8d73276393
Right now a bizarre error message can occur if an address flag was not set: `wallet contains no account for 'AFmseVrdL9f9oyCzZefL9tG6UbvhPbdYzM'`. This bug is 10x worse if it occures in `transfer` --from flag.
91 lines
1.9 KiB
Go
91 lines
1.9 KiB
Go
package flags
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import (
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"flag"
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"fmt"
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"strings"
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"github.com/nspcc-dev/neo-go/pkg/encoding/address"
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"github.com/nspcc-dev/neo-go/pkg/util"
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"github.com/urfave/cli"
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)
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// Address is a wrapper for Uint160 with flag.Value methods.
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type Address struct {
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IsSet bool
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Value util.Uint160
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}
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// AddressFlag is a flag with type string
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type AddressFlag struct {
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Name string
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Usage string
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Value Address
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}
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var (
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_ flag.Value = (*Address)(nil)
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_ cli.Flag = AddressFlag{}
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)
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// String implements fmt.Stringer interface.
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func (a Address) String() string {
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return address.Uint160ToString(a.Value)
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}
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// Set implements flag.Value interface.
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func (a *Address) Set(s string) error {
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addr, err := address.StringToUint160(s)
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if err != nil {
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return cli.NewExitError(err, 1)
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}
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a.IsSet = true
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a.Value = addr
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return nil
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}
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// Uint160 casts address to Uint160.
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func (a *Address) Uint160() (u util.Uint160) {
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if !a.IsSet {
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// It is a programmer error to call this method without
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// checking if the value was provided.
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panic("address was not set")
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}
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return a.Value
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}
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// IsSet checks if flag was set to a non-default value.
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func (f AddressFlag) IsSet() bool {
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return f.Value.IsSet
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}
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// String returns a readable representation of this value
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// (for usage defaults)
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func (f AddressFlag) String() string {
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var names []string
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eachName(f.Name, func(name string) {
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names = append(names, getNameHelp(name))
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})
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return strings.Join(names, ", ") + "\t" + f.Usage
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}
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func getNameHelp(name string) string {
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if len(name) == 1 {
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return fmt.Sprintf("-%s value", name)
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}
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return fmt.Sprintf("--%s value", name)
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}
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// GetName returns the name of the flag
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func (f AddressFlag) GetName() string {
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return f.Name
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}
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// Apply populates the flag given the flag set and environment
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// Ignores errors
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func (f AddressFlag) Apply(set *flag.FlagSet) {
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eachName(f.Name, func(name string) {
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set.Var(&f.Value, name, f.Usage)
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})
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}
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