func ExampleWalk() {
in := `echo $foo "and $bar"`
f, err := syntax.Parse([]byte(in), "", 0)
if err != nil {
return
}
syntax.Walk(paramUpper{}, f)
syntax.Fprint(os.Stdout, f)
// Output: echo $FOO "and $BAR"
}
func Example() {
in := "{ foo;bar; }"
f, err := syntax.Parse([]byte(in), "", 0)
if err != nil {
return
}
syntax.Fprint(os.Stdout, f)
// Output:
// {
// foo
// bar
// }
}
func formatStdin() error {
if *write || *list {
return fmt.Errorf("-w and -l can only be used on files")
}
readBuf.Reset()
if _, err := io.Copy(&readBuf, os.Stdin); err != nil {
return err
}
src := readBuf.Bytes()
prog, err := syntax.Parse(src, "", parseMode)
if err != nil {
return err
}
return printConfig.Fprint(out, prog)
}
func formatPath(path string, checkShebang bool) error {
openMode := os.O_RDONLY
if *write {
openMode = os.O_RDWR
}
f, err := os.OpenFile(path, openMode, 0)
if err != nil {
return err
}
defer f.Close()
readBuf.Reset()
if _, err := io.Copy(&readBuf, f); err != nil {
return err
}
src := readBuf.Bytes()
if checkShebang && !validShebang.Match(src[:32]) {
return nil
}
prog, err := syntax.Parse(src, path, parseMode)
if err != nil {
return err
}
writeBuf.Reset()
printConfig.Fprint(&writeBuf, prog)
res := writeBuf.Bytes()
if !bytes.Equal(src, res) {
if *list {
fmt.Fprintln(out, path)
}
if *write {
if err := empty(f); err != nil {
return err
}
if _, err := f.Write(res); err != nil {
return err
}
}
}
if !*list && !*write {
if _, err := out.Write(res); err != nil {
return err
}
}
return nil
}