--- /dev/null
+// The gorename command performs precise type-safe renaming of
+// identifiers in Go source code.
+//
+// Run with -help for usage information, or view the Usage constant in
+// package golang.org/x/tools/refactor/rename, which contains most of
+// the implementation.
+//
+package main // import "golang.org/x/tools/cmd/gorename"
+
+import (
+ "flag"
+ "fmt"
+ "go/build"
+ "log"
+ "os"
+
+ "golang.org/x/tools/go/buildutil"
+ "golang.org/x/tools/refactor/rename"
+)
+
+var (
+ offsetFlag = flag.String("offset", "", "file and byte offset of identifier to be renamed, e.g. 'file.go:#123'. For use by editors.")
+ fromFlag = flag.String("from", "", "identifier to be renamed; see -help for formats")
+ toFlag = flag.String("to", "", "new name for identifier")
+ helpFlag = flag.Bool("help", false, "show usage message")
+)
+
+func init() {
+ flag.Var((*buildutil.TagsFlag)(&build.Default.BuildTags), "tags", buildutil.TagsFlagDoc)
+ flag.BoolVar(&rename.Force, "force", false, "proceed, even if conflicts were reported")
+ flag.BoolVar(&rename.Verbose, "v", false, "print verbose information")
+ flag.BoolVar(&rename.Diff, "d", false, "display diffs instead of rewriting files")
+ flag.StringVar(&rename.DiffCmd, "diffcmd", "diff", "diff command invoked when using -d")
+}
+
+func main() {
+ log.SetPrefix("gorename: ")
+ log.SetFlags(0)
+ flag.Parse()
+ if len(flag.Args()) > 0 {
+ log.Fatal("surplus arguments")
+ }
+
+ if *helpFlag || (*offsetFlag == "" && *fromFlag == "" && *toFlag == "") {
+ fmt.Println(rename.Usage)
+ return
+ }
+
+ if err := rename.Main(&build.Default, *offsetFlag, *fromFlag, *toFlag); err != nil {
+ if err != rename.ConflictError {
+ log.Fatal(err)
+ }
+ os.Exit(1)
+ }
+}