| // Copyright 2011 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package main |
| |
| import ( |
| "os" |
| "path/filepath" |
| ) |
| |
| func init() { |
| addBuildFlagsNX(cmdFmt) |
| } |
| |
| var cmdFmt = &Command{ |
| Run: runFmt, |
| UsageLine: "fmt [-n] [-x] [packages]", |
| Short: "run gofmt on package sources", |
| Long: ` |
| Fmt runs the command 'gofmt -l -w' on the packages named |
| by the import paths. It prints the names of the files that are modified. |
| |
| For more about gofmt, see 'go doc cmd/gofmt'. |
| For more about specifying packages, see 'go help packages'. |
| |
| The -n flag prints commands that would be executed. |
| The -x flag prints commands as they are executed. |
| |
| To run gofmt with specific options, run gofmt itself. |
| |
| See also: go fix, go vet. |
| `, |
| } |
| |
| func runFmt(cmd *Command, args []string) { |
| gofmt := gofmtPath() |
| for _, pkg := range packages(args) { |
| // Use pkg.gofiles instead of pkg.Dir so that |
| // the command only applies to this package, |
| // not to packages in subdirectories. |
| run(stringList(gofmt, "-l", "-w", relPaths(pkg.allgofiles))) |
| } |
| } |
| |
| func gofmtPath() string { |
| gofmt := "gofmt" |
| if toolIsWindows { |
| gofmt += toolWindowsExtension |
| } |
| |
| gofmtPath := filepath.Join(gobin, gofmt) |
| if _, err := os.Stat(gofmtPath); err == nil { |
| return gofmtPath |
| } |
| |
| gofmtPath = filepath.Join(goroot, "bin", gofmt) |
| if _, err := os.Stat(gofmtPath); err == nil { |
| return gofmtPath |
| } |
| |
| // fallback to looking for gofmt in $PATH |
| return "gofmt" |
| } |