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First stage of the zipped project file discussed in #1440 (and #865): the zip itself, nothing reads or writes a project with it yet. miniz 3.1.2 (MIT, one .c and one .h, no zlib) is bundled unmodified in sources/container/miniz, as the LZMA SDK is for .edz files, so builds need nothing new. QetZip wraps it: plain ZIP with Deflate, entries stored where asked (pictures, the mimetype entry), written through QSaveFile so a failed save keeps the previous file, without timestamps so that the same project gives the same bytes. Reading refuses unsafe or repeated entry names, encrypted entries and archives over 2 GB once unpacked. Test: tst_qetzip (round trip, same bytes twice, names refused both ways, truncated and non-zip input). A written archive also passes unzip -t and Python's zipfile. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_019Wga9B92BNurDEtxxtCDxf
56 lines
1.9 KiB
C++
56 lines
1.9 KiB
C++
/*
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Copyright 2006-2026 The QElectroTech Team
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This file is part of QElectroTech.
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QElectroTech 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 2 of the License, or
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(at your option) any later version.
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QElectroTech 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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You should have received a copy of the GNU General Public License
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along with QElectroTech. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef QETZIP_H
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#define QETZIP_H
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#include <QByteArray>
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#include <QList>
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#include <QString>
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/**
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@brief The QetZip namespace
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Reads and writes the zip file a .qetz project is stored in: plain ZIP,
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Deflate, as ODF and OOXML documents are, so any unzip tool opens it.
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A whole archive is read into, or written from, memory -- projects are
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megabytes, not gigabytes -- and written through QSaveFile, so a failed
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save leaves the previous file as it was.
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Entries carry no timestamp: saving the same project twice gives the
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same bytes.
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*/
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namespace QetZip
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{
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struct Entry
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{
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QString name; ///< path inside the archive, '/'-separated
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QByteArray data;
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bool compress = true; ///< false: stored (pictures, the mimetype entry)
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};
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/// Largest archive read(): uncompressed total and entry count
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constexpr qint64 MaxUncompressedSize = qint64(2) * 1024 * 1024 * 1024;
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constexpr int MaxEntries = 100000;
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bool write(const QString &path, const QList<Entry> &entries, QString *error = nullptr);
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QByteArray toBytes(const QList<Entry> &entries, QString *error = nullptr);
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bool read(const QString &path, QList<Entry> *entries, QString *error = nullptr);
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bool fromBytes(const QByteArray &zip, QList<Entry> *entries, QString *error = nullptr);
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}
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#endif // QETZIP_H
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