Update dependencies

Signed-off-by: Knut Ahlers <knut@ahlers.me>

Gopkg.lock

@@ -4,24 +4,26 @@
 [[projects]]
   name = "github.com/Luzifer/rconfig"
   packages = ["."]
-  revision = "c27bd3a64b5b19556914d9fec69922cf3852d585"
+  revision = "7aef1d393c1e2d0758901853b59981c7adc67c7e"
-  version = "v1.1.0"
+  version = "v1.2.0"
 
 [[projects]]
   name = "github.com/cenkalti/backoff"
   packages = ["."]
-  revision = "9831e1e25c874e0a0601b6dc43641071414eec7a"
+  revision = "61153c768f31ee5f130071d08fc82b85208528de"
+  version = "v1.1.0"
 
 [[projects]]
-  branch = "v1"
   name = "github.com/robfig/cron"
   packages = ["."]
-  revision = "67823cd24dece1b04cced3a0a0b3ca2bc84d875e"
+  revision = "b024fc5ea0e34bc3f83d9941c8d60b0622bfaca4"
+  version = "v1"
 
 [[projects]]
   name = "github.com/spf13/pflag"
   packages = ["."]
-  revision = "c7e63cf4530bcd3ba943729cee0efeff2ebea63f"
+  revision = "e57e3eeb33f795204c1ca35f56c44f83227c6e66"
+  version = "v1.0.0"
 
 [[projects]]
   branch = "master"
@@ -30,9 +32,16 @@
   revision = "b129b8e0fbeb39c8358e51a07ab6c50ad415e72e"
 
 [[projects]]
+  branch = "v2"
+  name = "gopkg.in/validator.v2"
+  packages = ["."]
+  revision = "460c83432a98c35224a6fe352acf8b23e067ad06"
+
+[[projects]]
+  branch = "v2"
   name = "gopkg.in/yaml.v2"
   packages = ["."]
-  revision = "31c299268d302dd0aa9a0dcf765a3d58971ac83f"
+  revision = "eb3733d160e74a9c7e442f435eb3bea458e1d19f"
 
 [solve-meta]
   analyzer-name = "dep"

vendor/github.com/Luzifer/rconfig/.travis.yml

@@ -1,8 +1,8 @@
 language: go
 
 go:
-  - 1.4
+  - 1.6
-  - 1.5
+  - 1.7
   - tip
 
 script: go test -v -race -cover ./...

vendor/github.com/Luzifer/rconfig/History.md

@@ -1,3 +1,7 @@
+# 1.2.0 / 2017-06-19
+
+  * Add ParseAndValidate method
+
 # 1.1.0 / 2016-06-28
 
   * Support time.Duration config parameters

vendor/github.com/Luzifer/rconfig/README.md

@@ -29,31 +29,28 @@ go test -v -race -cover github.com/Luzifer/rconfig
 
 ## Usage
 
-As a first step define a struct holding your configuration:
+A very simple usecase is to just configure a struct inside the vars section of your `main.go` and to parse the commandline flags from the `main()` function:
 
 ```go
-type config struct {
+package main
+
+import (
+  "fmt"
+  "github.com/Luzifer/rconfig"
+)
+
+var (
+  cfg = struct {
     Username string `default:"unknown" flag:"user" description:"Your name"`
     Details  struct {
       Age int `default:"25" flag:"age" env:"age" description:"Your age"`
     }
-}
+  }{}
-```
+)
 
-Next create an instance of that struct and let `rconfig` fill that config:
-
-```go
-var cfg config
-func init() {
-  cfg = config{}
-  rconfig.Parse(&cfg)
-}
-```
-
-You're ready to access your configuration:
-
-```go
 func main() {
+  rconfig.Parse(&cfg)
+
   fmt.Printf("Hello %s, happy birthday for your %dth birthday.",
     cfg.Username,
     cfg.Details.Age)
@@ -72,18 +69,14 @@ The order of the directives (lower number = higher precedence):
 1. `default` tag in the struct
 
 ```go
-type config struct {
+var cfg = struct {
   Username string `vardefault:"username" flag:"username" description:"Your username"`
 }
 
-var cfg = config{}
+func main() {
-
-func init() {
   rconfig.SetVariableDefaults(rconfig.VarDefaultsFromYAMLFile("~/.myapp.yml"))
   rconfig.Parse(&cfg)
-}
 
-func main() {
   fmt.Printf("Username = %s", cfg.Username)
   // Output: Username = luzifer
 }

vendor/github.com/Luzifer/rconfig/config.go

@@ -13,6 +13,7 @@ import (
 	"time"
 
 	"github.com/spf13/pflag"
+	validator "gopkg.in/validator.v2"
 )
 
 var (
@@ -45,6 +46,15 @@ func Parse(config interface{}) error {
 	return parse(config, nil)
 }
 
+// ParseAndValidate works exactly like Parse but implements an additional run of
+// the go-validator package on the configuration struct. Therefore additonal struct
+// tags are supported like described in the readme file of the go-validator package:
+//
+// https://github.com/go-validator/validator/tree/v2#usage
+func ParseAndValidate(config interface{}) error {
+	return parseAndValidate(config, nil)
+}
+
 // Args returns the non-flag command-line arguments.
 func Args() []string {
 	return fs.Args()
@@ -65,6 +75,14 @@ func SetVariableDefaults(defaults map[string]string) {
 	variableDefaults = defaults
 }
 
+func parseAndValidate(in interface{}, args []string) error {
+	if err := parse(in, args); err != nil {
+		return err
+	}
+
+	return validator.Validate(in)
+}
+
 func parse(in interface{}, args []string) error {
 	if args == nil {
 		args = os.Args

vendor/github.com/Luzifer/rconfig/general_test.go

@@ -15,6 +15,10 @@ var _ = Describe("Testing general parsing", func() {
 		SadFlag     string
 	}
 
+	type tValidated struct {
+		Test string `flag:"test" default:"" validate:"nonzero"`
+	}
+
 	var (
 		err  error
 		args []string
@@ -106,4 +110,19 @@ var _ = Describe("Testing general parsing", func() {
 		})
 	})
 
+	Context("making use of the validator package", func() {
+		var cfgValidated tValidated
+
+		BeforeEach(func() {
+			cfgValidated = tValidated{}
+			args = []string{}
+		})
+
+		JustBeforeEach(func() {
+			err = parseAndValidate(&cfgValidated, args)
+		})
+
+		It("should have errored", func() { Expect(err).To(HaveOccurred()) })
+	})
+
 })

vendor/github.com/cenkalti/backoff/.travis.yml

@@ -1,2 +1,9 @@
 language: go
-go: 1.3.3
+go:
+  - 1.3.3
+  - tip
+before_install:
+  - go get github.com/mattn/goveralls
+  - go get golang.org/x/tools/cmd/cover
+script:
+  - $HOME/gopath/bin/goveralls -service=travis-ci

vendor/github.com/cenkalti/backoff/README.md

@@ -1,69 +1,30 @@
-# backoff
+# Exponential Backoff [![GoDoc][godoc image]][godoc] [![Build Status][travis image]][travis] [![Coverage Status][coveralls image]][coveralls]
 
-[![GoDoc](https://godoc.org/github.com/cenkalti/backoff?status.png)](https://godoc.org/github.com/cenkalti/backoff)
+This is a Go port of the exponential backoff algorithm from [Google's HTTP Client Library for Java][google-http-java-client].
-[![Build Status](https://travis-ci.org/cenkalti/backoff.png)](https://travis-ci.org/cenkalti/backoff)
 
-This is a Go port of the exponential backoff algorithm from
+[Exponential backoff][exponential backoff wiki]
-[google-http-java-client](https://code.google.com/p/google-http-java-client/wiki/ExponentialBackoff).
-
-[Exponential backoff](http://en.wikipedia.org/wiki/Exponential_backoff)
 is an algorithm that uses feedback to multiplicatively decrease the rate of some process,
 in order to gradually find an acceptable rate.
 The retries exponentially increase and stop increasing when a certain threshold is met.
 
+## Usage
 
+See https://godoc.org/github.com/cenkalti/backoff#pkg-examples
 
+## Contributing
 
-## Install
+* I would like to keep this library as small as possible.
+* Please don't send a PR without opening an issue and discussing it first.
+* If proposed change is not a common use case, I will probably not accept it.
 
-```bash
+[godoc]: https://godoc.org/github.com/cenkalti/backoff
-go get github.com/cenkalti/backoff
+[godoc image]: https://godoc.org/github.com/cenkalti/backoff?status.png
-```
+[travis]: https://travis-ci.org/cenkalti/backoff
+[travis image]: https://travis-ci.org/cenkalti/backoff.png?branch=master
+[coveralls]: https://coveralls.io/github/cenkalti/backoff?branch=master
+[coveralls image]: https://coveralls.io/repos/github/cenkalti/backoff/badge.svg?branch=master
 
-## Example
+[google-http-java-client]: https://github.com/google/google-http-java-client
+[exponential backoff wiki]: http://en.wikipedia.org/wiki/Exponential_backoff
 
-Simple retry helper that uses exponential back-off algorithm:
+[advanced example]: https://godoc.org/github.com/cenkalti/backoff#example_
-
-```go
-operation := func() error {
-    // An operation that might fail
-}
-
-err := backoff.Retry(operation, backoff.NewExponentialBackOff())
-if err != nil {
-    // handle error
-}
-
-// operation is successfull
-```
-
-Ticker example:
-
-```go
-operation := func() error {
-    // An operation that may fail
-}
-
-b := backoff.NewExponentialBackOff()
-ticker := backoff.NewTicker(b)
-
-var err error
-
-// Ticks will continue to arrive when the previous operation is still running,
-// so operations that take a while to fail could run in quick succession.
-for t = range ticker.C {
-    if err = operation(); err != nil {
-        log.Println(err, "will retry...")
-        continue
-    }
-
-    ticker.Stop()
-    break
-}
-
-if err != nil {
-    // Operation has failed.
-}
-
-// Operation is successfull.
-```

vendor/github.com/cenkalti/backoff/backoff.go

@@ -1,22 +1,29 @@
 // Package backoff implements backoff algorithms for retrying operations.
 //
-// Also has a Retry() helper for retrying operations that may fail.
+// Use Retry function for retrying operations that may fail.
+// If Retry does not meet your needs,
+// copy/paste the function into your project and modify as you wish.
+//
+// There is also Ticker type similar to time.Ticker.
+// You can use it if you need to work with channels.
+//
+// See Examples section below for usage examples.
 package backoff
 
 import "time"
 
-// Back-off policy when retrying an operation.
+// BackOff is a backoff policy for retrying an operation.
 type BackOff interface {
-	// Gets the duration to wait before retrying the operation or
+	// NextBackOff returns the duration to wait before retrying the operation,
-	// backoff.Stop to indicate that no retries should be made.
+	// or backoff.Stop to indicate that no more retries should be made.
 	//
 	// Example usage:
 	//
 	// 	duration := backoff.NextBackOff();
 	// 	if (duration == backoff.Stop) {
-	// 		// do not retry operation
+	// 		// Do not retry operation.
 	// 	} else {
-	// 		// sleep for duration and retry operation
+	// 		// Sleep for duration and retry operation.
 	// 	}
 	//
 	NextBackOff() time.Duration
@@ -25,25 +32,28 @@ type BackOff interface {
 	Reset()
 }
 
-// Indicates that no more retries should be made for use in NextBackOff().
+// Stop indicates that no more retries should be made for use in NextBackOff().
 const Stop time.Duration = -1
 
-// ZeroBackOff is a fixed back-off policy whose back-off time is always zero,
+// ZeroBackOff is a fixed backoff policy whose backoff time is always zero,
-// meaning that the operation is retried immediately without waiting.
+// meaning that the operation is retried immediately without waiting, indefinitely.
 type ZeroBackOff struct{}
 
 func (b *ZeroBackOff) Reset() {}
 
 func (b *ZeroBackOff) NextBackOff() time.Duration { return 0 }
 
-// StopBackOff is a fixed back-off policy that always returns backoff.Stop for
+// StopBackOff is a fixed backoff policy that always returns backoff.Stop for
-// NextBackOff(), meaning that the operation should not be retried.
+// NextBackOff(), meaning that the operation should never be retried.
 type StopBackOff struct{}
 
 func (b *StopBackOff) Reset() {}
 
 func (b *StopBackOff) NextBackOff() time.Duration { return Stop }
 
+// ConstantBackOff is a backoff policy that always returns the same backoff delay.
+// This is in contrast to an exponential backoff policy,
+// which returns a delay that grows longer as you call NextBackOff() over and over again.
 type ConstantBackOff struct {
 	Interval time.Duration
 }

vendor/github.com/cenkalti/backoff/backoff_test.go

@@ -1,9 +1,8 @@
 package backoff
 
 import (
-	"time"
-
 	"testing"
+	"time"
 )
 
 func TestNextBackOffMillis(t *testing.T) {

vendor/github.com/cenkalti/backoff/context.go

@@ -0,0 +1,60 @@
+package backoff
+
+import (
+	"time"
+
+	"golang.org/x/net/context"
+)
+
+// BackOffContext is a backoff policy that stops retrying after the context
+// is canceled.
+type BackOffContext interface {
+	BackOff
+	Context() context.Context
+}
+
+type backOffContext struct {
+	BackOff
+	ctx context.Context
+}
+
+// WithContext returns a BackOffContext with context ctx
+//
+// ctx must not be nil
+func WithContext(b BackOff, ctx context.Context) BackOffContext {
+	if ctx == nil {
+		panic("nil context")
+	}
+
+	if b, ok := b.(*backOffContext); ok {
+		return &backOffContext{
+			BackOff: b.BackOff,
+			ctx:     ctx,
+		}
+	}
+
+	return &backOffContext{
+		BackOff: b,
+		ctx:     ctx,
+	}
+}
+
+func ensureContext(b BackOff) BackOffContext {
+	if cb, ok := b.(BackOffContext); ok {
+		return cb
+	}
+	return WithContext(b, context.Background())
+}
+
+func (b *backOffContext) Context() context.Context {
+	return b.ctx
+}
+
+func (b *backOffContext) NextBackOff() time.Duration {
+	select {
+	case <-b.Context().Done():
+		return Stop
+	default:
+		return b.BackOff.NextBackOff()
+	}
+}

vendor/github.com/cenkalti/backoff/context_test.go

@@ -0,0 +1,26 @@
+package backoff
+
+import (
+	"testing"
+	"time"
+
+	"golang.org/x/net/context"
+)
+
+func TestContext(t *testing.T) {
+	b := NewConstantBackOff(time.Millisecond)
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	cb := WithContext(b, ctx)
+
+	if cb.Context() != ctx {
+		t.Error("invalid context")
+	}
+
+	cancel()
+
+	if cb.NextBackOff() != Stop {
+		t.Error("invalid next back off")
+	}
+}

vendor/github.com/cenkalti/backoff/example_test.go

@@ -0,0 +1,73 @@
+package backoff
+
+import (
+	"log"
+
+	"golang.org/x/net/context"
+)
+
+func ExampleRetry() {
+	// An operation that may fail.
+	operation := func() error {
+		return nil // or an error
+	}
+
+	err := Retry(operation, NewExponentialBackOff())
+	if err != nil {
+		// Handle error.
+		return
+	}
+
+	// Operation is successful.
+}
+
+func ExampleRetryContext() {
+	// A context
+	ctx := context.Background()
+
+	// An operation that may fail.
+	operation := func() error {
+		return nil // or an error
+	}
+
+	b := WithContext(NewExponentialBackOff(), ctx)
+
+	err := Retry(operation, b)
+	if err != nil {
+		// Handle error.
+		return
+	}
+
+	// Operation is successful.
+}
+
+func ExampleTicker() {
+	// An operation that may fail.
+	operation := func() error {
+		return nil // or an error
+	}
+
+	ticker := NewTicker(NewExponentialBackOff())
+
+	var err error
+
+	// Ticks will continue to arrive when the previous operation is still running,
+	// so operations that take a while to fail could run in quick succession.
+	for _ = range ticker.C {
+		if err = operation(); err != nil {
+			log.Println(err, "will retry...")
+			continue
+		}
+
+		ticker.Stop()
+		break
+	}
+
+	if err != nil {
+		// Operation has failed.
+		return
+	}
+
+	// Operation is successful.
+	return
+}

vendor/github.com/cenkalti/backoff/exponential.go

@@ -6,30 +6,37 @@ import (
 )
 
 /*
-ExponentialBackOff is an implementation of BackOff that increases the back off
+ExponentialBackOff is a backoff implementation that increases the backoff
 period for each retry attempt using a randomization function that grows exponentially.
 
 NextBackOff() is calculated using the following formula:
 
-	randomized_interval =
+ randomized interval =
-	    retry_interval * (random value in range [1 - randomization_factor, 1 + randomization_factor])
+     RetryInterval * (random value in range [1 - RandomizationFactor, 1 + RandomizationFactor])
 
 In other words NextBackOff() will range between the randomization factor
-percentage below and above the retry interval. For example, using 2 seconds as the base retry
+percentage below and above the retry interval.
-interval and 0.5 as the randomization factor, the actual back off period used in the next retry
-attempt will be between 1 and 3 seconds.
 
-Note: max_interval caps the retry_interval and not the randomized_interval.
+For example, given the following parameters:
+
+ RetryInterval = 2
+ RandomizationFactor = 0.5
+ Multiplier = 2
+
+the actual backoff period used in the next retry attempt will range between 1 and 3 seconds,
+multiplied by the exponential, that is, between 2 and 6 seconds.
+
+Note: MaxInterval caps the RetryInterval and not the randomized interval.
 
 If the time elapsed since an ExponentialBackOff instance is created goes past the
-max_elapsed_time then the method NextBackOff() starts returning backoff.Stop.
+MaxElapsedTime, then the method NextBackOff() starts returning backoff.Stop.
+
 The elapsed time can be reset by calling Reset().
 
-Example: The default retry_interval is .5 seconds, default randomization_factor is 0.5, default
+Example: Given the following default arguments, for 10 tries the sequence will be,
-multiplier is 1.5 and the default max_interval is 1 minute. For 10 tries the sequence will be
+and assuming we go over the MaxElapsedTime on the 10th try:
-(values in seconds) and assuming we go over the max_elapsed_time on the 10th try:
 
-	request#     retry_interval     randomized_interval
+ Request #  RetryInterval (seconds)  Randomized Interval (seconds)
 
   1          0.5                     [0.25,   0.75]
   2          0.75                    [0.375,  1.125]
@@ -42,7 +49,7 @@ multiplier is 1.5 and the default max_interval is 1 minute. For 10 tries the seq
   9         12.807                   [6.403, 19.210]
  10         19.210                   backoff.Stop
 
-Implementation is not thread-safe.
+Note: Implementation is not thread-safe.
 */
 type ExponentialBackOff struct {
 	InitialInterval     time.Duration
@@ -56,6 +63,7 @@ type ExponentialBackOff struct {
 
 	currentInterval time.Duration
 	startTime       time.Time
+	random          *rand.Rand
 }
 
 // Clock is an interface that returns current time for BackOff.
@@ -74,14 +82,17 @@ const (
 
 // NewExponentialBackOff creates an instance of ExponentialBackOff using default values.
 func NewExponentialBackOff() *ExponentialBackOff {
-	return &ExponentialBackOff{
+	b := &ExponentialBackOff{
 		InitialInterval:     DefaultInitialInterval,
 		RandomizationFactor: DefaultRandomizationFactor,
 		Multiplier:          DefaultMultiplier,
 		MaxInterval:         DefaultMaxInterval,
 		MaxElapsedTime:      DefaultMaxElapsedTime,
 		Clock:               SystemClock,
+		random:              rand.New(rand.NewSource(time.Now().UnixNano())),
 	}
+	b.Reset()
+	return b
 }
 
 type systemClock struct{}
@@ -99,15 +110,18 @@ func (b *ExponentialBackOff) Reset() {
 	b.startTime = b.Clock.Now()
 }
 
-// NextBackOff calculates the next back off interval using the formula:
+// NextBackOff calculates the next backoff interval using the formula:
-// 	randomized_interval = retry_interval +/- (randomization_factor * retry_interval)
+// 	Randomized interval = RetryInterval +/- (RandomizationFactor * RetryInterval)
 func (b *ExponentialBackOff) NextBackOff() time.Duration {
 	// Make sure we have not gone over the maximum elapsed time.
 	if b.MaxElapsedTime != 0 && b.GetElapsedTime() > b.MaxElapsedTime {
 		return Stop
 	}
 	defer b.incrementCurrentInterval()
-	return getRandomValueFromInterval(b.RandomizationFactor, rand.Float64(), b.currentInterval)
+	if b.random == nil {
+		b.random = rand.New(rand.NewSource(time.Now().UnixNano()))
+	}
+	return getRandomValueFromInterval(b.RandomizationFactor, b.random.Float64(), b.currentInterval)
 }
 
 // GetElapsedTime returns the elapsed time since an ExponentialBackOff instance
@@ -128,12 +142,13 @@ func (b *ExponentialBackOff) incrementCurrentInterval() {
 	}
 }
 
