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add a simple 'autofix' - most of the users need just an update
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,193 @@ | ||
| package iris | ||
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| import ( | ||
| "archive/zip" | ||
| "bytes" | ||
| stdContext "context" | ||
| "fmt" | ||
| "io" | ||
| "io/ioutil" | ||
| "os" | ||
| "os/exec" | ||
| "path/filepath" | ||
| "strings" | ||
| "time" | ||
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| "github.com/kataras/golog" | ||
| ) | ||
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| const defaultModuleName = "app" | ||
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| // simple function does not uses AST, it simply replaces import paths, | ||
| // creates a go.mod file if not exists and then run the `go mod tidy` | ||
| // command to remove old dependencies and install the new ones. | ||
| // It does NOT replaces breaking changes. | ||
| // The developer SHOULD visit the changelog(HISTORY.md) in order to learn | ||
| // everything about the new features and any breaking changes that comes with it. | ||
| func tryFix() error { | ||
| wdir, err := filepath.Abs(".") // should return the current directory (on both go run & executable). | ||
| if err != nil { | ||
| return fmt.Errorf("can not resolve current working directory: %w", err) | ||
| } | ||
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| // First of all, backup the current project, | ||
| // so any changes can be reverted by the end developer. | ||
| backupDest := wdir + "_irisbckp.zip" | ||
| golog.Infof("Backup <%s> to <%s>", wdir, backupDest) | ||
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| err = zipDir(wdir, backupDest) | ||
| if err != nil { | ||
| return fmt.Errorf("backup dir: %w", err) | ||
| } | ||
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| // go module. | ||
| goModFile := filepath.Join(wdir, "go.mod") | ||
| if !fileExists(goModFile) { | ||
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| golog.Warnf("Project is not a go module. Executing <go.mod init app>") | ||
| f, err := os.Create(goModFile) | ||
| if err != nil { | ||
| return fmt.Errorf("go.mod: %w", os.ErrNotExist) | ||
| } | ||
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| fmt.Fprintf(f, "module %s\ngo 1.15\n", defaultModuleName) | ||
| f.Close() | ||
| } | ||
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| // contnets replacements. | ||
| golog.Infof("Updating...") // note: we will not replace GOPATH project paths. | ||
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| err = replaceDirContents(wdir, map[string]string{ | ||
| `"github.com/kataras/iris`: `"github.com/kataras/iris/v12`, | ||
| // Note: we could use | ||
| // regexp's FindAllSubmatch, take the dir part and replace | ||
| // any HandleDir and e.t.c, but we are not going to do this. | ||
| // Look the comment of the tryFix() function. | ||
| }) | ||
| if err != nil { | ||
| return fmt.Errorf("replace import paths: %w", err) | ||
| } | ||
|
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| commands := []string{ | ||
| // "go clean --modcache", | ||
| "go env -w GOPROXY=https://goproxy.cn,https://gocenter.io,https://goproxy.io,direct", | ||
| "go mod tidy", | ||
| } | ||
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| for _, c := range commands { | ||
| if err = runCmd(wdir, c); err != nil { | ||
| // print out the command, especially | ||
| // with go env -w the user should know it. | ||
| // We use that because many of our users are living in China, | ||
| // which the default goproxy is blocked). | ||
| golog.Infof("$ %s", c) | ||
| return fmt.Errorf("command <%s>: %w", c, err) | ||
| } | ||
| } | ||
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| return nil | ||
| } | ||
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| func fileExists(path string) bool { | ||
| stat, err := os.Stat(path) | ||
| if err != nil { | ||
| return os.IsExist(err) | ||
| } | ||
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| return !stat.IsDir() && stat.Mode().IsRegular() | ||
| } | ||
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| func runCmd(wdir, c string) error { | ||
| ctx, cancel := stdContext.WithTimeout(stdContext.Background(), 2*time.Minute) | ||
| defer cancel() | ||
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| parts := strings.Split(c, " ") | ||
| name, args := parts[0], parts[1:] | ||
| cmd := exec.CommandContext(ctx, name, args...) | ||
| // cmd.Path = wdir | ||
| cmd.Stdout = os.Stdout | ||
| cmd.Stderr = os.Stderr | ||
| return cmd.Run() | ||
| } | ||
|
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| // zipDir zips a directory, recursively. | ||
| // It accepts a source directory and a destination zip file. | ||
| func zipDir(src, dest string) error { | ||
| folderName := filepath.Base(src) | ||
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| file, err := os.Create(dest) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
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| w := zip.NewWriter(file) | ||
| defer w.Close() | ||
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| walkFunc := func(path string, info os.FileInfo, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if info.IsDir() { | ||
| return nil | ||
| } | ||
| file, err := os.Open(path) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
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| relPath := filepath.Join(folderName, strings.TrimPrefix(path, src)) | ||
| f, err := w.Create(relPath) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
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| _, err = io.Copy(f, file) | ||
| return err | ||
| } | ||
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| return filepath.Walk(src, walkFunc) | ||
| } | ||
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| func replaceDirContents(target string, replacements map[string]string) error { | ||
| walkFunc := func(path string, info os.FileInfo, err error) error { | ||
| if err != nil { | ||
| return err | ||
| } | ||
| if info.IsDir() || !info.Mode().IsRegular() { | ||
| return nil | ||
| } | ||
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| file, err := os.OpenFile(path, os.O_RDWR, 0666) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| defer file.Close() | ||
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| contents, ioErr := ioutil.ReadAll(file) | ||
| if ioErr != nil { | ||
| return ioErr | ||
| } | ||
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| replaced := false | ||
| for oldContent, newContent := range replacements { | ||
| newContents := bytes.ReplaceAll(contents, []byte(oldContent), []byte(newContent)) | ||
| if len(newContents) > 0 { | ||
| replaced = true | ||
| contents = newContents[0:] | ||
| } | ||
| } | ||
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| if replaced { | ||
| file.Truncate(0) | ||
| file.Seek(0, 0) | ||
| _, err = file.Write(contents) | ||
| return err | ||
| } | ||
|
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| return nil | ||
| } | ||
|
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| return filepath.Walk(target, walkFunc) | ||
| } |
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