46 lines
1.3 KiB
Go
46 lines
1.3 KiB
Go
// Copyright 2022 The etcd Authors
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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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package flags
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import (
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"flag"
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"strconv"
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)
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type uint32Value uint32
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// NewUint32Value creates an uint32 instance with the provided value.
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func NewUint32Value(v uint32) *uint32Value {
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val := new(uint32Value)
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*val = uint32Value(v)
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return val
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}
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// Set parses a command line uint32 value.
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// Implements "flag.Value" interface.
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func (i *uint32Value) Set(s string) error {
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v, err := strconv.ParseUint(s, 0, 32)
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*i = uint32Value(v)
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return err
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}
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func (i *uint32Value) String() string { return strconv.FormatUint(uint64(*i), 10) }
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// Uint32FromFlag return the uint32 value of a flag with the given name
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func Uint32FromFlag(fs *flag.FlagSet, name string) uint32 {
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val := *fs.Lookup(name).Value.(*uint32Value)
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return uint32(val)
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}
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