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16fb3f6527
etcdctl util, create normalizer of examples in util, add some more examples, change indent of etcdctl from "\t" to " " Signed-off-by: ah8ad3 <ah8ad3@gmail.com>
50 lines
1.3 KiB
Go
50 lines
1.3 KiB
Go
// Copyright 2024 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 util
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import "strings"
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const indentation = " "
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// Normalize normalizes a string:
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// 1. trim the leading and trailing space
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// 2. add an indentation before each line
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func Normalize(s string) string {
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if len(s) == 0 {
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return s
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}
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return normalizer{s}.trim().indent().string
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}
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type normalizer struct {
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string
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}
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func (n normalizer) trim() normalizer {
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n.string = strings.TrimSpace(n.string)
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return n
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}
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func (n normalizer) indent() normalizer {
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indentedLines := []string{}
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for _, line := range strings.Split(n.string, "\n") {
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trimmed := strings.TrimSpace(line)
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indented := indentation + trimmed
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indentedLines = append(indentedLines, indented)
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}
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n.string = strings.Join(indentedLines, "\n")
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return n
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}
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