Work on #61: Add support for ICMP

+ Update dependencies

vendor/github.com/spf13/pflag/float64_slice.go

@@ -0,0 +1,166 @@
+package pflag
+
+import (
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// -- float64Slice Value
+type float64SliceValue struct {
+	value   *[]float64
+	changed bool
+}
+
+func newFloat64SliceValue(val []float64, p *[]float64) *float64SliceValue {
+	isv := new(float64SliceValue)
+	isv.value = p
+	*isv.value = val
+	return isv
+}
+
+func (s *float64SliceValue) Set(val string) error {
+	ss := strings.Split(val, ",")
+	out := make([]float64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseFloat(d, 64)
+		if err != nil {
+			return err
+		}
+
+	}
+	if !s.changed {
+		*s.value = out
+	} else {
+		*s.value = append(*s.value, out...)
+	}
+	s.changed = true
+	return nil
+}
+
+func (s *float64SliceValue) Type() string {
+	return "float64Slice"
+}
+
+func (s *float64SliceValue) String() string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = fmt.Sprintf("%f", d)
+	}
+	return "[" + strings.Join(out, ",") + "]"
+}
+
+func (s *float64SliceValue) fromString(val string) (float64, error) {
+	return strconv.ParseFloat(val, 64)
+}
+
+func (s *float64SliceValue) toString(val float64) string {
+	return fmt.Sprintf("%f", val)
+}
+
+func (s *float64SliceValue) Append(val string) error {
+	i, err := s.fromString(val)
+	if err != nil {
+		return err
+	}
+	*s.value = append(*s.value, i)
+	return nil
+}
+
+func (s *float64SliceValue) Replace(val []string) error {
+	out := make([]float64, len(val))
+	for i, d := range val {
+		var err error
+		out[i], err = s.fromString(d)
+		if err != nil {
+			return err
+		}
+	}
+	*s.value = out
+	return nil
+}
+
+func (s *float64SliceValue) GetSlice() []string {
+	out := make([]string, len(*s.value))
+	for i, d := range *s.value {
+		out[i] = s.toString(d)
+	}
+	return out
+}
+
+func float64SliceConv(val string) (interface{}, error) {
+	val = strings.Trim(val, "[]")
+	// Empty string would cause a slice with one (empty) entry
+	if len(val) == 0 {
+		return []float64{}, nil
+	}
+	ss := strings.Split(val, ",")
+	out := make([]float64, len(ss))
+	for i, d := range ss {
+		var err error
+		out[i], err = strconv.ParseFloat(d, 64)
+		if err != nil {
+			return nil, err
+		}
+
+	}
+	return out, nil
+}
+
+// GetFloat64Slice return the []float64 value of a flag with the given name
+func (f *FlagSet) GetFloat64Slice(name string) ([]float64, error) {
+	val, err := f.getFlagType(name, "float64Slice", float64SliceConv)
+	if err != nil {
+		return []float64{}, err
+	}
+	return val.([]float64), nil
+}
+
+// Float64SliceVar defines a float64Slice 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.
+func (f *FlagSet) Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
+	f.VarP(newFloat64SliceValue(value, p), name, "", usage)
+}
+
+// Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
+	f.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float64SliceVar 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.
+func Float64SliceVar(p *[]float64, name string, value []float64, usage string) {
+	CommandLine.VarP(newFloat64SliceValue(value, p), name, "", usage)
+}
+
+// Float64SliceVarP is like Float64SliceVar, but accepts a shorthand letter that can be used after a single dash.
+func Float64SliceVarP(p *[]float64, name, shorthand string, value []float64, usage string) {
+	CommandLine.VarP(newFloat64SliceValue(value, p), name, shorthand, usage)
+}
+
+// Float64Slice defines a []float64 flag with specified name, default value, and usage string.
+// The return value is the address of a []float64 variable that stores the value of the flag.
+func (f *FlagSet) Float64Slice(name string, value []float64, usage string) *[]float64 {
+	p := []float64{}
+	f.Float64SliceVarP(&p, name, "", value, usage)
+	return &p
+}
+
+// Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
+func (f *FlagSet) Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
+	p := []float64{}
+	f.Float64SliceVarP(&p, name, shorthand, value, usage)
+	return &p
+}
+
+// Float64Slice defines a []float64 flag with specified name, default value, and usage string.
+// The return value is the address of a []float64 variable that stores the value of the flag.
+func Float64Slice(name string, value []float64, usage string) *[]float64 {
+	return CommandLine.Float64SliceP(name, "", value, usage)
+}
+
+// Float64SliceP is like Float64Slice, but accepts a shorthand letter that can be used after a single dash.
+func Float64SliceP(name, shorthand string, value []float64, usage string) *[]float64 {
+	return CommandLine.Float64SliceP(name, shorthand, value, usage)
+}