File 0019-Allow-loading-SVG-files-with-a-doctype-declaration.patch of Package libqt5-qtsvg.29651
From 47e94a3ec363eba1189f8f16246df43c76cbd833 Mon Sep 17 00:00:00 2001
From: Nicolas Fella <nicolas.fella@kdab.com>
Date: Sat, 19 Sep 2020 16:56:21 +0200
Subject: [PATCH 19/21] Allow loading SVG files with a doctype declaration
SVGs may have a DOCTYPE declaration
(https://www.w3.org/TR/2003/REC-SVGMobile-20030114/)
in their first line.
This patch makes sure those SVGs are loaded properly
Fixes: QTBUG-87583
Change-Id: Ia3dcb519b6ee2b498dc81ef496764d99ea6c4a9a
Reviewed-by: Eirik Aavitsland <eirik.aavitsland@qt.io>
Reviewed-by: Robert Loehning <robert.loehning@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 2f63ddc6afeb3d2c3c7a42add0129547acd61ede)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
(cherry picked from commit fab0ed9a65a451d9a7a3b7ac617a0abc3176049a)
---
src/plugins/imageformats/svg/qsvgiohandler.cpp | 8 ++++----
src/svg/qsvgtinydocument.cpp | 4 ++--
2 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/src/plugins/imageformats/svg/qsvgiohandler.cpp b/src/plugins/imageformats/svg/qsvgiohandler.cpp
index a999d47..5e96d27 100644
--- a/src/plugins/imageformats/svg/qsvgiohandler.cpp
+++ b/src/plugins/imageformats/svg/qsvgiohandler.cpp
@@ -126,14 +126,14 @@ bool QSvgIOHandler::canRead() const
if (d->loaded && !d->readDone)
return true; // Will happen if we have been asked for the size
- QByteArray buf = device()->peek(8);
+ QByteArray buf = device()->peek(16);
#ifndef QT_NO_COMPRESS
if (buf.startsWith("\x1f\x8b")) {
setFormat("svgz");
return true;
} else
#endif
- if (buf.contains("<?xml") || buf.contains("<svg") || buf.contains("<!--")) {
+ if (buf.contains("<?xml") || buf.contains("<svg") || buf.contains("<!--") || buf.contains("<!DOCTYPE svg")) {
setFormat("svg");
return true;
}
@@ -267,12 +267,12 @@ bool QSvgIOHandler::supportsOption(ImageOption option) const
bool QSvgIOHandler::canRead(QIODevice *device)
{
- QByteArray buf = device->peek(8);
+ QByteArray buf = device->peek(16);
return
#ifndef QT_NO_COMPRESS
buf.startsWith("\x1f\x8b") ||
#endif
- buf.contains("<?xml") || buf.contains("<svg") || buf.contains("<!--");
+ buf.contains("<?xml") || buf.contains("<svg") || buf.contains("<!--") || buf.contains("<!DOCTYPE svg");
}
QT_END_NAMESPACE
diff --git a/src/svg/qsvgtinydocument.cpp b/src/svg/qsvgtinydocument.cpp
index da3d142..38db330 100644
--- a/src/svg/qsvgtinydocument.cpp
+++ b/src/svg/qsvgtinydocument.cpp
@@ -157,8 +157,8 @@ static QByteArray qt_inflateSvgzDataFrom(QIODevice *device, bool doCheckContent)
if (doCheckContent) {
// Quick format check, equivalent to QSvgIOHandler::canRead()
- QByteArray buf = destination.left(8);
- if (!buf.contains("<?xml") && !buf.contains("<svg") && !buf.contains("<!--")) {
+ QByteArray buf = destination.left(16);
+ if (!buf.contains("<?xml") && !buf.contains("<svg") && !buf.contains("<!--") && !buf.contains("<!DOCTYPE svg")) {
inflateEnd(&zlibStream);
qCWarning(lcSvgHandler, "Error while inflating gzip file: SVG format check failed");
return QByteArray();
--
2.20.1