19 files changed, 435 insertions, 955 deletions

diff --git a/vendor/github.com/victorhaggqvist/pflag/LICENSE b/vendor/github.com/spf13/pflag/LICENSE
index 63ed1cf..63ed1cf 100644
--- a/vendor/github.com/victorhaggqvist/pflag/LICENSE
+++ b/vendor/github.com/spf13/pflag/LICENSE
diff --git a/vendor/github.com/victorhaggqvist/pflag/bool.go b/vendor/github.com/spf13/pflag/bool.go
index 617971a..c4c5c0b 100644
--- a/vendor/github.com/victorhaggqvist/pflag/bool.go
+++ b/vendor/github.com/spf13/pflag/bool.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // optional interface to indicate boolean flags that can be
 // supplied without "=value" text
@@ -26,41 +23,58 @@ func (b *boolValue) Set(s string) error {
 	return err
 }
 
-func (b *boolValue) String() string { return fmt.Sprintf("%v", *b) }
+func (b *boolValue) Type() string {
+	return "bool"
+}
+
+func (b *boolValue) String() string { return strconv.FormatBool(bool(*b)) }
 
 func (b *boolValue) IsBoolFlag() bool { return true }
 
+func boolConv(sval string) (interface{}, error) {
+	return strconv.ParseBool(sval)
+}
+
+// GetBool return the bool value of a flag with the given name
+func (f *FlagSet) GetBool(name string) (bool, error) {
+	val, err := f.getFlagType(name, "bool", boolConv)
+	if err != nil {
+		return false, err
+	}
+	return val.(bool), nil
+}
+
 // BoolVar 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 (f *FlagSet) BoolVar(p *bool, name string, value bool, usage string) {
-	f.VarP(newBoolValue(value, p), name, "", usage)
+	f.BoolVarP(p, name, "", value, usage)
 }
 
-// Like BoolVar, but accepts a shorthand letter that can be used after a single dash.
+// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
-	f.VarP(newBoolValue(value, p), name, shorthand, usage)
+	flag := f.VarPF(newBoolValue(value, p), name, shorthand, usage)
+	flag.NoOptDefVal = "true"
 }
 
 // BoolVar 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 BoolVar(p *bool, name string, value bool, usage string) {
-	CommandLine.VarP(newBoolValue(value, p), name, "", usage)
+	BoolVarP(p, name, "", value, usage)
 }
 
-// Like BoolVar, but accepts a shorthand letter that can be used after a single dash.
+// BoolVarP is like BoolVar, but accepts a shorthand letter that can be used after a single dash.
 func BoolVarP(p *bool, name, shorthand string, value bool, usage string) {
-	CommandLine.VarP(newBoolValue(value, p), name, shorthand, usage)
+	flag := CommandLine.VarPF(newBoolValue(value, p), name, shorthand, usage)
+	flag.NoOptDefVal = "true"
 }
 
 // Bool 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) Bool(name string, value bool, usage string) *bool {
-	p := new(bool)
-	f.BoolVarP(p, name, "", value, usage)
-	return p
+	return f.BoolP(name, "", value, usage)
 }
 
-// Like Bool, but accepts a shorthand letter that can be used after a single dash.
+// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool {
 	p := new(bool)
 	f.BoolVarP(p, name, shorthand, value, usage)
@@ -70,10 +84,11 @@ func (f *FlagSet) BoolP(name, shorthand string, value bool, usage string) *bool
 // Bool 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 Bool(name string, value bool, usage string) *bool {
-	return CommandLine.BoolP(name, "", value, usage)
+	return BoolP(name, "", value, usage)
 }
 
-// Like Bool, but accepts a shorthand letter that can be used after a single dash.
+// BoolP is like Bool, but accepts a shorthand letter that can be used after a single dash.
 func BoolP(name, shorthand string, value bool, usage string) *bool {
-	return CommandLine.BoolP(name, shorthand, value, usage)
+	b := CommandLine.BoolP(name, shorthand, value, usage)
+	return b
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/duration.go b/vendor/github.com/spf13/pflag/duration.go
index db59463..e9debef 100644
--- a/vendor/github.com/victorhaggqvist/pflag/duration.go
+++ b/vendor/github.com/spf13/pflag/duration.go
@@ -1,6 +1,8 @@
 package pflag
 
-import "time"
+import (
+	"time"
+)
 
 // -- time.Duration Value
 type durationValue time.Duration
@@ -16,13 +18,23 @@ func (d *durationValue) Set(s string) error {
 	return err
 }
 
+func (d *durationValue) Type() string {
+	return "duration"
+}
+
 func (d *durationValue) String() string { return (*time.Duration)(d).String() }
 
-// Value is the interface to the dynamic value stored in a flag.
-// (The default value is represented as a string.)
-type Value interface {
-	String() string
-	Set(string) error
+func durationConv(sval string) (interface{}, error) {
+	return time.ParseDuration(sval)
+}
+
+// GetDuration return the duration value of a flag with the given name
+func (f *FlagSet) GetDuration(name string) (time.Duration, error) {
+	val, err := f.getFlagType(name, "duration", durationConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(time.Duration), nil
 }
 
 // DurationVar defines a time.Duration flag with specified name, default value, and usage string.
@@ -31,7 +43,7 @@ func (f *FlagSet) DurationVar(p *time.Duration, name string, value time.Duration
 	f.VarP(newDurationValue(value, p), name, "", usage)
 }
 
-// Like DurationVar, but accepts a shorthand letter that can be used after a single dash.
+// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
 	f.VarP(newDurationValue(value, p), name, shorthand, usage)
 }
@@ -42,7 +54,7 @@ func DurationVar(p *time.Duration, name string, value time.Duration, usage strin
 	CommandLine.VarP(newDurationValue(value, p), name, "", usage)
 }
 
-// Like DurationVar, but accepts a shorthand letter that can be used after a single dash.
+// DurationVarP is like DurationVar, but accepts a shorthand letter that can be used after a single dash.
 func DurationVarP(p *time.Duration, name, shorthand string, value time.Duration, usage string) {
 	CommandLine.VarP(newDurationValue(value, p), name, shorthand, usage)
 }
@@ -55,7 +67,7 @@ func (f *FlagSet) Duration(name string, value time.Duration, usage string) *time
 	return p
 }
 
-// Like Duration, but accepts a shorthand letter that can be used after a single dash.
+// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
 	p := new(time.Duration)
 	f.DurationVarP(p, name, shorthand, value, usage)
@@ -68,7 +80,7 @@ func Duration(name string, value time.Duration, usage string) *time.Duration {
 	return CommandLine.DurationP(name, "", value, usage)
 }
 
-// Like Duration, but accepts a shorthand letter that can be used after a single dash.
+// DurationP is like Duration, but accepts a shorthand letter that can be used after a single dash.
 func DurationP(name, shorthand string, value time.Duration, usage string) *time.Duration {
 	return CommandLine.DurationP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/float32.go b/vendor/github.com/spf13/pflag/float32.go
index a0041e2..a243f81 100644
--- a/vendor/github.com/victorhaggqvist/pflag/float32.go
+++ b/vendor/github.com/spf13/pflag/float32.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- float32 Value
 type float32Value float32
@@ -19,7 +16,28 @@ func (f *float32Value) Set(s string) error {
 	return err
 }
 
-func (f *float32Value) String() string { return fmt.Sprintf("%v", *f) }
+func (f *float32Value) Type() string {
+	return "float32"
+}
+
+func (f *float32Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 32) }
+
+func float32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseFloat(sval, 32)
+	if err != nil {
+		return 0, err
+	}
+	return float32(v), nil
+}
+
+// GetFloat32 return the float32 value of a flag with the given name
+func (f *FlagSet) GetFloat32(name string) (float32, error) {
+	val, err := f.getFlagType(name, "float32", float32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(float32), nil
+}
 
 // Float32Var defines a float32 flag with specified name, default value, and usage string.
 // The argument p points to a float32 variable in which to store the value of the flag.
@@ -27,7 +45,7 @@ func (f *FlagSet) Float32Var(p *float32, name string, value float32, usage strin
 	f.VarP(newFloat32Value(value, p), name, "", usage)
 }
 
-// Like Float32Var, but accepts a shorthand letter that can be used after a single dash.
+// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
 	f.VarP(newFloat32Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func Float32Var(p *float32, name string, value float32, usage string) {
 	CommandLine.VarP(newFloat32Value(value, p), name, "", usage)
 }
 
-// Like Float32Var, but accepts a shorthand letter that can be used after a single dash.
+// Float32VarP is like Float32Var, but accepts a shorthand letter that can be used after a single dash.
 func Float32VarP(p *float32, name, shorthand string, value float32, usage string) {
 	CommandLine.VarP(newFloat32Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Float32(name string, value float32, usage string) *float32 {
 	return p
 }
 
