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|
module CodeRay
module Encoders
# Outputs code highlighted for a color terminal.
#
# Note: This encoder is in beta. It currently doesn't use the Styles.
#
# Alias: +term+
#
# == Authors & License
#
# By Rob Aldred (http://robaldred.co.uk)
#
# Based on idea by Nathan Weizenbaum (http://nex-3.com)
#
# MIT License (http://www.opensource.org/licenses/mit-license.php)
class Terminal < Encoder
register_for :terminal
TOKEN_COLORS = {
:annotation => "\e[35m",
:attribute_name => "\e[33m",
:attribute_value => "\e[31m",
:binary => "\e[1;35m",
:char => {
:self => "\e[36m", :delimiter => "\e[1;34m"
},
:class => "\e[1;35m",
:class_variable => "\e[36m",
:color => "\e[32m",
:comment => "\e[37m",
:complex => "\e[1;34m",
:constant => "\e[1;34m\e[4m",
:decoration => "\e[35m",
:definition => "\e[1;32m",
:directive => "\e[32m\e[4m",
:doc => "\e[46m",
:doctype => "\e[1;30m",
:docstring => "\e[31m\e[4m",
:entity => "\e[33m",
:error => "\e[1;33m\e[41m",
:exception => "\e[1;31m",
:float => "\e[1;35m",
:function => "\e[1;34m",
:global_variable => "\e[42m",
:hex => "\e[1;36m",
:include => "\e[33m",
:integer => "\e[1;34m",
:key => "\e[35m",
:label => "\e[1;15m",
:local_variable => "\e[33m",
:octal => "\e[1;35m",
:operator_name => "\e[1;29m",
:predefined_constant => "\e[1;36m",
:predefined_type => "\e[1;30m",
:predefined => "\e[4m\e[1;34m",
:preprocessor => "\e[36m",
:pseudo_class => "\e[1;34m",
:regexp => {
:self => "\e[31m",
:content => "\e[31m",
:delimiter => "\e[1;29m",
:modifier => "\e[35m",
},
:reserved => "\e[1;31m",
:shell => {
:self => "\e[42m",
:content => "\e[1;29m",
:delimiter => "\e[37m",
},
:string => {
:self => "\e[32m",
:modifier => "\e[1;32m",
:escape => "\e[1;36m",
:delimiter => "\e[1;32m",
:char => "\e[1;36m",
},
:symbol => "\e[1;32m",
:tag => "\e[1;34m",
:type => "\e[1;34m",
:value => "\e[36m",
:variable => "\e[1;34m",
:insert => "\e[42m",
:delete => "\e[41m",
:change => "\e[44m",
:head => "\e[45m"
}
TOKEN_COLORS[:keyword] = TOKEN_COLORS[:reserved]
TOKEN_COLORS[:method] = TOKEN_COLORS[:function]
TOKEN_COLORS[:imaginary] = TOKEN_COLORS[:complex]
TOKEN_COLORS[:begin_group] = TOKEN_COLORS[:end_group] =
TOKEN_COLORS[:escape] = TOKEN_COLORS[:delimiter]
protected
def setup(options)
super
@opened = []
@subcolors = nil
end
public
def text_token text, kind
if color = (@subcolors || TOKEN_COLORS)[kind]
if Hash === color
if color[:self]
color = color[:self]
else
@out << text
return
end
end
@out << color
@out << text.gsub("\n", "\e[0m\n" + color)
@out << "\e[0m"
@out << @subcolors[:self] if @subcolors
else
@out << text
end
end
def begin_group kind
@opened << kind
@out << open_token(kind)
end
alias begin_line begin_group
def end_group kind
if @opened.empty?
# nothing to close
else
@opened.pop
@out << "\e[0m"
@out << open_token(@opened.last)
end
end
def end_line kind
if @opened.empty?
# nothing to close
else
@opened.pop
# whole lines to be highlighted,
# eg. added/modified/deleted lines in a diff
@out << (@line_filler ||= "\t" * 100 + "\e[0m")
@out << open_token(@opened.last)
end
end
private
def open_token kind
if color = TOKEN_COLORS[kind]
if Hash === color
@subcolors = color
color[:self]
else
@subcolors = {}
color
end
else
@subcolors = nil
''
end
end
end
end
end
|
