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rm.go
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rm.go
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// Copyright 2013-2017 the u-root Authors. All rights reserved
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Delete files.
//
// Synopsis:
//
// rm [-Rrvif] FILE...
//
// Options:
//
// -i: interactive mode
// -v: verbose mode
// -R: remove file hierarchies
// -r: equivalent to -R
// -f: ignore nonexistent files and never prompt
package main
import (
"bufio"
"flag"
"fmt"
"io"
"log"
"os"
"path"
"path/filepath"
"strings"
"github.com/u-root/u-root/pkg/uroot/util"
)
var (
interactive = flag.Bool("i", false, "Interactive mode.")
verbose = flag.Bool("v", false, "Verbose mode.")
recursive = flag.Bool("r", false, "equivalent to -R")
r = flag.Bool("R", false, "Recursive, remove hierarchies")
force = flag.Bool("f", false, "Force, ignore nonexistent files and never prompt")
)
const usage = "rm [-Rrvif] file..."
func rm(stdin io.Reader, files []string) error {
if len(files) < 1 {
return fmt.Errorf("%v", usage)
}
f := os.Remove
if *recursive || *r {
f = os.RemoveAll
}
if *force {
*interactive = false
}
workingPath, err := os.Getwd()
if err != nil {
return err
}
input := bufio.NewReader(stdin)
for _, file := range files {
if *interactive {
fmt.Printf("rm: remove '%v'? ", file)
answer, err := input.ReadString('\n')
if err != nil || strings.ToLower(answer)[0] != 'y' {
continue
}
}
if err := f(file); err != nil {
if *force && os.IsNotExist(err) {
continue
}
return err
}
if *verbose {
toRemove := file
if !path.IsAbs(file) {
toRemove = filepath.Join(workingPath, file)
}
fmt.Printf("removed '%v'\n", toRemove)
}
}
return nil
}
func main() {
flag.Usage = util.Usage(flag.Usage, usage)
flag.Parse()
if err := rm(os.Stdin, flag.Args()); err != nil {
log.Fatal(err)
}
}