-// Like Float32, but accepts a shorthand letter that can be used after a single dash.
+// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Float32P(name, shorthand string, value float32, usage string) *float32 {
 	p := new(float32)
 	f.Float32VarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Float32(name string, value float32, usage string) *float32 {
 	return CommandLine.Float32P(name, "", value, usage)
 }
 
-// Like Float32, but accepts a shorthand letter that can be used after a single dash.
+// Float32P is like Float32, but accepts a shorthand letter that can be used after a single dash.
 func Float32P(name, shorthand string, value float32, usage string) *float32 {
 	return CommandLine.Float32P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/float64.go b/vendor/github.com/spf13/pflag/float64.go
index 8d79be0..04b5492 100644
--- a/vendor/github.com/victorhaggqvist/pflag/float64.go
+++ b/vendor/github.com/spf13/pflag/float64.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- float64 Value
 type float64Value float64
@@ -19,7 +16,24 @@ func (f *float64Value) Set(s string) error {
 	return err
 }
 
-func (f *float64Value) String() string { return fmt.Sprintf("%v", *f) }
+func (f *float64Value) Type() string {
+	return "float64"
+}
+
+func (f *float64Value) String() string { return strconv.FormatFloat(float64(*f), 'g', -1, 64) }
+
+func float64Conv(sval string) (interface{}, error) {
+	return strconv.ParseFloat(sval, 64)
+}
+
+// GetFloat64 return the float64 value of a flag with the given name
+func (f *FlagSet) GetFloat64(name string) (float64, error) {
+	val, err := f.getFlagType(name, "float64", float64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(float64), nil
+}
 
 // Float64Var defines a float64 flag with specified name, default value, and usage string.
 // The argument p points to a float64 variable in which to store the value of the flag.
@@ -27,7 +41,7 @@ func (f *FlagSet) Float64Var(p *float64, name string, value float64, usage strin
 	f.VarP(newFloat64Value(value, p), name, "", usage)
 }
 
-// Like Float64Var, but accepts a shorthand letter that can be used after a single dash.
+// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
 	f.VarP(newFloat64Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +52,7 @@ func Float64Var(p *float64, name string, value float64, usage string) {
 	CommandLine.VarP(newFloat64Value(value, p), name, "", usage)
 }
 
-// Like Float64Var, but accepts a shorthand letter that can be used after a single dash.
+// Float64VarP is like Float64Var, but accepts a shorthand letter that can be used after a single dash.
 func Float64VarP(p *float64, name, shorthand string, value float64, usage string) {
 	CommandLine.VarP(newFloat64Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +65,7 @@ func (f *FlagSet) Float64(name string, value float64, usage string) *float64 {
 	return p
 }
 
-// Like Float64, but accepts a shorthand letter that can be used after a single dash.
+// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Float64P(name, shorthand string, value float64, usage string) *float64 {
 	p := new(float64)
 	f.Float64VarP(p, name, shorthand, value, usage)
@@ -64,7 +78,7 @@ func Float64(name string, value float64, usage string) *float64 {
 	return CommandLine.Float64P(name, "", value, usage)
 }
 
-// Like Float64, but accepts a shorthand letter that can be used after a single dash.
+// Float64P is like Float64, but accepts a shorthand letter that can be used after a single dash.
 func Float64P(name, shorthand string, value float64, usage string) *float64 {
 	return CommandLine.Float64P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/int.go b/vendor/github.com/spf13/pflag/int.go
index cb85e14..1474b89 100644
--- a/vendor/github.com/victorhaggqvist/pflag/int.go
+++ b/vendor/github.com/spf13/pflag/int.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- int Value
 type intValue int
@@ -19,7 +16,24 @@ func (i *intValue) Set(s string) error {
 	return err
 }
 
-func (i *intValue) String() string { return fmt.Sprintf("%v", *i) }
+func (i *intValue) Type() string {
+	return "int"
+}
+
+func (i *intValue) String() string { return strconv.Itoa(int(*i)) }
+
+func intConv(sval string) (interface{}, error) {
+	return strconv.Atoi(sval)
+}
+
+// GetInt return the int value of a flag with the given name
+func (f *FlagSet) GetInt(name string) (int, error) {
+	val, err := f.getFlagType(name, "int", intConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int), nil
+}
 
 // IntVar defines an int flag with specified name, default value, and usage string.
 // The argument p points to an int variable in which to store the value of the flag.
@@ -27,7 +41,7 @@ func (f *FlagSet) IntVar(p *int, name string, value int, usage string) {
 	f.VarP(newIntValue(value, p), name, "", usage)
 }
 
-// Like IntVar, but accepts a shorthand letter that can be used after a single dash.
+// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IntVarP(p *int, name, shorthand string, value int, usage string) {
 	f.VarP(newIntValue(value, p), name, shorthand, usage)
 }
@@ -38,7 +52,7 @@ func IntVar(p *int, name string, value int, usage string) {
 	CommandLine.VarP(newIntValue(value, p), name, "", usage)
 }
 
-// Like IntVar, but accepts a shorthand letter that can be used after a single dash.
+// IntVarP is like IntVar, but accepts a shorthand letter that can be used after a single dash.
 func IntVarP(p *int, name, shorthand string, value int, usage string) {
 	CommandLine.VarP(newIntValue(value, p), name, shorthand, usage)
 }
@@ -51,7 +65,7 @@ func (f *FlagSet) Int(name string, value int, usage string) *int {
 	return p
 }
 
-// Like Int, but accepts a shorthand letter that can be used after a single dash.
+// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IntP(name, shorthand string, value int, usage string) *int {
 	p := new(int)
 	f.IntVarP(p, name, shorthand, value, usage)
@@ -64,7 +78,7 @@ func Int(name string, value int, usage string) *int {
 	return CommandLine.IntP(name, "", value, usage)
 }
 
-// Like Int, but accepts a shorthand letter that can be used after a single dash.
+// IntP is like Int, but accepts a shorthand letter that can be used after a single dash.
 func IntP(name, shorthand string, value int, usage string) *int {
 	return CommandLine.IntP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/int32.go b/vendor/github.com/spf13/pflag/int32.go
index 2e1a317..9b95944 100644
--- a/vendor/github.com/victorhaggqvist/pflag/int32.go
+++ b/vendor/github.com/spf13/pflag/int32.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- int32 Value
 type int32Value int32
@@ -19,7 +16,28 @@ func (i *int32Value) Set(s string) error {
 	return err
 }
 
-func (i *int32Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *int32Value) Type() string {
+	return "int32"
+}
+
+func (i *int32Value) String() string { return strconv.FormatInt(int64(*i), 10) }
+
+func int32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseInt(sval, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return int32(v), nil
+}
+
+// GetInt32 return the int32 value of a flag with the given name
+func (f *FlagSet) GetInt32(name string) (int32, error) {
+	val, err := f.getFlagType(name, "int32", int32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int32), nil
+}
 
 // Int32Var defines an int32 flag with specified name, default value, and usage string.
 // The argument p points to an int32 variable in which to store the value of the flag.
@@ -27,7 +45,7 @@ func (f *FlagSet) Int32Var(p *int32, name string, value int32, usage string) {
 	f.VarP(newInt32Value(value, p), name, "", usage)
 }
 
-// Like Int32Var, but accepts a shorthand letter that can be used after a single dash.
+// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
 	f.VarP(newInt32Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func Int32Var(p *int32, name string, value int32, usage string) {
 	CommandLine.VarP(newInt32Value(value, p), name, "", usage)
 }
 
-// Like Int32Var, but accepts a shorthand letter that can be used after a single dash.
+// Int32VarP is like Int32Var, but accepts a shorthand letter that can be used after a single dash.
 func Int32VarP(p *int32, name, shorthand string, value int32, usage string) {
 	CommandLine.VarP(newInt32Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Int32(name string, value int32, usage string) *int32 {
 	return p
 }
 
-// Like Int32, but accepts a shorthand letter that can be used after a single dash.
+// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int32P(name, shorthand string, value int32, usage string) *int32 {
 	p := new(int32)
 	f.Int32VarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Int32(name string, value int32, usage string) *int32 {
 	return CommandLine.Int32P(name, "", value, usage)
 }
 
-// Like Int32, but accepts a shorthand letter that can be used after a single dash.
+// Int32P is like Int32, but accepts a shorthand letter that can be used after a single dash.
 func Int32P(name, shorthand string, value int32, usage string) *int32 {
 	return CommandLine.Int32P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/int64.go b/vendor/github.com/spf13/pflag/int64.go
index 43aeced..0026d78 100644
--- a/vendor/github.com/victorhaggqvist/pflag/int64.go
+++ b/vendor/github.com/spf13/pflag/int64.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- int64 Value
 type int64Value int64
@@ -19,7 +16,24 @@ func (i *int64Value) Set(s string) error {
 	return err
 }
 