-// Returns a random value from the interval:
+// Returns a random value from the following interval:
 // 	[randomizationFactor * currentInterval, randomizationFactor * currentInterval].
 func getRandomValueFromInterval(randomizationFactor, random float64, currentInterval time.Duration) time.Duration {
 	var delta = randomizationFactor * float64(currentInterval)
 	var minInterval = float64(currentInterval) - delta
 	var maxInterval = float64(currentInterval) + delta
+
 	// Get a random value from the range [minInterval, maxInterval].
 	// The formula used below has a +1 because if the minInterval is 1 and the maxInterval is 3 then
 	// we want a 33% chance for selecting either 1, 2 or 3.

vendor/github.com/cenkalti/backoff/exponential_test.go

@@ -30,7 +30,7 @@ func TestBackOff(t *testing.T) {
 
 	for _, expected := range expectedResults {
 		assertEquals(t, expected, exp.currentInterval)
-		// Assert that the next back off falls in the expected range.
+		// Assert that the next backoff falls in the expected range.
 		var minInterval = expected - time.Duration(testRandomizationFactor*float64(expected))
 		var maxInterval = expected + time.Duration(testRandomizationFactor*float64(expected))
 		var actualInterval = exp.NextBackOff()
@@ -77,9 +77,6 @@ func TestGetElapsedTime(t *testing.T) {
 func TestMaxElapsedTime(t *testing.T) {
 	var exp = NewExponentialBackOff()
 	exp.Clock = &TestClock{start: time.Time{}.Add(10000 * time.Second)}
-	if exp.NextBackOff() != Stop {
-		t.Error("error2")
-	}
 	// Change the currentElapsedTime to be 0 ensuring that the elapsed time will be greater
 	// than the max elapsed time.
 	exp.startTime = time.Time{}
@@ -90,7 +87,7 @@ func TestBackOffOverflow(t *testing.T) {
 	var (
 		testInitialInterval time.Duration = math.MaxInt64 / 2
 		testMaxInterval     time.Duration = math.MaxInt64
-		testMultiplier      float64       = 2.1
+		testMultiplier                    = 2.1
 	)
 
 	exp := NewExponentialBackOff()

vendor/github.com/cenkalti/backoff/retry.go

@@ -2,38 +2,46 @@ package backoff
 
 import "time"
 
-// Retry the function f until it does not return error or BackOff stops.
+// An Operation is executing by Retry() or RetryNotify().
-// f is guaranteed to be run at least once.
+// The operation will be retried using a backoff policy if it returns an error.
+type Operation func() error
+
+// Notify is a notify-on-error function. It receives an operation error and
+// backoff delay if the operation failed (with an error).
+//
+// NOTE that if the backoff policy stated to stop retrying,
+// the notify function isn't called.
+type Notify func(error, time.Duration)
+
+// Retry the operation o until it does not return error or BackOff stops.
+// o is guaranteed to be run at least once.
 // It is the caller's responsibility to reset b after Retry returns.
 //
+// If o returns a *PermanentError, the operation is not retried, and the
+// wrapped error is returned.
+//
 // Retry sleeps the goroutine for the duration returned by BackOff after a
 // failed operation returns.
-//
+func Retry(o Operation, b BackOff) error { return RetryNotify(o, b, nil) }
-// Usage:
-// 	operation := func() error {
-// 		// An operation that may fail
-// 	}
-//
-// 	err := backoff.Retry(operation, backoff.NewExponentialBackOff())
-// 	if err != nil {
-// 		// Operation has failed.
-// 	}
-//
-// 	// Operation is successfull.
-//
-func Retry(f func() error, b BackOff) error { return RetryNotify(f, b, nil) }
 
-// RetryNotify calls notify function with the error and wait duration for each failed attempt before sleep.
+// RetryNotify calls notify function with the error and wait duration
-func RetryNotify(f func() error, b BackOff, notify func(err error, wait time.Duration)) error {
+// for each failed attempt before sleep.
+func RetryNotify(operation Operation, b BackOff, notify Notify) error {
 	var err error
 	var next time.Duration
 
+	cb := ensureContext(b)
+
 	b.Reset()
 	for {
-		if err = f(); err == nil {
+		if err = operation(); err == nil {
 			return nil
 		}
 
+		if permanent, ok := err.(*PermanentError); ok {
+			return permanent.Err
+		}
+
 		if next = b.NextBackOff(); next == Stop {
 			return err
 		}
@@ -42,6 +50,29 @@ func RetryNotify(f func() error, b BackOff, notify func(err error, wait time.Dur
 			notify(err, next)
 		}
 
-		time.Sleep(next)
+		t := time.NewTimer(next)
+
+		select {
+		case <-cb.Context().Done():
+			t.Stop()
+			return err
+		case <-t.C:
+		}
+	}
+}
+
+// PermanentError signals that the operation should not be retried.
+type PermanentError struct {
+	Err error
+}
+
+func (e *PermanentError) Error() string {
+	return e.Err.Error()
+}
+
+// Permanent wraps the given err in a *PermanentError.
+func Permanent(err error) *PermanentError {
+	return &PermanentError{
+		Err: err,
 	}
 }

vendor/github.com/cenkalti/backoff/retry_test.go

@@ -2,15 +2,19 @@ package backoff
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	"testing"
+	"time"
+
+	"golang.org/x/net/context"
 )
 
 func TestRetry(t *testing.T) {
 	const successOn = 3
 	var i = 0
 
-	// This function is successfull on "successOn" calls.
+	// This function is successful on "successOn" calls.
 	f := func() error {
 		i++
 		log.Printf("function is called %d. time\n", i)
@@ -32,3 +36,64 @@ func TestRetry(t *testing.T) {
 		t.Errorf("invalid number of retries: %d", i)
 	}
 }
+
+func TestRetryContext(t *testing.T) {
+	var cancelOn = 3
+	var i = 0
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// This function cancels context on "cancelOn" calls.
+	f := func() error {
+		i++
+		log.Printf("function is called %d. time\n", i)
+
+		// cancelling the context in the operation function is not a typical
+		// use-case, however it allows to get predictable test results.
+		if i == cancelOn {
+			cancel()
+		}
+
+		log.Println("error")
+		return fmt.Errorf("error (%d)", i)
+	}
+
+	err := Retry(f, WithContext(NewConstantBackOff(time.Millisecond), ctx))
+	if err == nil {
+		t.Errorf("error is unexpectedly nil")
+	}
+	if err.Error() != "error (3)" {
+		t.Errorf("unexpected error: %s", err.Error())
+	}
+	if i != cancelOn {
+		t.Errorf("invalid number of retries: %d", i)
+	}
+}
+
+func TestRetryPermenent(t *testing.T) {
+	const permanentOn = 3
+	var i = 0
+
+	// This function fails permanently after permanentOn tries
+	f := func() error {
+		i++
+		log.Printf("function is called %d. time\n", i)
+
+		if i == permanentOn {
+			log.Println("permanent error")
+			return Permanent(errors.New("permanent error"))
+		}
+
+		log.Println("error")
+		return errors.New("error")
+	}
+
+	err := Retry(f, NewExponentialBackOff())
+	if err == nil || err.Error() != "permanent error" {
+		t.Errorf("unexpected error: %s", err)
+	}
+	if i != permanentOn {
+		t.Errorf("invalid number of retries: %d", i)
+	}
+}

vendor/github.com/cenkalti/backoff/ticker.go

@@ -10,36 +10,10 @@ import (
 //
 // Ticks will continue to arrive when the previous operation is still running,
 // so operations that take a while to fail could run in quick succession.
-//
-// Usage:
-// 	operation := func() error {
-// 		// An operation that may fail
-// 	}
-//
-//	b := backoff.NewExponentialBackOff()
-//	ticker := backoff.NewTicker(b)
-//
-// 	var err error
-//	for _ = range ticker.C {
-//		if err = operation(); err != nil {
-//			log.Println(err, "will retry...")
-//			continue
-//		}
-//
-//		ticker.Stop()
-//		break
-//	}
-//
-// 	if err != nil {
-// 		// Operation has failed.
-// 	}
-//
-// 	// Operation is successfull.
-//
 type Ticker struct {
 	C        <-chan time.Time
 	c        chan time.Time
-	b        BackOff
+	b        BackOffContext
 	stop     chan struct{}
 	stopOnce sync.Once
 }
@@ -52,7 +26,7 @@ func NewTicker(b BackOff) *Ticker {
 	t := &Ticker{
 		C:    c,
 		c:    c,
-		b:    b,
+		b:    ensureContext(b),
 		stop: make(chan struct{}),
 	}
 	go t.run()
@@ -84,6 +58,8 @@ func (t *Ticker) run() {
 		case <-t.stop:
 			t.c = nil // Prevent future ticks from being sent to the channel.
 			return
+		case <-t.b.Context().Done():
+			return
 		}
 	}
 }

vendor/github.com/cenkalti/backoff/ticker_test.go

@@ -2,15 +2,19 @@ package backoff
 
 import (
 	"errors"
+	"fmt"
 	"log"
 	"testing"
+	"time"
+
+	"golang.org/x/net/context"
 )
 
 func TestTicker(t *testing.T) {
 	const successOn = 3
 	var i = 0
 
-	// This function is successfull on "successOn" calls.
+	// This function is successful on "successOn" calls.
 	f := func() error {
 		i++
 		log.Printf("function is called %d. time\n", i)
@@ -43,3 +47,48 @@ func TestTicker(t *testing.T) {
 		t.Errorf("invalid number of retries: %d", i)
 	}
 }
+
+func TestTickerContext(t *testing.T) {
+	const cancelOn = 3
+	var i = 0
+
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	// This function cancels context on "cancelOn" calls.
+	f := func() error {
+		i++
+		log.Printf("function is called %d. time\n", i)
+
+		// cancelling the context in the operation function is not a typical
+		// use-case, however it allows to get predictable test results.
+		if i == cancelOn {
+			cancel()
+		}
+
+		log.Println("error")
+		return fmt.Errorf("error (%d)", i)
+	}
+
+	b := WithContext(NewConstantBackOff(time.Millisecond), ctx)
+	ticker := NewTicker(b)
+
+	var err error
+	for _ = range ticker.C {
+		if err = f(); err != nil {
+			t.Log(err)
+			continue
+		}
+
+		break
+	}
+	if err == nil {
+		t.Errorf("error is unexpectedly nil")
+	}
+	if err.Error() != "error (3)" {
+		t.Errorf("unexpected error: %s", err.Error())
+	}
+	if i != cancelOn {
+		t.Errorf("invalid number of retries: %d", i)
+	}
+}

vendor/github.com/cenkalti/backoff/tries.go

@@ -0,0 +1,35 @@
+package backoff
+
+import "time"
+
+/*
+WithMaxTries creates a wrapper around another BackOff, which will
+return Stop if NextBackOff() has been called too many times since
+the last time Reset() was called
+
+Note: Implementation is not thread-safe.
+*/
+func WithMaxTries(b BackOff, max uint64) BackOff {
+	return &backOffTries{delegate: b, maxTries: max}
+}
+
+type backOffTries struct {
+	delegate BackOff
+	maxTries uint64
+	numTries uint64
+}
+
+func (b *backOffTries) NextBackOff() time.Duration {
+	if b.maxTries > 0 {
+		if b.maxTries <= b.numTries {
+			return Stop
+		}
+		b.numTries++
+	}
+	return b.delegate.NextBackOff()
+}
+
+func (b *backOffTries) Reset() {
+	b.numTries = 0
+	b.delegate.Reset()
+}

vendor/github.com/cenkalti/backoff/tries_test.go

@@ -0,0 +1,55 @@
+package backoff
+
+import (
+	"math/rand"
+	"testing"
+	"time"
+)
+
+func TestMaxTriesHappy(t *testing.T) {
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	max := 17 + r.Intn(13)
+	bo := WithMaxTries(&ZeroBackOff{}, uint64(max))
+
+	// Load up the tries count, but reset should clear the record
+	for ix := 0; ix < max/2; ix++ {
+		bo.NextBackOff()
+	}
+	bo.Reset()
+
+	// Now fill the tries count all the way up
+	for ix := 0; ix < max; ix++ {
+		d := bo.NextBackOff()
+		if d == Stop {
+			t.Errorf("returned Stop on try %d", ix)
+		}
+	}
+
+	// We have now called the BackOff max number of times, we expect
+	// the next result to be Stop, even if we try it multiple times
+	for ix := 0; ix < 7; ix++ {
+		d := bo.NextBackOff()
+		if d != Stop {
+			t.Error("invalid next back off")
+		}
+	}
+
+	// Reset makes it all work again
+	bo.Reset()
+	d := bo.NextBackOff()
+	if d == Stop {
+		t.Error("returned Stop after reset")
+	}
+
+}
+
+func TestMaxTriesZero(t *testing.T) {
+	// It might not make sense, but its okay to send a zero
+	bo := WithMaxTries(&ZeroBackOff{}, uint64(0))
+	for ix := 0; ix < 11; ix++ {
+		d := bo.NextBackOff()
+		if d == Stop {
+			t.Errorf("returned Stop on try %d", ix)
+		}
+	}
+}

vendor/github.com/robfig/cron/.travis.yml

@@ -1 +0,0 @@
-language: go

vendor/github.com/robfig/cron/spec.go

@@ -1,6 +1,8 @@
 package cron
 
-import "time"
+import (
+	"time"
+)
 
 // SpecSchedule specifies a duty cycle (to the second granularity), based on a
 // traditional crontab specification. It is computed initially and stored as bit sets.
@@ -108,7 +110,7 @@ WRAP:
 	for 1<<uint(t.Hour())&s.Hour == 0 {
 		if !added {
 			added = true
-			t = t.Truncate(time.Hour)
+			t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), 0, 0, 0, t.Location())
 		}
 		t = t.Add(1 * time.Hour)
 
@@ -120,7 +122,7 @@ WRAP:
 	for 1<<uint(t.Minute())&s.Minute == 0 {
 		if !added {
 			added = true
-			t = t.Truncate(time.Minute)
+			t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), 0, 0, t.Location())
 		}
 		t = t.Add(1 * time.Minute)
 
@@ -132,7 +134,7 @@ WRAP:
 	for 1<<uint(t.Second())&s.Second == 0 {
 		if !added {
 			added = true
-			t = t.Truncate(time.Second)
+			t = time.Date(t.Year(), t.Month(), t.Day(), t.Hour(), t.Minute(), t.Second(), 0, t.Location())
 		}
 		t = t.Add(1 * time.Second)
 

vendor/github.com/robfig/cron/spec_test.go

@@ -109,44 +109,13 @@ func TestNext(t *testing.T) {
 		// Leap year
 		{"Mon Jul 9 23:35 2012", "0 0 0 29 Feb ?", "Mon Feb 29 00:00 2016"},
 
-		// Daylight savings time 2am EST (-5) -> 3am EDT (-4)
+		// Daylight savings time EST -> EDT
 		{"2012-03-11T00:00:00-0500", "0 30 2 11 Mar ?", "2013-03-11T02:30:00-0400"},
 
-		// hourly job
+		// Daylight savings time EDT -> EST
-		{"2012-03-11T00:00:00-0500", "0 0 * * * ?", "2012-03-11T01:00:00-0500"},
-		{"2012-03-11T01:00:00-0500", "0 0 * * * ?", "2012-03-11T03:00:00-0400"},
-		{"2012-03-11T03:00:00-0400", "0 0 * * * ?", "2012-03-11T04:00:00-0400"},
-		{"2012-03-11T04:00:00-0400", "0 0 * * * ?", "2012-03-11T05:00:00-0400"},
-
-		// 1am nightly job
-		{"2012-03-11T00:00:00-0500", "0 0 1 * * ?", "2012-03-11T01:00:00-0500"},
-		{"2012-03-11T01:00:00-0500", "0 0 1 * * ?", "2012-03-12T01:00:00-0400"},
-
-		// 2am nightly job (skipped)
-		{"2012-03-11T00:00:00-0500", "0 0 2 * * ?", "2012-03-12T02:00:00-0400"},
-
-		// Daylight savings time 2am EDT (-4) => 1am EST (-5)
 		{"2012-11-04T00:00:00-0400", "0 30 2 04 Nov ?", "2012-11-04T02:30:00-0500"},
 		{"2012-11-04T01:45:00-0400", "0 30 1 04 Nov ?", "2012-11-04T01:30:00-0500"},
 
-		// hourly job
-		{"2012-11-04T00:00:00-0400", "0 0 * * * ?", "2012-11-04T01:00:00-0400"},
-		{"2012-11-04T01:00:00-0400", "0 0 * * * ?", "2012-11-04T01:00:00-0500"},
-		{"2012-11-04T01:00:00-0500", "0 0 * * * ?", "2012-11-04T02:00:00-0500"},
-
-		// 1am nightly job (runs twice)
-		{"2012-11-04T00:00:00-0400", "0 0 1 * * ?", "2012-11-04T01:00:00-0400"},
-		{"2012-11-04T01:00:00-0400", "0 0 1 * * ?", "2012-11-04T01:00:00-0500"},
-		{"2012-11-04T01:00:00-0500", "0 0 1 * * ?", "2012-11-05T01:00:00-0500"},
-
-		// 2am nightly job
-		{"2012-11-04T00:00:00-0400", "0 0 2 * * ?", "2012-11-04T02:00:00-0500"},
-		{"2012-11-04T02:00:00-0500", "0 0 2 * * ?", "2012-11-05T02:00:00-0500"},
-
-		// 3am nightly job
-		{"2012-11-04T00:00:00-0400", "0 0 3 * * ?", "2012-11-04T03:00:00-0500"},
-		{"2012-11-04T03:00:00-0500", "0 0 3 * * ?", "2012-11-05T03:00:00-0500"},
-
 		// Unsatisfiable
 		{"Mon Jul 9 23:35 2012", "0 0 0 30 Feb ?", ""},
 		{"Mon Jul 9 23:35 2012", "0 0 0 31 Apr ?", ""},

vendor/github.com/spf13/pflag/.gitignore

@@ -0,0 +1,2 @@
+.idea/*
+

vendor/github.com/spf13/pflag/.travis.yml

@@ -3,14 +3,14 @@ sudo: false
 language: go
 
 go:
-        - 1.5.4
+  - 1.7.3
-        - 1.6.3
+  - 1.8.1
-        - 1.7
   - tip
 
 matrix:
   allow_failures:
     - go: tip
+
 install:
   - go get github.com/golang/lint/golint
   - export PATH=$GOPATH/bin:$PATH

vendor/github.com/spf13/pflag/README.md

@@ -1,4 +1,6 @@
 [![Build Status](https://travis-ci.org/spf13/pflag.svg?branch=master)](https://travis-ci.org/spf13/pflag)
+[![Go Report Card](https://goreportcard.com/badge/github.com/spf13/pflag)](https://goreportcard.com/report/github.com/spf13/pflag)
+[![GoDoc](https://godoc.org/github.com/spf13/pflag?status.svg)](https://godoc.org/github.com/spf13/pflag)
 
 ## Description
 
@@ -106,9 +108,9 @@ that give one-letter shorthands for flags. You can use these by appending
 var ip = flag.IntP("flagname", "f", 1234, "help message")
 var flagvar bool
 func init() {
-    flag.BoolVarP("boolname", "b", true, "help message")
+	flag.BoolVarP(&flagvar, "boolname", "b", true, "help message")
 }
-flag.VarP(&flagVar, "varname", "v", 1234, "help message")
+flag.VarP(&flagVal, "varname", "v", "help message")
 ```
 
 Shorthand letters can be used with single dashes on the command line.
@@ -244,6 +246,25 @@ It is possible to mark a flag as hidden, meaning it will still function as norma
 flags.MarkHidden("secretFlag")
 ```
 
+## Disable sorting of flags
+`pflag` allows you to disable sorting of flags for help and usage message.
+
+**Example**:
+```go
+flags.BoolP("verbose", "v", false, "verbose output")
+flags.String("coolflag", "yeaah", "it's really cool flag")
+flags.Int("usefulflag", 777, "sometimes it's very useful")
+flags.SortFlags = false
+flags.PrintDefaults()
+```
+**Output**:
+```
+  -v, --verbose           verbose output
+      --coolflag string   it's really cool flag (default "yeaah")
+      --usefulflag int    sometimes it's very useful (default 777)
+```
+
+
 ## Supporting Go flags when using pflag
 In order to support flags defined using Go's `flag` package, they must be added to the `pflag` flagset. This is usually necessary
 to support flags defined by third-party dependencies (e.g. `golang/glog`).
@@ -268,8 +289,8 @@ func main() {
 You can see the full reference documentation of the pflag package
 [at godoc.org][3], or through go's standard documentation system by
 running `godoc -http=:6060` and browsing to
-[http://localhost:6060/pkg/github.com/ogier/pflag][2] after
+[http://localhost:6060/pkg/github.com/spf13/pflag][2] after
 installation.
 
