36 lines
822 B
Go
36 lines
822 B
Go
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// Package util provide some utility functions
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package util
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import (
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"fmt"
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"io"
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"os"
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)
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// CopyFile define func of copies a file from src to dst.
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// If the destination file exists, it will be overwritten.
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func CopyFile(src, dst string) error {
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sourceFile, err := os.Open(src)
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if err != nil {
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return fmt.Errorf("failed to open source file %s: %w", src, err)
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}
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defer sourceFile.Close()
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destFile, err := os.Create(dst)
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if err != nil {
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return fmt.Errorf("failed to create destination file %s: %w", dst, err)
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}
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defer destFile.Close()
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_, err = io.Copy(destFile, sourceFile)
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if err != nil {
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return fmt.Errorf("failed to copy file contents from %s to %s: %w", src, dst, err)
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}
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err = destFile.Sync()
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if err != nil {
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return fmt.Errorf("failed to sync destination file %s: %w", dst, err)
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}
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return nil
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}
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