mirror of https://github.com/grpc/grpc-go.git
48 lines
1.4 KiB
Go
48 lines
1.4 KiB
Go
/*
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*
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* Copyright 2021 gRPC 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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*/
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package bootstrap
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import (
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"net/url"
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"strings"
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)
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// PopulateResourceTemplate populates the given template using the target
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// string. "%s", if exists in the template, will be replaced with target.
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//
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// If the template starts with "xdstp:", the replaced string will be %-encoded.
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// But note that "/" is not percent encoded.
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func PopulateResourceTemplate(template, target string) string {
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if !strings.Contains(template, "%s") {
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return template
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}
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if strings.HasPrefix(template, "xdstp:") {
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target = percentEncode(target)
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}
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return strings.ReplaceAll(template, "%s", target)
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}
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// percentEncode percent encode t, except for "/". See the tests for examples.
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func percentEncode(t string) string {
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segs := strings.Split(t, "/")
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for i := range segs {
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segs[i] = url.PathEscape(segs[i])
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}
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return strings.Join(segs, "/")
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}
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