mirror of
https://github.com/qelectrotech/qelectrotech-source-mirror.git
synced 2026-07-30 07:44:13 +02:00
Shane Ringrose
d56bca66da
- EdzArchive checks the archive magic up front: gives a clear message for zip-format .edz (not yet supported) and unrecognised data, instead of an opaque 7z decode error. - Trim the vendored LZMA SDK headers to the decode closure actually used (removes 21 unused encoder/multithread/Xz/Aes headers; 18 .c + 18 .h remain). - Add sources/import/edz/README.md documenting the feature, the data mapping and the bundled SDK. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
108 lines
3.1 KiB
C++
108 lines
3.1 KiB
C++
/*
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Copyright 2006 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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#include "edzarchive.h"
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#include "edzsevenzip.h"
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#include <QDir>
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#include <QDirIterator>
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#include <QFile>
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#include <QFileInfo>
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#include <QTemporaryDir>
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EdzArchive::EdzArchive() = default;
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EdzArchive::~EdzArchive() = default;
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/**
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Extract the .edz at @a edz_path into a fresh temporary directory.
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@return true on success; extractedDir()/partXmlPath() are then valid.
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*/
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bool EdzArchive::extract(const QString &edz_path)
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{
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m_error.clear();
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const QFileInfo fi(edz_path);
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if (!fi.exists() || !fi.isFile()) {
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m_error = QStringLiteral("File not found: %1").arg(edz_path);
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return false;
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}
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// A .edz is a 7-Zip archive (magic "7z\xBC\xAF\x27\x1C"). Some EPLAN exports
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// are instead zip-format ("PK\x03\x04"); the bundled reader only does 7z, so
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// detect that up front and say so clearly rather than failing opaquely.
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QFile probe(fi.absoluteFilePath());
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if (!probe.open(QIODevice::ReadOnly)) {
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m_error = QStringLiteral("Cannot read %1").arg(edz_path);
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return false;
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}
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const QByteArray magic = probe.read(6);
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probe.close();
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static const QByteArray k7z("7z\xBC\xAF\x27\x1C", 6);
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if (!magic.startsWith(k7z)) {
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if (magic.startsWith(QByteArray("PK\x03\x04", 4))) {
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m_error = QStringLiteral(
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"This .edz is a zip-format package, which is not yet "
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"supported (only 7-Zip .edz files can be imported).");
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} else {
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m_error = QStringLiteral(
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"Not a valid .edz package (unrecognised archive format).");
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}
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return false;
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}
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m_dir.reset(new QTemporaryDir);
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if (!m_dir->isValid()) {
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m_error = QStringLiteral("Could not create a temporary directory: %1")
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.arg(m_dir->errorString());
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return false;
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}
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if (!sevenZipExtract(fi.absoluteFilePath(), m_dir->path(), m_error)) {
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return false;
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}
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if (partXmlPath().isEmpty()) {
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m_error = QStringLiteral("No *.part.xml found inside the .edz");
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return false;
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}
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return true;
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}
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/** @return the temporary folder holding the extracted tree (empty if none). */
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QString EdzArchive::extractedDir() const
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{
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return m_dir ? m_dir->path() : QString();
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}
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/** @return absolute path to the first *.part.xml in the extracted tree. */
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QString EdzArchive::partXmlPath() const
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{
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const QString root = extractedDir();
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if (root.isEmpty()) {
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return QString();
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}
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QDirIterator it(root, QStringList{QStringLiteral("*.part.xml")},
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QDir::Files, QDirIterator::Subdirectories);
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return it.hasNext() ? it.next() : QString();
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}
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QString EdzArchive::errorString() const
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{
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return m_error;
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}
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