-[2]: http://localhost:6060/pkg/github.com/ogier/pflag
+[2]: http://localhost:6060/pkg/github.com/spf13/pflag
-[3]: http://godoc.org/github.com/ogier/pflag
+[3]: http://godoc.org/github.com/spf13/pflag

vendor/github.com/spf13/pflag/bool_slice.go

@@ -0,0 +1,147 @@
+package pflag
+
+import (
+	"io"
+	"strconv"
+	"strings"
+)
+
+// -- boolSlice Value
+type boolSliceValue struct {
+	value   *[]bool
+	changed bool
+}
+
+func newBoolSliceValue(val []bool, p *[]bool) *boolSliceValue {
+	bsv := new(boolSliceValue)
+	bsv.value = p
+	*bsv.value = val
+	return bsv
+}
+
+// Set converts, and assigns, the comma-separated boolean argument string representation as the []bool value of this flag.
+// If Set is called on a flag that already has a []bool assigned, the newly converted values will be appended.
+func (s *boolSliceValue) Set(val string) error {
+
+	// remove all quote characters
+	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
+
+	// read flag arguments with CSV parser
+	boolStrSlice, err := readAsCSV(rmQuote.Replace(val))
+	if err != nil && err != io.EOF {
+		return err
+	}
+
+	// parse boolean values into slice
+	out := make([]bool, 0, len(boolStrSlice))
+	for _, boolStr := range boolStrSlice {
+		b, err := strconv.ParseBool(strings.TrimSpace(boolStr))
+		if err != nil {
+			return err
+		}
+		out = append(out, b)
+	}
+
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+
+	s.changed = true
+
+	return nil
+}
+
+// Type returns a string that uniquely represents this flag's type.
+func (s *boolSliceValue) Type() string {
+	return "boolSlice"
+}
+
+// String defines a "native" format for this boolean slice flag value.
+func (s *boolSliceValue) String() string {
+
+	boolStrSlice := make([]string, len(*s.value))
+	for i, b := range *s.value {
+		boolStrSlice[i] = strconv.FormatBool(b)
+	}
+
+	out, _ := writeAsCSV(boolStrSlice)
+
+	return "[" + out + "]"
+}
+
+func boolSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []bool{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]bool, len(ss))
+	for i, t := range ss {
+		var err error
+		out[i], err = strconv.ParseBool(t)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return out, nil
+}
+
+// GetBoolSlice returns the []bool value of a flag with the given name.
+func (f *FlagSet) GetBoolSlice(name string) ([]bool, error) {
+	val, err := f.getFlagType(name, "boolSlice", boolSliceConv)
+	if err != nil {
+		return []bool{}, err
+	}
+	return val.([]bool), nil
+}
+
+// BoolSliceVar defines a boolSlice flag with specified name, default value, and usage string.
+// The argument p points to a []bool variable in which to store the value of the flag.
+func (f *FlagSet) BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
+	f.VarP(newBoolSliceValue(value, p), name, "", usage)
+}
+
+// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
+	f.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
+}
+
+// BoolSliceVar defines a []bool flag with specified name, default value, and usage string.
+// The argument p points to a []bool variable in which to store the value of the flag.
+func BoolSliceVar(p *[]bool, name string, value []bool, usage string) {
+	CommandLine.VarP(newBoolSliceValue(value, p), name, "", usage)
+}
+
+// BoolSliceVarP is like BoolSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func BoolSliceVarP(p *[]bool, name, shorthand string, value []bool, usage string) {
+	CommandLine.VarP(newBoolSliceValue(value, p), name, shorthand, usage)
+}
+
+// BoolSlice defines a []bool flag with specified name, default value, and usage string.
+// The return value is the address of a []bool variable that stores the value of the flag.
+func (f *FlagSet) BoolSlice(name string, value []bool, usage string) *[]bool {
+	p := []bool{}
+	f.BoolSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
+	p := []bool{}
+	f.BoolSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// BoolSlice defines a []bool flag with specified name, default value, and usage string.
+// The return value is the address of a []bool variable that stores the value of the flag.
+func BoolSlice(name string, value []bool, usage string) *[]bool {
+	return CommandLine.BoolSliceP(name, "", value, usage)
+}
+
+// BoolSliceP is like BoolSlice, but accepts a shorthand letter that can be used after a single dash.
+func BoolSliceP(name, shorthand string, value []bool, usage string) *[]bool {
+	return CommandLine.BoolSliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/bool_slice_test.go

@@ -0,0 +1,215 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func setUpBSFlagSet(bsp *[]bool) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.BoolSliceVar(bsp, "bs", []bool{}, "Command separated list!")
+	return f
+}
+
+func setUpBSFlagSetWithDefault(bsp *[]bool) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.BoolSliceVar(bsp, "bs", []bool{false, true}, "Command separated list!")
+	return f
+}
+
+func TestEmptyBS(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	if len(getBS) != 0 {
+		t.Fatalf("got bs %v with len=%d but expected length=0", getBS, len(getBS))
+	}
+}
+
+func TestBS(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+
+	vals := []string{"1", "F", "TRUE", "0"}
+	arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected is[%d] to be %s but got: %t", i, vals[i], v)
+		}
+	}
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %s but got: %t from GetBoolSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestBSDefault(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSetWithDefault(&bs)
+
+	vals := []string{"false", "T"}
+
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatal("got an error from GetBoolSlice():", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+}
+
+func TestBSWithDefault(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSetWithDefault(&bs)
+
+	vals := []string{"FALSE", "1"}
+	arg := fmt.Sprintf("--bs=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t but got: %t", i, b, v)
+		}
+	}
+
+	getBS, err := f.GetBoolSlice("bs")
+	if err != nil {
+		t.Fatal("got an error from GetBoolSlice():", err)
+	}
+	for i, v := range getBS {
+		b, err := strconv.ParseBool(vals[i])
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if b != v {
+			t.Fatalf("expected bs[%d] to be %t from GetBoolSlice but got: %t", i, b, v)
+		}
+	}
+}
+
+func TestBSCalledTwice(t *testing.T) {
+	var bs []bool
+	f := setUpBSFlagSet(&bs)
+
+	in := []string{"T,F", "T"}
+	expected := []bool{true, false, true}
+	argfmt := "--bs=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range bs {
+		if expected[i] != v {
+			t.Fatalf("expected bs[%d] to be %t but got %t", i, expected[i], v)
+		}
+	}
+}
+
+func TestBSBadQuoting(t *testing.T) {
+
+	tests := []struct {
+		Want    []bool
+		FlagArg []string
+	}{
+		{
+			Want:    []bool{true, false, true},
+			FlagArg: []string{"1", "0", "true"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"True", "F"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"T", "0"},
+		},
+		{
+			Want:    []bool{true, false},
+			FlagArg: []string{"1", "0"},
+		},
+		{
+			Want:    []bool{true, false, false},
+			FlagArg: []string{"true,false", "false"},
+		},
+		{
+			Want:    []bool{true, false, false, true, false, true, false},
+			FlagArg: []string{`"true,false,false,1,0,     T"`, " false "},
+		},
+		{
+			Want:    []bool{false, false, true, false, true, false, true},
+			FlagArg: []string{`"0, False,  T,false  , true,F"`, "true"},
+		},
+	}
+
+	for i, test := range tests {
+
+		var bs []bool
+		f := setUpBSFlagSet(&bs)
+
+		if err := f.Parse([]string{fmt.Sprintf("--bs=%s", strings.Join(test.FlagArg, ","))}); err != nil {
+			t.Fatalf("flag parsing failed with error: %s\nparsing:\t%#v\nwant:\t\t%#v",
+				err, test.FlagArg, test.Want[i])
+		}
+
+		for j, b := range bs {
+			if b != test.Want[j] {
+				t.Fatalf("bad value parsed for test %d on bool %d:\nwant:\t%t\ngot:\t%t", i, j, test.Want[j], b)
+			}
+		}
+	}
+}

vendor/github.com/spf13/pflag/bool_test.go

@@ -6,7 +6,6 @@ package pflag
 
 import (
 	"bytes"
-	"fmt"
 	"strconv"
 	"testing"
 )
@@ -48,7 +47,7 @@ func (v *triStateValue) String() string {
 	if *v == triStateMaybe {
 		return strTriStateMaybe
 	}
-	return fmt.Sprintf("%v", bool(*v == triStateTrue))
+	return strconv.FormatBool(*v == triStateTrue)
 }
 
 // The type of the flag as required by the pflag.Value interface

vendor/github.com/spf13/pflag/count.go

@@ -83,7 +83,9 @@ func (f *FlagSet) CountP(name, shorthand string, usage string) *int {
 	return p
 }
 
-// Count like Count only the flag is placed on the CommandLine isntead of a given flag set
+// Count defines a count flag with specified name, default value, and usage string.
+// The return value is the address of an int variable that stores the value of the flag.
+// A count flag will add 1 to its value evey time it is found on the command line
 func Count(name string, usage string) *int {
 	return CommandLine.CountP(name, "", usage)
 }

vendor/github.com/spf13/pflag/count_test.go

@@ -1,13 +1,10 @@
 package pflag
 
 import (
-	"fmt"
 	"os"
 	"testing"
 )
 
-var _ = fmt.Printf
-
 func setUpCount(c *int) *FlagSet {
 	f := NewFlagSet("test", ContinueOnError)
 	f.CountVarP(c, "verbose", "v", "a counter")

vendor/github.com/spf13/pflag/example_test.go

@@ -2,76 +2,35 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// These examples demonstrate more intricate uses of the flag package.
 package pflag_test
 
 import (
-	"errors"
 	"fmt"
-	"strings"
-	"time"
 
-	flag "github.com/spf13/pflag"
+	"github.com/spf13/pflag"
 )
 
-// Example 1: A single string flag called "species" with default value "gopher".
+func ExampleShorthandLookup() {
-var species = flag.String("species", "gopher", "the species we are studying")
+	name := "verbose"
+	short := name[:1]
 
-// Example 2: A flag with a shorthand letter.
+	pflag.BoolP(name, short, false, "verbose output")
-var gopherType = flag.StringP("gopher_type", "g", "pocket", "the variety of gopher")
 
-// Example 3: A user-defined flag type, a slice of durations.
+	// len(short) must be == 1
-type interval []time.Duration
+	flag := pflag.ShorthandLookup(short)
 
-// String is the method to format the flag's value, part of the flag.Value interface.
+	fmt.Println(flag.Name)
-// The String method's output will be used in diagnostics.
-func (i *interval) String() string {
-	return fmt.Sprint(*i)
 }
 
-func (i *interval) Type() string {
+func ExampleFlagSet_ShorthandLookup() {
-	return "interval"
+	name := "verbose"
-}
+	short := name[:1]
-
+
-// Set is the method to set the flag value, part of the flag.Value interface.
+	fs := pflag.NewFlagSet("Example", pflag.ContinueOnError)
-// Set's argument is a string to be parsed to set the flag.
+	fs.BoolP(name, short, false, "verbose output")
-// It's a comma-separated list, so we split it.
+
-func (i *interval) Set(value string) error {
+	// len(short) must be == 1
-	// If we wanted to allow the flag to be set multiple times,
+	flag := fs.ShorthandLookup(short)
-	// accumulating values, we would delete this if statement.
+
-	// That would permit usages such as
+	fmt.Println(flag.Name)
-	//	-deltaT 10s -deltaT 15s
-	// and other combinations.
-	if len(*i) > 0 {
-		return errors.New("interval flag already set")
-	}
-	for _, dt := range strings.Split(value, ",") {
-		duration, err := time.ParseDuration(dt)
-		if err != nil {
-			return err
-		}
-		*i = append(*i, duration)
-	}
-	return nil
-}
-
-// Define a flag to accumulate durations. Because it has a special type,
-// we need to use the Var function and therefore create the flag during
-// init.
-
-var intervalFlag interval
-
-func init() {
-	// Tie the command-line flag to the intervalFlag variable and
-	// set a usage message.
-	flag.Var(&intervalFlag, "deltaT", "comma-separated list of intervals to use between events")
-}
-
-func Example() {
-	// All the interesting pieces are with the variables declared above, but
-	// to enable the flag package to see the flags defined there, one must
-	// execute, typically at the start of main (not init!):
-	//	flag.Parse()
-	// We don't run it here because this is not a main function and
-	// the testing suite has already parsed the flags.
 }

vendor/github.com/spf13/pflag/flag.go

@@ -16,9 +16,9 @@ pflag is a drop-in replacement of Go's native flag package. If you import
 pflag under the name "flag" then all code should continue to function
 with no changes.
 
-	import flag "github.com/ogier/pflag"
+	import flag "github.com/spf13/pflag"
 
-	There is one exception to this: if you directly instantiate the Flag struct
+There is one exception to this: if you directly instantiate the Flag struct
 there is one more field "Shorthand" that you will need to set.
 Most code never instantiates this struct directly, and instead uses
 functions such as String(), BoolVar(), and Var(), and is therefore
@@ -134,14 +134,21 @@ type FlagSet struct {
 	// a custom error handler.
 	Usage func()
 
+	// SortFlags is used to indicate, if user wants to have sorted flags in
+	// help/usage messages.
+	SortFlags bool
+
 	name              string
 	parsed            bool
 	actual            map[NormalizedName]*Flag
+	orderedActual     []*Flag
+	sortedActual      []*Flag
 	formal            map[NormalizedName]*Flag
+	orderedFormal     []*Flag
+	sortedFormal      []*Flag
 	shorthands        map[byte]*Flag
 	args              []string // arguments after flags
 	argsLenAtDash     int      // len(args) when a '--' was located when parsing, or -1 if no --
-	exitOnError       bool     // does the program exit if there's an error?
 	errorHandling     ErrorHandling
 	output            io.Writer // nil means stderr; use out() accessor
 	interspersed      bool      // allow interspersed option/non-option args
@@ -156,7 +163,7 @@ type Flag struct {
 	Value               Value               // value as set
 	DefValue            string              // default value (as text); for usage message
 	Changed             bool                // If the user set the value (or if left to default)
-	NoOptDefVal         string              //default value (as text); if the flag is on the command line without any options
+	NoOptDefVal         string              // default value (as text); if the flag is on the command line without any options
 	Deprecated          string              // If this flag is deprecated, this string is the new or now thing to use
 	Hidden              bool                // used by cobra.Command to allow flags to be hidden from help/usage text
 	ShorthandDeprecated string              // If the shorthand of this flag is deprecated, this string is the new or now thing to use
@@ -194,11 +201,13 @@ func sortFlags(flags map[NormalizedName]*Flag) []*Flag {
 // "--getUrl" which may also be translated to "geturl" and everything will work.
 func (f *FlagSet) SetNormalizeFunc(n func(f *FlagSet, name string) NormalizedName) {
 	f.normalizeNameFunc = n
-	for k, v := range f.formal {
+	f.sortedFormal = f.sortedFormal[:0]
-		delete(f.formal, k)
+	for k, v := range f.orderedFormal {
-		nname := f.normalizeFlagName(string(k))
+		delete(f.formal, NormalizedName(v.Name))
-		f.formal[nname] = v
+		nname := f.normalizeFlagName(v.Name)
 		v.Name = string(nname)
+		f.formal[nname] = v
+		f.orderedFormal[k] = v
 	}
 }
 
@@ -229,10 +238,25 @@ func (f *FlagSet) SetOutput(output io.Writer) {
 	f.output = output
 }
 
-// VisitAll visits the flags in lexicographical order, calling fn for each.
+// VisitAll visits the flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
 // It visits all flags, even those not set.
 func (f *FlagSet) VisitAll(fn func(*Flag)) {
-	for _, flag := range sortFlags(f.formal) {
+	if len(f.formal) == 0 {
+		return
+	}
+
+	var flags []*Flag
+	if f.SortFlags {
+		if len(f.formal) != len(f.sortedFormal) {
+			f.sortedFormal = sortFlags(f.formal)
+		}
+		flags = f.sortedFormal
+	} else {
+		flags = f.orderedFormal
+	}
+
+	for _, flag := range flags {
 		fn(flag)
 	}
 }
@@ -253,22 +277,39 @@ func (f *FlagSet) HasAvailableFlags() bool {
 	return false
 }
 
-// VisitAll visits the command-line flags in lexicographical order, calling
+// VisitAll visits the command-line flags in lexicographical order or
-// fn for each.  It visits all flags, even those not set.
+// in primordial order if f.SortFlags is false, calling fn for each.
+// It visits all flags, even those not set.
 func VisitAll(fn func(*Flag)) {
 	CommandLine.VisitAll(fn)
 }
 
-// Visit visits the flags in lexicographical order, calling fn for each.
+// Visit visits the flags in lexicographical order or
+// in primordial order if f.SortFlags is false, calling fn for each.
 // It visits only those flags that have been set.
 func (f *FlagSet) Visit(fn func(*Flag)) {
-	for _, flag := range sortFlags(f.actual) {
+	if len(f.actual) == 0 {
+		return
+	}
+
+	var flags []*Flag
+	if f.SortFlags {
+		if len(f.actual) != len(f.sortedActual) {
+			f.sortedActual = sortFlags(f.actual)
+		}
+		flags = f.sortedActual
+	} else {
+		flags = f.orderedActual
+	}
+
+	for _, flag := range flags {
 		fn(flag)
 	}
 }
 
-// Visit visits the command-line flags in lexicographical order, calling fn
+// Visit visits the command-line flags in lexicographical order or
-// for each.  It visits only those flags that have been set.
+// in primordial order if f.SortFlags is false, calling fn for each.
+// It visits only those flags that have been set.
 func Visit(fn func(*Flag)) {
 	CommandLine.Visit(fn)
 }
@@ -278,6 +319,22 @@ func (f *FlagSet) Lookup(name string) *Flag {
 	return f.lookup(f.normalizeFlagName(name))
 }
 
+// ShorthandLookup returns the Flag structure of the short handed flag,
+// returning nil if none exists.
+// It panics, if len(name) > 1.
+func (f *FlagSet) ShorthandLookup(name string) *Flag {
+	if name == "" {
+		return nil
+	}
+	if len(name) > 1 {
+		msg := fmt.Sprintf("can not look up shorthand which is more than one ASCII character: %q", name)
+		fmt.Fprintf(f.out(), msg)
+		panic(msg)
+	}
+	c := name[0]
+	return f.shorthands[c]
+}
+
 // lookup returns the Flag structure of the named flag, returning nil if none exists.
 func (f *FlagSet) lookup(name NormalizedName) *Flag {
 	return f.formal[name]
@@ -319,7 +376,7 @@ func (f *FlagSet) MarkDeprecated(name string, usageMessage string) error {
 	if flag == nil {
 		return fmt.Errorf("flag %q does not exist", name)
 	}
-	if len(usageMessage) == 0 {
+	if usageMessage == "" {
 		return fmt.Errorf("deprecated message for flag %q must be set", name)
 	}
 	flag.Deprecated = usageMessage
@@ -334,7 +391,7 @@ func (f *FlagSet) MarkShorthandDeprecated(name string, usageMessage string) erro
 	if flag == nil {
 		return fmt.Errorf("flag %q does not exist", name)
 	}
-	if len(usageMessage) == 0 {
+	if usageMessage == "" {
 		return fmt.Errorf("deprecated message for flag %q must be set", name)
 	}
 	flag.ShorthandDeprecated = usageMessage
@@ -358,6 +415,12 @@ func Lookup(name string) *Flag {
 	return CommandLine.Lookup(name)
 }
 
+// ShorthandLookup returns the Flag structure of the short handed flag,
+// returning nil if none exists.
+func ShorthandLookup(name string) *Flag {
+	return CommandLine.ShorthandLookup(name)
+}
+
 // Set sets the value of the named flag.
 func (f *FlagSet) Set(name, value string) error {
 	normalName := f.normalizeFlagName(name)
@@ -365,17 +428,28 @@ func (f *FlagSet) Set(name, value string) error {
 	if !ok {
 		return fmt.Errorf("no such flag -%v", name)
 	}
+
 	err := flag.Value.Set(value)
 	if err != nil {
-		return err
+		var flagName string
+		if flag.Shorthand != "" && flag.ShorthandDeprecated == "" {
+			flagName = fmt.Sprintf("-%s, --%s", flag.Shorthand, flag.Name)
+		} else {
+			flagName = fmt.Sprintf("--%s", flag.Name)
 		}
+		return fmt.Errorf("invalid argument %q for %q flag: %v", value, flagName, err)
+	}
+
 	if f.actual == nil {
 		f.actual = make(map[NormalizedName]*Flag)
 	}
 	f.actual[normalName] = flag
+	f.orderedActual = append(f.orderedActual, flag)
+
 	flag.Changed = true
-	if len(flag.Deprecated) > 0 {
+
-		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
+	if flag.Deprecated != "" {
+		fmt.Fprintf(f.out(), "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
 	}
 	return nil
 }
@@ -416,7 +490,7 @@ func Set(name, value string) error {
 // otherwise, the default values of all defined flags in the set.
 func (f *FlagSet) PrintDefaults() {
 	usages := f.FlagUsages()
-	fmt.Fprintf(f.out(), "%s", usages)
+	fmt.Fprint(f.out(), usages)
 }
 
