Syntax::Convertors::HTML

A simple class for converting a text into HTML.

Public Instance Methods

convert( text, pre=true ) click to toggle source

Converts the given text to HTML, using spans to represent token groups of any type but :normal (which is always unhighlighted). If pre is true, the html is automatically wrapped in pre tags. 

    # File lib/syntax/convertors/html.rb, line 12
12:       def convert( text, pre=true )
13:         html = ""
14:         html << "<pre>" if pre
15:         regions = []
16:         @tokenizer.tokenize( text ) do |tok|
17:           value = html_escape(tok)
18:           case tok.instruction
19:             when :region_close then
20:               regions.pop
21:               html << "</span>"
22:             when :region_open then
23:               regions.push tok.group
24:               html << "<span class=\"#{tok.group}\">#{value}"
25:             else
26:               if tok.group == ( regions.last || :normal )
27:                 html << value
28:               else
29:                 html << "<span class=\"#{tok.group}\">#{value}</span>"
30:               end
31:           end
32:         end
33:         html << "</span>" while regions.pop
34:         html << "</pre>" if pre
35:         html
36:       end

Private Instance Methods

html_escape( string ) click to toggle source

Replaces some characters with their corresponding HTML entities. 

    # File lib/syntax/convertors/html.rb, line 41
41:         def html_escape( string )
42:           string.gsub( /&/, "&amp;" ).
43:                  gsub( /</, "&lt;" ).
44:                  gsub( />/, "&gt;" ).
45:                  gsub( /"/, "&quot;" )
46:         end

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