mirror of
https://github.com/ProtonMail/proton-bridge.git
synced 2025-12-18 16:17:03 +00:00
61 lines
1.4 KiB
Go
61 lines
1.4 KiB
Go
// Copyright (c) 2022 Proton Technologies AG
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//
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// This file is part of ProtonMail Bridge.
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//
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// ProtonMail Bridge is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// ProtonMail Bridge is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with ProtonMail Bridge. If not, see <https://www.gnu.org/licenses/>.
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package cache
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import (
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"bytes"
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"compress/gzip"
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)
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type GZipCompressor struct{}
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func (GZipCompressor) Compress(dec []byte) ([]byte, error) {
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buf := new(bytes.Buffer)
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zw := gzip.NewWriter(buf)
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if _, err := zw.Write(dec); err != nil {
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return nil, err
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}
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if err := zw.Close(); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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func (GZipCompressor) Decompress(cmp []byte) ([]byte, error) {
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zr, err := gzip.NewReader(bytes.NewReader(cmp))
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if err != nil {
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return nil, err
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}
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buf := new(bytes.Buffer)
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if _, err := buf.ReadFrom(zr); err != nil {
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return nil, err
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}
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if err := zr.Close(); err != nil {
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return nil, err
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}
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return buf.Bytes(), nil
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}
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