func Format(in, out string) (err error) {
var fout io.WriteCloser
var fin io.ReadCloser
var ast parser.AST
// Open input stream.
if in == Stdin {
fin = _stdin
} else {
fin, err = os.Open(in)
if err != nil {
return
}
}
// Parse source into AST.
err = ast.Parse(fin, in)
fin.Close()
if err != nil {
return
}
if *strip {
StripComments(&ast)
}
// Open output stream.
if out == Stdout {
fout = _stdout
} else {
fout, err = os.Create(out)
if err != nil {
return
}
defer fout.Close()
}
// Write source.
sw := util.NewSourceWriter(fout, &ast)
sw.Tabs = *tabs
sw.TabWidth = *tabwidth
sw.Comments = !*strip
sw.Write()
return
}
func writeSource(ast *parser.AST, file string, doast bool) (err error) {
var w io.Writer
if len(file) == 0 {
w = os.Stdout
} else {
fd, err := os.Create(file)
if err != nil {
return err
}
defer fd.Close()
w = fd
}
if doast {
util.NewAstWriter(w, ast).Write()
} else {
util.NewSourceWriter(w, ast).Write()
}
return
}