| /* |
| * 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 |
| } |