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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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sources/qetproject.cpp
+10 -2
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@@ -456,7 +456,8 @@ QETProject::ProjectState QETProject::openFile(QFile *file)
// QetContainer::parse() does exactly that, for a .qet and for each part
// of a .qetz alike.
QString read_error;
if (!QetContainer::readDocument(content, &xml_project, &read_error))
int container_format = 0;
if (!QetContainer::readDocument(content, &xml_project, &read_error, &container_format))
{
qWarning().noquote() << "Unable to read" << fi.fileName() << ":" << read_error;
if(opened_here) {
@@ -489,9 +490,16 @@ QETProject::ProjectState QETProject::openFile(QFile *file)
<< xml_parse_ms / 1000.0 << ", content "
<< (total_ms - xml_parse_ms) / 1000.0 << ")";
if (!fi.isWritable()) {
//Written by a later QElectroTech that lets this one read it: saving
//here would drop what this version does not know
m_from_later_version = container_format > QetContainer::Format;
if (!fi.isWritable() || m_from_later_version) {
setReadOnly(true);
}
if (m_from_later_version) {
qInfo().noquote() << QStringLiteral("Project %1 is of .qetz format %2 (this version writes %3): opened read-only")
.arg(fi.fileName()).arg(container_format).arg(QetContainer::Format);
}
if(opened_here) {
file->close();
}