 // defaultIsZeroValue returns true if the default value for this flag represents
@@ -487,34 +561,101 @@ func UnquoteUsage(flag *Flag) (name string, usage string) {
 	return
 }
 
-// FlagUsages Returns a string containing the usage information for all flags in
+// Splits the string `s` on whitespace into an initial substring up to
-// the FlagSet
+// `i` runes in length and the remainder. Will go `slop` over `i` if
-func (f *FlagSet) FlagUsages() string {
+// that encompasses the entire string (which allows the caller to
-	x := new(bytes.Buffer)
+// avoid short orphan words on the final line).
+func wrapN(i, slop int, s string) (string, string) {
+	if i+slop > len(s) {
+		return s, ""
+	}
+
+	w := strings.LastIndexAny(s[:i], " \t")
+	if w <= 0 {
+		return s, ""
+	}
+
+	return s[:w], s[w+1:]
+}
+
+// Wraps the string `s` to a maximum width `w` with leading indent
+// `i`. The first line is not indented (this is assumed to be done by
+// caller). Pass `w` == 0 to do no wrapping
+func wrap(i, w int, s string) string {
+	if w == 0 {
+		return s
+	}
+
+	// space between indent i and end of line width w into which
+	// we should wrap the text.
+	wrap := w - i
+
+	var r, l string
+
+	// Not enough space for sensible wrapping. Wrap as a block on
+	// the next line instead.
+	if wrap < 24 {
+		i = 16
+		wrap = w - i
+		r += "\n" + strings.Repeat(" ", i)
+	}
+	// If still not enough space then don't even try to wrap.
+	if wrap < 24 {
+		return s
+	}
+
+	// Try to avoid short orphan words on the final line, by
+	// allowing wrapN to go a bit over if that would fit in the
+	// remainder of the line.
+	slop := 5
+	wrap = wrap - slop
+
+	// Handle first line, which is indented by the caller (or the
+	// special case above)
+	l, s = wrapN(wrap, slop, s)
+	r = r + l
+
+	// Now wrap the rest
+	for s != "" {
+		var t string
+
+		t, s = wrapN(wrap, slop, s)
+		r = r + "\n" + strings.Repeat(" ", i) + t
+	}
+
+	return r
+
+}
+
+// FlagUsagesWrapped returns a string containing the usage information
+// for all flags in the FlagSet. Wrapped to `cols` columns (0 for no
+// wrapping)
+func (f *FlagSet) FlagUsagesWrapped(cols int) string {
+	buf := new(bytes.Buffer)
 
 	lines := make([]string, 0, len(f.formal))
 
 	maxlen := 0
 	f.VisitAll(func(flag *Flag) {
-		if len(flag.Deprecated) > 0 || flag.Hidden {
+		if flag.Deprecated != "" || flag.Hidden {
 			return
 		}
 
 		line := ""
-		if len(flag.Shorthand) > 0 && len(flag.ShorthandDeprecated) == 0 {
+		if flag.Shorthand != "" && flag.ShorthandDeprecated == "" {
 			line = fmt.Sprintf("  -%s, --%s", flag.Shorthand, flag.Name)
 		} else {
 			line = fmt.Sprintf("      --%s", flag.Name)
 		}
 
 		varname, usage := UnquoteUsage(flag)
-		if len(varname) > 0 {
+		if varname != "" {
 			line += " " + varname
 		}
-		if len(flag.NoOptDefVal) > 0 {
+		if flag.NoOptDefVal != "" {
 			switch flag.Value.Type() {
 			case "string":
-				line += fmt.Sprintf("[=%q]", flag.NoOptDefVal)
+				line += fmt.Sprintf("[=\"%s\"]", flag.NoOptDefVal)
 			case "bool":
 				if flag.NoOptDefVal != "true" {
 					line += fmt.Sprintf("[=%s]", flag.NoOptDefVal)
@@ -546,10 +687,17 @@ func (f *FlagSet) FlagUsages() string {
 	for _, line := range lines {
 		sidx := strings.Index(line, "\x00")
 		spacing := strings.Repeat(" ", maxlen-sidx)
-		fmt.Fprintln(x, line[:sidx], spacing, line[sidx+1:])
+		// maxlen + 2 comes from + 1 for the \x00 and + 1 for the (deliberate) off-by-one in maxlen-sidx
+		fmt.Fprintln(buf, line[:sidx], spacing, wrap(maxlen+2, cols, line[sidx+1:]))
 	}
 
-	return x.String()
+	return buf.String()
+}
+
+// FlagUsages returns a string containing the usage information for all flags in
+// the FlagSet
+func (f *FlagSet) FlagUsages() string {
+	return f.FlagUsagesWrapped(0)
 }
 
 // PrintDefaults prints to standard error the default values of all defined command-line flags.
@@ -635,16 +783,15 @@ func (f *FlagSet) VarPF(value Value, name, shorthand, usage string) *Flag {
 
 // VarP is like Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) VarP(value Value, name, shorthand, usage string) {
-	_ = f.VarPF(value, name, shorthand, usage)
+	f.VarPF(value, name, shorthand, usage)
 }
 
 // AddFlag will add the flag to the FlagSet
 func (f *FlagSet) AddFlag(flag *Flag) {
-	// Call normalizeFlagName function only once
 	normalizedFlagName := f.normalizeFlagName(flag.Name)
 
-	_, alreadythere := f.formal[normalizedFlagName]
+	_, alreadyThere := f.formal[normalizedFlagName]
-	if alreadythere {
+	if alreadyThere {
 		msg := fmt.Sprintf("%s flag redefined: %s", f.name, flag.Name)
 		fmt.Fprintln(f.out(), msg)
 		panic(msg) // Happens only if flags are declared with identical names
@@ -655,28 +802,31 @@ func (f *FlagSet) AddFlag(flag *Flag) {
 
 	flag.Name = string(normalizedFlagName)
 	f.formal[normalizedFlagName] = flag
+	f.orderedFormal = append(f.orderedFormal, flag)
 
-	if len(flag.Shorthand) == 0 {
+	if flag.Shorthand == "" {
 		return
 	}
 	if len(flag.Shorthand) > 1 {
-		fmt.Fprintf(f.out(), "%s shorthand more than ASCII character: %s\n", f.name, flag.Shorthand)
+		msg := fmt.Sprintf("%q shorthand is more than one ASCII character", flag.Shorthand)
-		panic("shorthand is more than one character")
+		fmt.Fprintf(f.out(), msg)
+		panic(msg)
 	}
 	if f.shorthands == nil {
 		f.shorthands = make(map[byte]*Flag)
 	}
 	c := flag.Shorthand[0]
-	old, alreadythere := f.shorthands[c]
+	used, alreadyThere := f.shorthands[c]
-	if alreadythere {
+	if alreadyThere {
-		fmt.Fprintf(f.out(), "%s shorthand reused: %q for %s already used for %s\n", f.name, c, flag.Name, old.Name)
+		msg := fmt.Sprintf("unable to redefine %q shorthand in %q flagset: it's already used for %q flag", c, f.name, used.Name)
-		panic("shorthand redefinition")
+		fmt.Fprintf(f.out(), msg)
+		panic(msg)
 	}
 	f.shorthands[c] = flag
 }
 
 // AddFlagSet adds one FlagSet to another. If a flag is already present in f
-// the flag from newSet will be ignored
+// the flag from newSet will be ignored.
 func (f *FlagSet) AddFlagSet(newSet *FlagSet) {
 	if newSet == nil {
 		return
@@ -724,45 +874,18 @@ func (f *FlagSet) usage() {
 	}
 }
 
-func (f *FlagSet) setFlag(flag *Flag, value string, origArg string) error {
+func (f *FlagSet) parseLongArg(s string, args []string, fn parseFunc) (a []string, err error) {
-	if err := flag.Value.Set(value); err != nil {
-		return f.failf("invalid argument %q for %s: %v", value, origArg, err)
-	}
-	// mark as visited for Visit()
-	if f.actual == nil {
-		f.actual = make(map[NormalizedName]*Flag)
-	}
-	f.actual[f.normalizeFlagName(flag.Name)] = flag
-	flag.Changed = true
-	if len(flag.Deprecated) > 0 {
-		fmt.Fprintf(os.Stderr, "Flag --%s has been deprecated, %s\n", flag.Name, flag.Deprecated)
-	}
-	if len(flag.ShorthandDeprecated) > 0 && containsShorthand(origArg, flag.Shorthand) {
-		fmt.Fprintf(os.Stderr, "Flag shorthand -%s has been deprecated, %s\n", flag.Shorthand, flag.ShorthandDeprecated)
-	}
-	return nil
-}
-
-func containsShorthand(arg, shorthand string) bool {
-	// filter out flags --<flag_name>
-	if strings.HasPrefix(arg, "-") {
-		return false
-	}
-	arg = strings.SplitN(arg, "=", 2)[0]
-	return strings.Contains(arg, shorthand)
-}
-
-func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error) {
 	a = args
 	name := s[2:]
 	if len(name) == 0 || name[0] == '-' || name[0] == '=' {
 		err = f.failf("bad flag syntax: %s", s)
 		return
 	}
+
 	split := strings.SplitN(name, "=", 2)
 	name = split[0]
-	flag, alreadythere := f.formal[f.normalizeFlagName(name)]
+	flag, exists := f.formal[f.normalizeFlagName(name)]
-	if !alreadythere {
+	if !exists {
 		if name == "help" { // special case for nice help message.
 			f.usage()
 			return a, ErrHelp
@@ -770,11 +893,12 @@ func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error)
 		err = f.failf("unknown flag: --%s", name)
 		return
 	}
+
 	var value string
 	if len(split) == 2 {
 		// '--flag=arg'
 		value = split[1]
-	} else if len(flag.NoOptDefVal) > 0 {
+	} else if flag.NoOptDefVal != "" {
 		// '--flag' (arg was optional)
 		value = flag.NoOptDefVal
 	} else if len(a) > 0 {
@@ -786,55 +910,68 @@ func (f *FlagSet) parseLongArg(s string, args []string) (a []string, err error)
 		err = f.failf("flag needs an argument: %s", s)
 		return
 	}
-	err = f.setFlag(flag, value, s)
+
+	err = fn(flag, value)
 	return
 }
 
-func (f *FlagSet) parseSingleShortArg(shorthands string, args []string) (outShorts string, outArgs []string, err error) {
+func (f *FlagSet) parseSingleShortArg(shorthands string, args []string, fn parseFunc) (outShorts string, outArgs []string, err error) {
 	if strings.HasPrefix(shorthands, "test.") {
 		return
 	}
+
 	outArgs = args
 	outShorts = shorthands[1:]
 	c := shorthands[0]
 
-	flag, alreadythere := f.shorthands[c]
+	flag, exists := f.shorthands[c]
-	if !alreadythere {
+	if !exists {
 		if c == 'h' { // special case for nice help message.
 			f.usage()
 			err = ErrHelp
 			return
 		}
-		//TODO continue on error
 		err = f.failf("unknown shorthand flag: %q in -%s", c, shorthands)
 		return
 	}
+
 	var value string
 	if len(shorthands) > 2 && shorthands[1] == '=' {
+		// '-f=arg'
 		value = shorthands[2:]
 		outShorts = ""
-	} else if len(flag.NoOptDefVal) > 0 {
+	} else if flag.NoOptDefVal != "" {
+		// '-f' (arg was optional)
 		value = flag.NoOptDefVal
 	} else if len(shorthands) > 1 {
+		// '-farg'
 		value = shorthands[1:]
 		outShorts = ""
 	} else if len(args) > 0 {
+		// '-f arg'
 		value = args[0]
 		outArgs = args[1:]
 	} else {
+		// '-f' (arg was required)
 		err = f.failf("flag needs an argument: %q in -%s", c, shorthands)
 		return
 	}
-	err = f.setFlag(flag, value, shorthands)
+
+	if flag.ShorthandDeprecated != "" {
+		fmt.Fprintf(f.out(), "Flag shorthand -%s has been deprecated, %s\n", flag.Shorthand, flag.ShorthandDeprecated)
+	}
+
+	err = fn(flag, value)
 	return
 }
 
-func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error) {
+func (f *FlagSet) parseShortArg(s string, args []string, fn parseFunc) (a []string, err error) {
 	a = args
 	shorthands := s[1:]
 
+	// "shorthands" can be a series of shorthand letters of flags (e.g. "-vvv").
 	for len(shorthands) > 0 {
-		shorthands, a, err = f.parseSingleShortArg(shorthands, args)
+		shorthands, a, err = f.parseSingleShortArg(shorthands, args, fn)
 		if err != nil {
 			return
 		}
@@ -843,7 +980,7 @@ func (f *FlagSet) parseShortArg(s string, args []string) (a []string, err error)
 	return
 }
 
-func (f *FlagSet) parseArgs(args []string) (err error) {
+func (f *FlagSet) parseArgs(args []string, fn parseFunc) (err error) {
 	for len(args) > 0 {
 		s := args[0]
 		args = args[1:]
@@ -863,9 +1000,9 @@ func (f *FlagSet) parseArgs(args []string) (err error) {
 				f.args = append(f.args, args...)
 				break
 			}
-			args, err = f.parseLongArg(s, args)
+			args, err = f.parseLongArg(s, args, fn)
 		} else {
-			args, err = f.parseShortArg(s, args)
+			args, err = f.parseShortArg(s, args, fn)
 		}
 		if err != nil {
 			return
@@ -880,8 +1017,43 @@ func (f *FlagSet) parseArgs(args []string) (err error) {
 // The return value will be ErrHelp if -help was set but not defined.
 func (f *FlagSet) Parse(arguments []string) error {
 	f.parsed = true
+
+	if len(arguments) < 0 {
+		return nil
+	}
+
 	f.args = make([]string, 0, len(arguments))
-	err := f.parseArgs(arguments)
+
+	set := func(flag *Flag, value string) error {
+		return f.Set(flag.Name, value)
+	}
+
+	err := f.parseArgs(arguments, set)
+	if err != nil {
+		switch f.errorHandling {
+		case ContinueOnError:
+			return err
+		case ExitOnError:
+			os.Exit(2)
+		case PanicOnError:
+			panic(err)
+		}
+	}
+	return nil
+}
+
+type parseFunc func(flag *Flag, value string) error
+
+// ParseAll parses flag definitions from the argument list, which should not
+// include the command name. The arguments for fn are flag and value. Must be
+// called after all flags in the FlagSet are defined and before flags are
+// accessed by the program. The return value will be ErrHelp if -help was set
+// but not defined.
+func (f *FlagSet) ParseAll(arguments []string, fn func(flag *Flag, value string) error) error {
+	f.parsed = true
+	f.args = make([]string, 0, len(arguments))
+
+	err := f.parseArgs(arguments, fn)
 	if err != nil {
 		switch f.errorHandling {
 		case ContinueOnError:
@@ -907,6 +1079,14 @@ func Parse() {
 	CommandLine.Parse(os.Args[1:])
 }
 
+// ParseAll parses the command-line flags from os.Args[1:] and called fn for each.
+// The arguments for fn are flag and value. Must be called after all flags are
+// defined and before flags are accessed by the program.
+func ParseAll(fn func(flag *Flag, value string) error) {
+	// Ignore errors; CommandLine is set for ExitOnError.
+	CommandLine.ParseAll(os.Args[1:], fn)
+}
+
 // SetInterspersed sets whether to support interspersed option/non-option arguments.
 func SetInterspersed(interspersed bool) {
 	CommandLine.SetInterspersed(interspersed)
@@ -920,14 +1100,15 @@ func Parsed() bool {
 // CommandLine is the default set of command-line flags, parsed from os.Args.
 var CommandLine = NewFlagSet(os.Args[0], ExitOnError)
 
-// NewFlagSet returns a new, empty flag set with the specified name and
+// NewFlagSet returns a new, empty flag set with the specified name,
-// error handling property.
+// error handling property and SortFlags set to true.
 func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
 	f := &FlagSet{
 		name:          name,
 		errorHandling: errorHandling,
 		argsLenAtDash: -1,
 		interspersed:  true,
+		SortFlags:     true,
 	}
 	return f
 }

vendor/github.com/spf13/pflag/flag_test.go

@@ -333,6 +333,59 @@ func testParse(f *FlagSet, t *testing.T) {
 	}
 }
 
+func testParseAll(f *FlagSet, t *testing.T) {
+	if f.Parsed() {
+		t.Error("f.Parse() = true before Parse")
+	}
+	f.BoolP("boola", "a", false, "bool value")
+	f.BoolP("boolb", "b", false, "bool2 value")
+	f.BoolP("boolc", "c", false, "bool3 value")
+	f.BoolP("boold", "d", false, "bool4 value")
+	f.StringP("stringa", "s", "0", "string value")
+	f.StringP("stringz", "z", "0", "string value")
+	f.StringP("stringx", "x", "0", "string value")
+	f.StringP("stringy", "y", "0", "string value")
+	f.Lookup("stringx").NoOptDefVal = "1"
+	args := []string{
+		"-ab",
+		"-cs=xx",
+		"--stringz=something",
+		"-d=true",
+		"-x",
+		"-y",
+		"ee",
+	}
+	want := []string{
+		"boola", "true",
+		"boolb", "true",
+		"boolc", "true",
+		"stringa", "xx",
+		"stringz", "something",
+		"boold", "true",
+		"stringx", "1",
+		"stringy", "ee",
+	}
+	got := []string{}
+	store := func(flag *Flag, value string) error {
+		got = append(got, flag.Name)
+		if len(value) > 0 {
+			got = append(got, value)
+		}
+		return nil
+	}
+	if err := f.ParseAll(args, store); err != nil {
+		t.Errorf("expected no error, got %s", err)
+	}
+	if !f.Parsed() {
+		t.Errorf("f.Parse() = false after Parse")
+	}
+	if !reflect.DeepEqual(got, want) {
+		t.Errorf("f.ParseAll() fail to restore the args")
+		t.Errorf("Got: %v", got)
+		t.Errorf("Want: %v", want)
+	}
+}
+
 func TestShorthand(t *testing.T) {
 	f := NewFlagSet("shorthand", ContinueOnError)
 	if f.Parsed() {
@@ -393,21 +446,62 @@ func TestShorthand(t *testing.T) {
 	}
 }
 
+func TestShorthandLookup(t *testing.T) {
+	f := NewFlagSet("shorthand", ContinueOnError)
+	if f.Parsed() {
+		t.Error("f.Parse() = true before Parse")
+	}
+	f.BoolP("boola", "a", false, "bool value")
+	f.BoolP("boolb", "b", false, "bool2 value")
+	args := []string{
+		"-ab",
+	}
+	f.SetOutput(ioutil.Discard)
+	if err := f.Parse(args); err != nil {
+		t.Error("expected no error, got ", err)
+	}
+	if !f.Parsed() {
+		t.Error("f.Parse() = false after Parse")
+	}
+	flag := f.ShorthandLookup("a")
+	if flag == nil {
+		t.Errorf("f.ShorthandLookup(\"a\") returned nil")
+	}
+	if flag.Name != "boola" {
+		t.Errorf("f.ShorthandLookup(\"a\") found %q instead of \"boola\"", flag.Name)
+	}
+	flag = f.ShorthandLookup("")
+	if flag != nil {
+		t.Errorf("f.ShorthandLookup(\"\") did not return nil")
+	}
+	defer func() {
+		recover()
+	}()
+	flag = f.ShorthandLookup("ab")
+	// should NEVER get here. lookup should panic. defer'd func should recover it.
+	t.Errorf("f.ShorthandLookup(\"ab\") did not panic")
+}
+
 func TestParse(t *testing.T) {
 	ResetForTesting(func() { t.Error("bad parse") })
 	testParse(GetCommandLine(), t)
 }
 
+func TestParseAll(t *testing.T) {
+	ResetForTesting(func() { t.Error("bad parse") })
+	testParseAll(GetCommandLine(), t)
+}
+
 func TestFlagSetParse(t *testing.T) {
 	testParse(NewFlagSet("test", ContinueOnError), t)
 }
 
 func TestChangedHelper(t *testing.T) {
 	f := NewFlagSet("changedtest", ContinueOnError)
-	_ = f.Bool("changed", false, "changed bool")
+	f.Bool("changed", false, "changed bool")
-	_ = f.Bool("settrue", true, "true to true")
+	f.Bool("settrue", true, "true to true")
-	_ = f.Bool("setfalse", false, "false to false")
+	f.Bool("setfalse", false, "false to false")
-	_ = f.Bool("unchanged", false, "unchanged bool")
+	f.Bool("unchanged", false, "unchanged bool")
 
 	args := []string{"--changed", "--settrue", "--setfalse=false"}
 	if err := f.Parse(args); err != nil {
@@ -878,6 +972,7 @@ const defaultOutput = `      --A                         for bootstrapping, allo
       --Alongflagname             disable bounds checking
   -C, --CCC                       a boolean defaulting to true (default true)
       --D path                    set relative path for local imports
+  -E, --EEE num[=1234]            a num with NoOptDefVal (default 4321)
       --F number                  a non-zero number (default 2.7)
       --G float                   a float that defaults to zero
       --IP ip                     IP address with no default
@@ -929,6 +1024,8 @@ func TestPrintDefaults(t *testing.T) {
 	fs.Lookup("ND1").NoOptDefVal = "bar"
 	fs.Int("ND2", 1234, "a `num` with NoOptDefVal")
 	fs.Lookup("ND2").NoOptDefVal = "4321"
+	fs.IntP("EEE", "E", 4321, "a `num` with NoOptDefVal")
+	fs.ShorthandLookup("E").NoOptDefVal = "1234"
 	fs.StringSlice("StringSlice", []string{}, "string slice with zero default")
 	fs.StringArray("StringArray", []string{}, "string array with zero default")
 
