func fmtFile(fname string) (bool, error) {
input, e := ioutil.ReadFile(fname)
if e != nil {
return false, e
}
f, rec, es := parse.File(fname, bytes.NewBuffer(input), false)
if es != nil {
return false, fmt.Errorf("%d errors found at parsing", len(es))
}
var output bytes.Buffer
gfmt.FprintFile(&output, f, rec)
if bytes.Compare(input, output.Bytes()) == 0 {
return false, nil
}
tempfile, e := ioutil.TempFile(tempDir, "e8fmt")
if e != nil {
return false, e
}
if _, e := tempfile.Write(output.Bytes()); e != nil {
return false, e
}
if e := tempfile.Close(); e != nil {
return false, e
}
return true, os.Rename(tempfile.Name(), fname)
}
func main() {
flag.Parse()
args := flag.Args()
if len(args) != 1 {
exit(errors.New("need exactly one input input file"))
}
fname := args[0]
input, e := ioutil.ReadFile(fname)
if e != nil {
exit(e)
}
if *bare {
if *parseAST {
stmts, es := parse.Stmts(fname, bytes.NewBuffer(input))
printErrs(es)
gfmt.FprintStmts(os.Stdout, stmts)
} else {
bs, es, irLog := g8.CompileBareFunc(fname, string(input))
printErrs(es)
printIRLog(irLog, *ir)
runImage(bs, *dasm, *ncycle)
}
} else {
if *parseAST {
f, rec, es := parse.File(fname, bytes.NewBuffer(input), true)
printErrs(es)
gfmt.FprintFile(os.Stdout, f, rec)
} else {
bs, es, irLog := g8.CompileSingle(fname, string(input), *golike)
printErrs(es)
printIRLog(irLog, *ir)
runImage(bs, *dasm, *ncycle)
}
}
}