139 lines
3.1 KiB
Go
139 lines
3.1 KiB
Go
/*
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* Copyright 2022 CloudWeGo 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 util
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import (
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"bytes"
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"fmt"
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"go/build"
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"io/ioutil"
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"os"
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"os/exec"
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"path/filepath"
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"regexp"
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"strings"
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"github.com/cloudwego/hertz/cmd/hz/meta"
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)
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func GetGOPATH() (gopath string, err error) {
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ps := filepath.SplitList(os.Getenv("GOPATH"))
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if len(ps) > 0 {
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gopath = ps[0]
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}
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if gopath == "" {
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cmd := exec.Command("go", "env", "GOPATH")
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var out bytes.Buffer
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cmd.Stderr = &out
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cmd.Stdout = &out
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if err := cmd.Run(); err == nil {
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gopath = strings.Trim(out.String(), " \t\n\r")
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}
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}
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if gopath == "" {
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ps := GetBuildGoPaths()
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if len(ps) > 0 {
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gopath = ps[0]
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}
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}
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isExist, err := PathExist(gopath)
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if !isExist {
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return "", err
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}
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return strings.Replace(gopath, "/", string(os.PathSeparator), -1), nil
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}
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// GetBuildGoPaths returns the list of Go path directories.
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func GetBuildGoPaths() []string {
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var all []string
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for _, p := range filepath.SplitList(build.Default.GOPATH) {
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if p == "" || p == build.Default.GOROOT {
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continue
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}
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if strings.HasPrefix(p, "~") {
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continue
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}
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all = append(all, p)
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}
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for k, v := range all {
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if strings.HasSuffix(v, "/") || strings.HasSuffix(v, string(os.PathSeparator)) {
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v = v[:len(v)-1]
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}
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all[k] = v
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}
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return all
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}
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var goModReg = regexp.MustCompile(`^\s*module\s+(\S+)\s*`)
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// SearchGoMod searches go.mod from the given directory (which must be an absolute path) to
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// the root directory. When the go.mod is found, its module name and path will be returned.
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func SearchGoMod(cwd string, recurse bool) (moduleName, path string, found bool) {
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for {
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path = filepath.Join(cwd, "go.mod")
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data, err := ioutil.ReadFile(path)
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if err == nil {
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for _, line := range strings.Split(string(data), "\n") {
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m := goModReg.FindStringSubmatch(line)
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if m != nil {
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return m[1], cwd, true
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}
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}
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return fmt.Sprintf("<module name not found in '%s'>", path), path, true
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}
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if !os.IsNotExist(err) {
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return
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}
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if !recurse {
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break
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}
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cwd = filepath.Dir(cwd)
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// the root directory will return itself by using "filepath.Dir()"; to prevent dead loops, so jump out
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if cwd == filepath.Dir(cwd) {
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break
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}
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}
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return
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}
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func InitGoMod(module string) error {
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isExist, err := PathExist("go.mod")
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if err != nil {
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return err
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}
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if isExist {
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return nil
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}
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gg, err := exec.LookPath("go")
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if err != nil {
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return err
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}
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cmd := &exec.Cmd{
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Path: gg,
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Args: []string{"go", "mod", "init", module},
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Stdin: os.Stdin,
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Stdout: os.Stdout,
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Stderr: os.Stderr,
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}
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return cmd.Run()
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}
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func IsWindows() bool {
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return meta.SysType == meta.WindowsOS
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}
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