@@ -946,3 +1043,43 @@ func TestPrintDefaults(t *testing.T) {
 		t.Errorf("got %q want %q\n", got, defaultOutput)
 	}
 }
+
+func TestVisitAllFlagOrder(t *testing.T) {
+	fs := NewFlagSet("TestVisitAllFlagOrder", ContinueOnError)
+	fs.SortFlags = false
+	// https://github.com/spf13/pflag/issues/120
+	fs.SetNormalizeFunc(func(f *FlagSet, name string) NormalizedName {
+		return NormalizedName(name)
+	})
+
+	names := []string{"C", "B", "A", "D"}
+	for _, name := range names {
+		fs.Bool(name, false, "")
+	}
+
+	i := 0
+	fs.VisitAll(func(f *Flag) {
+		if names[i] != f.Name {
+			t.Errorf("Incorrect order. Expected %v, got %v", names[i], f.Name)
+		}
+		i++
+	})
+}
+
+func TestVisitFlagOrder(t *testing.T) {
+	fs := NewFlagSet("TestVisitFlagOrder", ContinueOnError)
+	fs.SortFlags = false
+	names := []string{"C", "B", "A", "D"}
+	for _, name := range names {
+		fs.Bool(name, false, "")
+		fs.Set(name, "true")
+	}
+
+	i := 0
+	fs.Visit(func(f *Flag) {
+		if names[i] != f.Name {
+			t.Errorf("Incorrect order. Expected %v, got %v", names[i], f.Name)
+		}
+		i++
+	})
+}

vendor/github.com/spf13/pflag/golangflag.go

@@ -6,13 +6,10 @@ package pflag
 
 import (
 	goflag "flag"
-	"fmt"
 	"reflect"
 	"strings"
 )
 
-var _ = fmt.Print
-
 // flagValueWrapper implements pflag.Value around a flag.Value.  The main
 // difference here is the addition of the Type method that returns a string
 // name of the type.  As this is generally unknown, we approximate that with

vendor/github.com/spf13/pflag/ip.go

@@ -6,8 +6,6 @@ import (
 	"strings"
 )
 
-var _ = strings.TrimSpace
-
 // -- net.IP value
 type ipValue net.IP
 

vendor/github.com/spf13/pflag/ip_slice.go

@@ -0,0 +1,148 @@
+package pflag
+
+import (
+	"fmt"
+	"io"
+	"net"
+	"strings"
+)
+
+// -- ipSlice Value
+type ipSliceValue struct {
+	value   *[]net.IP
+	changed bool
+}
+
+func newIPSliceValue(val []net.IP, p *[]net.IP) *ipSliceValue {
+	ipsv := new(ipSliceValue)
+	ipsv.value = p
+	*ipsv.value = val
+	return ipsv
+}
+
+// Set converts, and assigns, the comma-separated IP argument string representation as the []net.IP value of this flag.
+// If Set is called on a flag that already has a []net.IP assigned, the newly converted values will be appended.
+func (s *ipSliceValue) Set(val string) error {
+
+	// remove all quote characters
+	rmQuote := strings.NewReplacer(`"`, "", `'`, "", "`", "")
+
+	// read flag arguments with CSV parser
+	ipStrSlice, err := readAsCSV(rmQuote.Replace(val))
+	if err != nil && err != io.EOF {
+		return err
+	}
+
+	// parse ip values into slice
+	out := make([]net.IP, 0, len(ipStrSlice))
+	for _, ipStr := range ipStrSlice {
+		ip := net.ParseIP(strings.TrimSpace(ipStr))
+		if ip == nil {
+			return fmt.Errorf("invalid string being converted to IP address: %s", ipStr)
+		}
+		out = append(out, ip)
+	}
+
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+
+	s.changed = true
+
+	return nil
+}
+
+// Type returns a string that uniquely represents this flag's type.
+func (s *ipSliceValue) Type() string {
+	return "ipSlice"
+}
+
+// String defines a "native" format for this net.IP slice flag value.
+func (s *ipSliceValue) String() string {
+
+	ipStrSlice := make([]string, len(*s.value))
+	for i, ip := range *s.value {
+		ipStrSlice[i] = ip.String()
+	}
+
+	out, _ := writeAsCSV(ipStrSlice)
+
+	return "[" + out + "]"
+}
+
+func ipSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Emtpy string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []net.IP{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]net.IP, len(ss))
+	for i, sval := range ss {
+		ip := net.ParseIP(strings.TrimSpace(sval))
+		if ip == nil {
+			return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval)
+		}
+		out[i] = ip
+	}
+	return out, nil
+}
+
+// GetIPSlice returns the []net.IP value of a flag with the given name
+func (f *FlagSet) GetIPSlice(name string) ([]net.IP, error) {
+	val, err := f.getFlagType(name, "ipSlice", ipSliceConv)
+	if err != nil {
+		return []net.IP{}, err
+	}
+	return val.([]net.IP), nil
+}
+
+// IPSliceVar defines a ipSlice flag with specified name, default value, and usage string.
+// The argument p points to a []net.IP variable in which to store the value of the flag.
+func (f *FlagSet) IPSliceVar(p *[]net.IP, name string, value []net.IP, usage string) {
+	f.VarP(newIPSliceValue(value, p), name, "", usage)
+}
+
+// IPSliceVarP is like IPSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPSliceVarP(p *[]net.IP, name, shorthand string, value []net.IP, usage string) {
+	f.VarP(newIPSliceValue(value, p), name, shorthand, usage)
+}
+
+// IPSliceVar defines a []net.IP flag with specified name, default value, and usage string.
+// The argument p points to a []net.IP variable in which to store the value of the flag.
+func IPSliceVar(p *[]net.IP, name string, value []net.IP, usage string) {
+	CommandLine.VarP(newIPSliceValue(value, p), name, "", usage)
+}
+
+// IPSliceVarP is like IPSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func IPSliceVarP(p *[]net.IP, name, shorthand string, value []net.IP, usage string) {
+	CommandLine.VarP(newIPSliceValue(value, p), name, shorthand, usage)
+}
+
+// IPSlice defines a []net.IP flag with specified name, default value, and usage string.
+// The return value is the address of a []net.IP variable that stores the value of that flag.
+func (f *FlagSet) IPSlice(name string, value []net.IP, usage string) *[]net.IP {
+	p := []net.IP{}
+	f.IPSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// IPSliceP is like IPSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) IPSliceP(name, shorthand string, value []net.IP, usage string) *[]net.IP {
+	p := []net.IP{}
+	f.IPSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// IPSlice defines a []net.IP flag with specified name, default value, and usage string.
+// The return value is the address of a []net.IP variable that stores the value of the flag.
+func IPSlice(name string, value []net.IP, usage string) *[]net.IP {
+	return CommandLine.IPSliceP(name, "", value, usage)
+}
+
+// IPSliceP is like IPSlice, but accepts a shorthand letter that can be used after a single dash.
+func IPSliceP(name, shorthand string, value []net.IP, usage string) *[]net.IP {
+	return CommandLine.IPSliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/ip_slice_test.go

@@ -0,0 +1,222 @@
+package pflag
+
+import (
+	"fmt"
+	"net"
+	"strings"
+	"testing"
+)
+
+func setUpIPSFlagSet(ipsp *[]net.IP) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.IPSliceVar(ipsp, "ips", []net.IP{}, "Command separated list!")
+	return f
+}
+
+func setUpIPSFlagSetWithDefault(ipsp *[]net.IP) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.IPSliceVar(ipsp, "ips",
+		[]net.IP{
+			net.ParseIP("192.168.1.1"),
+			net.ParseIP("0:0:0:0:0:0:0:1"),
+		},
+		"Command separated list!")
+	return f
+}
+
+func TestEmptyIP(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice():", err)
+	}
+	if len(getIPS) != 0 {
+		t.Fatalf("got ips %v with len=%d but expected length=0", getIPS, len(getIPS))
+	}
+}
+
+func TestIPS(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+
+	vals := []string{"192.168.1.1", "10.0.0.1", "0:0:0:0:0:0:0:2"}
+	arg := fmt.Sprintf("--ips=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s from GetIPSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSDefault(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSetWithDefault(&ips)
+
+	vals := []string{"192.168.1.1", "0:0:0:0:0:0:0:1"}
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice")
+	}
+	for i, v := range getIPS {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSWithDefault(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSetWithDefault(&ips)
+
+	vals := []string{"192.168.1.1", "0:0:0:0:0:0:0:1"}
+	arg := fmt.Sprintf("--ips=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+
+	getIPS, err := f.GetIPSlice("ips")
+	if err != nil {
+		t.Fatal("got an error from GetIPSlice")
+	}
+	for i, v := range getIPS {
+		if ip := net.ParseIP(vals[i]); ip == nil {
+			t.Fatalf("invalid string being converted to IP address: %s", vals[i])
+		} else if !ip.Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, vals[i], v)
+		}
+	}
+}
+
+func TestIPSCalledTwice(t *testing.T) {
+	var ips []net.IP
+	f := setUpIPSFlagSet(&ips)
+
+	in := []string{"192.168.1.2,0:0:0:0:0:0:0:1", "10.0.0.1"}
+	expected := []net.IP{net.ParseIP("192.168.1.2"), net.ParseIP("0:0:0:0:0:0:0:1"), net.ParseIP("10.0.0.1")}
+	argfmt := "ips=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range ips {
+		if !expected[i].Equal(v) {
+			t.Fatalf("expected ips[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}
+
+func TestIPSBadQuoting(t *testing.T) {
+
+	tests := []struct {
+		Want    []net.IP
+		FlagArg []string
+	}{
+		{
+			Want: []net.IP{
+				net.ParseIP("a4ab:61d:f03e:5d7d:fad7:d4c2:a1a5:568"),
+				net.ParseIP("203.107.49.208"),
+				net.ParseIP("14.57.204.90"),
+			},
+			FlagArg: []string{
+				"a4ab:61d:f03e:5d7d:fad7:d4c2:a1a5:568",
+				"203.107.49.208",
+				"14.57.204.90",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("204.228.73.195"),
+				net.ParseIP("86.141.15.94"),
+			},
+			FlagArg: []string{
+				"204.228.73.195",
+				"86.141.15.94",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("c70c:db36:3001:890f:c6ea:3f9b:7a39:cc3f"),
+				net.ParseIP("4d17:1d6e:e699:bd7a:88c5:5e7e:ac6a:4472"),
+			},
+			FlagArg: []string{
+				"c70c:db36:3001:890f:c6ea:3f9b:7a39:cc3f",
+				"4d17:1d6e:e699:bd7a:88c5:5e7e:ac6a:4472",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("5170:f971:cfac:7be3:512a:af37:952c:bc33"),
+				net.ParseIP("93.21.145.140"),
+				net.ParseIP("2cac:61d3:c5ff:6caf:73e0:1b1a:c336:c1ca"),
+			},
+			FlagArg: []string{
+				" 5170:f971:cfac:7be3:512a:af37:952c:bc33  , 93.21.145.140     ",
+				"2cac:61d3:c5ff:6caf:73e0:1b1a:c336:c1ca",
+			},
+		},
+		{
+			Want: []net.IP{
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+				net.ParseIP("2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"),
+			},
+			FlagArg: []string{
+				`"2e5e:66b2:6441:848:5b74:76ea:574c:3a7b,        2e5e:66b2:6441:848:5b74:76ea:574c:3a7b,2e5e:66b2:6441:848:5b74:76ea:574c:3a7b     "`,
+				" 2e5e:66b2:6441:848:5b74:76ea:574c:3a7b"},
+		},
+	}
+
+	for i, test := range tests {
+
+		var ips []net.IP
+		f := setUpIPSFlagSet(&ips)
+
+		if err := f.Parse([]string{fmt.Sprintf("--ips=%s", strings.Join(test.FlagArg, ","))}); err != nil {
+			t.Fatalf("flag parsing failed with error: %s\nparsing:\t%#v\nwant:\t\t%s",
+				err, test.FlagArg, test.Want[i])
+		}
+
+		for j, b := range ips {
+			if !b.Equal(test.Want[j]) {
+				t.Fatalf("bad value parsed for test %d on net.IP %d:\nwant:\t%s\ngot:\t%s", i, j, test.Want[j], b)
+			}
+		}
+	}
+}

vendor/github.com/spf13/pflag/ipnet.go

@@ -27,8 +27,6 @@ func (*ipNetValue) Type() string {
 	return "ipNet"
 }
 
-var _ = strings.TrimSpace
-
 func newIPNetValue(val net.IPNet, p *net.IPNet) *ipNetValue {
 	*p = val
 	return (*ipNetValue)(p)

vendor/github.com/spf13/pflag/string_array.go

@@ -1,12 +1,5 @@
 package pflag
 
-import (
-	"fmt"
-	"strings"
-)
-
-var _ = fmt.Fprint
-
 // -- stringArray Value
 type stringArrayValue struct {
 	value   *[]string
@@ -40,7 +33,7 @@ func (s *stringArrayValue) String() string {
 }
 
 func stringArrayConv(sval string) (interface{}, error) {
-	sval = strings.Trim(sval, "[]")
+	sval = sval[1 : len(sval)-1]
 	// An empty string would cause a array with one (empty) string
 	if len(sval) == 0 {
 		return []string{}, nil

vendor/github.com/spf13/pflag/string_array_test.go

@@ -192,3 +192,42 @@ func TestSAWithSpecialChar(t *testing.T) {
 		}
 	}
 }
+
+func TestSAWithSquareBrackets(t *testing.T) {
+	var sa []string
+	f := setUpSAFlagSet(&sa)
+
+	in := []string{"][]-[", "[a-z]", "[a-z]+"}
+	expected := []string{"][]-[", "[a-z]", "[a-z]+"}
+	argfmt := "--sa=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	arg3 := fmt.Sprintf(argfmt, in[2])
+	err := f.Parse([]string{arg1, arg2, arg3})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(sa) {
+		t.Fatalf("expected number of sa to be %d but got: %d", len(expected), len(sa))
+	}
+	for i, v := range sa {
+		if expected[i] != v {
+			t.Fatalf("expected sa[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+
+	values, err := f.GetStringArray("sa")
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(values) {
+		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
+	}
+	for i, v := range values {
+		if expected[i] != v {
+			t.Fatalf("expected got sa[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}

vendor/github.com/spf13/pflag/string_slice.go

@@ -3,12 +3,9 @@ package pflag
 import (
 	"bytes"
 	"encoding/csv"
-	"fmt"
 	"strings"
 )
 
-var _ = fmt.Fprint
-
 // -- stringSlice Value
 type stringSliceValue struct {
 	value   *[]string
@@ -39,7 +36,7 @@ func writeAsCSV(vals []string) (string, error) {
 		return "", err
 	}
 	w.Flush()
-	return strings.TrimSuffix(b.String(), fmt.Sprintln()), nil
+	return strings.TrimSuffix(b.String(), "\n"), nil
 }
 
 func (s *stringSliceValue) Set(val string) error {
@@ -66,7 +63,7 @@ func (s *stringSliceValue) String() string {
 }
 
 func stringSliceConv(sval string) (interface{}, error) {
-	sval = strings.Trim(sval, "[]")
+	sval = sval[1 : len(sval)-1]
 	// An empty string would cause a slice with one (empty) string
 	if len(sval) == 0 {
 		return []string{}, nil

vendor/github.com/spf13/pflag/string_slice_test.go

@@ -213,3 +213,41 @@ func TestSSWithComma(t *testing.T) {
 		}
 	}
 }
+
+func TestSSWithSquareBrackets(t *testing.T) {
+	var ss []string
+	f := setUpSSFlagSet(&ss)
+
+	in := []string{`"[a-z]"`, `"[a-z]+"`}
+	expected := []string{"[a-z]", "[a-z]+"}
+	argfmt := "--ss=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(ss) {
+		t.Fatalf("expected number of ss to be %d but got: %d", len(expected), len(ss))
+	}
+	for i, v := range ss {
+		if expected[i] != v {
+			t.Fatalf("expected ss[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+
+	values, err := f.GetStringSlice("ss")
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	if len(expected) != len(values) {
+		t.Fatalf("expected number of values to be %d but got: %d", len(expected), len(values))
+	}
+	for i, v := range values {
+		if expected[i] != v {
+			t.Fatalf("expected got ss[%d] to be %s but got: %s", i, expected[i], v)
+		}
+	}
+}

vendor/github.com/spf13/pflag/uint_slice.go

@@ -0,0 +1,126 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- uintSlice Value
+type uintSliceValue struct {
+	value   *[]uint
+	changed bool
+}
+
+func newUintSliceValue(val []uint, p *[]uint) *uintSliceValue {
+	uisv := new(uintSliceValue)
+	uisv.value = p
+	*uisv.value = val
+	return uisv
+}
+
+func (s *uintSliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]uint, len(ss))
+	for i, d := range ss {
+		u, err := strconv.ParseUint(d, 10, 0)
+		if err != nil {
+			return err
+		}
+		out[i] = uint(u)
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *uintSliceValue) Type() string {
+	return "uintSlice"
+}
+
+func (s *uintSliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%d", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func uintSliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []uint{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]uint, len(ss))
+	for i, d := range ss {
+		u, err := strconv.ParseUint(d, 10, 0)
+		if err != nil {
+			return nil, err
+		}
+		out[i] = uint(u)
+	}
+	return out, nil
+}
+
+// GetUintSlice returns the []uint value of a flag with the given name.
+func (f *FlagSet) GetUintSlice(name string) ([]uint, error) {
+	val, err := f.getFlagType(name, "uintSlice", uintSliceConv)
+	if err != nil {
+		return []uint{}, err
+	}
+	return val.([]uint), nil
+}
+
+// UintSliceVar defines a uintSlice flag with specified name, default value, and usage string.
+// The argument p points to a []uint variable in which to store the value of the flag.
+func (f *FlagSet) UintSliceVar(p *[]uint, name string, value []uint, usage string) {
+	f.VarP(newUintSliceValue(value, p), name, "", usage)
+}
+
+// UintSliceVarP is like UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
+	f.VarP(newUintSliceValue(value, p), name, shorthand, usage)
+}
+
+// UintSliceVar defines a uint[] flag with specified name, default value, and usage string.
+// The argument p points to a uint[] variable in which to store the value of the flag.
+func UintSliceVar(p *[]uint, name string, value []uint, usage string) {
+	CommandLine.VarP(newUintSliceValue(value, p), name, "", usage)
+}
+
+// UintSliceVarP is like the UintSliceVar, but accepts a shorthand letter that can be used after a single dash.
+func UintSliceVarP(p *[]uint, name, shorthand string, value []uint, usage string) {
+	CommandLine.VarP(newUintSliceValue(value, p), name, shorthand, usage)
+}
+
+// UintSlice defines a []uint flag with specified name, default value, and usage string.
+// The return value is the address of a []uint variable that stores the value of the flag.
+func (f *FlagSet) UintSlice(name string, value []uint, usage string) *[]uint {
+	p := []uint{}
+	f.UintSliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
+	p := []uint{}
+	f.UintSliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// UintSlice defines a []uint flag with specified name, default value, and usage string.
+// The return value is the address of a []uint variable that stores the value of the flag.
+func UintSlice(name string, value []uint, usage string) *[]uint {
+	return CommandLine.UintSliceP(name, "", value, usage)
+}
+
+// UintSliceP is like UintSlice, but accepts a shorthand letter that can be used after a single dash.
+func UintSliceP(name, shorthand string, value []uint, usage string) *[]uint {
+	return CommandLine.UintSliceP(name, shorthand, value, usage)
+}

