mirror of
https://github.com/golang/go
synced 2024-11-20 10:54:49 -07:00
54 lines
1.0 KiB
Go
54 lines
1.0 KiB
Go
|
// Copyright 2009 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 "os";
|
||
|
|
IO "io";
|
||
|
|
Flag "flag";
|
||
|
|
Fmt "fmt";
|
||
|
|
TabWriter "tabwriter";
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
var (
|
||
|
|
tabwidth = Flag.Int("tabwidth", 4, nil, "tab width");
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
func Error(fmt string, params ...) {
|
||
|
|
Fmt.printf(fmt, params);
|
||
|
|
sys.exit(1);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
func Untab(name string, src *OS.FD, dst *TabWriter.TabWriter) {
|
||
|
|
n, err := IO.Copyn(src, dst, 2e9 /* inf */); // TODO use Copy
|
||
|
|
if err != nil {
|
||
|
|
Error("error while processing %s (%v)", name, err);
|
||
|
|
}
|
||
|
|
//dst.Flush();
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
Flag.Parse();
|
||
|
|
dst := TabWriter.MakeTabWriter(OS.Stdout, int(tabwidth.IVal()));
|
||
|
|
if Flag.NArg() > 0 {
|
||
|
|
for i := 0; i < Flag.NArg(); i++ {
|
||
|
|
name := Flag.Arg(i);
|
||
|
|
src, err := OS.Open(name, OS.O_RDONLY, 0);
|
||
|
|
if err != nil {
|
||
|
|
Error("could not open %s (%v)\n", name, err);
|
||
|
|
}
|
||
|
|
Untab(name, src, dst);
|
||
|
|
src.Close(); // ignore errors
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
// no files => use stdin
|
||
|
|
Untab("/dev/stdin", OS.Stdin, dst);
|
||
|
|
}
|
||
|
|
}
|