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module CodeRay module Encoders
class HTML
class CSS
def initialize stylesheet = TOKENS
@classes = Hash.new
parse stylesheet
end
def [] *styles
cl = @classes[styles.first]
return '' unless cl
style = false
1.upto(cl.size + 1) do |offset|
break if style = cl[styles[offset .. -1]]
end
return style
end
private
CSS_CLASS_PATTERN = /
( (?: # $1 = classes
\s* \. [-\w]+
)+ )
\s* \{
( [^\}]* ) # $2 = style
\} \s*
|
( . ) # $3 = error
/mx
def parse stylesheet
stylesheet.scan CSS_CLASS_PATTERN do |classes, style, error|
raise "CSS parse error: '#{error.inspect}' not recognized" if error
styles = classes.scan(/[-\w]+/)
cl = styles.pop
@classes[cl] ||= Hash.new
@classes[cl][styles] = style.strip
end
end
MAIN = <<-'MAIN'
.CodeRay {
background-color: #f8f8f8;
border: 1px solid silver;
font-family: 'Courier New', 'Terminal', monospace;
color: black;
}
.CodeRay pre { margin: 0px; }
div.CodeRay { }
span.CodeRay { white-space: pre; border: 0; }
table.CodeRay { border-collapse: collapse; }
table.CodeRay td { padding: 2px 4px; vertical-align: top; }
.CodeRay .line_numbers {
background-color: #def;
color: gray;
text-align: right;
}
.CodeRay .line_numbers tt { font-weight: bold; }
.CodeRay .code {
}
.CodeRay .code pre { overflow: auto; }
MAIN
TOKENS = <<-'TOKENS'
.af { color:#00C; }
.an { color:#007; }
.av { color:#700; }
.aw { color:#C00; }
.bi { color:#509; font-weight:bold; }
.c { color:#888; }
.ch { color:#04D; }
.ch .k { color:#04D; }
.ch .dl { color:#039; }
.cl { color:#B06; font-weight:bold; }
.co { color:#036; font-weight:bold; }
.cr { color:#0A0; }
.cv { color:#369; }
.df { color:#099; font-weight:bold; }
.di { color:#088; font-weight:bold; }
.dl { color:black; }
.do { color:#970; }
.ds { color:#D42; font-weight:bold; }
.e { color:#666; font-weight:bold; }
.er { color:#F00; background-color:#FAA; }
.ex { color:#F00; font-weight:bold; }
.fl { color:#60E; font-weight:bold; }
.fu { color:#06B; font-weight:bold; }
.gv { color:#d70; font-weight:bold; }
.hx { color:#058; font-weight:bold; }
.i { color:#00D; font-weight:bold; }
.ic { color:#B44; font-weight:bold; }
.in { color:#B2B; font-weight:bold; }
.iv { color:#33B; }
.la { color:#970; font-weight:bold; }
.lv { color:#963; }
.oc { color:#40E; font-weight:bold; }
.on { color:#000; font-weight:bold; }
.pc { color:#038; font-weight:bold; }
.pd { color:#369; font-weight:bold; }
.pp { color:#579; }
.pt { color:#339; font-weight:bold; }
.r { color:#080; font-weight:bold; }
.rx { background-color:#fff0ff; }
.rx .k { color:#808; }
.rx .dl { color:#404; }
.rx .mod { color:#C2C; }
.rx .fu { color:#404; font-weight: bold; }
.s { background-color:#fff0f0; }
.s .s { background-color:#ffe0e0; }
.s .s .s { background-color:#ffd0d0; }
.s .k { color:#D20; }
.s .dl { color:#710; }
.sh { background-color:#f0fff0; }
.sh .k { color:#2B2; }
.sh .dl { color:#161; }
.sy { color:#A60; }
.sy .k { color:#A60; }
.sy .dl { color:#630; }
.ta { color:#070; }
.tf { color:#070; font-weight:bold; }
.ts { color:#D70; font-weight:bold; }
.ty { color:#339; font-weight:bold; }
.v { color:#036; }
.xt { color:#444; }
TOKENS
DEFAULT_STYLESHEET = MAIN + TOKENS.gsub(/^(?!$)/, '.CodeRay ')
end
end
end end
if $0 == __FILE__
require 'pp'
pp CodeRay::Encoders::HTML::CSS.new
end
|
