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dex/vendor/google.golang.org/grpc/benchmark/worker/util.go

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2016-10-04 07:28:50 +00:00
/*
* Copyright 2016, Google Inc.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
package main
import (
"log"
"os"
"path/filepath"
)
// abs returns the absolute path the given relative file or directory path,
// relative to the google.golang.org/grpc directory in the user's GOPATH.
// If rel is already absolute, it is returned unmodified.
func abs(rel string) string {
if filepath.IsAbs(rel) {
return rel
}
v, err := goPackagePath("google.golang.org/grpc")
if err != nil {
log.Fatalf("Error finding google.golang.org/grpc/testdata directory: %v", err)
}
return filepath.Join(v, rel)
}
func goPackagePath(pkg string) (path string, err error) {
gp := os.Getenv("GOPATH")
if gp == "" {
return path, os.ErrNotExist
}
for _, p := range filepath.SplitList(gp) {
dir := filepath.Join(p, "src", filepath.FromSlash(pkg))
fi, err := os.Stat(dir)
if os.IsNotExist(err) {
continue
}
if err != nil {
return "", err
}
if !fi.IsDir() {
continue
}
return dir, nil
}
return path, os.ErrNotExist
}