godot-xterm/addons/godot_xterm/parser/dcs_parser.gd
2020-05-10 01:42:19 +07:00

77 lines
1.6 KiB
GDScript

# Copyright (c) 2020 The GodotXterm authors.
# Copyright (c) 2019 The xterm.js authors. All rights reserved.
# License MIT
extends Reference
const Decoder = preload("res://addons/godot_xterm/input/text_decoder.gd")
const EMPTY_HANDLERS = []
var _handlers: Dictionary = {}
var _active: Array = EMPTY_HANDLERS
var _ident: int = 0
var _handler_fb: Dictionary
func _init():
pass
func set_handler(ident: int, handler):
_handlers[ident] = [handler]
func clear_handler(ident: int):
_handlers.erase(ident)
func set_handler_fallback(target, method):
_handler_fb = {'target': target, 'method': method}
func reset():
if _active.size():
unhook(false)
_active = EMPTY_HANDLERS
_ident = 0
func hook(ident: int, params):
# always reset leftover handlers
reset()
_ident = ident
_active = _handlers[ident] if _handlers.has(ident) else EMPTY_HANDLERS
if _active.empty():
_handler_fb['target'].call(_handler_fb['method'], _ident, 'HOOK', params)
else:
_active.invert()
for handler in _active:
handler.hook(params)
_active.invert()
func put(data: Array, start: int, end: int):
if _active.empty():
_handler_fb['target'].call(_handler_fb['method'], _ident, 'PUT',
Decoder.utf32_to_string(data, start, end))
else:
_active.invert()
for handler in _active:
handler.put(data, start, end)
_active.invert()
func unhook(success: bool):
if _active.empty():
_handler_fb['target'].call(_handler_fb['method'], _ident, 'UNHOOK', success)
else:
_active.invert()
for handler in _active:
if handler.unhook(success) != false:
success = false # will cleanup left over handlers
_active.invert()
_active = EMPTY_HANDLERS
_ident = 0