-func (i *int64Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *int64Value) Type() string {
+	return "int64"
+}
+
+func (i *int64Value) String() string { return strconv.FormatInt(int64(*i), 10) }
+
+func int64Conv(sval string) (interface{}, error) {
+	return strconv.ParseInt(sval, 0, 64)
+}
+
+// GetInt64 return the int64 value of a flag with the given name
+func (f *FlagSet) GetInt64(name string) (int64, error) {
+	val, err := f.getFlagType(name, "int64", int64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int64), nil
+}
 
 // Int64Var defines an int64 flag with specified name, default value, and usage string.
 // The argument p points to an int64 variable in which to store the value of the flag.
@@ -27,7 +41,7 @@ func (f *FlagSet) Int64Var(p *int64, name string, value int64, usage string) {
 	f.VarP(newInt64Value(value, p), name, "", usage)
 }
 
-// Like Int64Var, but accepts a shorthand letter that can be used after a single dash.
+// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
 	f.VarP(newInt64Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +52,7 @@ func Int64Var(p *int64, name string, value int64, usage string) {
 	CommandLine.VarP(newInt64Value(value, p), name, "", usage)
 }
 
-// Like Int64Var, but accepts a shorthand letter that can be used after a single dash.
+// Int64VarP is like Int64Var, but accepts a shorthand letter that can be used after a single dash.
 func Int64VarP(p *int64, name, shorthand string, value int64, usage string) {
 	CommandLine.VarP(newInt64Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +65,7 @@ func (f *FlagSet) Int64(name string, value int64, usage string) *int64 {
 	return p
 }
 
-// Like Int64, but accepts a shorthand letter that can be used after a single dash.
+// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int64P(name, shorthand string, value int64, usage string) *int64 {
 	p := new(int64)
 	f.Int64VarP(p, name, shorthand, value, usage)
@@ -64,7 +78,7 @@ func Int64(name string, value int64, usage string) *int64 {
 	return CommandLine.Int64P(name, "", value, usage)
 }
 
-// Like Int64, but accepts a shorthand letter that can be used after a single dash.
+// Int64P is like Int64, but accepts a shorthand letter that can be used after a single dash.
 func Int64P(name, shorthand string, value int64, usage string) *int64 {
 	return CommandLine.Int64P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/int8.go b/vendor/github.com/spf13/pflag/int8.go
index 539c4eb..4da9222 100644
--- a/vendor/github.com/victorhaggqvist/pflag/int8.go
+++ b/vendor/github.com/spf13/pflag/int8.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- int8 Value
 type int8Value int8
@@ -19,7 +16,28 @@ func (i *int8Value) Set(s string) error {
 	return err
 }
 
-func (i *int8Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *int8Value) Type() string {
+	return "int8"
+}
+
+func (i *int8Value) String() string { return strconv.FormatInt(int64(*i), 10) }
+
+func int8Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseInt(sval, 0, 8)
+	if err != nil {
+		return 0, err
+	}
+	return int8(v), nil
+}
+
+// GetInt8 return the int8 value of a flag with the given name
+func (f *FlagSet) GetInt8(name string) (int8, error) {
+	val, err := f.getFlagType(name, "int8", int8Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(int8), nil
+}
 
 // Int8Var defines an int8 flag with specified name, default value, and usage string.
 // The argument p points to an int8 variable in which to store the value of the flag.
@@ -27,7 +45,7 @@ func (f *FlagSet) Int8Var(p *int8, name string, value int8, usage string) {
 	f.VarP(newInt8Value(value, p), name, "", usage)
 }
 
-// Like Int8Var, but accepts a shorthand letter that can be used after a single dash.
+// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int8VarP(p *int8, name, shorthand string, value int8, usage string) {
 	f.VarP(newInt8Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func Int8Var(p *int8, name string, value int8, usage string) {
 	CommandLine.VarP(newInt8Value(value, p), name, "", usage)
 }
 
-// Like Int8Var, but accepts a shorthand letter that can be used after a single dash.
+// Int8VarP is like Int8Var, but accepts a shorthand letter that can be used after a single dash.
 func Int8VarP(p *int8, name, shorthand string, value int8, usage string) {
 	CommandLine.VarP(newInt8Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Int8(name string, value int8, usage string) *int8 {
 	return p
 }
 
-// Like Int8, but accepts a shorthand letter that can be used after a single dash.
+// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Int8P(name, shorthand string, value int8, usage string) *int8 {
 	p := new(int8)
 	f.Int8VarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Int8(name string, value int8, usage string) *int8 {
 	return CommandLine.Int8P(name, "", value, usage)
 }
 
-// Like Int8, but accepts a shorthand letter that can be used after a single dash.
+// Int8P is like Int8, but accepts a shorthand letter that can be used after a single dash.
 func Int8P(name, shorthand string, value int8, usage string) *int8 {
 	return CommandLine.Int8P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/ip.go b/vendor/github.com/spf13/pflag/ip.go
index 3a411fc..3d414ba 100644
--- a/vendor/github.com/victorhaggqvist/pflag/ip.go
+++ b/vendor/github.com/spf13/pflag/ip.go
@@ -3,6 +3,7 @@ package pflag
 import (
 	"fmt"
 	"net"
+	"strings"
 )
 
 // -- net.IP value
@@ -15,15 +16,33 @@ func newIPValue(val net.IP, p *net.IP) *ipValue {
 
 func (i *ipValue) String() string { return net.IP(*i).String() }
 func (i *ipValue) Set(s string) error {
-	ip := net.ParseIP(s)
+	ip := net.ParseIP(strings.TrimSpace(s))
 	if ip == nil {
 		return fmt.Errorf("failed to parse IP: %q", s)
 	}
 	*i = ipValue(ip)
 	return nil
 }
-func (i *ipValue) Get() interface{} {
-	return net.IP(*i)
+
+func (i *ipValue) Type() string {
+	return "ip"
+}
+
+func ipConv(sval string) (interface{}, error) {
+	ip := net.ParseIP(sval)
+	if ip != nil {
+		return ip, nil
+	}
+	return nil, fmt.Errorf("invalid string being converted to IP address: %s", sval)
+}
+
+// GetIP return the net.IP value of a flag with the given name
+func (f *FlagSet) GetIP(name string) (net.IP, error) {
+	val, err := f.getFlagType(name, "ip", ipConv)
+	if err != nil {
+		return nil, err
+	}
+	return val.(net.IP), nil
 }
 
 // IPVar defines an net.IP flag with specified name, default value, and usage string.
@@ -32,7 +51,7 @@ func (f *FlagSet) IPVar(p *net.IP, name string, value net.IP, usage string) {
 	f.VarP(newIPValue(value, p), name, "", usage)
 }
 
-// Like IPVar, but accepts a shorthand letter that can be used after a single dash.
+// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
 	f.VarP(newIPValue(value, p), name, shorthand, usage)
 }
@@ -43,7 +62,7 @@ func IPVar(p *net.IP, name string, value net.IP, usage string) {
 	CommandLine.VarP(newIPValue(value, p), name, "", usage)
 }
 
-// Like IPVar, but accepts a shorthand letter that can be used after a single dash.
+// IPVarP is like IPVar, but accepts a shorthand letter that can be used after a single dash.
 func IPVarP(p *net.IP, name, shorthand string, value net.IP, usage string) {
 	CommandLine.VarP(newIPValue(value, p), name, shorthand, usage)
 }
@@ -56,7 +75,7 @@ func (f *FlagSet) IP(name string, value net.IP, usage string) *net.IP {
 	return p
 }
 
-// Like IP, but accepts a shorthand letter that can be used after a single dash.
+// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IPP(name, shorthand string, value net.IP, usage string) *net.IP {
 	p := new(net.IP)
 	f.IPVarP(p, name, shorthand, value, usage)
@@ -69,7 +88,7 @@ func IP(name string, value net.IP, usage string) *net.IP {
 	return CommandLine.IPP(name, "", value, usage)
 }
 
-// Like IP, but accepts a shorthand letter that can be used after a single dash.
+// IPP is like IP, but accepts a shorthand letter that can be used after a single dash.
 func IPP(name, shorthand string, value net.IP, usage string) *net.IP {
 	return CommandLine.IPP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/ipmask.go b/vendor/github.com/spf13/pflag/ipmask.go
index b8a164a..5bd44bd 100644
--- a/vendor/github.com/victorhaggqvist/pflag/ipmask.go
+++ b/vendor/github.com/spf13/pflag/ipmask.go
@@ -3,6 +3,7 @@ package pflag
 import (
 	"fmt"
 	"net"
+	"strconv"
 )
 
 // -- net.IPMask value
@@ -22,27 +23,63 @@ func (i *ipMaskValue) Set(s string) error {
 	*i = ipMaskValue(ip)
 	return nil
 }
-func (i *ipMaskValue) Get() interface{} {
-	return net.IPMask(*i)
+
+func (i *ipMaskValue) Type() string {
+	return "ipMask"
 }
 
