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|
require 'cgi'
module Rugments
module Formatters
class HTML < Formatter
tag('html')
def initialize(
nowrap: false,
cssclass: 'highlight',
linenos: nil,
linenostart: 1,
lineanchors: false,
lineanchorsid: 'L',
anchorlinenos: false,
inline_theme: nil
)
@nowrap = nowrap
@cssclass = cssclass
@linenos = linenos
@linenostart = linenostart
@lineanchors = lineanchors
@lineanchorsid = lineanchorsid
@anchorlinenos = anchorlinenos
@inline_theme = inline_theme
end
def format(tokens)
case
when @linenos == 'table'
format_tableized(tokens)
when @linenos == 'inline'
format_untableized(tokens)
else
format_untableized(tokens)
end
end
private
def format_untableized(tokens)
data = process_tokens(tokens)
html = ''
html << "<pre class=\"#{@cssclass}\"><code>" unless @nowrap
html << create_lines(data[:code])
html << "</code></pre>\n" unless @nowrap
html
end
def format_tableized(tokens)
data = process_tokens(tokens)
html = ''
html << "<div class=\"#{@cssclass}\">\n" unless @nowrap
html << "<table><tbody>\n"
html << "<td class=\"linenos\"><pre>"
html << create_linenos(data[:numbers])
html << "</pre></td>\n"
html << "<td class=\"lines\"><pre><code>"
html << create_lines(data[:code])
html << "</code></pre></td>\n"
html << "</tbody></table>\n"
html << "</div>\n" unless @nowrap
end
def process_tokens(tokens)
num_lines = 0
last_val = ''
formatted = ''
tokens.each do |tok, val|
last_val = val
num_lines += val.scan(/\n/).size
formatted << span(tok, val)
end
numbers = (@linenostart..num_lines + @linenostart - 1).to_a
{ numbers: numbers, code: formatted }
end
def create_linenos(numbers)
if @anchorlinenos
numbers.map! do |number|
"<a href=\"##{@lineanchorsid}#{number}\">#{number}</a>"
end
end
numbers.join("\n")
end
def create_lines(formatted)
if @lineanchors
lines = formatted.split("\n")
lines = lines.each_with_index.map do |line, index|
number = index + @linenostart
if @linenos == 'inline'
"<a name=\"L#{number}\"></a>" \
"<span class=\"linenos\">#{number}</span><span id=\"#{@lineanchorsid}#{number}\" class=\"line\">#{line}</span>"
else
"<span id=\"#{@lineanchorsid}#{number}\" class=\"line\">#{line}</span>"
end
end
lines.join("\n")
else
if @linenos == 'inline'
lines = formatted.split("\n")
lines = lines.each_with_index.map do |line, index|
number = index + @linenostart
"<span class=\"linenos\">#{number}</span>#{line}"
end
lines.join("\n")
else
formatted
end
end
end
def span(tok, val)
# http://stackoverflow.com/a/1600584/2587286
val = CGI.escapeHTML(val)
if tok.shortname.empty?
val
else
if @inline_theme
theme = Theme.find(@inline_theme).new
rules = theme.style_for(tok).rendered_rules
"<span style=\"#{rules.to_a.join(';')}\">#{val}</span>"
else
"<span class=\"#{tok.shortname}\">#{val}</span>"
end
end
end
end
end
end
|
