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module CodeRay
module Encoders
class HTML < Encoder
include Streamable
register_for :html
FILE_EXTENSION = 'html'
DEFAULT_OPTIONS = {
:tab_width => 8,
:level => :xhtml,
:css => :class,
:wrap => :page,
:line_numbers => nil,
:line_number_start => 1,
:bold_every => 10,
}
NUMERIZABLE_WRAPPINGS = [:div, :page]
require 'coderay/encoders/helpers/html_helper'
require 'coderay/encoders/helpers/html_output'
require 'coderay/encoders/helpers/html_css'
def initialize(*)
super
@last_options = nil
end
protected
HTML_ESCAPE = { #:nodoc:
'&' => '&',
'"' => '"',
'>' => '>',
'<' => '<',
}
# This is to prevent illegal HTML.
# Strange chars should still be avoided in codes.
evil_chars = Array(0x00...0x20) - [?n, ?t]
evil_chars.each { |i| HTML_ESCAPE[i.chr] = ' ' }
ansi_chars = Array(0x7f..0xff)
ansi_chars.each { |i| HTML_ESCAPE[i.chr] = '&#%d;' % i }
# \x9 (\t) and \xA (\n) not included
HTML_ESCAPE_PATTERN = /[&"><\0-\x8\xB-\x1f\x7f-\xff]/
def setup options
if options[:line_numbers] and not NUMERIZABLE_WRAPPINGS.include? options[:wrap]
warn ':line_numbers wanted, but :wrap is %p' % options[:wrap]
end
super
return if options == @last_options
@last_options = options
@HTML_ESCAPE = HTML_ESCAPE.dup
@HTML_ESCAPE["\t"] = ' ' * options[:tab_width]
@opened = [nil]
@css = CSS.new
case options[:css]
when :class
@css_style = Hash.new do |h, k|
if k.is_a? Array
type = k.first
else
type = k
end
c = ClassOfKind[type]
if c == :NO_HIGHLIGHT
h[k] = false
else
if options[:debug]
debug_info = ' title="%p"' % [ k ]
else
debug_info = ''
end
h[k] = '<span%s class="%s">' % [debug_info, c]
end
end
when :style
@css_style = Hash.new do |h, k|
if k.is_a? Array
styles = k.dup
else
styles = [k]
end
styles.map! { |c| ClassOfKind[c] }
if styles.first == :NO_HIGHLIGHT
h[k] = false
else
if options[:debug]
debug_info = ' title="%s"' % [ styles.inspect.gsub(/#{HTML_ESCAPE_PATTERN}/o) { |m| @HTML_ESCAPE[m] } ]
else
debug_info = ''
end
style = @css[*styles]
h[k] =
if style
'<span%s style="%s">' % [debug_info, style]
else
false
end
end
end
else
raise "Unknown value %p for :css." % options[:css]
end
end
def finish options
not_needed = @opened.shift
@out << '</span>' * @opened.size
@out.extend Output
@out.numerize! options[:line_numbers], options # if options[:line_numbers]
@out.wrap! options[:wrap] # if options[:wrap]
#require 'pp'
#pp @css_style, @css_style.size
super
end
def token text, type
if text.is_a? String
if text =~ /#{HTML_ESCAPE_PATTERN}/o
text = text.gsub(/#{HTML_ESCAPE_PATTERN}/o) { |m| @HTML_ESCAPE[m] }
end
@opened[0] = type
style = @css_style[@opened]
if style
@out << style << text << '</span>'
else
@out << text
end
else
case text
when :open
@opened[0] = type
@out << @css_style[@opened]
@opened << type
when :close
unless @opened.empty?
raise 'Not Token to be closed.' unless @opened.size > 1
@out << '</span>'
@opened.pop
end
when nil
raise 'Token with nil as text was given: %p' % [[text, type]]
else
raise 'unknown token kind: %p' % text
end
end
end
end
end
end
|