-// Parse IPv4 netmask written in IP form (e.g. 255.255.255.0).
+// ParseIPv4Mask written in IP form (e.g. 255.255.255.0).
 // This function should really belong to the net package.
 func ParseIPv4Mask(s string) net.IPMask {
 	mask := net.ParseIP(s)
 	if mask == nil {
-		return nil
+		if len(s) != 8 {
+			return nil
+		}
+		// net.IPMask.String() actually outputs things like ffffff00
+		// so write a horrible parser for that as well  :-(
+		m := []int{}
+		for i := 0; i < 4; i++ {
+			b := "0x" + s[2*i:2*i+2]
+			d, err := strconv.ParseInt(b, 0, 0)
+			if err != nil {
+				return nil
+			}
+			m = append(m, int(d))
+		}
+		s := fmt.Sprintf("%d.%d.%d.%d", m[0], m[1], m[2], m[3])
+		mask = net.ParseIP(s)
+		if mask == nil {
+			return nil
+		}
 	}
 	return net.IPv4Mask(mask[12], mask[13], mask[14], mask[15])
 }
 
+func parseIPv4Mask(sval string) (interface{}, error) {
+	mask := ParseIPv4Mask(sval)
+	if mask == nil {
+		return nil, fmt.Errorf("unable to parse %s as net.IPMask", sval)
+	}
+	return mask, nil
+}
+
+// GetIPv4Mask return the net.IPv4Mask value of a flag with the given name
+func (f *FlagSet) GetIPv4Mask(name string) (net.IPMask, error) {
+	val, err := f.getFlagType(name, "ipMask", parseIPv4Mask)
+	if err != nil {
+		return nil, err
+	}
+	return val.(net.IPMask), nil
+}
+
 // IPMaskVar defines an net.IPMask flag with specified name, default value, and usage string.
 // The argument p points to an net.IPMask variable in which to store the value of the flag.
 func (f *FlagSet) IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
 	f.VarP(newIPMaskValue(value, p), name, "", usage)
 }
 
-// Like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
+// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
 	f.VarP(newIPMaskValue(value, p), name, shorthand, usage)
 }
@@ -53,7 +90,7 @@ func IPMaskVar(p *net.IPMask, name string, value net.IPMask, usage string) {
 	CommandLine.VarP(newIPMaskValue(value, p), name, "", usage)
 }
 
-// Like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
+// IPMaskVarP is like IPMaskVar, but accepts a shorthand letter that can be used after a single dash.
 func IPMaskVarP(p *net.IPMask, name, shorthand string, value net.IPMask, usage string) {
 	CommandLine.VarP(newIPMaskValue(value, p), name, shorthand, usage)
 }
@@ -66,7 +103,7 @@ func (f *FlagSet) IPMask(name string, value net.IPMask, usage string) *net.IPMas
 	return p
 }
 
-// Like IPMask, but accepts a shorthand letter that can be used after a single dash.
+// IPMaskP is like IPMask, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
 	p := new(net.IPMask)
 	f.IPMaskVarP(p, name, shorthand, value, usage)
@@ -79,7 +116,7 @@ func IPMask(name string, value net.IPMask, usage string) *net.IPMask {
 	return CommandLine.IPMaskP(name, "", value, usage)
 }
 
-// Like IP, but accepts a shorthand letter that can be used after a single dash.
+// IPMaskP is like IP, but accepts a shorthand letter that can be used after a single dash.
 func IPMaskP(name, shorthand string, value net.IPMask, usage string) *net.IPMask {
 	return CommandLine.IPMaskP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/string.go b/vendor/github.com/spf13/pflag/string.go
index 65c0cb7..04e0a26 100644
--- a/vendor/github.com/victorhaggqvist/pflag/string.go
+++ b/vendor/github.com/spf13/pflag/string.go
@@ -1,7 +1,5 @@
 package pflag
 
-import "fmt"
-
 // -- string Value
 type stringValue string
 
@@ -14,8 +12,24 @@ func (s *stringValue) Set(val string) error {
 	*s = stringValue(val)
 	return nil
 }
+func (s *stringValue) Type() string {
+	return "string"
+}
+
+func (s *stringValue) String() string { return string(*s) }
+
+func stringConv(sval string) (interface{}, error) {
+	return sval, nil
+}
 
-func (s *stringValue) String() string { return fmt.Sprintf("%s", *s) }
+// GetString return the string value of a flag with the given name
+func (f *FlagSet) GetString(name string) (string, error) {
+	val, err := f.getFlagType(name, "string", stringConv)
+	if err != nil {
+		return "", err
+	}
+	return val.(string), nil
+}
 
 // StringVar defines a string flag with specified name, default value, and usage string.
 // The argument p points to a string variable in which to store the value of the flag.
@@ -23,7 +37,7 @@ func (f *FlagSet) StringVar(p *string, name string, value string, usage string)
 	f.VarP(newStringValue(value, p), name, "", usage)
 }
 
-// Like StringVar, but accepts a shorthand letter that can be used after a single dash.
+// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) StringVarP(p *string, name, shorthand string, value string, usage string) {
 	f.VarP(newStringValue(value, p), name, shorthand, usage)
 }
@@ -34,7 +48,7 @@ func StringVar(p *string, name string, value string, usage string) {
 	CommandLine.VarP(newStringValue(value, p), name, "", usage)
 }
 
-// Like StringVar, but accepts a shorthand letter that can be used after a single dash.
+// StringVarP is like StringVar, but accepts a shorthand letter that can be used after a single dash.
 func StringVarP(p *string, name, shorthand string, value string, usage string) {
 	CommandLine.VarP(newStringValue(value, p), name, shorthand, usage)
 }
@@ -47,7 +61,7 @@ func (f *FlagSet) String(name string, value string, usage string) *string {
 	return p
 }
 
-// Like String, but accepts a shorthand letter that can be used after a single dash.
+// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) StringP(name, shorthand string, value string, usage string) *string {
 	p := new(string)
 	f.StringVarP(p, name, shorthand, value, usage)
@@ -60,7 +74,7 @@ func String(name string, value string, usage string) *string {
 	return CommandLine.StringP(name, "", value, usage)
 }
 
-// Like String, but accepts a shorthand letter that can be used after a single dash.
+// StringP is like String, but accepts a shorthand letter that can be used after a single dash.
 func StringP(name, shorthand string, value string, usage string) *string {
 	return CommandLine.StringP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/uint.go b/vendor/github.com/spf13/pflag/uint.go
index 40b9ebb..dcbc2b7 100644
--- a/vendor/github.com/victorhaggqvist/pflag/uint.go
+++ b/vendor/github.com/spf13/pflag/uint.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- uint Value
 type uintValue uint
@@ -19,7 +16,28 @@ func (i *uintValue) Set(s string) error {
 	return err
 }
 
-func (i *uintValue) String() string { return fmt.Sprintf("%v", *i) }
+func (i *uintValue) Type() string {
+	return "uint"
+}
+
+func (i *uintValue) String() string { return strconv.FormatUint(uint64(*i), 10) }
+
+func uintConv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 0)
+	if err != nil {
+		return 0, err
+	}
+	return uint(v), nil
+}
+
+// GetUint return the uint value of a flag with the given name
+func (f *FlagSet) GetUint(name string) (uint, error) {
+	val, err := f.getFlagType(name, "uint", uintConv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint), nil
+}
 
 // UintVar 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.
@@ -27,7 +45,7 @@ func (f *FlagSet) UintVar(p *uint, name string, value uint, usage string) {
 	f.VarP(newUintValue(value, p), name, "", usage)
 }
 
-// Like UintVar, but accepts a shorthand letter that can be used after a single dash.
+// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) UintVarP(p *uint, name, shorthand string, value uint, usage string) {
 	f.VarP(newUintValue(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func UintVar(p *uint, name string, value uint, usage string) {
 	CommandLine.VarP(newUintValue(value, p), name, "", usage)
 }
 
-// Like UintVar, but accepts a shorthand letter that can be used after a single dash.
+// UintVarP is like UintVar, but accepts a shorthand letter that can be used after a single dash.
 func UintVarP(p *uint, name, shorthand string, value uint, usage string) {
 	CommandLine.VarP(newUintValue(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Uint(name string, value uint, usage string) *uint {
 	return p
 }
 
-// Like Uint, but accepts a shorthand letter that can be used after a single dash.
+// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) UintP(name, shorthand string, value uint, usage string) *uint {
 	p := new(uint)
 	f.UintVarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Uint(name string, value uint, usage string) *uint {
 	return CommandLine.UintP(name, "", value, usage)
 }
 
