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Copy pathgzip.go
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gzip.go
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/*
* This file is part of PathsHelper library.
*
* Copyright 2021 Arduino AG (http://www.arduino.cc/)
*
* PathsHelper library is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As a special exception, you may use this file as part of a free software
* library without restriction. Specifically, if other files instantiate
* templates or use macros or inline functions from this file, or you compile
* this file and link it with other files to produce an executable, this
* file does not by itself cause the resulting executable to be covered by
* the GNU General Public License. This exception does not however
* invalidate any other reasons why the executable file might be covered by
* the GNU General Public License.
*/
package paths
import (
"compress/gzip"
"fmt"
"io"
)
// GZip compress src with gzip and writes the compressed file on dst
//func GZip(src, dst *Path) error {
// return errors.New("gzip unimplemented")
//}
// GUnzip decompress src with gzip and writes the uncompressed file on dst
func GUnzip(src, dest *Path) error {
gzIn, err := src.Open()
if err != nil {
return fmt.Errorf("opening %s: %w", src, err)
}
defer gzIn.Close()
in, err := gzip.NewReader(gzIn)
if err != nil {
return fmt.Errorf("decoding %s: %w", src, err)
}
defer in.Close()
out, err := dest.Create()
if err != nil {
return fmt.Errorf("creating %s: %w", dest, err)
}
defer out.Close()
_, err = io.Copy(out, in)
if err != nil {
return fmt.Errorf("uncompressing %s: %w", dest, err)
}
return nil
}