github.com/EagleQL/Xray-core@v1.4.3/common/platform/filesystem/file.go (about)

     1  package filesystem
     2  
     3  import (
     4  	"io"
     5  	"os"
     6  
     7  	"github.com/xtls/xray-core/common/buf"
     8  	"github.com/xtls/xray-core/common/platform"
     9  )
    10  
    11  type FileReaderFunc func(path string) (io.ReadCloser, error)
    12  
    13  var NewFileReader FileReaderFunc = func(path string) (io.ReadCloser, error) {
    14  	return os.Open(path)
    15  }
    16  
    17  func ReadFile(path string) ([]byte, error) {
    18  	reader, err := NewFileReader(path)
    19  	if err != nil {
    20  		return nil, err
    21  	}
    22  	defer reader.Close()
    23  
    24  	return buf.ReadAllToBytes(reader)
    25  }
    26  
    27  func ReadAsset(file string) ([]byte, error) {
    28  	return ReadFile(platform.GetAssetLocation(file))
    29  }
    30  
    31  func CopyFile(dst string, src string) error {
    32  	bytes, err := ReadFile(src)
    33  	if err != nil {
    34  		return err
    35  	}
    36  	f, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY, 0644)
    37  	if err != nil {
    38  		return err
    39  	}
    40  	defer f.Close()
    41  
    42  	_, err = f.Write(bytes)
    43  	return err
    44  }