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run.go
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run.go
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package run
import (
"fmt"
"os"
"os/exec"
"path/filepath"
"strings"
"github.com/AlecAivazis/survey/v2"
"github.com/spf13/cobra"
)
// CmdRun run project command.
var CmdRun = &cobra.Command{
Use: "run",
Short: "Run project",
Long: "Run project. Example: kratos run",
Run: Run,
}
var targetDir string
func init() {
CmdRun.Flags().StringVarP(&targetDir, "work", "w", "", "target working directory")
}
// Run run project.
func Run(cmd *cobra.Command, args []string) {
var dir string
cmdArgs, programArgs := splitArgs(cmd, args)
if len(cmdArgs) > 0 {
dir = cmdArgs[0]
}
base, err := os.Getwd()
if err != nil {
fmt.Fprintf(os.Stderr, "\033[31mERROR: %s\033[m\n", err)
return
}
if dir == "" {
// find the directory containing the cmd/*
cmdPath, err := findCMD(base)
if err != nil {
fmt.Fprintf(os.Stderr, "\033[31mERROR: %s\033[m\n", err)
return
}
switch len(cmdPath) {
case 0:
fmt.Fprintf(os.Stderr, "\033[31mERROR: %s\033[m\n", "The cmd directory cannot be found in the current directory")
return
case 1:
for _, v := range cmdPath {
dir = v
}
default:
var cmdPaths []string
for k := range cmdPath {
cmdPaths = append(cmdPaths, k)
}
prompt := &survey.Select{
Message: "Which directory do you want to run?",
Options: cmdPaths,
PageSize: 10,
}
e := survey.AskOne(prompt, &dir)
if e != nil || dir == "" {
return
}
dir = cmdPath[dir]
}
}
fd := exec.Command("go", append([]string{"run", dir}, programArgs...)...)
fd.Stdout = os.Stdout
fd.Stderr = os.Stderr
fd.Dir = dir
changeWorkingDirectory(fd, targetDir)
if err := fd.Run(); err != nil {
fmt.Fprintf(os.Stderr, "\033[31mERROR: %s\033[m\n", err.Error())
return
}
}
func splitArgs(cmd *cobra.Command, args []string) (cmdArgs, programArgs []string) {
dashAt := cmd.ArgsLenAtDash()
if dashAt >= 0 {
return args[:dashAt], args[dashAt:]
}
return args, []string{}
}
func findCMD(base string) (map[string]string, error) {
wd, err := os.Getwd()
if err != nil {
return nil, err
}
if !strings.HasSuffix(wd, "/") {
wd += "/"
}
var root bool
next := func(dir string) (map[string]string, error) {
cmdPath := make(map[string]string)
err := filepath.Walk(dir, func(walkPath string, info os.FileInfo, err error) error {
// multi level directory is not allowed under the cmdPath directory, so it is judged that the path ends with cmdPath.
if strings.HasSuffix(walkPath, "cmd") {
paths, err := os.ReadDir(walkPath)
if err != nil {
return err
}
for _, fileInfo := range paths {
if fileInfo.IsDir() {
abs := filepath.Join(walkPath, fileInfo.Name())
cmdPath[strings.TrimPrefix(abs, wd)] = abs
}
}
return nil
}
if info.Name() == "go.mod" {
root = true
}
return nil
})
return cmdPath, err
}
for i := 0; i < 5; i++ {
tmp := base
cmd, err := next(tmp)
if err != nil {
return nil, err
}
if len(cmd) > 0 {
return cmd, nil
}
if root {
break
}
_ = filepath.Join(base, "..")
}
return map[string]string{"": base}, nil
}
func changeWorkingDirectory(cmd *exec.Cmd, targetDir string) {
targetDir = strings.TrimSpace(targetDir)
if targetDir != "" {
cmd.Dir = targetDir
}
}