shiboken6/doc generator: Resolve relative, local .html documents to doc.qt.io

Links to relative, local .html documents as generated by qdoc into the
WebXML files are currently broken in our documentation (800 cases).
They are syntactically not recognized by sphinx nor could be resolved
in the HTML file tree.

Expand them to URLs to the doc.qt.io web page.

Task-number: PYSIDE-1112
Change-Id: Ibdc7f9c47db6d26c088678aa67f1a320542f68e0
Reviewed-by: Christian Tismer <tismer@stackless.com>
(cherry picked from commit 2167ad24f81515a414a655742963fd4b3899ddb2)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>

1 files changed, 23 insertions, 1 deletions

diff --git a/sources/shiboken6/generator/qtdoc/qtdocgenerator.cpp b/sources/shiboken6/generator/qtdoc/qtdocgenerator.cpp
index fd4716e0a..6ba3847bd 100644
--- a/sources/shiboken6/generator/qtdoc/qtdocgenerator.cpp
+++ b/sources/shiboken6/generator/qtdoc/qtdocgenerator.cpp
@@ -1141,7 +1141,29 @@ const QLoggingCategory &QtDocGenerator::loggingCategory() const
     return lcShibokenDoc();
 }
 
+static bool isRelativeHtmlFile(const QString &linkRef)
+{
+    return !linkRef.startsWith(u"http")
+        && (linkRef.endsWith(u".html") || linkRef.contains(u".html#"));
+}
+
+// Resolve relative, local .html documents links to doc.qt.io as they
+// otherwise will not work and neither be found in the HTML tree.
 QtXmlToSphinxLink QtDocGenerator::resolveLink(const QtXmlToSphinxLink &link) const
 {
-    return link;
+    if (link.type != QtXmlToSphinxLink::Reference || !isRelativeHtmlFile(link.linkRef))
+        return link;
+    static const QString prefix = QStringLiteral("https://doc.qt.io/qt-")
+        + QString::number(QT_VERSION_MAJOR) + QLatin1Char('/');
+    QtXmlToSphinxLink resolved = link;
+    resolved.type = QtXmlToSphinxLink::External;
+    resolved.linkRef = prefix + link.linkRef;
+    if (resolved.linkText.isEmpty()) {
+        resolved.linkText = link.linkRef;
+        const qsizetype anchor = resolved.linkText.lastIndexOf(u'#');
+        if (anchor != -1)
+            resolved.linkText.truncate(anchor);
+    }
+    qDebug() << __FUNCTION__ << link << "->" << resolved;
+    return resolved;
 }