wehub-resource-sync
35 lines
615 B
Go
35 lines
615 B
Go
// Package fileutil provides file operation utilities.
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package fileutil
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import (
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"io"
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"os"
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)
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// CopyFile copies the file at src to dst. If dst already exists it is
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// overwritten. Partial files are cleaned up on error.
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func CopyFile(src, dst string) error {
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in, err := os.Open(src)
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if err != nil {
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return err
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}
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defer in.Close()
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out, err := os.Create(dst)
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if err != nil {
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return err
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}
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_, copyErr := io.Copy(out, in)
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closeErr := out.Close()
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if copyErr != nil {
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os.Remove(dst) // clean up partial file
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return copyErr
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}
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if closeErr != nil {
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os.Remove(dst)
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return closeErr
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}
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return nil
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}
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