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Merge pull request #164 from blackpiglet/replace_busybox_0.3
[cherry-pick][release-0.3]Replace busybox with internal copy binary.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| Replace busybox with internal copy binary |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,42 @@ | ||
| package main | ||
|
|
||
| import ( | ||
| "errors" | ||
| "fmt" | ||
| "io" | ||
| "os" | ||
| ) | ||
|
|
||
| func main() { | ||
| if len(os.Args) != 3 { | ||
| fmt.Println( | ||
| `Error: This command requires two arguments. | ||
| Usage: cp-plugin src dst`) | ||
| os.Exit(1) | ||
| } | ||
| src, dst := os.Args[1], os.Args[2] | ||
| fmt.Printf("Copying %s to %s ... ", src, dst) | ||
| srcFile, err := os.Open(src) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| defer srcFile.Close() | ||
| if _, err := os.Stat(dst); errors.Is(err, os.ErrNotExist) { | ||
| _, err = os.Create(dst) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| } | ||
| dstFile, err := os.OpenFile(dst, os.O_WRONLY, 0755) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| defer dstFile.Close() | ||
| buf := make([]byte, 1024*128) | ||
| _, err = io.CopyBuffer(dstFile, srcFile, buf) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| os.Chmod(dst, 0755) | ||
| fmt.Println("done.") | ||
| } |