Class: IRB::StdioInputMethod
- Inherits:
-
InputMethod
- Object
- InputMethod
- IRB::StdioInputMethod
- Defined in:
- lib/irb/input-method.rb
Direct Known Subclasses
Constant Summary
Constants inherited from InputMethod
InputMethod::BASIC_WORD_BREAK_CHARACTERS
Instance Attribute Summary
Attributes inherited from InputMethod
Instance Method Summary collapse
-
#encoding ⇒ Object
The external encoding for standard input.
-
#eof? ⇒ Boolean
Whether the end of this input method has been reached, returns
true
if there is no more data to read. -
#gets ⇒ Object
Reads the next line from this input method.
-
#initialize ⇒ StdioInputMethod
constructor
Creates a new input method object.
-
#inspect ⇒ Object
For debug message.
-
#line(line_no) ⇒ Object
Returns the current line number for #io.
- #prompting? ⇒ Boolean
-
#readable_after_eof? ⇒ Boolean
Whether this input method is still readable when there is no more data to read.
Methods inherited from InputMethod
#support_history_saving?, #winsize
Constructor Details
permalink #initialize ⇒ StdioInputMethod
Creates a new input method object
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# File 'lib/irb/input-method.rb', line 59 def initialize @line_no = 0 @line = [] @stdin = IO.open(STDIN.to_i, :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-") @stdout = IO.open(STDOUT.to_i, 'w', :external_encoding => IRB.conf[:LC_MESSAGES].encoding, :internal_encoding => "-") end |
Instance Method Details
permalink #encoding ⇒ Object
The external encoding for standard input.
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# File 'lib/irb/input-method.rb', line 115 def encoding @stdin.external_encoding end |
permalink #eof? ⇒ Boolean
Whether the end of this input method has been reached, returns true
if there is no more data to read.
See IO#eof? for more information.
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# File 'lib/irb/input-method.rb', line 82 def eof? if @stdin.wait_readable(0.00001) c = @stdin.getc result = c.nil? ? true : false @stdin.ungetc(c) unless c.nil? result else # buffer is empty false end end |
permalink #gets ⇒ Object
Reads the next line from this input method.
See IO#gets for more information.
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# File 'lib/irb/input-method.rb', line 69 def gets # Workaround for debug compatibility test https://github.com/ruby/debug/pull/1100 puts if ENV['RUBY_DEBUG_TEST_UI'] print @prompt line = @stdin.gets @line[@line_no += 1] = line end |
permalink #inspect ⇒ Object
For debug message
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# File 'lib/irb/input-method.rb', line 120 def inspect 'StdioInputMethod' end |
permalink #line(line_no) ⇒ Object
Returns the current line number for #io.
#line counts the number of times #gets is called.
See IO#lineno for more information.
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# File 'lib/irb/input-method.rb', line 110 def line(line_no) @line[line_no] end |
permalink #prompting? ⇒ Boolean
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# File 'lib/irb/input-method.rb', line 101 def prompting? STDIN.tty? end |
permalink #readable_after_eof? ⇒ Boolean
Whether this input method is still readable when there is no more data to read.
See IO#eof for more information.
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# File 'lib/irb/input-method.rb', line 97 def readable_after_eof? true end |