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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"
"fmt"
flag "github.com/spf13/pflag"
"io"
"os"
"path"
"path/filepath"
"strings"
)
var (
flags struct {
r bool
v bool
i bool
f bool
}
cmd = "rm [-Rrvif] file..."
)
func init() {
defUsage := flag.Usage
flag.Usage = func() {
os.Args[0] = cmd
defUsage()
}
flag.BoolVarP(&flags.i, "interactive", "i", false, "Interactive mode.")
flag.BoolVarP(&flags.v, "verbose", "v", false, "Verbose mode.")
flag.BoolVarP(&flags.r, "recursive", "r", false, "remove hierarchies")
flag.BoolVarP(&flags.r, "RECURSIVE", "R", false, "remove hierarchies")
flag.BoolVarP(&flags.f, "force", "f", false, "Ignore nonexistent files and never prompt")
}
func rm(stdin io.Reader, files []string) error {
f := os.Remove
if flags.r {
f = os.RemoveAll
}
if flags.f {
flags.i = false
}
workingPath, err := os.Getwd()
if err != nil {
return err
}
input := bufio.NewReader(stdin)
for _, file := range files {
if flags.i {
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 flags.f && os.IsNotExist(err) {
continue
}
return err
}
if flags.v {
toRemove := file
if !path.IsAbs(file) {
toRemove = filepath.Join(workingPath, file)
}
fmt.Printf("removed '%v'\n", toRemove)
}
}
return nil
}
func main() {
flag.Parse()
if flag.NArg() < 1 {
flag.Usage()
os.Exit(1)
}
if err := rm(os.Stdin, flag.Args()); err != nil {
fmt.Fprintf(os.Stderr, "%v\n", err)
os.Exit(1)
}
}