-// Like Uint, but accepts a shorthand letter that can be used after a single dash.
+// UintP is like Uint, but accepts a shorthand letter that can be used after a single dash.
 func UintP(name, shorthand string, value uint, usage string) *uint {
 	return CommandLine.UintP(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/uint16.go b/vendor/github.com/spf13/pflag/uint16.go
index 182dc40..7e9914e 100644
--- a/vendor/github.com/victorhaggqvist/pflag/uint16.go
+++ b/vendor/github.com/spf13/pflag/uint16.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- uint16 value
 type uint16Value uint16
@@ -12,14 +9,34 @@ func newUint16Value(val uint16, p *uint16) *uint16Value {
 	*p = val
 	return (*uint16Value)(p)
 }
-func (i *uint16Value) String() string { return fmt.Sprintf("%d", *i) }
+
 func (i *uint16Value) Set(s string) error {
 	v, err := strconv.ParseUint(s, 0, 16)
 	*i = uint16Value(v)
 	return err
 }
-func (i *uint16Value) Get() interface{} {
-	return uint16(*i)
+
+func (i *uint16Value) Type() string {
+	return "uint16"
+}
+
+func (i *uint16Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
+
+func uint16Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 16)
+	if err != nil {
+		return 0, err
+	}
+	return uint16(v), nil
+}
+
+// GetUint16 return the uint16 value of a flag with the given name
+func (f *FlagSet) GetUint16(name string) (uint16, error) {
+	val, err := f.getFlagType(name, "uint16", uint16Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint16), nil
 }
 
 // Uint16Var defines a uint flag with specified name, default value, and usage string.
@@ -28,7 +45,7 @@ func (f *FlagSet) Uint16Var(p *uint16, name string, value uint16, usage string)
 	f.VarP(newUint16Value(value, p), name, "", usage)
 }
 
-// Like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) {
 	f.VarP(newUint16Value(value, p), name, shorthand, usage)
 }
@@ -39,7 +56,7 @@ func Uint16Var(p *uint16, name string, value uint16, usage string) {
 	CommandLine.VarP(newUint16Value(value, p), name, "", usage)
 }
 
-// Like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint16VarP is like Uint16Var, but accepts a shorthand letter that can be used after a single dash.
 func Uint16VarP(p *uint16, name, shorthand string, value uint16, usage string) {
 	CommandLine.VarP(newUint16Value(value, p), name, shorthand, usage)
 }
@@ -52,7 +69,7 @@ func (f *FlagSet) Uint16(name string, value uint16, usage string) *uint16 {
 	return p
 }
 
-// Like Uint16, but accepts a shorthand letter that can be used after a single dash.
+// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint16P(name, shorthand string, value uint16, usage string) *uint16 {
 	p := new(uint16)
 	f.Uint16VarP(p, name, shorthand, value, usage)
@@ -65,7 +82,7 @@ func Uint16(name string, value uint16, usage string) *uint16 {
 	return CommandLine.Uint16P(name, "", value, usage)
 }
 
-// Like Uint16, but accepts a shorthand letter that can be used after a single dash.
+// Uint16P is like Uint16, but accepts a shorthand letter that can be used after a single dash.
 func Uint16P(name, shorthand string, value uint16, usage string) *uint16 {
 	return CommandLine.Uint16P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/uint32.go b/vendor/github.com/spf13/pflag/uint32.go
index 165c8b2..d802453 100644
--- a/vendor/github.com/victorhaggqvist/pflag/uint32.go
+++ b/vendor/github.com/spf13/pflag/uint32.go
@@ -1,25 +1,42 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
-// -- uint16 value
+// -- uint32 value
 type uint32Value uint32
 
 func newUint32Value(val uint32, p *uint32) *uint32Value {
 	*p = val
 	return (*uint32Value)(p)
 }
-func (i *uint32Value) String() string { return fmt.Sprintf("%d", *i) }
+
 func (i *uint32Value) Set(s string) error {
 	v, err := strconv.ParseUint(s, 0, 32)
 	*i = uint32Value(v)
 	return err
 }
-func (i *uint32Value) Get() interface{} {
-	return uint32(*i)
+
+func (i *uint32Value) Type() string {
+	return "uint32"
+}
+
+func (i *uint32Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
+
+func uint32Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 32)
+	if err != nil {
+		return 0, err
+	}
+	return uint32(v), nil
+}
+
+// GetUint32 return the uint32 value of a flag with the given name
+func (f *FlagSet) GetUint32(name string) (uint32, error) {
+	val, err := f.getFlagType(name, "uint32", uint32Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint32), nil
 }
 
 // Uint32Var defines a uint32 flag with specified name, default value, and usage string.
@@ -28,7 +45,7 @@ func (f *FlagSet) Uint32Var(p *uint32, name string, value uint32, usage string)
 	f.VarP(newUint32Value(value, p), name, "", usage)
 }
 
-// Like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) {
 	f.VarP(newUint32Value(value, p), name, shorthand, usage)
 }
@@ -39,7 +56,7 @@ func Uint32Var(p *uint32, name string, value uint32, usage string) {
 	CommandLine.VarP(newUint32Value(value, p), name, "", usage)
 }
 
-// Like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint32VarP is like Uint32Var, but accepts a shorthand letter that can be used after a single dash.
 func Uint32VarP(p *uint32, name, shorthand string, value uint32, usage string) {
 	CommandLine.VarP(newUint32Value(value, p), name, shorthand, usage)
 }
@@ -52,7 +69,7 @@ func (f *FlagSet) Uint32(name string, value uint32, usage string) *uint32 {
 	return p
 }
 
-// Like Uint32, but accepts a shorthand letter that can be used after a single dash.
+// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint32P(name, shorthand string, value uint32, usage string) *uint32 {
 	p := new(uint32)
 	f.Uint32VarP(p, name, shorthand, value, usage)
@@ -65,7 +82,7 @@ func Uint32(name string, value uint32, usage string) *uint32 {
 	return CommandLine.Uint32P(name, "", value, usage)
 }
 
-// Like Uint32, but accepts a shorthand letter that can be used after a single dash.
+// Uint32P is like Uint32, but accepts a shorthand letter that can be used after a single dash.
 func Uint32P(name, shorthand string, value uint32, usage string) *uint32 {
 	return CommandLine.Uint32P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/uint64.go b/vendor/github.com/spf13/pflag/uint64.go
index f41c5a2..f62240f 100644
--- a/vendor/github.com/victorhaggqvist/pflag/uint64.go
+++ b/vendor/github.com/spf13/pflag/uint64.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- uint64 Value
 type uint64Value uint64
@@ -19,7 +16,28 @@ func (i *uint64Value) Set(s string) error {
 	return err
 }
 
-func (i *uint64Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *uint64Value) Type() string {
+	return "uint64"
+}
+
+func (i *uint64Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
+
+func uint64Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 64)
+	if err != nil {
+		return 0, err
+	}
+	return uint64(v), nil
+}
+
+// GetUint64 return the uint64 value of a flag with the given name
+func (f *FlagSet) GetUint64(name string) (uint64, error) {
+	val, err := f.getFlagType(name, "uint64", uint64Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint64), nil
+}
 
 // Uint64Var defines a uint64 flag with specified name, default value, and usage string.
 // The argument p points to a uint64 variable in which to store the value of the flag.
@@ -27,7 +45,7 @@ func (f *FlagSet) Uint64Var(p *uint64, name string, value uint64, usage string)
 	f.VarP(newUint64Value(value, p), name, "", usage)
 }
 
-// Like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) {
 	f.VarP(newUint64Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func Uint64Var(p *uint64, name string, value uint64, usage string) {
 	CommandLine.VarP(newUint64Value(value, p), name, "", usage)
 }
 
-// Like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint64VarP is like Uint64Var, but accepts a shorthand letter that can be used after a single dash.
 func Uint64VarP(p *uint64, name, shorthand string, value uint64, usage string) {
 	CommandLine.VarP(newUint64Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Uint64(name string, value uint64, usage string) *uint64 {
 	return p
 }
 
-// Like Uint64, but accepts a shorthand letter that can be used after a single dash.
+// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint64P(name, shorthand string, value uint64, usage string) *uint64 {
 	p := new(uint64)
 	f.Uint64VarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Uint64(name string, value uint64, usage string) *uint64 {
 	return CommandLine.Uint64P(name, "", value, usage)
 }
 
-// Like Uint64, but accepts a shorthand letter that can be used after a single dash.
+// Uint64P is like Uint64, but accepts a shorthand letter that can be used after a single dash.
 func Uint64P(name, shorthand string, value uint64, usage string) *uint64 {
 	return CommandLine.Uint64P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/uint8.go b/vendor/github.com/spf13/pflag/uint8.go
index 174f99c..bb0e83c 100644
--- a/vendor/github.com/victorhaggqvist/pflag/uint8.go
+++ b/vendor/github.com/spf13/pflag/uint8.go
@@ -1,9 +1,6 @@
 package pflag
 
-import (
-	"fmt"
-	"strconv"
-)
+import "strconv"
 
