containerd/vendor/github.com/Azure/go-ansiterm/escape_state.go

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package ansiterm
type EscapeState struct {
BaseState
}
func (escState EscapeState) Handle(b byte) (s State, e error) {
logger.Infof("EscapeState::Handle %#x", b)
nextState, err := escState.BaseState.Handle(b)
if nextState != nil || err != nil {
return nextState, err
}
switch {
case b == ANSI_ESCAPE_SECONDARY:
return escState.parser.CsiEntry, nil
case b == ANSI_OSC_STRING_ENTRY:
return escState.parser.OscString, nil
case sliceContains(Executors, b):
return escState, escState.parser.execute()
case sliceContains(EscapeToGroundBytes, b):
return escState.parser.Ground, nil
case sliceContains(Intermeds, b):
return escState.parser.EscapeIntermediate, nil
}
return escState, nil
}
func (escState EscapeState) Transition(s State) error {
logger.Infof("Escape::Transition %s --> %s", escState.Name(), s.Name())
escState.BaseState.Transition(s)
switch s {
case escState.parser.Ground:
return escState.parser.escDispatch()
case escState.parser.EscapeIntermediate:
return escState.parser.collectInter()
}
return nil
}
func (escState EscapeState) Enter() error {
escState.parser.clear()
return nil
}