62 lines
1.2 KiB
Go
62 lines
1.2 KiB
Go
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/*
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Copyright (c) 2014 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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"strconv"
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"strings"
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)
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type version []int
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func ParseVersion(s string) (version, error) {
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v := make(version, 0)
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ps := strings.Split(s, ".")
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for _, p := range ps {
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i, err := strconv.Atoi(p)
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if err != nil {
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return nil, err
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}
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v = append(v, i)
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}
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return v, nil
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}
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func (v version) Lte(u version) bool {
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lv := len(v)
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lu := len(u)
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for i := 0; i < lv; i++ {
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// Everything up to here has been equal and v has more elements than u.
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if i >= lu {
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return false
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}
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// Move to next digit if equal.
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if v[i] == u[i] {
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continue
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}
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return v[i] < u[i]
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}
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// Equal.
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return true
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}
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