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// 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"
}
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