vendor/github.com/spf13/pflag/uint_slice_test.go

@@ -0,0 +1,161 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+	"testing"
+)
+
+func setUpUISFlagSet(uisp *[]uint) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.UintSliceVar(uisp, "uis", []uint{}, "Command separated list!")
+	return f
+}
+
+func setUpUISFlagSetWithDefault(uisp *[]uint) *FlagSet {
+	f := NewFlagSet("test", ContinueOnError)
+	f.UintSliceVar(uisp, "uis", []uint{0, 1}, "Command separated list!")
+	return f
+}
+
+func TestEmptyUIS(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	if len(getUIS) != 0 {
+		t.Fatalf("got is %v with len=%d but expected length=0", getUIS, len(getUIS))
+	}
+}
+
+func TestUIS(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+
+	vals := []string{"1", "2", "4", "3"}
+	arg := fmt.Sprintf("--uis=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %s but got %d", i, vals[i], v)
+		}
+	}
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatalf("got error: %v", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %s but got: %d from GetUintSlice", i, vals[i], v)
+		}
+	}
+}
+
+func TestUISDefault(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSetWithDefault(&uis)
+
+	vals := []string{"0", "1"}
+
+	err := f.Parse([]string{})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expect uis[%d] to be %d but got: %d", i, u, v)
+		}
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatal("got an error from GetIntSlice():", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+}
+
+func TestUISWithDefault(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSetWithDefault(&uis)
+
+	vals := []string{"1", "2"}
+	arg := fmt.Sprintf("--uis=%s", strings.Join(vals, ","))
+	err := f.Parse([]string{arg})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+
+	getUIS, err := f.GetUintSlice("uis")
+	if err != nil {
+		t.Fatal("got an error from GetUintSlice():", err)
+	}
+	for i, v := range getUIS {
+		u, err := strconv.ParseUint(vals[i], 10, 0)
+		if err != nil {
+			t.Fatalf("got error: %v", err)
+		}
+		if uint(u) != v {
+			t.Fatalf("expected uis[%d] to be %d from GetUintSlice but got: %d", i, u, v)
+		}
+	}
+}
+
+func TestUISCalledTwice(t *testing.T) {
+	var uis []uint
+	f := setUpUISFlagSet(&uis)
+
+	in := []string{"1,2", "3"}
+	expected := []int{1, 2, 3}
+	argfmt := "--uis=%s"
+	arg1 := fmt.Sprintf(argfmt, in[0])
+	arg2 := fmt.Sprintf(argfmt, in[1])
+	err := f.Parse([]string{arg1, arg2})
+	if err != nil {
+		t.Fatal("expected no error; got", err)
+	}
+	for i, v := range uis {
+		if uint(expected[i]) != v {
+			t.Fatalf("expected uis[%d] to be %d but got: %d", i, expected[i], v)
+		}
+	}
+}

vendor/gopkg.in/validator.v2/.gitignore

@@ -0,0 +1,23 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe
+*.test

vendor/gopkg.in/validator.v2/.travis.yml

@@ -0,0 +1,10 @@
+language: go
+go:
+  - 1.5
+  - 1.6
+  - 1.7
+go_import_path: gopkg.in/validator.v2
+script:
+  - go test -race -v -bench=.
+notifications:
+  email: false

vendor/gopkg.in/validator.v2/LICENSE

@@ -0,0 +1,201 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
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+      and distribution as defined by Sections 1 through 9 of this document.
+
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+
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+      outstanding shares, or (iii) beneficial ownership of such entity.
+
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+
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+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
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+
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+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

vendor/gopkg.in/validator.v2/README.md

@@ -0,0 +1,167 @@
+Package validator
+================
+
+Package validator implements variable validations
+
+Installation
+============
+
+Just use go get.
+
+	go get gopkg.in/validator.v2
+
+And then just import the package into your own code.
+
+	import (
+		"gopkg.in/validator.v2"
+	)
+
+Usage
+=====
+
+Please see http://godoc.org/gopkg.in/validator.v2 for detailed usage docs.
+A simple example would be.
+
+	type NewUserRequest struct {
+		Username string `validate:"min=3,max=40,regexp=^[a-zA-Z]*$"`
+		Name string     `validate:"nonzero"`
+		Age int         `validate:"min=21"`
+		Password string `validate:"min=8"`
+	}
+
+	nur := NewUserRequest{Username: "something", Age: 20}
+	if errs := validator.Validate(nur); errs != nil {
+		// values not valid, deal with errors here
+	}
+
+
+Builtin validators
+
+Here is the list of validators buildin in the package.
+
+	len
+		For numeric numbers, max will simply make sure that the
+		value is equal to the parameter given. For strings, it
+		checks that the string length is exactly that number of
+		characters. For slices,	arrays, and maps, validates the
+		number of items. (Usage: len=10)
+	
+	max
+		For numeric numbers, max will simply make sure that the
+		value is lesser or equal to the parameter given. For strings,
+		it checks that the string length is at most that number of
+		characters. For slices,	arrays, and maps, validates the
+		number of items. (Usage: max=10)
+	
+	min
+		For numeric numbers, min will simply make sure that the value
+		is greater or equal to the parameter given. For strings, it
+		checks that the string length is at least that number of
+		characters. For slices, arrays, and maps, validates the
+		number of items. (Usage: min=10)
+	
+	nonzero
+		This validates that the value is not zero. The appropriate
+		zero value is given by the Go spec (e.g. for int it's 0, for
+		string it's "", for pointers is nil, etc.) For structs, it
+		will not check to see if the struct itself has all zero
+		values, instead use a pointer or put nonzero on the struct's
+		keys that you care about. (Usage: nonzero)
+	
+	regexp
+		Only valid for string types, it will validator that the
+		value matches the regular expression provided as parameter.
+		(Usage: regexp=^a.*b$)
+
+Custom validators
+
+It is possible to define custom validators by using SetValidationFunc.
+First, one needs to create a validation function.
+
+	// Very simple validator
+	func notZZ(v interface{}, param string) error {
+		st := reflect.ValueOf(v)
+		if st.Kind() != reflect.String {
+			return errors.New("notZZ only validates strings")
+		}
+		if st.String() == "ZZ" {
+			return errors.New("value cannot be ZZ")
+		}
+		return nil
+	}
+
+Then one needs to add it to the list of validators and give it a "tag"
+name.
+
+	validator.SetValidationFunc("notzz", notZZ)
+
+Then it is possible to use the notzz validation tag. This will print
+"Field A error: value cannot be ZZ"
+
+	type T struct {
+		A string  `validate:"nonzero,notzz"`
+	}
+	t := T{"ZZ"}
+	if errs := validator.Validate(t); errs != nil {
+		fmt.Printf("Field A error: %s\n", errs["A"][0])
+	}
+
+You can also have multiple sets of validator rules with SetTag().
+
+	type T struct {
+		A int `foo:"nonzero" bar:"min=10"`
+	}
+	t := T{5}
+	SetTag("foo")
+	validator.Validate(t) // valid as it's nonzero
+	SetTag("bar")
+	validator.Validate(t) // invalid as it's less than 10
+
+SetTag is probably better used with multiple validators.
+
+	fooValidator := validator.NewValidator()
+	fooValidator.SetTag("foo")
+	barValidator := validator.NewValidator()
+	barValidator.SetTag("bar")
+	fooValidator.Validate(t)
+	barValidator.Validate(t)
+
+This keeps the default validator's tag clean. Again, please refer to
+godocs for a lot of more examples and different uses.
+
+Pull requests policy
+====================
+
+tl;dr. Contributions are welcome.
+
+The repository is organized in version branches. Pull requests to, say, the
+`v2` branch that break API compatibility will not be accepted. It is okay to
+break the API in master, *not in the branches*.
+
+As for validation functions, the preference is to keep the main code simple
+and add most new functions to the validator-contrib repository.
+
+https://github.com/go-validator/validator-contrib
+
+For improvements and/or fixes to the builtin validation functions, please
+make sure the behaviour will not break existing functionality in the branches.
+If you see a case where the functionality of the builtin will change
+significantly, please send a pull request against `master`. We can discuss then
+whether the changes should be incorporated in the version branches as well.
+
+License
+=======
+
+Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.

vendor/gopkg.in/validator.v2/builtins.go

@@ -0,0 +1,246 @@
+// Package validator implements value validations
+//
+// Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validator
+
+import (
+	"reflect"
+	"regexp"
+	"strconv"
+)
+
+// nonzero tests whether a variable value non-zero
+// as defined by the golang spec.
+func nonzero(v interface{}, param string) error {
+	st := reflect.ValueOf(v)
+	valid := true
+	switch st.Kind() {
+	case reflect.String:
+		valid = len(st.String()) != 0
+	case reflect.Ptr, reflect.Interface:
+		valid = !st.IsNil()
+	case reflect.Slice, reflect.Map, reflect.Array:
+		valid = st.Len() != 0
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		valid = st.Int() != 0
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		valid = st.Uint() != 0
+	case reflect.Float32, reflect.Float64:
+		valid = st.Float() != 0
+	case reflect.Bool:
+		valid = st.Bool()
+	case reflect.Invalid:
+		valid = false // always invalid
+	case reflect.Struct:
+		valid = true // always valid since only nil pointers are empty
+	default:
+		return ErrUnsupported
+	}
+
+	if !valid {
+		return ErrZeroValue
+	}
+	return nil
+}
+
+// length tests whether a variable's length is equal to a given
+// value. For strings it tests the number of characters whereas
+// for maps and slices it tests the number of items.
+func length(v interface{}, param string) error {
+	st := reflect.ValueOf(v)
+	valid := true
+	switch st.Kind() {
+	case reflect.String:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		valid = int64(len(st.String())) == p
+	case reflect.Slice, reflect.Map, reflect.Array:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		valid = int64(st.Len()) == p
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		valid = st.Int() == p
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		p, err := asUint(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		valid = st.Uint() == p
+	case reflect.Float32, reflect.Float64:
+		p, err := asFloat(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		valid = st.Float() == p
+	default:
+		return ErrUnsupported
+	}
+	if !valid {
+		return ErrLen
+	}
+	return nil
+}
+
+// min tests whether a variable value is larger or equal to a given
+// number. For number types, it's a simple lesser-than test; for
+// strings it tests the number of characters whereas for maps
+// and slices it tests the number of items.
+func min(v interface{}, param string) error {
+	st := reflect.ValueOf(v)
+	invalid := false
+	switch st.Kind() {
+	case reflect.String:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = int64(len(st.String())) < p
+	case reflect.Slice, reflect.Map, reflect.Array:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = int64(st.Len()) < p
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Int() < p
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		p, err := asUint(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Uint() < p
+	case reflect.Float32, reflect.Float64:
+		p, err := asFloat(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Float() < p
+	default:
+		return ErrUnsupported
+	}
+	if invalid {
+		return ErrMin
+	}
+	return nil
+}
+
+// max tests whether a variable value is lesser than a given
+// value. For numbers, it's a simple lesser-than test; for
+// strings it tests the number of characters whereas for maps
+// and slices it tests the number of items.
+func max(v interface{}, param string) error {
+	st := reflect.ValueOf(v)
+	var invalid bool
+	switch st.Kind() {
+	case reflect.String:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = int64(len(st.String())) > p
+	case reflect.Slice, reflect.Map, reflect.Array:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = int64(st.Len()) > p
+	case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+		p, err := asInt(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Int() > p
+	case reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uintptr:
+		p, err := asUint(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Uint() > p
+	case reflect.Float32, reflect.Float64:
+		p, err := asFloat(param)
+		if err != nil {
+			return ErrBadParameter
+		}
+		invalid = st.Float() > p
+	default:
+		return ErrUnsupported
+	}
+	if invalid {
+		return ErrMax
+	}
+	return nil
+}
+
+// regex is the builtin validation function that checks
+// whether the string variable matches a regular expression
+func regex(v interface{}, param string) error {
+	s, ok := v.(string)
+	if !ok {
+		return ErrUnsupported
+	}
+
+	re, err := regexp.Compile(param)
+	if err != nil {
+		return ErrBadParameter
+	}
+
+	if !re.MatchString(s) {
+		return ErrRegexp
+	}
+	return nil
+}
+
+// asInt retuns the parameter as a int64
+// or panics if it can't convert
+func asInt(param string) (int64, error) {
+	i, err := strconv.ParseInt(param, 0, 64)
+	if err != nil {
+		return 0, ErrBadParameter
+	}
+	return i, nil
+}
+
+// asUint retuns the parameter as a uint64
+// or panics if it can't convert
+func asUint(param string) (uint64, error) {
+	i, err := strconv.ParseUint(param, 0, 64)
+	if err != nil {
+		return 0, ErrBadParameter
+	}
+	return i, nil
+}
+
+// asFloat retuns the parameter as a float64
+// or panics if it can't convert
+func asFloat(param string) (float64, error) {
+	i, err := strconv.ParseFloat(param, 64)
+	if err != nil {
+		return 0.0, ErrBadParameter
+	}
+	return i, nil
+}

vendor/gopkg.in/validator.v2/doc.go

@@ -0,0 +1,265 @@
+// Package validator implements value validations
+//
+// Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+/*
+Package validator implements value validations based on struct tags.
+
+In code it is often necessary to validate that a given value is valid before
+using it for something. A typical example might be something like this.
+
+	if age < 18 {
+		return error.New("age cannot be under 18")
+	}
+
+This is a simple enough example, but it can get significantly more complex,
+especially when dealing with structs.
+
+	l := len(strings.Trim(s.Username))
+	if l < 3 || l > 40  || !regexp.MatchString("^[a-zA-Z]$", s.Username) ||	s.Age < 18 || s.Password {
+		return errors.New("Invalid request")
+	}
+
+You get the idea. Package validator allows one to define valid values as
+struct tags when defining a new struct type.
+
+	type NewUserRequest struct {
+		Username string `validate:"min=3,max=40,regexp=^[a-zA-Z]*$"`
+		Name string     `validate:"nonzero"`
+		Age int         `validate:"min=18"`
+		Password string `validate:"min=8"`
+	}
+
+Then validating a variable of type NewUserRequest becomes trivial.
+
+	nur := NewUserRequest{Username: "something", ...}
+	if errs := validator.Validate(nur); errs != nil {
+		// do something
+	}
+
+Builtin validator functions
+
+Here is the list of validator functions builtin in the package.
+
+	len
+		For numeric numbers, len will simply make sure that the value is
+		equal to the parameter given. For strings, it checks that
+		the string length is exactly that number of characters. For slices,
+		arrays, and maps, validates the number of items. (Usage: len=10)
+
+	max
+		For numeric numbers, max will simply make sure that the value is
+		lesser or equal to the parameter given. For strings, it checks that
+		the string length is at most that number of characters. For slices,
+		arrays, and maps, validates the number of items. (Usage: max=10)
+
+	min
+		For numeric numbers, min will simply make sure that the value is
+		greater or equal to the parameter given. For strings, it checks that
+		the string length is at least that number of characters. For slices,
+		arrays, and maps, validates the number of items. (Usage: min=10)
+
+	nonzero
+		This validates that the value is not zero. The appropriate zero value
+		is given by the Go spec (e.g. for int it's 0, for string it's "", for
+		pointers is nil, etc.) Usage: nonzero
+
+	regexp
+		Only valid for string types, it will validate that the value matches
+		the regular expression provided as parameter. (Usage: regexp=^a.*b$)
+
+
+Note that there are no tests to prevent conflicting validator parameters. For
+instance, these fields will never be valid.
+
+	...
+	A int     `validate:"max=0,min=1"`
+	B string  `validate:"len=10,regexp=^$"
+	...
+
+Custom validation functions
+
+It is possible to define custom validation functions by using SetValidationFunc.
+First, one needs to create a validation function.
+
+	// Very simple validation func
+	func notZZ(v interface{}, param string) error {
+		st := reflect.ValueOf(v)
+		if st.Kind() != reflect.String {
+			return validate.ErrUnsupported
+		}
+		if st.String() == "ZZ" {
+			return errors.New("value cannot be ZZ")
+		}
+		return nil
+	}
+
+Then one needs to add it to the list of validation funcs and give it a "tag" name.
+
+	validate.SetValidationFunc("notzz", notZZ)
+
+Then it is possible to use the notzz validation tag. This will print
+"Field A error: value cannot be ZZ"
+
+	type T struct {
+		A string  `validate:"nonzero,notzz"`
+	}
+	t := T{"ZZ"}
+	if errs := validator.Validate(t); errs != nil {
+		fmt.Printf("Field A error: %s\n", errs["A"][0])
+	}
+
+To use parameters, it is very similar.
+
+	// Very simple validator with parameter
+	func notSomething(v interface{}, param string) error {
+		st := reflect.ValueOf(v)
+		if st.Kind() != reflect.String {
+			return validate.ErrUnsupported
+		}
+		if st.String() == param {
+			return errors.New("value cannot be " + param)
+		}
+		return nil
+	}
+
+And then the code below should print "Field A error: value cannot be ABC".
+
+	validator.SetValidationFunc("notsomething", notSomething)
+	type T struct {
+		A string  `validate:"notsomething=ABC"`
+	}
+	t := T{"ABC"}
+	if errs := validator.Validate(t); errs != nil {
+		fmt.Printf("Field A error: %s\n", errs["A"][0])
+	}
+
+As well, it is possible to overwrite builtin validation functions.
+
+	validate.SetValidationFunc("min", myMinFunc)
+
+And you can delete a validation function by setting it to nil.
+
+	validate.SetValidationFunc("notzz", nil)
+	validate.SetValidationFunc("nonzero", nil)
+
+Using a non-existing validation func in a field tag will always return
+false and with error validate.ErrUnknownTag.
+
+Finally, package validator also provides a helper function that can be used
+to validate simple variables/values.
+
+    	// errs: nil
+	errs = validator.Valid(42, "min=10, max=50")
+
+	// errs: [validate.ErrZeroValue]
+	errs = validator.Valid(nil, "nonzero")
+
+	// errs: [validate.ErrMin,validate.ErrMax]
+	errs = validator.Valid("hi", "nonzero,min=3,max=2")
+
+Custom tag name
+
+In case there is a reason why one would not wish to use tag 'validate' (maybe due to
+a conflict with a different package), it is possible to tell the package to use
+a different tag.
+
+	validator.SetTag("valid")
+
+Then.
+
+	Type T struct {
+		A int    `valid:"min=8, max=10"`
+		B string `valid:"nonzero"`
+	}
+
+SetTag is permanent. The new tag name will be used until it is again changed
+with a new call to SetTag. A way to temporarily use a different tag exists.
+
+	validator.WithTag("foo").Validate(t)
+	validator.WithTag("bar").Validate(t)
+	// But this will go back to using 'validate'
+	validator.Validate(t)
+
+Multiple validators
+
+You may often need to have a different set of validation
+rules for different situations. In all the examples above,
+we only used the default validator but you could create a
+new one and set specific rules for it.
+
+For instance, you might use the same struct to decode incoming JSON for a REST API
+but your needs will change when you're using it to, say, create a new instance
+in storage vs. when you need to change something.
+
+	type User struct {
+		Username string `validate:"nonzero"`
+		Name string     `validate:"nonzero"`
+		Age int         `validate:"nonzero"`
+		Password string `validate:"nonzero"`
+	}
+
+Maybe when creating a new user, you need to make sure all values in the struct are filled,
+but then you use the same struct to handle incoming requests to, say, change the password,
+in which case you only need the Username and the Password and don't care for the others.
+You might use two different validators.
+
+	type User struct {
+		Username string `creating:"nonzero" chgpw:"nonzero"`
+		Name string     `creating:"nonzero"`
+		Age int         `creating:"nonzero"`
+		Password string `creating:"nonzero" chgpw:"nonzero"`
+	}
+
+	var (
+		creationValidator = validator.NewValidator()
+		chgPwValidator = validator.NewValidator()
+	)
+
+	func init() {
+		creationValidator.SetTag("creating")
+		chgPwValidator.SetTag("chgpw")
+	}
+
+	...
+
+	func CreateUserHandler(w http.ResponseWriter, r *http.Request) {
+		var u User
+		json.NewDecoder(r.Body).Decode(&user)
+		if errs := creationValidator.Validate(user); errs != nil {
+			// the request did not include all of the User
+			// struct fields, so send a http.StatusBadRequest
+			// back or something
+		}
+		// create the new user
+	}
+
+	func SetNewUserPasswordHandler(w http.ResponseWriter, r *http.Request) {
+		var u User
+		json.NewDecoder(r.Body).Decode(&user)
+		if errs := chgPwValidator.Validate(user); errs != nil {
+			// the request did not Username and Password,
+			// so send a http.StatusBadRequest
+			// back or something
+		}
+		// save the new password
+	}
+
+It is also possible to do all of that using only the default validator as long
+as SetTag is always called before calling validator.Validate() or you chain the
+with WithTag().
+
+*/
+package validator

