v2fly/common/platform/filesystem/file.go

61 lines
1.2 KiB
Go

package filesystem
import (
"io"
"os"
"github.com/v2fly/v2ray-core/v4/common/buf"
"github.com/v2fly/v2ray-core/v4/common/platform"
)
type FileReaderFunc func(path string) (io.ReadCloser, error)
type FileWriterFunc func(path string) (io.WriteCloser, error)
var NewFileReader FileReaderFunc = func(path string) (io.ReadCloser, error) {
return os.Open(path)
}
var NewFileWriter FileWriterFunc = func(path string) (io.WriteCloser, error) {
return os.Create(path)
}
func ReadFile(path string) ([]byte, error) {
reader, err := NewFileReader(path)
if err != nil {
return nil, err
}
defer reader.Close()
return buf.ReadAllToBytes(reader)
}
func WriteFile(path string, payload []byte) error {
writer, err := NewFileWriter(path)
if err != nil {
return err
}
defer writer.Close()
return buf.WriteAllBytes(writer, payload)
}
func ReadAsset(file string) ([]byte, error) {
return ReadFile(platform.GetAssetLocation(file))
}
func CopyFile(dst string, src string) error {
bytes, err := ReadFile(src)
if err != nil {
return err
}
f, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY, 0644)
if err != nil {
return err
}
defer f.Close()
_, err = f.Write(bytes)
return err
}