# It provides methods like wrap, div, page etc. |
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# |
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# Remember to use #clone instead of #dup to keep the modules the object was |
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# extended with. |
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# |
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# TODO: Rewrite this without monkey patching. |
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module Output |
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attr_accessor :css |
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class << self |
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# Raises an exception if an object that doesn't respond to to_str is extended by Output, |
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# to prevent users from misuse. Use Module#remove_method to disable. |
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def extended o # :nodoc: |
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warn "The Output module is intended to extend instances of String, not #{o.class}." unless o.respond_to? :to_str
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end |
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def make_stylesheet css, in_tag = false # :nodoc: |
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sheet = css.stylesheet |
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sheet = <<-'CSS' if in_tag |
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<style type="text/css"> |
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#{sheet}
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</style> |
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CSS |
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sheet |
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end |
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def page_template_for_css css # :nodoc: |
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sheet = make_stylesheet css |
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PAGE.apply 'CSS', sheet |
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end |
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end |
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def wrapped_in? element |
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wrapped_in == element |
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end |
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def wrapped_in |
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@wrapped_in ||= nil |
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end |
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attr_writer :wrapped_in |
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def wrap_in! template |
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Template.wrap! self, template, 'CONTENT' |
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self |
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end |
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def apply_title! title |
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self.sub!(/(<title>)(<\/title>)/) { $1 + title + $2 }
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self |
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end |
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def wrap! element, *args |
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return self if not element or element == wrapped_in |
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case element |
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when :div |
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raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil |
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wrap_in! DIV |
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when :span |
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raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? nil |
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wrap_in! SPAN |
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when :page |
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wrap! :div if wrapped_in? nil |
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raise "Can't wrap %p in %p" % [wrapped_in, element] unless wrapped_in? :div |
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wrap_in! Output.page_template_for_css(@css) |
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if args.first.is_a?(Hash) && title = args.first[:title] |
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apply_title! title |
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end |
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self |
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when nil |
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return self |
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else |
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raise "Unknown value %p for :wrap" % element |
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end |
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@wrapped_in = element |
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self |
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end |
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def stylesheet in_tag = false |
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Output.make_stylesheet @css, in_tag |
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end |
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#-- don't include the templates in docu |
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class Template < String # :nodoc: |
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def self.wrap! str, template, target |
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target = Regexp.new(Regexp.escape("<%#{target}%>"))
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if template =~ target |
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str[0,0] = $` |
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str << $' |
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else |
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raise "Template target <%%%p%%> not found" % target |
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end |
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end |
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def apply target, replacement |
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target = Regexp.new(Regexp.escape("<%#{target}%>"))
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if self =~ target |
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Template.new($` + replacement + $') |
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else |
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raise "Template target <%%%p%%> not found" % target |
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end |
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end |
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end |
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SPAN = Template.new '<span class="CodeRay"><%CONTENT%></span>' |
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DIV = Template.new <<-DIV |
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<div class="CodeRay"> |
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<div class="code"><pre><%CONTENT%></pre></div> |
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</div> |
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DIV |
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|
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TABLE = Template.new <<-TABLE |
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<table class="CodeRay"><tr> |
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<td class="line-numbers" title="double click to toggle" ondblclick="with (this.firstChild.style) { display = (display == '') ? 'none' : '' }"><pre><%LINE_NUMBERS%></pre></td>
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<td class="code"><pre><%CONTENT%></pre></td> |
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</tr></table> |
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TABLE |
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PAGE = Template.new <<-PAGE |
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<!DOCTYPE html> |
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<html> |
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<head> |
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> |
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<title></title> |
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<style type="text/css"> |
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.CodeRay .line-numbers a {
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text-decoration: inherit; |
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color: inherit; |
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} |
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<%CSS%> |
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</style> |
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</head> |
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<body style="background-color: white;"> |
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<%CONTENT%> |
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</body> |
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</html> |
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PAGE |
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end |
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end |
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end |
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end |