73 lines
1.6 KiB
Go
73 lines
1.6 KiB
Go
/*
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Copyright (c) 2016-2017 VMware, Inc. All Rights Reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package flags
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import (
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"flag"
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"fmt"
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"strconv"
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)
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// This flag type is internal to stdlib:
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// https://github.com/golang/go/blob/master/src/cmd/internal/obj/flag.go
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type int32Value int32
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func (i *int32Value) Set(s string) error {
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v, err := strconv.ParseInt(s, 0, 32)
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*i = int32Value(v)
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return err
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}
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func (i *int32Value) Get() interface{} {
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return int32(*i)
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}
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func (i *int32Value) String() string {
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return fmt.Sprintf("%v", *i)
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}
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// NewInt32 behaves as flag.IntVar, but using an int32 type.
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func NewInt32(v *int32) flag.Value {
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return (*int32Value)(v)
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}
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type int32ptrValue struct {
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val **int32
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}
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func (i *int32ptrValue) Set(s string) error {
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v, err := strconv.ParseInt(s, 0, 32)
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*i.val = new(int32)
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**i.val = int32(v)
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return err
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}
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func (i *int32ptrValue) Get() interface{} {
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if i.val == nil {
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return -1
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}
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return *i.val
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}
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func (i *int32ptrValue) String() string {
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return fmt.Sprintf("%v", i.Get())
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}
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func NewOptionalInt32(v **int32) flag.Value {
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return &int32ptrValue{val: v}
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}
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