github.com/powerman/golang-tools@v0.1.11-0.20220410185822-5ad214d8d803/go/packages/packagestest/gopath.go (about)

     1  // Copyright 2018 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package packagestest
     6  
     7  import (
     8  	"path"
     9  	"path/filepath"
    10  )
    11  
    12  // GOPATH is the exporter that produces GOPATH layouts.
    13  // Each "module" is put in it's own GOPATH entry to help test complex cases.
    14  // Given the two files
    15  //     golang.org/repoa#a/a.go
    16  //     golang.org/repob#b/b.go
    17  // You would get the directory layout
    18  //     /sometemporarydirectory
    19  //     ├── repoa
    20  //     │   └── src
    21  //     │       └── golang.org
    22  //     │           └── repoa
    23  //     │               └── a
    24  //     │                   └── a.go
    25  //     └── repob
    26  //         └── src
    27  //             └── golang.org
    28  //                 └── repob
    29  //                     └── b
    30  //                         └── b.go
    31  // GOPATH would be set to
    32  //     /sometemporarydirectory/repoa;/sometemporarydirectory/repob
    33  // and the working directory would be
    34  //     /sometemporarydirectory/repoa/src
    35  var GOPATH = gopath{}
    36  
    37  func init() {
    38  	All = append(All, GOPATH)
    39  }
    40  
    41  type gopath struct{}
    42  
    43  func (gopath) Name() string {
    44  	return "GOPATH"
    45  }
    46  
    47  func (gopath) Filename(exported *Exported, module, fragment string) string {
    48  	return filepath.Join(gopathDir(exported, module), "src", module, fragment)
    49  }
    50  
    51  func (gopath) Finalize(exported *Exported) error {
    52  	exported.Config.Env = append(exported.Config.Env, "GO111MODULE=off")
    53  	gopath := ""
    54  	for module := range exported.written {
    55  		if gopath != "" {
    56  			gopath += string(filepath.ListSeparator)
    57  		}
    58  		dir := gopathDir(exported, module)
    59  		gopath += dir
    60  		if module == exported.primary {
    61  			exported.Config.Dir = filepath.Join(dir, "src")
    62  		}
    63  	}
    64  	exported.Config.Env = append(exported.Config.Env, "GOPATH="+gopath)
    65  	return nil
    66  }
    67  
    68  func gopathDir(exported *Exported, module string) string {
    69  	dir := path.Base(module)
    70  	if versionSuffixRE.MatchString(dir) {
    71  		dir = path.Base(path.Dir(module)) + "_" + dir
    72  	}
    73  	return filepath.Join(exported.temp, dir)
    74  }