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func CopyFile(dstName, srcName string) (int64, error) { | |
src, e := os.Open(srcName) | |
if e != nil { | |
return 0, errors.New("Error while opening file for reading. Caused by: " + e.Error()) | |
} | |
var safeSrcCloser multicloser.SafeCloser | |
defer safeSrcCloser.Close(src) | |
dst, e := os.Create(dstName) | |
if e != nil { | |
return 0, errors.New("Error while opening file for writing. Caused by: " + e.Error()) | |
} | |
var safeDstCloser multicloser.SafeCloser | |
defer safeDstCloser.Close(dst) | |
numBytesWritten, e := io.Copy(dst, src) | |
if e != nil { | |
return numBytesWritten, errors.New("Error while copying. Caused by: " + e.Error()) | |
} | |
e = safeDstCloser.Close(dst) | |
if e != nil { | |
return numBytesWritten, errors.New("Error while closing dst. Caused by: " + e.Error()) | |
} | |
e = safeSrcCloser.Close(src) | |
if e != nil { | |
return numBytesWritten, errors.New("Error while closing src. Caused by: " + e.Error()) | |
} | |
return numBytesWritten, nil | |
} |
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