 // -- uint8 Value
 type uint8Value uint8
@@ -19,7 +16,28 @@ func (i *uint8Value) Set(s string) error {
 	return err
 }
 
-func (i *uint8Value) String() string { return fmt.Sprintf("%v", *i) }
+func (i *uint8Value) Type() string {
+	return "uint8"
+}
+
+func (i *uint8Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
+
+func uint8Conv(sval string) (interface{}, error) {
+	v, err := strconv.ParseUint(sval, 0, 8)
+	if err != nil {
+		return 0, err
+	}
+	return uint8(v), nil
+}
+
+// GetUint8 return the uint8 value of a flag with the given name
+func (f *FlagSet) GetUint8(name string) (uint8, error) {
+	val, err := f.getFlagType(name, "uint8", uint8Conv)
+	if err != nil {
+		return 0, err
+	}
+	return val.(uint8), nil
+}
 
 // Uint8Var defines a uint8 flag with specified name, default value, and usage string.
 // The argument p points to a uint8 variable in which to store the value of the flag.
@@ -27,7 +45,7 @@ func (f *FlagSet) Uint8Var(p *uint8, name string, value uint8, usage string) {
 	f.VarP(newUint8Value(value, p), name, "", usage)
 }
 
-// Like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
 	f.VarP(newUint8Value(value, p), name, shorthand, usage)
 }
@@ -38,7 +56,7 @@ func Uint8Var(p *uint8, name string, value uint8, usage string) {
 	CommandLine.VarP(newUint8Value(value, p), name, "", usage)
 }
 
-// Like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
+// Uint8VarP is like Uint8Var, but accepts a shorthand letter that can be used after a single dash.
 func Uint8VarP(p *uint8, name, shorthand string, value uint8, usage string) {
 	CommandLine.VarP(newUint8Value(value, p), name, shorthand, usage)
 }
@@ -51,7 +69,7 @@ func (f *FlagSet) Uint8(name string, value uint8, usage string) *uint8 {
 	return p
 }
 
-// Like Uint8, but accepts a shorthand letter that can be used after a single dash.
+// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
 func (f *FlagSet) Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
 	p := new(uint8)
 	f.Uint8VarP(p, name, shorthand, value, usage)
@@ -64,7 +82,7 @@ func Uint8(name string, value uint8, usage string) *uint8 {
 	return CommandLine.Uint8P(name, "", value, usage)
 }
 
