Module: IRB::Color
- Defined in:
- lib/irb/color.rb
Constant Summary collapse
- CLEAR =
0
- BOLD =
1
- UNDERLINE =
4
- REVERSE =
7
- BLACK =
30
- RED =
31
- GREEN =
32
- YELLOW =
33
- BLUE =
34
- MAGENTA =
35
- CYAN =
36
- WHITE =
37
Class Method Summary collapse
- .clear(colorable: colorable?) ) ⇒ Object
- .colorable? ⇒ Boolean
- .colorize(text, seq, colorable: colorable?) ) ⇒ Object
-
.colorize_code(code, complete: true, ignore_error: false, colorable: colorable?, , local_variables: []) ⇒ Object
If ‘complete` is false (code is incomplete), this does not warn compile_error.
- .inspect_colorable?(obj, seen: {}.compare_by_identity) ⇒ Boolean
Class Method Details
permalink .clear(colorable: colorable?) ) ⇒ Object
[View source]
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# File 'lib/irb/color.rb', line 115 def clear(colorable: colorable?) return '' unless colorable "\e[#{CLEAR}m" end |
permalink .colorable? ⇒ Boolean
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# File 'lib/irb/color.rb', line 82 def colorable? supported = $stdout.tty? && (/mswin|mingw/.match?(RUBY_PLATFORM) || (ENV.key?('TERM') && ENV['TERM'] != 'dumb')) # because ruby/debug also uses irb's color module selectively, # irb won't be activated in that case. if IRB.respond_to?(:conf) supported && !!IRB.conf.fetch(:USE_COLORIZE, true) else supported end end |
permalink .colorize(text, seq, colorable: colorable?) ) ⇒ Object
[View source]
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# File 'lib/irb/color.rb', line 120 def colorize(text, seq, colorable: colorable?) return text unless colorable seq = seq.map { |s| "\e[#{const_get(s)}m" }.join('') "#{seq}#{text}#{clear(colorable: colorable)}" end |
permalink .colorize_code(code, complete: true, ignore_error: false, colorable: colorable?, , local_variables: []) ⇒ Object
If ‘complete` is false (code is incomplete), this does not warn compile_error. This option is needed to avoid warning a user when the compile_error is happening because the input is not wrong but just incomplete.
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# File 'lib/irb/color.rb', line 129 def colorize_code(code, complete: true, ignore_error: false, colorable: colorable?, local_variables: []) return code unless colorable symbol_state = SymbolState.new colored = +'' lvars_code = RubyLex.generate_local_variables_assign_code(local_variables) code_with_lvars = lvars_code ? "#{lvars_code}\n#{code}" : code scan(code_with_lvars, allow_last_error: !complete) do |token, str, expr| # handle uncolorable code if token.nil? colored << Reline::Unicode.escape_for_print(str) next end # IRB::ColorPrinter skips colorizing fragments with any invalid token if ignore_error && ERROR_TOKENS.include?(token) return Reline::Unicode.escape_for_print(code) end in_symbol = symbol_state.scan_token(token) str.each_line do |line| line = Reline::Unicode.escape_for_print(line) if seq = dispatch_seq(token, expr, line, in_symbol: in_symbol) colored << seq.map { |s| "\e[#{s}m" }.join('') colored << line.sub(/\Z/, clear(colorable: colorable)) else colored << line end end end if lvars_code raise "#{lvars_code.dump} should have no \\n" if lvars_code.include?("\n") colored.sub!(/\A.+\n/, '') # delete_prefix lvars_code with colors end colored end |
permalink .inspect_colorable?(obj, seen: {}.compare_by_identity) ⇒ Boolean
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# File 'lib/irb/color.rb', line 94 def inspect_colorable?(obj, seen: {}.compare_by_identity) case obj when String, Symbol, Regexp, Integer, Float, FalseClass, TrueClass, NilClass true when Hash without_circular_ref(obj, seen: seen) do obj.all? { |k, v| inspect_colorable?(k, seen: seen) && inspect_colorable?(v, seen: seen) } end when Array without_circular_ref(obj, seen: seen) do obj.all? { |o| inspect_colorable?(o, seen: seen) } end when Range inspect_colorable?(obj.begin, seen: seen) && inspect_colorable?(obj.end, seen: seen) when Module !obj.name.nil? else false end end |