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| 1 | +/* |
| 2 | + * This file is part of PathsHelper library. |
| 3 | + * |
| 4 | + * Copyright 2021 Arduino AG (http://www.arduino.cc/) |
| 5 | + * |
| 6 | + * PathsHelper library is free software; you can redistribute it and/or modify |
| 7 | + * it under the terms of the GNU General Public License as published by |
| 8 | + * the Free Software Foundation; either version 2 of the License, or |
| 9 | + * (at your option) any later version. |
| 10 | + * |
| 11 | + * This program is distributed in the hope that it will be useful, |
| 12 | + * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | + * GNU General Public License for more details. |
| 15 | + * |
| 16 | + * You should have received a copy of the GNU General Public License |
| 17 | + * along with this program; if not, write to the Free Software |
| 18 | + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | + * |
| 20 | + * As a special exception, you may use this file as part of a free software |
| 21 | + * library without restriction. Specifically, if other files instantiate |
| 22 | + * templates or use macros or inline functions from this file, or you compile |
| 23 | + * this file and link it with other files to produce an executable, this |
| 24 | + * file does not by itself cause the resulting executable to be covered by |
| 25 | + * the GNU General Public License. This exception does not however |
| 26 | + * invalidate any other reasons why the executable file might be covered by |
| 27 | + * the GNU General Public License. |
| 28 | + */ |
| 29 | + |
| 30 | +package paths |
| 31 | + |
| 32 | +import ( |
| 33 | + "compress/gzip" |
| 34 | + "io" |
| 35 | + |
| 36 | + "github.com/pkg/errors" |
| 37 | +) |
| 38 | + |
| 39 | +// GZip compress src with gzip and writes the compressed file on dst |
| 40 | +//func GZip(src, dst *Path) error { |
| 41 | +// return errors.New("gzip unimplemented") |
| 42 | +//} |
| 43 | + |
| 44 | +// GUnzip decompress src with gzip and writes the uncompressed file on dst |
| 45 | +func GUnzip(src, dest *Path) error { |
| 46 | + gzIn, err := src.Open() |
| 47 | + if err != nil { |
| 48 | + return errors.Wrap(err, "opening "+src.String()) |
| 49 | + } |
| 50 | + defer gzIn.Close() |
| 51 | + |
| 52 | + in, err := gzip.NewReader(gzIn) |
| 53 | + if err != nil { |
| 54 | + return errors.Wrap(err, "decoding "+dest.String()) |
| 55 | + } |
| 56 | + defer in.Close() |
| 57 | + |
| 58 | + out, err := dest.Create() |
| 59 | + if err != nil { |
| 60 | + return errors.Wrap(err, "creating "+dest.String()) |
| 61 | + } |
| 62 | + defer out.Close() |
| 63 | + |
| 64 | + _, err = io.Copy(out, in) |
| 65 | + if err != nil { |
| 66 | + return errors.Wrap(err, "uncompressing "+dest.String()) |
| 67 | + } |
| 68 | + |
| 69 | + return nil |
| 70 | +} |
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