Ensure that the case of the path will match then QUrl for a UNC path

When a UNC path is used to locate the qmldir then when it is checked
later on the original path will be compared against the one that QUrl
returns. However, QUrl will convert the case of the host name to be
all lower-case whereas the original string may have been in upper-case.

For example, QUrl::fromLocalFile("//QT-L-R90X9VHB/tasks").toString()
will output "file://qt-l-r90x9vhb/tasks".

So in this case, the absoluteFilePath is changed at this point so that
it will match what QUrl has for the same path to avoid a problem with
it no being found.

Pick-to: 6.1 6.0 5.15
Change-Id: I2cd5d74bfec06c01635f80574ac1a6d479792855
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>

1 files changed, 8 insertions, 3 deletions

diff --git a/src/qml/qml/qqmlimport.cpp b/src/qml/qml/qqmlimport.cpp
index 0016d4bcc4..1d2d0d15cd 100644
--- a/src/qml/qml/qqmlimport.cpp
+++ b/src/qml/qml/qqmlimport.cpp
@@ -1436,11 +1436,16 @@ QQmlImports::LocalQmldirResult QQmlImportsPrivate::locateLocalQmldir(
         if (!absoluteFilePath.isEmpty()) {
             QString url;
             const QStringView absolutePath = QStringView{absoluteFilePath}.left(absoluteFilePath.lastIndexOf(Slash) + 1);
-            if (absolutePath.at(0) == Colon)
+            if (absolutePath.at(0) == Colon) {
                 url = QLatin1String("qrc") + absolutePath;
-            else
+            } else {
                 url = QUrl::fromLocalFile(absolutePath.toString()).toString();
-
+                // This handles the UNC path case as when the path is retrieved from the QUrl it
+                // will convert the host name from upper case to lower case. So the absoluteFilePath
+                // is changed at this point to make sure it will match later on in that case.
+                if (absoluteFilePath.startsWith(QLatin1String("//")))
+                    absoluteFilePath = QUrl::fromLocalFile(absoluteFilePath).toString(QUrl::RemoveScheme);
+            }
             QQmlImportDatabase::QmldirCache *cache = new QQmlImportDatabase::QmldirCache;
             cache->version = version;
             cache->qmldirFilePath = absoluteFilePath;