diff options
Diffstat (limited to 'lib/coderay/encoders')
| -rw-r--r-- | lib/coderay/encoders/terminal_256.rb | 174 |
1 files changed, 174 insertions, 0 deletions
diff --git a/lib/coderay/encoders/terminal_256.rb b/lib/coderay/encoders/terminal_256.rb new file mode 100644 index 0000000..ea041bf --- /dev/null +++ b/lib/coderay/encoders/terminal_256.rb @@ -0,0 +1,174 @@ +module CodeRay + module Encoders + + require 'paint' + + # 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 Terminal256 < Encoder + + register_for :terminal_256 + + TOKEN_COLORS = { + :annotation => '35', + :attribute_name => '33', + :attribute_value => '31', + :binary => '1;35', + :char => { + :self => '36', :delimiter => '1;34' + }, + :class => '1;35', + :class_variable => '36', + :color => '32', + :comment => '37', + :complex => '1;34', + :constant => ['1;34', '4'], + :decoration => '35', + :definition => '1;32', + :directive => ['32', '4'], + :doc => '46', + :doctype => '1;30', + :doc_string => ['31', '4'], + :entity => '33', + :error => ['1;33', '41'], + :exception => '1;31', + :float => '1;35', + :function => '1;34', + :global_variable => '42', + :hex => '1;36', + :include => '33', + :integer => '1;34', + :key => '35', + :label => '1;15', + :local_variable => '33', + :octal => '1;35', + :operator_name => '1;29', + :predefined_constant => '1;36', + :predefined_type => '1;30', + :predefined => ['4', '1;34'], + :preprocessor => '36', + :pseudo_class => '1;34', + :regexp => { + :self => '31', + :content => '31', + :delimiter => '1;29', + :modifier => '35', + :function => '1;29' + }, + :reserved => '1;31', + :shell => { + :self => '42', + :content => '1;29', + :delimiter => '37', + }, + :string => { + :self => '32', + :modifier => '1;32', + :escape => '1;36', + :delimiter => '1;32', + }, + :symbol => '1;32', + :tag => '1;34', + :type => '1;34', + :value => '36', + :variable => '1;34', + + :insert => '42', + :delete => '41', + :change => '44', + :head => '45' + } + 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 << Paint.color(color) + @out << text.gsub("\n", Paint::NOTHING + "\n" + Paint.color(color)) + @out << Paint::NOTHING + @out << Paint.color(@subcolors[:self]) if @subcolors && @subcolors[:self] + 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 << Paint::NOTHING + @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 << "\t" * 100 + Paint::NOTHING + @out << open_token(@opened.last) + end + end + + private + + def open_token kind + if color = TOKEN_COLORS[kind] + if Hash === color + @subcolors = color + Paint.color(color[:self]) if color[:self] + else + @subcolors = {} + Paint.color(color) + end + else + @subcolors = nil + '' + end + end + end + end +end
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