Bump cadvisor dependencies to latest head.

vendor/github.com/Azure/go-ansiterm/parser.go

@@ -0,0 +1,137 @@
+package ansiterm
+
+import (
+	"errors"
+	"fmt"
+	"io/ioutil"
+	"os"
+
+	"github.com/Sirupsen/logrus"
+)
+
+var logger *logrus.Logger
+
+type AnsiParser struct {
+	currState          State
+	eventHandler       AnsiEventHandler
+	context            *AnsiContext
+	CsiEntry           State
+	CsiParam           State
+	DcsEntry           State
+	Escape             State
+	EscapeIntermediate State
+	Error              State
+	Ground             State
+	OscString          State
+	stateMap           []State
+}
+
+func CreateParser(initialState string, evtHandler AnsiEventHandler) *AnsiParser {
+	logFile := ioutil.Discard
+
+	if isDebugEnv := os.Getenv(LogEnv); isDebugEnv == "1" {
+		logFile, _ = os.Create("ansiParser.log")
+	}
+
+	logger = &logrus.Logger{
+		Out:       logFile,
+		Formatter: new(logrus.TextFormatter),
+		Level:     logrus.InfoLevel,
+	}
+
+	parser := &AnsiParser{
+		eventHandler: evtHandler,
+		context:      &AnsiContext{},
+	}
+
+	parser.CsiEntry = CsiEntryState{BaseState{name: "CsiEntry", parser: parser}}
+	parser.CsiParam = CsiParamState{BaseState{name: "CsiParam", parser: parser}}
+	parser.DcsEntry = DcsEntryState{BaseState{name: "DcsEntry", parser: parser}}
+	parser.Escape = EscapeState{BaseState{name: "Escape", parser: parser}}
+	parser.EscapeIntermediate = EscapeIntermediateState{BaseState{name: "EscapeIntermediate", parser: parser}}
+	parser.Error = ErrorState{BaseState{name: "Error", parser: parser}}
+	parser.Ground = GroundState{BaseState{name: "Ground", parser: parser}}
+	parser.OscString = OscStringState{BaseState{name: "OscString", parser: parser}}
+
+	parser.stateMap = []State{
+		parser.CsiEntry,
+		parser.CsiParam,
+		parser.DcsEntry,
+		parser.Escape,
+		parser.EscapeIntermediate,
+		parser.Error,
+		parser.Ground,
+		parser.OscString,
+	}
+
+	parser.currState = getState(initialState, parser.stateMap)
+
+	logger.Infof("CreateParser: parser %p", parser)
+	return parser
+}
+
+func getState(name string, states []State) State {
+	for _, el := range states {
+		if el.Name() == name {
+			return el
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) Parse(bytes []byte) (int, error) {
+	for i, b := range bytes {
+		if err := ap.handle(b); err != nil {
+			return i, err
+		}
+	}
+
+	return len(bytes), ap.eventHandler.Flush()
+}
+
+func (ap *AnsiParser) handle(b byte) error {
+	ap.context.currentChar = b
+	newState, err := ap.currState.Handle(b)
+	if err != nil {
+		return err
+	}
+
+	if newState == nil {
+		logger.Warning("newState is nil")
+		return errors.New(fmt.Sprintf("New state of 'nil' is invalid."))
+	}
+
+	if newState != ap.currState {
+		if err := ap.changeState(newState); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func (ap *AnsiParser) changeState(newState State) error {
+	logger.Infof("ChangeState %s --> %s", ap.currState.Name(), newState.Name())
+
+	// Exit old state
+	if err := ap.currState.Exit(); err != nil {
+		logger.Infof("Exit state '%s' failed with : '%v'", ap.currState.Name(), err)
+		return err
+	}
+
+	// Perform transition action
+	if err := ap.currState.Transition(newState); err != nil {
+		logger.Infof("Transition from '%s' to '%s' failed with: '%v'", ap.currState.Name(), newState.Name, err)
+		return err
+	}
+
+	// Enter new state
+	if err := newState.Enter(); err != nil {
+		logger.Infof("Enter state '%s' failed with: '%v'", newState.Name(), err)
+		return err
+	}
+
+	ap.currState = newState
+	return nil
+}