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.qetz: no columns for where a block sat; open a later format read-only

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The database held where each moved block sat among its parent's
children (props_at, info_at, links_at), though reading only asked
whether there was one: the marker the folio file keeps says that, and
where it goes back. The columns are gone; format 2 files leave the same
markers and still open.

A .qetz of a later format whose min-reader allows this version was
still refused by the database's own format check. It opens now,
read-only, with a message: saving it here could lose what this version
does not know. Save As writes a copy in this version's format.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
ispyisail
2026-10-14 09:47:08 +13:00
parent 5975b75766
commit 4c3d87e3f7
7 changed files with 123 additions and 55 deletions
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tests/qttest/tst_qetcontainer.cpp
+39 -2
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@@ -294,6 +294,43 @@ private slots:
}
// A file whose manifest needs a later reader is refused, not half read
// A later format whose min-reader allows this one opens, and join() says
// it is later: QElectroTech opens it read-only
void laterFormatAllowedRead()
{
QDomDocument original;
QList<QetZip::Entry> entries = splitFile(QStringLiteral(QET_EXAMPLES_DIR "/industrial.qet"), &original);
QVERIFY(!entries.isEmpty());
const int later = QetContainer::Format + 1;
for (QetZip::Entry &e : entries)
if (e.name == QLatin1String("manifest.xml"))
e.data = QString::fromUtf8(e.data).replace(QRegularExpression(QStringLiteral(" format=\"\\d+\"")),
QStringLiteral(" format=\"%1\"").arg(later)).toUtf8();
alterDatabase(entries, QStringLiteral("UPDATE meta SET value = '%1' WHERE key = 'format'")
.arg(later).toUtf8().constData());
QDomDocument back;
QString error;
int format = 0;
QVERIFY2(QetContainer::join(entries, &back, &error, &format), qPrintable(error));
QCOMPARE(format, later);
const QString d = difference(original.documentElement(), back.documentElement(), QString());
QVERIFY2(d.isEmpty(), qPrintable(d));
}
// The database holds data, not where a block sat in the XML: the folio
// file's marker says where it goes back
void noPositionColumns()
{
QDomDocument original;
const QList<QetZip::Entry> entries = splitFile(QStringLiteral(QET_EXAMPLES_DIR "/industrial.qet"), &original);
const QByteArray database = entry(entries, QStringLiteral("project.sqlite"));
QCOMPARE(query(database, "SELECT group_concat(name) FROM pragma_table_info('element')"),
QStringLiteral("uuid,folio_uuid,prefix,freezeLabel,info_attrs,links_attrs"));
QCOMPARE(query(database, "SELECT count(*) FROM pragma_table_info('folio') WHERE name LIKE '%_at'"),
QStringLiteral("0"));
QCOMPARE(query(database, "SELECT count(*) FROM meta WHERE key = 'props_at'"), QStringLiteral("0"));
}
void laterFormatRefused()
{
QDomDocument original;
@@ -351,8 +388,8 @@ private slots:
QTest::addColumn<QByteArray>("sql");
QTest::addColumn<QString>("said");
QTest::newRow("symbol row of no symbol")
<< QByteArray("INSERT INTO element SELECT 'x', folio_uuid, prefix, freezeLabel, info_at, info_attrs,"
" links_at, links_attrs FROM element LIMIT 1")
<< QByteArray("INSERT INTO element SELECT 'x', folio_uuid, prefix, freezeLabel, info_attrs,"
" links_attrs FROM element LIMIT 1")
<< QStringLiteral("symbol rows");
QTest::newRow("wire row of no wire")
<< QByteArray("INSERT INTO conductor SELECT 'x', folio_uuid, element1, terminal1, element2, terminal2,"