41 lines
925 B
Go
41 lines
925 B
Go
package compactor
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import (
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"compress/gzip"
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"errors"
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"fmt"
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"io"
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"io/fs"
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"os"
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)
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func Compact(source, destination string) error {
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fmt.Println(
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"Compacting", source, "to", destination,
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)
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if _, err := os.Stat(source); errors.Is(err, fs.ErrNotExist) {
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return errors.New("source file does not exist")
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}
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originFileHandle, err := os.Open(source)
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if err != nil {
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return errors.New("failed to open source file")
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}
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defer originFileHandle.Close()
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destinationFileHandle, err := os.Create(destination)
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if err != nil {
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return errors.New("failed to create destination file")
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}
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defer destinationFileHandle.Close()
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zipWriter := gzip.NewWriter(destinationFileHandle)
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defer zipWriter.Close()
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if _, err := io.Copy(zipWriter, originFileHandle); err != nil {
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return errors.New("failed to copy zip to destination file: " + err.Error()) //nolint:wraperr
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}
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return nil
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}
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