-// Like Uint8, but accepts a shorthand letter that can be used after a single dash.
+// Uint8P is like Uint8, but accepts a shorthand letter that can be used after a single dash.
 func Uint8P(name, shorthand string, value uint8, usage string) *uint8 {
 	return CommandLine.Uint8P(name, shorthand, value, usage)
 }
diff --git a/vendor/github.com/victorhaggqvist/pflag/README.md b/vendor/github.com/victorhaggqvist/pflag/README.md
deleted file mode 100644
index d9b189f..0000000
--- a/vendor/github.com/victorhaggqvist/pflag/README.md
+++ /dev/null
@@ -1,157 +0,0 @@
-[![Build Status](https://travis-ci.org/ogier/pflag.png?branch=master)](https://travis-ci.org/ogier/pflag)
-
-## Description
-
-pflag is a drop-in replacement for Go's flag package, implementing
-POSIX/GNU-style --flags.
-
-pflag is compatible with the [GNU extensions to the POSIX recommendations
-for command-line options][1]. For a more precise description, see the
-"Command-line flag syntax" section below.
-
-[1]: http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
-
-pflag is available under the same style of BSD license as the Go language,
-which can be found in the LICENSE file.
-
-## Installation
-
-pflag is available using the standard `go get` command.
-
-Install by running:
-
-    go get github.com/ogier/pflag
-
-Run tests by running:
-
-    go test github.com/ogier/pflag
-
-## Usage
-
-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.
-
-``` go
-import flag "github.com/ogier/pflag"
-```
-
-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
-unaffected.
-
-Define flags using flag.String(), Bool(), Int(), etc.
-
-This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
-
-``` go
-var ip *int = flag.Int("flagname", 1234, "help message for flagname")
-```
-
-If you like, you can bind the flag to a variable using the Var() functions.
-
-``` go
-var flagvar int
-func init() {
-    flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
-}
-```
-
-Or you can create custom flags that satisfy the Value interface (with
-pointer receivers) and couple them to flag parsing by
-
-``` go
-flag.Var(&flagVal, "name", "help message for flagname")
-```
-
-For such flags, the default value is just the initial value of the variable.
-
-After all flags are defined, call
-
-``` go
-flag.Parse()
-```
-
-to parse the command line into the defined flags.
-
-Flags may then be used directly. If you're using the flags themselves,
-they are all pointers; if you bind to variables, they're values.
-
-``` go
-fmt.Println("ip has value ", *ip)
-fmt.Println("flagvar has value ", flagvar)
-```
-
-After parsing, the arguments after the flag are available as the
-slice flag.Args() or individually as flag.Arg(i).
-The arguments are indexed from 0 through flag.NArg()-1.
-
-The pflag package also defines some new functions that are not in flag,
-that give one-letter shorthands for flags. You can use these by appending
-'P' to the name of any function that defines a flag.
-
-``` go
-var ip = flag.IntP("flagname", "f", 1234, "help message")
-var flagvar bool
-func init() {
-    flag.BoolVarP("boolname", "b", true, "help message")
-}
-flag.VarP(&flagVar, "varname", "v", 1234, "help message")
-```
-
-Shorthand letters can be used with single dashes on the command line.
-Boolean shorthand flags can be combined with other shorthand flags.
-
-The default set of command-line flags is controlled by
-top-level functions.  The FlagSet type allows one to define
-independent sets of flags, such as to implement subcommands
-in a command-line interface. The methods of FlagSet are
-analogous to the top-level functions for the command-line
-flag set.
-
-## Command line flag syntax
-
-```
---flag    // boolean flags only
---flag=x
-```
-
-Unlike the flag package, a single dash before an option means something
-different than a double dash. Single dashes signify a series of shorthand
-letters for flags. All but the last shorthand letter must be boolean flags.
-
-```
-// boolean flags
--f
--abc
-
-// non-boolean flags
--n 1234
--Ifile
-
-// mixed
--abcs "hello"
--abcn1234
-```
-
-Flag parsing stops after the terminator "--". Unlike the flag package,
-flags can be interspersed with arguments anywhere on the command line
-before this terminator.
-
-Integer flags accept 1234, 0664, 0x1234 and may be negative.
-Boolean flags (in their long form) accept 1, 0, t, f, true, false,
-TRUE, FALSE, True, False.
-Duration flags accept any input valid for time.ParseDuration.
-
-## More info
-
-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
-installation.
-
-[2]: http://localhost:6060/pkg/github.com/ogier/pflag
-[3]: http://godoc.org/github.com/ogier/pflag
diff --git a/vendor/github.com/victorhaggqvist/pflag/flag.go b/vendor/github.com/victorhaggqvist/pflag/flag.go
deleted file mode 100644
index cb0c6eb..0000000
--- a/vendor/github.com/victorhaggqvist/pflag/flag.go
+++ /dev/null
@@ -1,644 +0,0 @@
-// Copyright 2009 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-/*
-	pflag is a drop-in replacement for Go's flag package, implementing
-	POSIX/GNU-style --flags.
-
-	pflag is compatible with the GNU extensions to the POSIX recommendations
-	for command-line options. See
-	http://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html
-
-	Usage:
-
-	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"
-
-	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
-	unaffected.
-
-	Define flags using flag.String(), Bool(), Int(), etc.
-
-	This declares an integer flag, -flagname, stored in the pointer ip, with type *int.
-		var ip = flag.Int("flagname", 1234, "help message for flagname")
-	If you like, you can bind the flag to a variable using the Var() functions.
-		var flagvar int
-		func init() {
-			flag.IntVar(&flagvar, "flagname", 1234, "help message for flagname")
-		}
-	Or you can create custom flags that satisfy the Value interface (with
-	pointer receivers) and couple them to flag parsing by
-		flag.Var(&flagVal, "name", "help message for flagname")
-	For such flags, the default value is just the initial value of the variable.
-
-	After all flags are defined, call
-		flag.Parse()
-	to parse the command line into the defined flags.
-
-	Flags may then be used directly. If you're using the flags themselves,
-	they are all pointers; if you bind to variables, they're values.
-		fmt.Println("ip has value ", *ip)
-		fmt.Println("flagvar has value ", flagvar)
-
-	After parsing, the arguments after the flag are available as the
-	slice flag.Args() or individually as flag.Arg(i).
-	The arguments are indexed from 0 through flag.NArg()-1.
-
-	The pflag package also defines some new functions that are not in flag,
-	that give one-letter shorthands for flags. You can use these by appending
-	'P' to the name of any function that defines a flag.
-		var ip = flag.IntP("flagname", "f", 1234, "help message")
-		var flagvar bool
-		func init() {
-			flag.BoolVarP("boolname", "b", true, "help message")
-		}
-		flag.VarP(&flagVar, "varname", "v", 1234, "help message")
-	Shorthand letters can be used with single dashes on the command line.
-	Boolean shorthand flags can be combined with other shorthand flags.
-
-	Command line flag syntax:
-		--flag    // boolean flags only
-		--flag=x
-
-	Unlike the flag package, a single dash before an option means something
-	different than a double dash. Single dashes signify a series of shorthand
-	letters for flags. All but the last shorthand letter must be boolean flags.
-		// boolean flags
-		-f
-		-abc
-		// non-boolean flags
-		-n 1234
-		-Ifile
-		// mixed
-		-abcs "hello"
-		-abcn1234
-
-	Flag parsing stops after the terminator "--". Unlike the flag package,
-	flags can be interspersed with arguments anywhere on the command line
-	before this terminator.
-
-	Integer flags accept 1234, 0664, 0x1234 and may be negative.
-	Boolean flags (in their long form) accept 1, 0, t, f, true, false,
-	TRUE, FALSE, True, False.
-	Duration flags accept any input valid for time.ParseDuration.
-
-	The default set of command-line flags is controlled by
-	top-level functions.  The FlagSet type allows one to define
-	independent sets of flags, such as to implement subcommands
-	in a command-line interface. The methods of FlagSet are
-	analogous to the top-level functions for the command-line
-	flag set.
-*/
-package pflag
-
-import (
-	"errors"
-	"fmt"
-	"io"
-	"os"
-	"runtime"
-	"sort"
-	"strings"
-)
-
-// ErrHelp is the error returned if the flag -help is invoked but no such flag is defined.
-var ErrHelp = errors.New("pflag: help requested")
-
-// ErrorHandling defines how to handle flag parsing errors.
-type ErrorHandling int
-
-const (
-	ContinueOnError ErrorHandling = iota
-	ExitOnError
-	PanicOnError
-)
-
-// A FlagSet represents a set of defined flags.
-type FlagSet struct {
-	// Usage is the function called when an error occurs while parsing flags.
-	// The field is a function (not a method) that may be changed to point to
-	// a custom error handler.
-	Usage func()
-
-	name          string
-	parsed        bool
-	actual        map[string]*Flag
-	formal        map[string]*Flag
-	shorthands    map[byte]*Flag
-	args          []string // arguments after flags
-	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
-}
-
-// A Flag represents the state of a flag.
-type Flag struct {
-	Name      string // name as it appears on command line
-	Shorthand string // one-letter abbreviated flag
-	Usage     string // help message
-	Value     Value  // value as set
-	DefValue  string // default value (as text); for usage message
-}
-
-// sortFlags returns the flags as a slice in lexicographical sorted order.
-func sortFlags(flags map[string]*Flag) []*Flag {
-	list := make(sort.StringSlice, len(flags))
-	i := 0
-	for _, f := range flags {
-		list[i] = f.Name
-		i++
-	}
-	list.Sort()
-	result := make([]*Flag, len(list))
-	for i, name := range list {
-		result[i] = flags[name]
-	}
-	return result
-}
-
-func (f *FlagSet) out() io.Writer {
-	if f.output == nil {
-		return os.Stderr
-	}
-	return f.output
-}
-
-// SetOutput sets the destination for usage and error messages.
-// If output is nil, os.Stderr is used.
-func (f *FlagSet) SetOutput(output io.Writer) {
-	f.output = output
-}
-
-// VisitAll visits the flags in lexicographical order, 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) {
-		fn(flag)
-	}
-}
-
-// VisitAll visits the command-line flags in lexicographical order, 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.
-// It visits only those flags that have been set.
-func (f *FlagSet) Visit(fn func(*Flag)) {
-	for _, flag := range sortFlags(f.actual) {
-		fn(flag)
-	}
-}
-
-// Visit visits the command-line flags in lexicographical order, calling fn
-// for each.  It visits only those flags that have been set.
-func Visit(fn func(*Flag)) {
-	CommandLine.Visit(fn)
-}
-
-// Lookup returns the Flag structure of the named flag, returning nil if none exists.
-func (f *FlagSet) Lookup(name string) *Flag {
-	return f.formal[name]
-}
-
-// Lookup returns the Flag structure of the named command-line flag,
-// returning nil if none exists.
-func Lookup(name string) *Flag {
-	return CommandLine.formal[name]
-}
-
-// Set sets the value of the named flag.
-func (f *FlagSet) Set(name, value string) error {
-	flag, ok := f.formal[name]
-	if !ok {
-		return fmt.Errorf("no such flag -%v", name)
-	}
-	err := flag.Value.Set(value)
-	if err != nil {
-		return err
-	}
-	if f.actual == nil {
-		f.actual = make(map[string]*Flag)
-	}
-	f.actual[name] = flag
-	return nil
-}
-
-// Set sets the value of the named command-line flag.
-func Set(name, value string) error {
-	return CommandLine.Set(name, value)
-}
-
-// isZeroValue guesses whether the string represents the zero