vendor/gopkg.in/validator.v2/examplevalidate_test.go

@@ -0,0 +1,145 @@
+// Package validator implements value validations
+//
+// Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validator_test
+
+import (
+	"fmt"
+	"sort"
+
+	"gopkg.in/validator.v2"
+)
+
+// This example demonstrates a custom function to process template text.
+// It installs the strings.Title function and uses it to
+// Make Title Text Look Good In Our Template's Output.
+func ExampleValidate() {
+	// First create a struct to be validated
+	// according to the validator tags.
+	type ValidateExample struct {
+		Name        string `validate:"nonzero"`
+		Description string
+		Age         int    `validate:"min=18"`
+		Email       string `validate:"regexp=^[0-9a-z]+@[0-9a-z]+(\\.[0-9a-z]+)+$"`
+		Address     struct {
+			Street string `validate:"nonzero"`
+			City   string `validate:"nonzero"`
+		}
+	}
+
+	// Fill in some values
+	ve := ValidateExample{
+		Name:        "Joe Doe", // valid as it's nonzero
+		Description: "",        // valid no validation tag exists
+		Age:         17,        // invalid as age is less than required 18
+	}
+	// invalid as Email won't match the regular expression
+	ve.Email = "@not.a.valid.email"
+	ve.Address.City = "Some City" // valid
+	ve.Address.Street = ""        // invalid
+
+	err := validator.Validate(ve)
+	if err == nil {
+		fmt.Println("Values are valid.")
+	} else {
+		errs := err.(validator.ErrorMap)
+		// See if Address was empty
+		if errs["Address.Street"][0] == validator.ErrZeroValue {
+			fmt.Println("Street cannot be empty.")
+		}
+
+		// Iterate through the list of fields and respective errors
+		fmt.Println("Invalid due to fields:")
+
+		// Here we have to sort the arrays to ensure map ordering does not
+		// fail our example, typically it's ok to just range through the err
+		// list when order is not important.
+		var errOuts []string
+		for f, e := range errs {
+			errOuts = append(errOuts, fmt.Sprintf("\t - %s (%v)\n", f, e))
+		}
+
+		// Again this part is extraneous and you should not need this in real
+		// code.
+		sort.Strings(errOuts)
+		for _, str := range errOuts {
+			fmt.Print(str)
+		}
+	}
+
+	// Output:
+	// Street cannot be empty.
+	// Invalid due to fields:
+	//	 - Address.Street (zero value)
+	// 	 - Age (less than min)
+	// 	 - Email (regular expression mismatch)
+}
+
+// This example shows how to use the Valid helper
+// function to validator any number of values
+func ExampleValid() {
+	err := validator.Valid(42, "min=10,max=100,nonzero")
+	fmt.Printf("42: valid=%v, errs=%v\n", err == nil, err)
+
+	var ptr *int
+	if err := validator.Valid(ptr, "nonzero"); err != nil {
+		fmt.Println("ptr: Invalid nil pointer.")
+	}
+
+	err = validator.Valid("ABBA", "regexp=[ABC]*")
+	fmt.Printf("ABBA: valid=%v\n", err == nil)
+
+	// Output:
+	// 42: valid=true, errs=<nil>
+	// ptr: Invalid nil pointer.
+	// ABBA: valid=true
+}
+
+// This example shows you how to change the tag name
+func ExampleSetTag() {
+	type T struct {
+		A int `foo:"nonzero" bar:"min=10"`
+	}
+	t := T{5}
+	v := validator.NewValidator()
+	v.SetTag("foo")
+	err := v.Validate(t)
+	fmt.Printf("foo --> valid: %v, errs: %v\n", err == nil, err)
+	v.SetTag("bar")
+	err = v.Validate(t)
+	errs := err.(validator.ErrorMap)
+	fmt.Printf("bar --> valid: %v, errs: %v\n", err == nil, errs)
+
+	// Output:
+	// foo --> valid: true, errs: <nil>
+	// bar --> valid: false, errs: A: less than min
+}
+
+// This example shows you how to change the tag name
+func ExampleWithTag() {
+	type T struct {
+		A int `foo:"nonzero" bar:"min=10"`
+	}
+	t := T{5}
+	err := validator.WithTag("foo").Validate(t)
+	fmt.Printf("foo --> valid: %v, errs: %v\n", err == nil, err)
+	err = validator.WithTag("bar").Validate(t)
+	fmt.Printf("bar --> valid: %v, errs: %v\n", err == nil, err)
+
+	// Output:
+	// foo --> valid: true, errs: <nil>
+	// bar --> valid: false, errs: A: less than min
+}

vendor/gopkg.in/validator.v2/validator.go

@@ -0,0 +1,369 @@
+// Package validator implements value validations
+//
+// Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validator
+
+import (
+	"errors"
+	"fmt"
+	"reflect"
+	"regexp"
+	"strings"
+	"unicode"
+)
+
+// TextErr is an error that also implements the TextMarshaller interface for
+// serializing out to various plain text encodings. Packages creating their
+// own custom errors should use TextErr if they're intending to use serializing
+// formats like json, msgpack etc.
+type TextErr struct {
+	Err error
+}
+
+// Error implements the error interface.
+func (t TextErr) Error() string {
+	return t.Err.Error()
+}
+
+// MarshalText implements the TextMarshaller
+func (t TextErr) MarshalText() ([]byte, error) {
+	return []byte(t.Err.Error()), nil
+}
+
+var (
+	// ErrZeroValue is the error returned when variable has zero valud
+	// and nonzero was specified
+	ErrZeroValue = TextErr{errors.New("zero value")}
+	// ErrMin is the error returned when variable is less than mininum
+	// value specified
+	ErrMin = TextErr{errors.New("less than min")}
+	// ErrMax is the error returned when variable is more than
+	// maximum specified
+	ErrMax = TextErr{errors.New("greater than max")}
+	// ErrLen is the error returned when length is not equal to
+	// param specified
+	ErrLen = TextErr{errors.New("invalid length")}
+	// ErrRegexp is the error returned when the value does not
+	// match the provided regular expression parameter
+	ErrRegexp = TextErr{errors.New("regular expression mismatch")}
+	// ErrUnsupported is the error error returned when a validation rule
+	// is used with an unsupported variable type
+	ErrUnsupported = TextErr{errors.New("unsupported type")}
+	// ErrBadParameter is the error returned when an invalid parameter
+	// is provided to a validation rule (e.g. a string where an int was
+	// expected (max=foo,len=bar) or missing a parameter when one is required (len=))
+	ErrBadParameter = TextErr{errors.New("bad parameter")}
+	// ErrUnknownTag is the error returned when an unknown tag is found
+	ErrUnknownTag = TextErr{errors.New("unknown tag")}
+	// ErrInvalid is the error returned when variable is invalid
+	// (normally a nil pointer)
+	ErrInvalid = TextErr{errors.New("invalid value")}
+)
+
+// ErrorMap is a map which contains all errors from validating a struct.
+type ErrorMap map[string]ErrorArray
+
+// ErrorMap implements the Error interface so we can check error against nil.
+// The returned error is if existent the first error which was added to the map.
+func (err ErrorMap) Error() string {
+	for k, errs := range err {
+		if len(errs) > 0 {
+			return fmt.Sprintf("%s: %s", k, errs.Error())
+		}
+	}
+
+	return ""
+}
+
+// ErrorArray is a slice of errors returned by the Validate function.
+type ErrorArray []error
+
+// ErrorArray implements the Error interface and returns the first error as
+// string if existent.
+func (err ErrorArray) Error() string {
+	if len(err) > 0 {
+		return err[0].Error()
+	}
+	return ""
+}
+
+// ValidationFunc is a function that receives the value of a
+// field and a parameter used for the respective validation tag.
+type ValidationFunc func(v interface{}, param string) error
+
+// Validator implements a validator
+type Validator struct {
+	// Tag name being used.
+	tagName string
+	// validationFuncs is a map of ValidationFuncs indexed
+	// by their name.
+	validationFuncs map[string]ValidationFunc
+}
+
+// Helper validator so users can use the
+// functions directly from the package
+var defaultValidator = NewValidator()
+
+// NewValidator creates a new Validator
+func NewValidator() *Validator {
+	return &Validator{
+		tagName: "validate",
+		validationFuncs: map[string]ValidationFunc{
+			"nonzero": nonzero,
+			"len":     length,
+			"min":     min,
+			"max":     max,
+			"regexp":  regex,
+		},
+	}
+}
+
+// SetTag allows you to change the tag name used in structs
+func SetTag(tag string) {
+	defaultValidator.SetTag(tag)
+}
+
+// SetTag allows you to change the tag name used in structs
+func (mv *Validator) SetTag(tag string) {
+	mv.tagName = tag
+}
+
+// WithTag creates a new Validator with the new tag name. It is
+// useful to chain-call with Validate so we don't change the tag
+// name permanently: validator.WithTag("foo").Validate(t)
+func WithTag(tag string) *Validator {
+	return defaultValidator.WithTag(tag)
+}
+
+// WithTag creates a new Validator with the new tag name. It is
+// useful to chain-call with Validate so we don't change the tag
+// name permanently: validator.WithTag("foo").Validate(t)
+func (mv *Validator) WithTag(tag string) *Validator {
+	v := mv.copy()
+	v.SetTag(tag)
+	return v
+}
+
+// Copy a validator
+func (mv *Validator) copy() *Validator {
+	newFuncs := map[string]ValidationFunc{}
+	for k, f := range mv.validationFuncs {
+		newFuncs[k] = f
+	}
+	return &Validator{
+		tagName:         mv.tagName,
+		validationFuncs: newFuncs,
+	}
+}
+
+// SetValidationFunc sets the function to be used for a given
+// validation constraint. Calling this function with nil vf
+// is the same as removing the constraint function from the list.
+func SetValidationFunc(name string, vf ValidationFunc) error {
+	return defaultValidator.SetValidationFunc(name, vf)
+}
+
+// SetValidationFunc sets the function to be used for a given
+// validation constraint. Calling this function with nil vf
+// is the same as removing the constraint function from the list.
+func (mv *Validator) SetValidationFunc(name string, vf ValidationFunc) error {
+	if name == "" {
+		return errors.New("name cannot be empty")
+	}
+	if vf == nil {
+		delete(mv.validationFuncs, name)
+		return nil
+	}
+	mv.validationFuncs[name] = vf
+	return nil
+}
+
+// Validate validates the fields of a struct based
+// on 'validator' tags and returns errors found indexed
+// by the field name.
+func Validate(v interface{}) error {
+	return defaultValidator.Validate(v)
+}
+
+// Validate validates the fields of a struct based
+// on 'validator' tags and returns errors found indexed
+// by the field name.
+func (mv *Validator) Validate(v interface{}) error {
+	sv := reflect.ValueOf(v)
+	st := reflect.TypeOf(v)
+	if sv.Kind() == reflect.Ptr && !sv.IsNil() {
+		return mv.Validate(sv.Elem().Interface())
+	}
+	if sv.Kind() != reflect.Struct && sv.Kind() != reflect.Interface {
+		return ErrUnsupported
+	}
+
+	nfields := sv.NumField()
+	m := make(ErrorMap)
+	for i := 0; i < nfields; i++ {
+		fname := st.Field(i).Name
+		if !unicode.IsUpper(rune(fname[0])) {
+			continue
+		}
+
+		f := sv.Field(i)
+		// deal with pointers
+		for f.Kind() == reflect.Ptr && !f.IsNil() {
+			f = f.Elem()
+		}
+		tag := st.Field(i).Tag.Get(mv.tagName)
+		if tag == "-" {
+			continue
+		}
+		var errs ErrorArray
+
+		if tag != "" {
+			err := mv.Valid(f.Interface(), tag)
+			if errors, ok := err.(ErrorArray); ok {
+				errs = errors
+			} else {
+				if err != nil {
+					errs = ErrorArray{err}
+				}
+			}
+		}
+
+		mv.deepValidateCollection(f, fname, m) // no-op if field is not a struct, interface, array, slice or map
+
+		if len(errs) > 0 {
+			m[st.Field(i).Name] = errs
+		}
+	}
+
+	if len(m) > 0 {
+		return m
+	}
+	return nil
+}
+
+func (mv *Validator) deepValidateCollection(f reflect.Value, fname string, m ErrorMap) {
+	switch f.Kind() {
+	case reflect.Struct, reflect.Interface, reflect.Ptr:
+		e := mv.Validate(f.Interface())
+		if e, ok := e.(ErrorMap); ok && len(e) > 0 {
+			for j, k := range e {
+				m[fname+"."+j] = k
+			}
+		}
+	case reflect.Array, reflect.Slice:
+		for i := 0; i < f.Len(); i++ {
+			mv.deepValidateCollection(f.Index(i), fmt.Sprintf("%s[%d]", fname, i), m)
+		}
+	case reflect.Map:
+		for _, key := range f.MapKeys() {
+			mv.deepValidateCollection(key, fmt.Sprintf("%s[%+v](key)", fname, key.Interface()), m) // validate the map key
+			value := f.MapIndex(key)
+			mv.deepValidateCollection(value, fmt.Sprintf("%s[%+v](value)", fname, key.Interface()), m)
+		}
+	}
+}
+
+// Valid validates a value based on the provided
+// tags and returns errors found or nil.
+func Valid(val interface{}, tags string) error {
+	return defaultValidator.Valid(val, tags)
+}
+
+// Valid validates a value based on the provided
+// tags and returns errors found or nil.
+func (mv *Validator) Valid(val interface{}, tags string) error {
+	if tags == "-" {
+		return nil
+	}
+	v := reflect.ValueOf(val)
+	if v.Kind() == reflect.Ptr && !v.IsNil() {
+		return mv.Valid(v.Elem().Interface(), tags)
+	}
+	var err error
+	switch v.Kind() {
+	case reflect.Invalid:
+		err = mv.validateVar(nil, tags)
+	default:
+		err = mv.validateVar(val, tags)
+	}
+	return err
+}
+
+// validateVar validates one single variable
+func (mv *Validator) validateVar(v interface{}, tag string) error {
+	tags, err := mv.parseTags(tag)
+	if err != nil {
+		// unknown tag found, give up.
+		return err
+	}
+	errs := make(ErrorArray, 0, len(tags))
+	for _, t := range tags {
+		if err := t.Fn(v, t.Param); err != nil {
+			errs = append(errs, err)
+		}
+	}
+	if len(errs) > 0 {
+		return errs
+	}
+	return nil
+}
+
+// tag represents one of the tag items
+type tag struct {
+	Name  string         // name of the tag
+	Fn    ValidationFunc // validation function to call
+	Param string         // parameter to send to the validation function
+}
+
+// separate by no escaped commas
+var sepPattern *regexp.Regexp = regexp.MustCompile(`((?:^|[^\\])(?:\\\\)*),`)
+
+func splitUnescapedComma(str string) []string {
+	ret := []string{}
+	indexes := sepPattern.FindAllStringIndex(str, -1)
+	last := 0
+	for _, is := range indexes {
+		ret = append(ret, str[last:is[1]-1])
+		last = is[1]
+	}
+	ret = append(ret, str[last:])
+	return ret
+}
+
+// parseTags parses all individual tags found within a struct tag.
+func (mv *Validator) parseTags(t string) ([]tag, error) {
+	tl := splitUnescapedComma(t)
+	tags := make([]tag, 0, len(tl))
+	for _, i := range tl {
+		i = strings.Replace(i, `\,`, ",", -1)
+		tg := tag{}
+		v := strings.SplitN(i, "=", 2)
+		tg.Name = strings.Trim(v[0], " ")
+		if tg.Name == "" {
+			return []tag{}, ErrUnknownTag
+		}
+		if len(v) > 1 {
+			tg.Param = strings.Trim(v[1], " ")
+		}
+		var found bool
+		if tg.Fn, found = mv.validationFuncs[tg.Name]; !found {
+			return []tag{}, ErrUnknownTag
+		}
+		tags = append(tags, tg)
+
+	}
+	return tags, nil
+}

