text: package pflag
  
  import (
  	"encoding/base64"
  	"encoding/hex"
  	"fmt"
  	"strings"
  )
  
  // BytesHex adapts []byte for use as a flag. Value of flag is HEX encoded
  type bytesHexValue []byte
  
  // String implements pflag.Value.String.
  func (bytesHex bytesHexValue) String() string {
  	return fmt.Sprintf("%X", []byte(bytesHex))
  }
  
  // Set implements pflag.Value.Set.
  func (bytesHex *bytesHexValue) Set(value string) error {
  	bin, err := hex.DecodeString(strings.TrimSpace(value))
  
  	if err != nil {
  		return err
  	}
  
  	*bytesHex = bin
  
  	return nil
  }
  
  // Type implements pflag.Value.Type.
  func (*bytesHexValue) Type() string {
  	return "bytesHex"
  }
  
  func newBytesHexValue(val []byte, p *[]byte) *bytesHexValue {
  	*p = val
  	return (*bytesHexValue)(p)
  }
  
  func bytesHexConv(sval string) (interface{}, error) {
  
  	bin, err := hex.DecodeString(sval)
  
  	if err == nil {
  		return bin, nil
  	}
  
  	return nil, fmt.Errorf("invalid string being converted to Bytes: %s %s", sval, err)
  }
  
  // GetBytesHex return the []byte value of a flag with the given name
  func (f *FlagSet) GetBytesHex(name string) ([]byte, error) {
  	val, err := f.getFlagType(name, "bytesHex", bytesHexConv)
  
  	if err != nil {
  		return []byte{}, err
  	}
  
  	return val.([]byte), nil
  }
  
  // BytesHexVar defines an []byte flag with specified name, default value, and usage string.
  // The argument p points to an []byte variable in which to store the value of the flag.
  func (f *FlagSet) BytesHexVar(p *[]byte, name string, value []byte, usage string) {
  	f.VarP(newBytesHexValue(value, p), name, "", usage)
  }
  
  // BytesHexVarP is like BytesHexVar, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) BytesHexVarP(p *[]byte, name, shorthand string, value []byte, usage string) {
  	f.VarP(newBytesHexValue(value, p), name, shorthand, usage)
  }
  
  // BytesHexVar defines an []byte flag with specified name, default value, and usage string.
  // The argument p points to an []byte variable in which to store the value of the flag.
  func BytesHexVar(p *[]byte, name string, value []byte, usage string) {
  	CommandLine.VarP(newBytesHexValue(value, p), name, "", usage)
  }
  
  // BytesHexVarP is like BytesHexVar, but accepts a shorthand letter that can be used after a single dash.
  func BytesHexVarP(p *[]byte, name, shorthand string, value []byte, usage string) {
  	CommandLine.VarP(newBytesHexValue(value, p), name, shorthand, usage)
  }
  
  // BytesHex defines an []byte flag with specified name, default value, and usage string.
  // The return value is the address of an []byte variable that stores the value of the flag.
  func (f *FlagSet) BytesHex(name string, value []byte, usage string) *[]byte {
  	p := new([]byte)
  	f.BytesHexVarP(p, name, "", value, usage)
  	return p
  }
  
  // BytesHexP is like BytesHex, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) BytesHexP(name, shorthand string, value []byte, usage string) *[]byte {
  	p := new([]byte)
  	f.BytesHexVarP(p, name, shorthand, value, usage)
  	return p
  }
  
  // BytesHex defines an []byte flag with specified name, default value, and usage string.
  // The return value is the address of an []byte variable that stores the value of the flag.
  func BytesHex(name string, value []byte, usage string) *[]byte {
  	return CommandLine.BytesHexP(name, "", value, usage)
  }
  
  // BytesHexP is like BytesHex, but accepts a shorthand letter that can be used after a single dash.
  func BytesHexP(name, shorthand string, value []byte, usage string) *[]byte {
  	return CommandLine.BytesHexP(name, shorthand, value, usage)
  }
  
