Class: InLine::Terminal

Inherits:
Object
  • Object
show all
Includes:
HighLine::SystemExtensions
Defined in:
lib/inline/terminal.rb

Overview

The Terminal class defines character codes and code sequences which can be bound to actions by editors. An OS-dependent subclass of InLine::Terminal is automatically instantiated by InLine::Editor.

Direct Known Subclasses

VT220Terminal, WindowsTerminal

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Terminal

Create an instance of InLine::Terminal.



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# File 'lib/inline/terminal.rb', line 31

def initialize
	@keys = 
		{
		:tab => [?\t],
		:return => [?\r],
		:newline => [?\n],
		:escape => [?\e],

		:ctrl_a => [?\C-a],
		:ctrl_b => [?\C-b],
		:ctrl_c => [?\C-c],
		:ctrl_d => [?\C-d],
		:ctrl_e => [?\C-e],
		:ctrl_f => [?\C-f],
		:ctrl_g => [?\C-g],
		:ctrl_h => [?\C-h],
		:ctrl_i => [?\C-i],
		:ctrl_j => [?\C-j],
		:ctrl_k => [?\C-k],
		:ctrl_l => [?\C-l],
		:ctrl_m => [?\C-m],
		:ctrl_n => [?\C-n],
		:ctrl_o => [?\C-o],
		:ctrl_p => [?\C-p],
		:ctrl_q => [?\C-q],
		:ctrl_r => [?\C-r],
		:ctrl_s => [?\C-s],
		:ctrl_t => [?\C-t],
		:ctrl_u => [?\C-u],
		:ctrl_v => [?\C-v],
		:ctrl_w => [?\C-w],
		:ctrl_x => [?\C-x],
		:ctrl_y => [?\C-y],
		:ctrl_z => [?\C-z]
		}
	@escape_codes = []
	@escape_sequences = []
	update
end

Instance Attribute Details

#escape_codes ⇒ Object

Returns the value of attribute escape_codes.



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# File 'lib/inline/terminal.rb', line 25

def escape_codes
  @escape_codes
end

#escape_sequences ⇒ Object (readonly)

Returns the value of attribute escape_sequences.



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# File 'lib/inline/terminal.rb', line 26

def escape_sequences
  @escape_sequences
end

#keys ⇒ Object (readonly)

Returns the value of attribute keys.



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# File 'lib/inline/terminal.rb', line 26

def keys
  @keys
end

Instance Method Details

#update ⇒ Object

Update the terminal escape sequences. This method is called automatically by InLine::Editor#bind().



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# File 'lib/inline/terminal.rb', line 75

def update
	@keys.each_value do |k|
		l = k.length
		if  l > 1 then
			@escape_sequences << k unless @escape_sequences.include? k
		end
	end
end