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// Copyright (C) 2019-2023 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package cmdutil
import (
"fmt"
"strings"
)
// CobraStringValue is similar to spf13.pflag.stringValue but enforces allowed values
type CobraStringValue struct {
value string
allowed []string
isSet bool
}
// MakeCobraStringValue creates a string value (satisfying spf13/pflag.Value interface)
// for a limited number of valid options
func MakeCobraStringValue(value string, others []string) *CobraStringValue {
c := new(CobraStringValue)
c.value = value
c.allowed = make([]string, 0, len(others)+1)
c.allowed = append(c.allowed, value)
c.allowed = append(c.allowed, others...)
return c
}
func (c *CobraStringValue) String() string { return c.value }
// Type returns the value type as a string
func (c *CobraStringValue) Type() string { return "string" }
// IsSet returns a boolean flag indicating of the value was changed from defaults
func (c *CobraStringValue) IsSet() bool { return c.isSet }
// Set sets a value and fails if it is not allowed
func (c *CobraStringValue) Set(other string) error {
for _, s := range c.allowed {
if other == s {
c.value = other
c.isSet = true
return nil
}
}
return fmt.Errorf("value %s not allowed", other)
}
// AllowedString returns a comma-separated string of allowed values
func (c *CobraStringValue) AllowedString() string {
return strings.Join(c.allowed, ", ")
}
// CobraStringSliceValue is similar to spf13.pflag.stringSliceValue but enforces allowed values
type CobraStringSliceValue struct {
value []string
allowed []string
allowedMap map[string]int
isSet bool
}
// MakeCobraStringSliceValue creates a string slice value (satisfying spf13/pflag.Value interface)
// for a limited number of valid options
func MakeCobraStringSliceValue(value *[]string, others []string) *CobraStringSliceValue {
c := new(CobraStringSliceValue)
if value != nil {
c.value = *value
}
// make allowed values by filtering out duplicates and preseve the order
c.allowedMap = make(map[string]int, len(others)+len(c.value))
var dups int
for i, v := range append(c.value, others...) {
if _, ok := c.allowedMap[v]; !ok {
c.allowedMap[v] = i - dups
} else {
dups++
}
}
c.allowed = make([]string, len(c.allowedMap))
for v, i := range c.allowedMap {
c.allowed[i] = v
}
return c
}
func (c *CobraStringSliceValue) String() string { return "[" + strings.Join(c.value, ", ") + "]" }
// Type returns the value type as a string
func (c *CobraStringSliceValue) Type() string { return "stringSlice" }
// IsSet returns a boolean flag indicating of the value was changed from defaults
func (c *CobraStringSliceValue) IsSet() bool { return c.isSet }
// Set sets a value and fails if it is not allowed
func (c *CobraStringSliceValue) Set(values string) error {
others := strings.Split(values, ",")
for _, other := range others {
other = strings.TrimSpace(other)
if _, ok := c.allowedMap[other]; ok {
c.value = append(c.value, other)
c.isSet = true
} else {
return fmt.Errorf("value %s not allowed", other)
}
}
return nil
}
// AllowedString returns a comma-separated string of allowed values
func (c *CobraStringSliceValue) AllowedString() string {
return strings.Join(c.allowed, ", ")
}
// GetSlice returns a current value as a string slice
func (c *CobraStringSliceValue) GetSlice() []string {
return c.value
}
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