Class: RawLine::Terminal

Inherits:
Object
  • Object
show all
Includes:
HighLine::SystemExtensions
Defined in:
lib/rawline/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 RawLine::Terminal is automatically instantiated by RawLine::Editor.

Direct Known Subclasses

VT220Terminal, WindowsTerminal

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Terminal

Create an instance of RawLine::Terminal.



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

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

		:ctrl_a => [?\C-a.ord],
		:ctrl_b => [?\C-b.ord],
		:ctrl_c => [?\C-c.ord],
		:ctrl_d => [?\C-d.ord],
		:ctrl_e => [?\C-e.ord],
		:ctrl_f => [?\C-f.ord],
		:ctrl_g => [?\C-g.ord],
		:ctrl_h => [?\C-h.ord],
		:ctrl_i => [?\C-i.ord],
		:ctrl_j => [?\C-j.ord],
		:ctrl_k => [?\C-k.ord],
		:ctrl_l => [?\C-l.ord],
		:ctrl_m => [?\C-m.ord],
		:ctrl_n => [?\C-n.ord],
		:ctrl_o => [?\C-o.ord],
		:ctrl_p => [?\C-p.ord],
		:ctrl_q => [?\C-q.ord],
		:ctrl_r => [?\C-r.ord],
		:ctrl_s => [?\C-s.ord],
		:ctrl_t => [?\C-t.ord],
		:ctrl_u => [?\C-u.ord],
		:ctrl_v => [?\C-v.ord],
		:ctrl_w => [?\C-w.ord],
		:ctrl_x => [?\C-x.ord],
		:ctrl_y => [?\C-y.ord],
		:ctrl_z => [?\C-z.ord]
		}
	@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/rawline/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/rawline/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/rawline/terminal.rb', line 26

def keys
  @keys
end

Instance Method Details

#update ⇒ Object

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



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# File 'lib/rawline/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