Module: IRB::Color
- Defined in:
- lib/irb/color.rb
Constant Summary collapse
- CLEAR =
0
- BOLD =
1
- UNDERLINE =
4
- REVERSE =
7
- RED =
31
- GREEN =
32
- YELLOW =
33
- BLUE =
34
- MAGENTA =
35
- CYAN =
36
Class Method Summary collapse
- .clear ⇒ Object
- .colorable? ⇒ Boolean
- .colorize(text, seq) ⇒ Object
-
.colorize_code(code, complete: true) ⇒ 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
.clear ⇒ Object
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# File 'lib/irb/color.rb', line 96 def clear return '' unless colorable? "\e[#{CLEAR}m" end |
.colorable? ⇒ Boolean
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# File 'lib/irb/color.rb', line 71 def colorable? $stdout.tty? && supported? && (/mswin|mingw/ =~ RUBY_PLATFORM || (ENV.key?('TERM') && ENV['TERM'] != 'dumb')) end |
.colorize(text, seq) ⇒ Object
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# File 'lib/irb/color.rb', line 101 def colorize(text, seq) return text unless colorable? seq = seq.map { |s| "\e[#{const_get(s)}m" }.join('') "#{seq}#{text}#{clear}" end |
.colorize_code(code, complete: true) ⇒ 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 110 def colorize_code(code, complete: true) return code unless colorable? symbol_state = SymbolState.new colored = +'' length = 0 scan(code, allow_last_error: !complete) do |token, str, expr| 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) else colored << line end end length += str.bytesize end # give up colorizing incomplete Ripper tokens if length != code.bytesize return Reline::Unicode.escape_for_print(code) end colored end |
.inspect_colorable?(obj, seen: {}.compare_by_identity) ⇒ Boolean
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# File 'lib/irb/color.rb', line 75 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 |