64 строки
1.5 KiB
Go
64 строки
1.5 KiB
Go
/*
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* Copyright 2017 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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*/
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package testdata
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import (
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"log"
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"os"
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"path/filepath"
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)
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// Path returns the absolute path the given relative file or directory path,
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// relative to the google.golang.org/grpc/testdata directory in the user's GOPATH.
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// If rel is already absolute, it is returned unmodified.
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func Path(rel string) string {
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if filepath.IsAbs(rel) {
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return rel
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}
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v, err := goPackagePath("google.golang.org/grpc/testdata")
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if err != nil {
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log.Fatalf("Error finding google.golang.org/grpc/testdata directory: %v", err)
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}
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return filepath.Join(v, rel)
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}
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func goPackagePath(pkg string) (path string, err error) {
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gp := os.Getenv("GOPATH")
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if gp == "" {
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return path, os.ErrNotExist
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}
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for _, p := range filepath.SplitList(gp) {
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dir := filepath.Join(p, "src", filepath.FromSlash(pkg))
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fi, err := os.Stat(dir)
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if os.IsNotExist(err) {
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continue
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}
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if err != nil {
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return "", err
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}
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if !fi.IsDir() {
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continue
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}
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return dir, nil
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}
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return path, os.ErrNotExist
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}
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