vendor/gopkg.in/validator.v2/validator_test.go

@@ -0,0 +1,517 @@
+// Package validator implements value validations
+//
+// Copyright 2014 Roberto Teixeira <robteix@robteix.com>
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package validator_test
+
+import (
+	"reflect"
+	"testing"
+
+	. "gopkg.in/check.v1"
+	"gopkg.in/validator.v2"
+)
+
+func Test(t *testing.T) {
+	TestingT(t)
+}
+
+type MySuite struct{}
+
+var _ = Suite(&MySuite{})
+
+type Simple struct {
+	A int `validate:"min=10"`
+}
+
+type I interface {
+	Foo() string
+}
+
+type Impl struct {
+	F string `validate:"len=3"`
+}
+
+func (this *Impl) Foo() string {
+	return this.F
+}
+
+type TestStruct struct {
+	A   int    `validate:"nonzero"`
+	B   string `validate:"len=8,min=6,max=4"`
+	Sub struct {
+		A int `validate:"nonzero"`
+		B string
+		C float64 `validate:"nonzero,min=1"`
+		D *string `validate:"nonzero"`
+	}
+	D *Simple `validate:"nonzero"`
+	E I       `validate:nonzero`
+}
+
+func (ms *MySuite) TestValidate(c *C) {
+	t := TestStruct{
+		A: 0,
+		B: "12345",
+	}
+	t.Sub.A = 1
+	t.Sub.B = ""
+	t.Sub.C = 0.0
+	t.D = &Simple{10}
+	t.E = &Impl{"hello"}
+
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["A"], HasError, validator.ErrZeroValue)
+	c.Assert(errs["B"], HasError, validator.ErrLen)
+	c.Assert(errs["B"], HasError, validator.ErrMin)
+	c.Assert(errs["B"], HasError, validator.ErrMax)
+	c.Assert(errs["Sub.A"], HasLen, 0)
+	c.Assert(errs["Sub.B"], HasLen, 0)
+	c.Assert(errs["Sub.C"], HasLen, 2)
+	c.Assert(errs["Sub.D"], HasError, validator.ErrZeroValue)
+	c.Assert(errs["E.F"], HasError, validator.ErrLen)
+}
+
+func (ms *MySuite) TestValidSlice(c *C) {
+	s := make([]int, 0, 10)
+	err := validator.Valid(s, "nonzero")
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrZeroValue)
+
+	for i := 0; i < 10; i++ {
+		s = append(s, i)
+	}
+
+	err = validator.Valid(s, "min=11,max=5,len=9,nonzero")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrMin)
+	c.Assert(errs, HasError, validator.ErrMax)
+	c.Assert(errs, HasError, validator.ErrLen)
+	c.Assert(errs, Not(HasError), validator.ErrZeroValue)
+}
+
+func (ms *MySuite) TestValidMap(c *C) {
+	m := make(map[string]string)
+	err := validator.Valid(m, "nonzero")
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrZeroValue)
+
+	err = validator.Valid(m, "min=1")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrMin)
+
+	m = map[string]string{"A": "a", "B": "a"}
+	err = validator.Valid(m, "max=1")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrMax)
+
+	err = validator.Valid(m, "min=2, max=5")
+	c.Assert(err, IsNil)
+
+	m = map[string]string{
+		"1": "a",
+		"2": "b",
+		"3": "c",
+		"4": "d",
+		"5": "e",
+	}
+	err = validator.Valid(m, "len=4,min=6,max=1,nonzero")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrLen)
+	c.Assert(errs, HasError, validator.ErrMin)
+	c.Assert(errs, HasError, validator.ErrMax)
+	c.Assert(errs, Not(HasError), validator.ErrZeroValue)
+
+}
+
+func (ms *MySuite) TestValidFloat(c *C) {
+	err := validator.Valid(12.34, "nonzero")
+	c.Assert(err, IsNil)
+
+	err = validator.Valid(0.0, "nonzero")
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrZeroValue)
+}
+
+func (ms *MySuite) TestValidInt(c *C) {
+	i := 123
+	err := validator.Valid(i, "nonzero")
+	c.Assert(err, IsNil)
+
+	err = validator.Valid(i, "min=1")
+	c.Assert(err, IsNil)
+
+	err = validator.Valid(i, "min=124, max=122")
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrMin)
+	c.Assert(errs, HasError, validator.ErrMax)
+
+	err = validator.Valid(i, "max=10")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrMax)
+}
+
+func (ms *MySuite) TestValidString(c *C) {
+	s := "test1234"
+	err := validator.Valid(s, "len=8")
+	c.Assert(err, IsNil)
+
+	err = validator.Valid(s, "len=0")
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasError, validator.ErrLen)
+
+	err = validator.Valid(s, "regexp=^[tes]{4}.*")
+	c.Assert(err, IsNil)
+
+	err = validator.Valid(s, "regexp=^.*[0-9]{5}$")
+	c.Assert(errs, NotNil)
+
+	err = validator.Valid("", "nonzero,len=3,max=1")
+	c.Assert(err, NotNil)
+	errs, ok = err.(validator.ErrorArray)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasLen, 2)
+	c.Assert(errs, HasError, validator.ErrZeroValue)
+	c.Assert(errs, HasError, validator.ErrLen)
+	c.Assert(errs, Not(HasError), validator.ErrMax)
+}
+
+func (ms *MySuite) TestValidateStructVar(c *C) {
+	// just verifies that a the given val is a struct
+	validator.SetValidationFunc("struct", func(val interface{}, _ string) error {
+		v := reflect.ValueOf(val)
+		if v.Kind() == reflect.Struct {
+			return nil
+		}
+		return validator.ErrUnsupported
+	})
+
+	type test struct {
+		A int
+	}
+	err := validator.Valid(test{}, "struct")
+	c.Assert(err, IsNil)
+
+	type test2 struct {
+		B int
+	}
+	type test1 struct {
+		A test2 `validate:"struct"`
+	}
+
+	err = validator.Validate(test1{})
+	c.Assert(err, IsNil)
+
+	type test4 struct {
+		B int `validate:"foo"`
+	}
+	type test3 struct {
+		A test4
+	}
+	err = validator.Validate(test3{})
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["A.B"], HasError, validator.ErrUnknownTag)
+}
+
+func (ms *MySuite) TestValidatePointerVar(c *C) {
+	// just verifies that a the given val is a struct
+	validator.SetValidationFunc("struct", func(val interface{}, _ string) error {
+		v := reflect.ValueOf(val)
+		if v.Kind() == reflect.Struct {
+			return nil
+		}
+		return validator.ErrUnsupported
+	})
+	validator.SetValidationFunc("nil", func(val interface{}, _ string) error {
+		v := reflect.ValueOf(val)
+		if v.IsNil() {
+			return nil
+		}
+		return validator.ErrUnsupported
+	})
+
+	type test struct {
+		A int
+	}
+	err := validator.Valid(&test{}, "struct")
+	c.Assert(err, IsNil)
+
+	type test2 struct {
+		B int
+	}
+	type test1 struct {
+		A *test2 `validate:"struct"`
+	}
+
+	err = validator.Validate(&test1{&test2{}})
+	c.Assert(err, IsNil)
+
+	type test4 struct {
+		B int `validate:"foo"`
+	}
+	type test3 struct {
+		A test4
+	}
+	err = validator.Validate(&test3{})
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["A.B"], HasError, validator.ErrUnknownTag)
+
+	err = validator.Valid((*test)(nil), "nil")
+	c.Assert(err, IsNil)
+
+	type test5 struct {
+		A *test2 `validate:"nil"`
+	}
+	err = validator.Validate(&test5{})
+	c.Assert(err, IsNil)
+
+	type test6 struct {
+		A *test2 `validate:"nonzero"`
+	}
+	err = validator.Validate(&test6{})
+	errs, ok = err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["A"], HasError, validator.ErrZeroValue)
+
+	err = validator.Validate(&test6{&test2{}})
+	c.Assert(err, IsNil)
+}
+
+func (ms *MySuite) TestValidateOmittedStructVar(c *C) {
+	type test2 struct {
+		B int `validate:"min=1"`
+	}
+	type test1 struct {
+		A test2 `validate:"-"`
+	}
+
+	t := test1{}
+	err := validator.Validate(t)
+	c.Assert(err, IsNil)
+
+	errs := validator.Valid(test2{}, "-")
+	c.Assert(errs, IsNil)
+}
+
+func (ms *MySuite) TestUnknownTag(c *C) {
+	type test struct {
+		A int `validate:"foo"`
+	}
+	t := test{}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasLen, 1)
+	c.Assert(errs["A"], HasError, validator.ErrUnknownTag)
+}
+
+func (ms *MySuite) TestValidateStructWithSlice(c *C) {
+	type test2 struct {
+		Num    int    `validate:"max=2"`
+		String string `validate:"nonzero"`
+	}
+
+	type test struct {
+		Slices []test2 `validate:"len=1"`
+	}
+
+	t := test{
+		Slices: []test2{{
+			Num:    6,
+			String: "foo",
+		}},
+	}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["Slices[0].Num"], HasError, validator.ErrMax)
+	c.Assert(errs["Slices[0].String"], IsNil) // sanity check
+}
+
+func (ms *MySuite) TestValidateStructWithNestedSlice(c *C) {
+	type test2 struct {
+		Num int `validate:"max=2"`
+	}
+
+	type test struct {
+		Slices [][]test2
+	}
+
+	t := test{
+		Slices: [][]test2{{{Num: 6}}},
+	}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["Slices[0][0].Num"], HasError, validator.ErrMax)
+}
+
+func (ms *MySuite) TestValidateStructWithMap(c *C) {
+	type test2 struct {
+		Num int `validate:"max=2"`
+	}
+
+	type test struct {
+		Map          map[string]test2
+		StructKeyMap map[test2]test2
+	}
+
+	t := test{
+		Map: map[string]test2{
+			"hello": {Num: 6},
+		},
+		StructKeyMap: map[test2]test2{
+			{Num: 3}: {Num: 1},
+		},
+	}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+
+	c.Assert(errs["Map[hello](value).Num"], HasError, validator.ErrMax)
+	c.Assert(errs["StructKeyMap[{Num:3}](key).Num"], HasError, validator.ErrMax)
+}
+
+func (ms *MySuite) TestUnsupported(c *C) {
+	type test struct {
+		A int     `validate:"regexp=a.*b"`
+		B float64 `validate:"regexp=.*"`
+	}
+	t := test{}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasLen, 2)
+	c.Assert(errs["A"], HasError, validator.ErrUnsupported)
+	c.Assert(errs["B"], HasError, validator.ErrUnsupported)
+}
+
+func (ms *MySuite) TestBadParameter(c *C) {
+	type test struct {
+		A string `validate:"min="`
+		B string `validate:"len=="`
+		C string `validate:"max=foo"`
+	}
+	t := test{}
+	err := validator.Validate(t)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasLen, 3)
+	c.Assert(errs["A"], HasError, validator.ErrBadParameter)
+	c.Assert(errs["B"], HasError, validator.ErrBadParameter)
+	c.Assert(errs["C"], HasError, validator.ErrBadParameter)
+}
+
+func (ms *MySuite) TestCopy(c *C) {
+	v := validator.NewValidator()
+	// WithTag calls copy, so we just copy the validator with the same tag
+	v2 := v.WithTag("validate")
+	// now we add a custom func only to the second one, it shouldn't get added
+	// to the first
+	v2.SetValidationFunc("custom", func(_ interface{}, _ string) error { return nil })
+	type test struct {
+		A string `validate:"custom"`
+	}
+	err := v2.Validate(test{})
+	c.Assert(err, IsNil)
+
+	err = v.Validate(test{})
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs, HasLen, 1)
+	c.Assert(errs["A"], HasError, validator.ErrUnknownTag)
+}
+
+func (ms *MySuite) TestTagEscape(c *C) {
+	type test struct {
+		A string `validate:"min=0,regexp=^a{3\\,10}"`
+	}
+	t := test{"aaaa"}
+	err := validator.Validate(t)
+	c.Assert(err, IsNil)
+
+	t2 := test{"aa"}
+	err = validator.Validate(t2)
+	c.Assert(err, NotNil)
+	errs, ok := err.(validator.ErrorMap)
+	c.Assert(ok, Equals, true)
+	c.Assert(errs["A"], HasError, validator.ErrRegexp)
+}
+
+type hasErrorChecker struct {
+	*CheckerInfo
+}
+
+func (c *hasErrorChecker) Check(params []interface{}, names []string) (bool, string) {
+	var (
+		ok    bool
+		slice []error
+		value error
+	)
+	slice, ok = params[0].(validator.ErrorArray)
+	if !ok {
+		return false, "First parameter is not an Errorarray"
+	}
+	value, ok = params[1].(error)
+	if !ok {
+		return false, "Second parameter is not an error"
+	}
+
+	for _, v := range slice {
+		if v == value {
+			return true, ""
+		}
+	}
+	return false, ""
+}
+
+func (c *hasErrorChecker) Info() *CheckerInfo {
+	return c.CheckerInfo
+}
+
+var HasError = &hasErrorChecker{&CheckerInfo{Name: "HasError", Params: []string{"HasError", "expected to contain"}}}

vendor/gopkg.in/yaml.v2/LICENSE

@@ -1,13 +1,201 @@
-Copyright 2011-2016 Canonical Ltd.
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
 
-Licensed under the Apache License, Version 2.0 (the "License");
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
-you may not use this file except in compliance with the License.
+
-You may obtain a copy of the License at
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
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+
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+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
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+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
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+      "Contribution" shall mean any work of authorship, including
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+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
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+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
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+      (except as stated in this section) patent license to make, have made,
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+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
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+   4. Redistribution. You may reproduce and distribute copies of the
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+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
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+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
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+          include a readable copy of the attribution notices contained
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+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "{}"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright {yyyy} {name of copyright owner}
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
 
        http://www.apache.org/licenses/LICENSE-2.0
 
-Unless required by applicable law or agreed to in writing, software
+   Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
+   distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
+   See the License for the specific language governing permissions and
-limitations under the License.
+   limitations under the License.

vendor/gopkg.in/yaml.v2/README.md

@@ -48,6 +48,8 @@ The yaml package is licensed under the Apache License 2.0. Please see the LICENS
 Example
 -------
 
+Some more examples can be found in the "examples" folder.
+
 ```Go
 package main
 

vendor/gopkg.in/yaml.v2/decode.go

@@ -120,7 +120,6 @@ func (p *parser) parse() *node {
 	default:
 		panic("attempted to parse unknown event: " + strconv.Itoa(int(p.event.typ)))
 	}
-	panic("unreachable")
 }
 
 func (p *parser) node(kind int) *node {
@@ -191,6 +190,7 @@ type decoder struct {
 	aliases map[string]bool
 	mapType reflect.Type
 	terrors []string
+	strict  bool
 }
 
 var (
@@ -200,8 +200,8 @@ var (
 	ifaceType      = defaultMapType.Elem()
 )
 
-func newDecoder() *decoder {
+func newDecoder(strict bool) *decoder {
-	d := &decoder{mapType: defaultMapType}
+	d := &decoder{mapType: defaultMapType, strict: strict}
 	d.aliases = make(map[string]bool)
 	return d
 }
@@ -251,7 +251,7 @@ func (d *decoder) callUnmarshaler(n *node, u Unmarshaler) (good bool) {
 //
 // If n holds a null value, prepare returns before doing anything.
 func (d *decoder) prepare(n *node, out reflect.Value) (newout reflect.Value, unmarshaled, good bool) {
-	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "") {
+	if n.tag == yaml_NULL_TAG || n.kind == scalarNode && n.tag == "" && (n.value == "null" || n.value == "" && n.implicit) {
 		return out, false, false
 	}
 	again := true
@@ -640,6 +640,8 @@ func (d *decoder) mappingStruct(n *node, out reflect.Value) (good bool) {
 			value := reflect.New(elemType).Elem()
 			d.unmarshal(n.children[i+1], value)
 			inlineMap.SetMapIndex(name, value)
+		} else if d.strict {
+			d.terrors = append(d.terrors, fmt.Sprintf("line %d: field %s not found in struct %s", n.line+1, name.String(), out.Type()))
 		}
 	}
 	return true

vendor/gopkg.in/yaml.v2/decode_test.go

@@ -405,6 +405,12 @@ var unmarshalTests = []struct {
 		map[string]interface{}{"v": 1},
 	},
 
+	// Non-specific tag (Issue #75)
+	{
+		"v: ! test",
+		map[string]interface{}{"v": "test"},
+	},
+
 	// Anchors and aliases.
 	{
 		"a: &x 1\nb: &y 2\nc: *x\nd: *y\n",
@@ -551,7 +557,7 @@ var unmarshalTests = []struct {
 	},
 	{
 		"a: 2015-02-24T18:19:39Z\n",
-		map[string]time.Time{"a": time.Unix(1424801979, 0)},
+		map[string]time.Time{"a": time.Unix(1424801979, 0).In(time.UTC)},
 	},
 
 	// Encode empty lists as zero-length slices.
@@ -581,6 +587,15 @@ var unmarshalTests = []struct {
 		"\xfe\xff\x00\xf1\x00o\x00\xf1\x00o\x00:\x00 \x00v\x00e\x00r\x00y\x00 \x00y\x00e\x00s\x00 \xd8=\xdf\xd4\x00\n",
 		M{"ñoño": "very yes 🟔"},
 	},
+
+	// YAML Float regex shouldn't match this
+	{
+		"a: 123456e1\n",
+		M{"a": "123456e1"},
+	}, {
+		"a: 123456E1\n",
+		M{"a": "123456E1"},
+	},
 }
 
 type M map[interface{}]interface{}
@@ -595,7 +610,8 @@ type inlineC struct {
 }
 
 func (s *S) TestUnmarshal(c *C) {
-	for _, item := range unmarshalTests {
+	for i, item := range unmarshalTests {
+		c.Logf("test %d: %q", i, item.data)
 		t := reflect.ValueOf(item.value).Type()
 		var value interface{}
 		switch t.Kind() {
@@ -639,6 +655,7 @@ var unmarshalErrorTests = []struct {
 	{"a: !!binary ==", "yaml: !!binary value contains invalid base64 data"},
 	{"{[.]}", `yaml: invalid map key: \[\]interface \{\}\{"\."\}`},
 	{"{{.}}", `yaml: invalid map key: map\[interface\ \{\}\]interface \{\}\{".":interface \{\}\(nil\)\}`},
+	{"%TAG !%79! tag:yaml.org,2002:\n---\nv: !%79!int '1'", "yaml: did not find expected whitespace"},
 }
 
 func (s *S) TestUnmarshalErrors(c *C) {
@@ -660,6 +677,7 @@ var unmarshalerTests = []struct {
 	{`_: BAR!`, "!!str", "BAR!"},
 	{`_: "BAR!"`, "!!str", "BAR!"},
 	{"_: !!foo 'BAR!'", "!!foo", "BAR!"},
+	{`_: ""`, "!!str", ""},
 }
 
 var unmarshalerResult = map[int]error{}
@@ -958,6 +976,17 @@ func (s *S) TestUnmarshalSliceOnPreset(c *C) {
 	c.Assert(v.A, DeepEquals, []int{2})
 }
 
+func (s *S) TestUnmarshalStrict(c *C) {
+	v := struct{ A, B int }{}
+
+	err := yaml.UnmarshalStrict([]byte("a: 1\nb: 2"), &v)
+	c.Check(err, IsNil)
+	err = yaml.Unmarshal([]byte("a: 1\nb: 2\nc: 3"), &v)
+	c.Check(err, IsNil)
+	err = yaml.UnmarshalStrict([]byte("a: 1\nb: 2\nc: 3"), &v)
+	c.Check(err, ErrorMatches, "yaml: unmarshal errors:\n  line 1: field c not found in struct struct { A int; B int }")
+}
+
 //var data []byte
 //func init() {
 //	var err error

vendor/gopkg.in/yaml.v2/emitterc.go

@@ -666,7 +666,6 @@ func yaml_emitter_emit_node(emitter *yaml_emitter_t, event *yaml_event_t,
 		return yaml_emitter_set_emitter_error(emitter,
 			"expected SCALAR, SEQUENCE-START, MAPPING-START, or ALIAS")
 	}
-	return false
 }
 
 // Expect ALIAS.
@@ -995,7 +994,7 @@ func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
 		break_space    = false
 		space_break    = false
 
-		preceeded_by_whitespace = false
+		preceded_by_whitespace = false
 		followed_by_whitespace  = false
 		previous_space          = false
 		previous_break          = false
@@ -1017,7 +1016,7 @@ func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
 		flow_indicators = true
 	}
 
-	preceeded_by_whitespace = true
+	preceded_by_whitespace = true
 	for i, w := 0, 0; i < len(value); i += w {
 		w = width(value[i])
 		followed_by_whitespace = i+w >= len(value) || is_blank(value, i+w)
@@ -1048,7 +1047,7 @@ func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
 					block_indicators = true
 				}
 			case '#':
-				if preceeded_by_whitespace {
+				if preceded_by_whitespace {
 					flow_indicators = true
 					block_indicators = true
 				}
@@ -1089,7 +1088,7 @@ func yaml_emitter_analyze_scalar(emitter *yaml_emitter_t, value []byte) bool {
 		}
 
 		// [Go]: Why 'z'? Couldn't be the end of the string as that's the loop condition.
-		preceeded_by_whitespace = is_blankz(value, i)
+		preceded_by_whitespace = is_blankz(value, i)
 	}
 
 	emitter.scalar_data.multiline = line_breaks

vendor/gopkg.in/yaml.v2/example_embedded_test.go

@@ -0,0 +1,41 @@
+package yaml_test
+
+import (
+	"fmt"
+	"log"
+
+        "gopkg.in/yaml.v2"
+)
+
+// An example showing how to unmarshal embedded
+// structs from YAML.
+
+type StructA struct {
+	A string `yaml:"a"`
+}
+
+type StructB struct {
+	// Embedded structs are not treated as embedded in YAML by default. To do that,
+	// add the ",inline" annotation below
+	StructA   `yaml:",inline"`
+	B string `yaml:"b"`
+}
+
+var data = `
+a: a string from struct A
+b: a string from struct B
+`
+
+func ExampleUnmarshal_embedded() {
+	var b StructB
+
+	err := yaml.Unmarshal([]byte(data), &b)
+	if err != nil {
+		log.Fatal("cannot unmarshal data: %v", err)
+	}
+        fmt.Println(b.A)
+        fmt.Println(b.B)
+        // Output:
+        // a string from struct A
+        // a string from struct B
+}

vendor/gopkg.in/yaml.v2/parserc.go

@@ -166,7 +166,6 @@ func yaml_parser_state_machine(parser *yaml_parser_t, event *yaml_event_t) bool
 	default:
 		panic("invalid parser state")
 	}
-	return false
 }
 
 // Parse the production:

vendor/gopkg.in/yaml.v2/resolve.go

@@ -3,6 +3,7 @@ package yaml
 import (
 	"encoding/base64"
 	"math"
+	"regexp"
 	"strconv"
 	"strings"
 	"unicode/utf8"
@@ -80,6 +81,8 @@ func resolvableTag(tag string) bool {
 	return false
 }
 
+var yamlStyleFloat = regexp.MustCompile(`^[-+]?[0-9]*\.?[0-9]+([eE][-+][0-9]+)?$`)
+
 func resolve(tag string, in string) (rtag string, out interface{}) {
 	if !resolvableTag(tag) {
 		return tag, in
@@ -135,10 +138,12 @@ func resolve(tag string, in string) (rtag string, out interface{}) {
 			if err == nil {
 				return yaml_INT_TAG, uintv
 			}
+			if yamlStyleFloat.MatchString(plain) {
 				floatv, err := strconv.ParseFloat(plain, 64)
 				if err == nil {
 					return yaml_FLOAT_TAG, floatv
 				}
+			}
 			if strings.HasPrefix(plain, "0b") {
 				intv, err := strconv.ParseInt(plain[2:], 2, 64)
 				if err == nil {

vendor/gopkg.in/yaml.v2/scannerc.go

@@ -9,7 +9,7 @@ import (
 // ************
 //
 // The following notes assume that you are familiar with the YAML specification
-// (http://yaml.org/spec/cvs/current.html).  We mostly follow it, although in
+// (http://yaml.org/spec/1.2/spec.html).  We mostly follow it, although in
 // some cases we are less restrictive that it requires.
 //
 // The process of transforming a YAML stream into a sequence of events is
@@ -611,7 +611,7 @@ func yaml_parser_set_scanner_tag_error(parser *yaml_parser_t, directive bool, co
 	if directive {
 		context = "while parsing a %TAG directive"
 	}
-	return yaml_parser_set_scanner_error(parser, context, context_mark, "did not find URI escaped octet")
+	return yaml_parser_set_scanner_error(parser, context, context_mark, problem)
 }
 
 func trace(args ...interface{}) func() {
@@ -1944,7 +1944,7 @@ func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_ma
 	} else {
 		// It's either the '!' tag or not really a tag handle.  If it's a %TAG
 		// directive, it's an error.  If it's a tag token, it must be a part of URI.
-		if directive && !(s[0] == '!' && s[1] == 0) {
+		if directive && string(s) != "!" {
 			yaml_parser_set_scanner_tag_error(parser, directive,
 				start_mark, "did not find expected '!'")
 			return false
@@ -1959,6 +1959,7 @@ func yaml_parser_scan_tag_handle(parser *yaml_parser_t, directive bool, start_ma
 func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte, start_mark yaml_mark_t, uri *[]byte) bool {
 	//size_t length = head ? strlen((char *)head) : 0
 	var s []byte
+	hasTag := len(head) > 0
 
 	// Copy the head if needed.
 	//
@@ -2000,10 +2001,10 @@ func yaml_parser_scan_tag_uri(parser *yaml_parser_t, directive bool, head []byte
 		if parser.unread < 1 && !yaml_parser_update_buffer(parser, 1) {
 			return false
 		}
+		hasTag = true
 	}
 
-	// Check if the tag is non-empty.
+	if !hasTag {
-	if len(s) == 0 {
 		yaml_parser_set_scanner_tag_error(parser, directive,
 			start_mark, "did not find expected tag URI")
 		return false

vendor/gopkg.in/yaml.v2/yaml.go

@@ -77,8 +77,19 @@ type Marshaler interface {
 // supported tag options.
 //
 func Unmarshal(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, false)
+}
+
+// UnmarshalStrict is like Unmarshal except that any fields that are found
+// in the data that do not have corresponding struct members will result in
+// an error.
+func UnmarshalStrict(in []byte, out interface{}) (err error) {
+	return unmarshal(in, out, true)
+}
+
+func unmarshal(in []byte, out interface{}, strict bool) (err error) {
 	defer handleErr(&err)
-	d := newDecoder()
+	d := newDecoder(strict)
 	p := newParser(in)
 	defer p.destroy()
 	node := p.parse()

vendor/gopkg.in/yaml.v2/yamlh.go

@@ -508,7 +508,7 @@ type yaml_parser_t struct {
 
 	problem string // Error description.
 
-	// The byte about which the problem occured.
+	// The byte about which the problem occurred.
 	problem_offset int
 	problem_value  int
 	problem_mark   yaml_mark_t