-// value for a flag. It is not accurate but in practice works OK.
-func isZeroValue(value string) bool {
-	switch value {
-	case "false":
-		return true
-	case "":
-		return true
-	case "0":
-		return true
-	}
-	return false
-}
-
-// UnquoteUsage extracts a back-quoted name from the usage
-// string for a flag and returns it and the un-quoted usage.
-// Given "a `name` to show" it returns ("name", "a name to show").
-// If there are no back quotes, the name is an educated guess of the
-// type of the flag's value, or the empty string if the flag is boolean.
-func UnquoteUsage(flag *Flag) (name string, usage string) {
-	// Look for a back-quoted name, but avoid the strings package.
-	usage = flag.Usage
-	for i := 0; i < len(usage); i++ {
-		if usage[i] == '`' {
-			for j := i + 1; j < len(usage); j++ {
-				if usage[j] == '`' {
-					name = usage[i+1 : j]
-					usage = usage[:i] + name + usage[j+1:]
-					return name, usage
-				}
-			}
-			break // Only one back quote; use type name.
-		}
-	}
-	// No explicit name, so use type if we can find one.
-	name = "value"
-	switch flag.Value.(type) {
-	case boolFlag:
-		name = ""
-	case *durationValue:
-		name = "duration"
-	case *float64Value:
-		name = "float"
-	case *intValue, *int64Value:
-		name = "int"
-	case *stringValue:
-		name = "string"
-	case *uintValue, *uint64Value:
-		name = "uint"
-	}
-	return
-}
-
-// PrintDefaults prints to standard error the default values of all
-// defined command-line flags in the set. See the documentation for
-// the global function PrintDefaults for more information.
-func (f *FlagSet) PrintDefaults() {
-	f.VisitAll(func(flag *Flag) {
-		s := ""
-		if len(flag.Shorthand) > 0 {
-			s = fmt.Sprintf("  -%s, --%s", flag.Shorthand, flag.Name)
-		} else {
-			s = fmt.Sprintf("  --%s", flag.Name)
-		}
-
-		name, usage := UnquoteUsage(flag)
-		if len(name) > 0 {
-			s += " " + name
-		}
-
-		s += "\n    \t"
-		s += usage
-		if !isZeroValue(flag.DefValue) {
-			if _, ok := flag.Value.(*stringValue); ok {
-				// put quotes on the value
-				s += fmt.Sprintf(" (default %q)", flag.DefValue)
-			} else {
-				s += fmt.Sprintf(" (default %v)", flag.DefValue)
-			}
-		}
-		fmt.Fprint(f.out(), s, "\n")
-	})
-}
-
-// PrintDefaults prints to standard error the default values of all defined command-line flags.
-func PrintDefaults() {
-	CommandLine.PrintDefaults()
-}
-
-// defaultUsage is the default function to print a usage message.
-func defaultUsage(f *FlagSet) {
-	if f.name == "" {
-		fmt.Fprintf(f.out(), "Usage:\n")
-	} else {
-		fmt.Fprintf(f.out(), "Usage of %s:\n", f.name)
-	}
-	f.PrintDefaults()
-}
-
-// NOTE: Usage is not just defaultUsage(CommandLine)
-// because it serves (via godoc flag Usage) as the example
-// for how to write your own usage function.
-
-// Usage prints to standard error a usage message documenting all defined command-line flags.
-// The function is a variable that may be changed to point to a custom function.
-var Usage = func() {
-	fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
-	PrintDefaults()
-}
-
-// If defined, the flag --version will print version information
-var Version string
-
-// NFlag returns the number of flags that have been set.
-func (f *FlagSet) NFlag() int { return len(f.actual) }
-
-// NFlag returns the number of command-line flags that have been set.
-func NFlag() int { return len(CommandLine.actual) }
-
-// Arg returns the i'th argument.  Arg(0) is the first remaining argument
-// after flags have been processed.
-func (f *FlagSet) Arg(i int) string {
-	if i < 0 || i >= len(f.args) {
-		return ""
-	}
-	return f.args[i]
-}
-
-// Arg returns the i'th command-line argument.  Arg(0) is the first remaining argument
-// after flags have been processed.
-func Arg(i int) string {
-	return CommandLine.Arg(i)
-}
-
-// NArg is the number of arguments remaining after flags have been processed.
-func (f *FlagSet) NArg() int { return len(f.args) }
-
-// NArg is the number of arguments remaining after flags have been processed.
-func NArg() int { return len(CommandLine.args) }
-
-// Args returns the non-flag arguments.
-func (f *FlagSet) Args() []string { return f.args }
-
-// Args returns the non-flag command-line arguments.
-func Args() []string { return CommandLine.args }
-
-// Var defines a flag with the specified name and usage string. The type and
-// value of the flag are represented by the first argument, of type Value, which
-// typically holds a user-defined implementation of Value. For instance, the
-// caller could create a flag that turns a comma-separated string into a slice
-// of strings by giving the slice the methods of Value; in particular, Set would
-// decompose the comma-separated string into the slice.
-func (f *FlagSet) Var(value Value, name string, usage string) {
-	f.VarP(value, name, "", usage)
-}
-
-// 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) {
-	// Remember the default value as a string; it won't change.
-	flag := &Flag{name, shorthand, usage, value, value.String()}
-	_, alreadythere := f.formal[name]
-	if alreadythere {
-		msg := fmt.Sprintf("%s flag redefined: %s", f.name, name)
-		fmt.Fprintln(f.out(), msg)
-		panic(msg) // Happens only if flags are declared with identical names
-	}
-	if f.formal == nil {
-		f.formal = make(map[string]*Flag)
-	}
-	f.formal[name] = flag
-
-	if len(shorthand) == 0 {
-		return
-	}
-	if len(shorthand) > 1 {
-		fmt.Fprintf(f.out(), "%s shorthand more than ASCII character: %s\n", f.name, shorthand)
-		panic("shorthand is more than one character")
-	}
-	if f.shorthands == nil {
-		f.shorthands = make(map[byte]*Flag)
-	}
-	c := shorthand[0]
-	old, alreadythere := f.shorthands[c]
-	if alreadythere {
-		fmt.Fprintf(f.out(), "%s shorthand reused: %q for %s already used for %s\n", f.name, c, name, old.Name)
-		panic("shorthand redefinition")
-	}
-	f.shorthands[c] = flag
-}
-
-// Var defines a flag with the specified name and usage string. The type and
-// value of the flag are represented by the first argument, of type Value, which
-// typically holds a user-defined implementation of Value. For instance, the
-// caller could create a flag that turns a comma-separated string into a slice
-// of strings by giving the slice the methods of Value; in particular, Set would
-// decompose the comma-separated string into the slice.
-func Var(value Value, name string, usage string) {
-	CommandLine.VarP(value, name, "", usage)
-}
-
-// Like Var, but accepts a shorthand letter that can be used after a single dash.
-func VarP(value Value, name, shorthand, usage string) {
-	CommandLine.VarP(value, name, shorthand, usage)
-}
-
-// failf prints to standard error a formatted error and usage message and
-// returns the error.
-func (f *FlagSet) failf(format string, a ...interface{}) error {
-	err := fmt.Errorf(format, a...)
-	fmt.Fprintln(f.out(), err)
-	f.usage()
-	return err
-}
-
-// usage calls the Usage method for the flag set, or the usage function if
-// the flag set is CommandLine.
-func (f *FlagSet) usage() {
-	if f == CommandLine {
-		Usage()
-	} else if f.Usage == nil {
-		defaultUsage(f)
-	} else {
-		f.Usage()
-	}
-}
-
-func (f *FlagSet) version() {
-	if Version != "" {
-		fmt.Fprintf(os.Stderr, "%s v%s (%s/%s/%s)\n", os.Args[0], Version, runtime.GOOS, runtime.GOARCH, runtime.Version())
-	}
-}
-
-func PrintVersion() {
-	CommandLine.version()
-}
-
-func (f *FlagSet) setFlag(flag *Flag, value string, origArg string) 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[string]*Flag)
-	}
-	f.actual[flag.Name] = flag
-
-	return nil
-}
-
-func (f *FlagSet) parseArgs(args []string) error {
-	for len(args) > 0 {
-		s := args[0]
-		args = args[1:]
-		if len(s) == 0 || s[0] != '-' || len(s) == 1 {
-			if !f.interspersed {
-				f.args = append(f.args, s)
-				f.args = append(f.args, args...)
-				return nil
-			}
-			f.args = append(f.args, s)
-			continue
-		}
-
-		if s[1] == '-' {
-			if len(s) == 2 { // "--" terminates the flags
-				f.args = append(f.args, args...)
-				return nil
-			}
-			name := s[2:]
-			if len(name) == 0 || name[0] == '-' || name[0] == '=' {
-				return f.failf("bad flag syntax: %s", s)
-			}
-			split := strings.SplitN(name, "=", 2)
-			name = split[0]
-			m := f.formal
-			flag, alreadythere := m[name] // BUG
-			if !alreadythere {
-				if name == "help" { // special case for nice help message.
-					f.usage()
-					return ErrHelp
-				} else if name == "version" { // special case for nice version string
-					f.version()
-					return ErrHelp
-				}
-				return f.failf("unknown flag: --%s", name)
-			}
-			if len(split) == 1 {
-				if bv, ok := flag.Value.(boolFlag); !ok || !bv.IsBoolFlag() {
-					return f.failf("flag needs an argument: %s", s)
-				}
-				f.setFlag(flag, "true", s)
-			} else {
-				if err := f.setFlag(flag, split[1], s); err != nil {
-					return err
-				}
-			}
-		} else {
-			shorthands := s[1:]
-			for i := 0; i < len(shorthands); i++ {
-				c := shorthands[i]
-				flag, alreadythere := f.shorthands[c]
-				if !alreadythere {
-					if c == 'h' { // special case for nice help message.
-						f.usage()
-						return ErrHelp
-					} else if c == 'V' { // special case for nice version string
-						f.version()
-						return ErrHelp
-					}
-					return f.failf("unknown shorthand flag: %q in -%s", c, shorthands)
-				}
-				if bv, ok := flag.Value.(boolFlag); ok && bv.IsBoolFlag() {
-					f.setFlag(flag, "true", s)
-					continue
-				}
-				if i < len(shorthands)-1 {
-					if err := f.setFlag(flag, shorthands[i+1:], s); err != nil {
-						return err
-					}
-					break
-				}
-				if len(args) == 0 {
-					return f.failf("flag needs an argument: %q in -%s", c, shorthands)
-				}
-				if err := f.setFlag(flag, args[0], s); err != nil {
-					return err
-				}
-				args = args[1:]
-				break // should be unnecessary
-			}
-		}
-	}
-	return nil
-}
-
-// Parse parses flag definitions from the argument list, which should not
-// include the command name.  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) Parse(arguments []string) error {
-	f.parsed = true
-	f.args = make([]string, 0, len(arguments))
-	err := f.parseArgs(arguments)
-	if err != nil {
-		switch f.errorHandling {
-		case ContinueOnError:
-			return err
-		case ExitOnError:
-			os.Exit(2)
-		case PanicOnError:
-			panic(err)
-		}
-	}
-	return nil
-}
-
-// Parsed reports whether f.Parse has been called.
-func (f *FlagSet) Parsed() bool {
-	return f.parsed
-}
-
-// Parse parses the command-line flags from os.Args[1:].  Must be called
-// after all flags are defined and before flags are accessed by the program.
-func Parse() {
-	// Ignore errors; CommandLine is set for ExitOnError.
-	CommandLine.Parse(os.Args[1:])
-}
-
-// Whether to support interspersed option/non-option arguments.
-func SetInterspersed(interspersed bool) {
-	CommandLine.SetInterspersed(interspersed)
-}
-
-// Parsed returns true if the command-line flags have been parsed.
-func Parsed() bool {
-	return CommandLine.Parsed()
-}
-
-// 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
-// error handling property.
-func NewFlagSet(name string, errorHandling ErrorHandling) *FlagSet {
-	f := &FlagSet{
-		name:          name,
-		errorHandling: errorHandling,
-		interspersed:  true,
-	}
-	return f
-}
-
-// Whether to support interspersed option/non-option arguments.
-func (f *FlagSet) SetInterspersed(interspersed bool) {
-	f.interspersed = interspersed
-}
-
-// Init sets the name and error handling property for a flag set.
-// By default, the zero FlagSet uses an empty name and the
-// ContinueOnError error handling policy.
-func (f *FlagSet) Init(name string, errorHandling ErrorHandling) {
-	f.name = name
-	f.errorHandling = errorHandling
-}