  // BytesBase64 adapts []byte for use as a flag. Value of flag is Base64 encoded
  type bytesBase64Value []byte
  
  // String implements pflag.Value.String.
  func (bytesBase64 bytesBase64Value) String() string {
  	return base64.StdEncoding.EncodeToString([]byte(bytesBase64))
  }
  
  // Set implements pflag.Value.Set.
  func (bytesBase64 *bytesBase64Value) Set(value string) error {
  	bin, err := base64.StdEncoding.DecodeString(strings.TrimSpace(value))
  
  	if err != nil {
  		return err
  	}
  
  	*bytesBase64 = bin
  
  	return nil
  }
  
  // Type implements pflag.Value.Type.
  func (*bytesBase64Value) Type() string {
  	return "bytesBase64"
  }
  
  func newBytesBase64Value(val []byte, p *[]byte) *bytesBase64Value {
  	*p = val
  	return (*bytesBase64Value)(p)
  }
  
  func bytesBase64ValueConv(sval string) (interface{}, error) {
  
  	bin, err := base64.StdEncoding.DecodeString(sval)
  	if err == nil {
  		return bin, nil
  	}
  
  	return nil, fmt.Errorf("invalid string being converted to Bytes: %s %s", sval, err)
  }
  
  // GetBytesBase64 return the []byte value of a flag with the given name
  func (f *FlagSet) GetBytesBase64(name string) ([]byte, error) {
  	val, err := f.getFlagType(name, "bytesBase64", bytesBase64ValueConv)
  
  	if err != nil {
  		return []byte{}, err
  	}
  
  	return val.([]byte), nil
  }
  
  // BytesBase64Var defines an []byte flag with specified name, default value, and usage string.
  // The argument p points to an []byte variable in which to store the value of the flag.
  func (f *FlagSet) BytesBase64Var(p *[]byte, name string, value []byte, usage string) {
  	f.VarP(newBytesBase64Value(value, p), name, "", usage)
  }
  
  // BytesBase64VarP is like BytesBase64Var, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) BytesBase64VarP(p *[]byte, name, shorthand string, value []byte, usage string) {
  	f.VarP(newBytesBase64Value(value, p), name, shorthand, usage)
  }
  
  // BytesBase64Var defines an []byte flag with specified name, default value, and usage string.
  // The argument p points to an []byte variable in which to store the value of the flag.
  func BytesBase64Var(p *[]byte, name string, value []byte, usage string) {
  	CommandLine.VarP(newBytesBase64Value(value, p), name, "", usage)
  }
  
  // BytesBase64VarP is like BytesBase64Var, but accepts a shorthand letter that can be used after a single dash.
  func BytesBase64VarP(p *[]byte, name, shorthand string, value []byte, usage string) {
  	CommandLine.VarP(newBytesBase64Value(value, p), name, shorthand, usage)
  }
  
  // BytesBase64 defines an []byte flag with specified name, default value, and usage string.
  // The return value is the address of an []byte variable that stores the value of the flag.
  func (f *FlagSet) BytesBase64(name string, value []byte, usage string) *[]byte {
  	p := new([]byte)
  	f.BytesBase64VarP(p, name, "", value, usage)
  	return p
  }
  
  // BytesBase64P is like BytesBase64, but accepts a shorthand letter that can be used after a single dash.
  func (f *FlagSet) BytesBase64P(name, shorthand string, value []byte, usage string) *[]byte {
  	p := new([]byte)
  	f.BytesBase64VarP(p, name, shorthand, value, usage)
  	return p
  }
  
  // BytesBase64 defines an []byte flag with specified name, default value, and usage string.
  // The return value is the address of an []byte variable that stores the value of the flag.
  func BytesBase64(name string, value []byte, usage string) *[]byte {
  	return CommandLine.BytesBase64P(name, "", value, usage)
  }
  
  // BytesBase64P is like BytesBase64, but accepts a shorthand letter that can be used after a single dash.
  func BytesBase64P(name, shorthand string, value []byte, usage string) *[]byte {
  	return CommandLine.BytesBase64P(name, shorthand, value, usage)
  }
  