1 files changed, 173 insertions, 0 deletions
diff --git a/vendor/github.com/vbauerster/mpb/v4/decor/decorator.go b/vendor/github.com/vbauerster/mpb/v4/decor/decorator.go
new file mode 100644
index 000000000..5c0d16880
--- /dev/null
+++ b/vendor/github.com/vbauerster/mpb/v4/decor/decorator.go
@@ -0,0 +1,173 @@
+package decor
+
+import (
+	"fmt"
+	"time"
+	"unicode/utf8"
+)
+
+const (
+	// DidentRight bit specifies identation direction.
+	// |foo   |b     | With DidentRight
+	// |   foo|     b| Without DidentRight
+	DidentRight = 1 << iota
+
+	// DextraSpace bit adds extra space, makes sense with DSyncWidth only.
+	// When DidentRight bit set, the space will be added to the right,
+	// otherwise to the left.
+	DextraSpace
+
+	// DSyncWidth bit enables same column width synchronization.
+	// Effective with multiple bars only.
+	DSyncWidth
+
+	// DSyncWidthR is shortcut for DSyncWidth|DidentRight
+	DSyncWidthR = DSyncWidth | DidentRight
+
+	// DSyncSpace is shortcut for DSyncWidth|DextraSpace
+	DSyncSpace = DSyncWidth | DextraSpace
+
+	// DSyncSpaceR is shortcut for DSyncWidth|DextraSpace|DidentRight
+	DSyncSpaceR = DSyncWidth | DextraSpace | DidentRight
+)
+
+// TimeStyle enum.
+type TimeStyle int
+
+// TimeStyle kinds.
+const (
+	ET_STYLE_GO TimeStyle = iota
+	ET_STYLE_HHMMSS
+	ET_STYLE_HHMM
+	ET_STYLE_MMSS
+)
+
+// Statistics consists of progress related statistics, that Decorator
+// may need.
+type Statistics struct {
+	ID        int
+	Completed bool
+	Total     int64
+	Current   int64
+}
+
+// Decorator interface.
+// Implementors should embed WC type, that way only single method
+// Decor(*Statistics) needs to be implemented, the rest will be handled
+// by WC type.
+type Decorator interface {
+	Configurator
+	Synchronizer
+	Decor(*Statistics) string
+}
+
+// Synchronizer interface.
+// All decorators implement this interface implicitly. Its Sync
+// method exposes width sync channel, if DSyncWidth bit is set.
+type Synchronizer interface {
+	Sync() (chan int, bool)
+}
+
+// Configurator interface.
+type Configurator interface {
+	GetConf() WC
+	SetConf(WC)
+}
+
+// Wrapper interface.
+// If you're implementing custom Decorator by wrapping a built-in one,
+// it is necessary to implement this interface to retain functionality
+// of built-in Decorator.
+type Wrapper interface {
+	Base() Decorator
+}
+
+// AmountReceiver interface.
+// EWMA based decorators need to implement this one.
+type AmountReceiver interface {
+	NextAmount(int64, ...time.Duration)
+}
+
+// ShutdownListener interface.
+// If decorator needs to be notified once upon bar shutdown event, so
+// this is the right interface to implement.
+type ShutdownListener interface {
+	Shutdown()
+}
+
+// AverageAdjuster interface.
+// Average decorators should implement this interface to provide start
+// time adjustment facility, for resume-able tasks.
+type AverageAdjuster interface {
+	AverageAdjust(time.Time)
+}
+
+// CBFunc convenience call back func type.
+type CBFunc func(Decorator)
+
+// Global convenience instances of WC with sync width bit set.
+var (
+	WCSyncWidth  = WC{C: DSyncWidth}
+	WCSyncWidthR = WC{C: DSyncWidthR}
+	WCSyncSpace  = WC{C: DSyncSpace}
+	WCSyncSpaceR = WC{C: DSyncSpaceR}
+)
+
+// WC is a struct with two public fields W and C, both of int type.
+// W represents width and C represents bit set of width related config.
+// A decorator should embed WC, to enable width synchronization.
+type WC struct {
+	W            int
+	C            int
+	dynFormat    string
+	staticFormat string
+	wsync        chan int
+}
+
+// FormatMsg formats final message according to WC.W and WC.C.
+// Should be called by any Decorator implementation.
+func (wc *WC) FormatMsg(msg string) string {
+	if (wc.C & DSyncWidth) != 0 {
+		wc.wsync <- utf8.RuneCountInString(msg)
+		max := <-wc.wsync
+		if (wc.C & DextraSpace) != 0 {
+			max++
+		}
+		return fmt.Sprintf(fmt.Sprintf(wc.dynFormat, max), msg)
+	}
+	return fmt.Sprintf(wc.staticFormat, msg)
+}
+
+// Init initializes width related config.
+func (wc *WC) Init() WC {
+	wc.dynFormat = "%%"
+	if (wc.C & DidentRight) != 0 {
+		wc.dynFormat += "-"
+	}
+	wc.dynFormat += "%ds"
+	wc.staticFormat = fmt.Sprintf(wc.dynFormat, wc.W)
+	if (wc.C & DSyncWidth) != 0 {
+		// it's deliberate choice to override wsync on each Init() call,
+		// this way globals like WCSyncSpace can be reused
+		wc.wsync = make(chan int)
+	}
+	return *wc
+}
+
+// Sync is implementation of Synchronizer interface.
+func (wc *WC) Sync() (chan int, bool) {
+	if (wc.C&DSyncWidth) != 0 && wc.wsync == nil {
+		panic(fmt.Sprintf("%T is not initialized", wc))
+	}
+	return wc.wsync, (wc.C & DSyncWidth) != 0
+}
+
+// GetConf is implementation of Configurator interface.
+func (wc *WC) GetConf() WC {
+	return *wc
+}
+
+// SetConf is implementation of Configurator interface.
+func (wc *WC) SetConf(conf WC) {
+	*wc = conf.Init()
+}