1 files changed, 54 insertions, 0 deletions
diff --git a/util/wasm/preload/preload_qt_plugins.py b/util/wasm/preload/preload_qt_plugins.py
new file mode 100755
index 0000000000..362d129732
--- /dev/null
+++ b/util/wasm/preload/preload_qt_plugins.py
@@ -0,0 +1,54 @@
+#!/usr/bin/env python3
+# Copyright (C) 2023 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+import os
+import sys
+import json
+
+# Path to plugins on the Qt installation on the web server. "$QTPATH" is replaced by qtloader.js
+# at load time (defaults to "qt"), which makes it possible to relocate the application build relative
+# to the Qt build on the web server.
+qt_plugins_path = "$QTDIR/plugins"
+
+# Path to plugins on the in-memory file system provided by Emscripten. This script emits
+# preload commands which copies plugins to this directory.
+qt_deploy_plugins_path = "/qt/plugins"
+
+
+def find_so_files(directory):
+    so_files = []
+    for root, dirs, files in os.walk(directory):
+        for file in files:
+            if file.endswith(".so"):
+                relative_path = os.path.relpath(os.path.join(root, file), directory)
+                so_files.append(relative_path)
+    return so_files
+
+
+if __name__ == "__main__":
+    if len(sys.argv) != 2:
+        print("Usage: python make_qt_symlinks.py <qt-wasm-path>")
+        sys.exit(1)
+
+    qt_wasm_path = sys.argv[1]
+
+    # preload all plugins
+    plugins = find_so_files(os.path.join(qt_wasm_path, "plugins"))
+    preload = [
+        {
+            "source": os.path.join(qt_plugins_path, plugin),
+            "destination": os.path.join(qt_deploy_plugins_path, plugin),
+        }
+        for plugin in plugins
+    ]
+
+    # Create and preload qt.conf which will tell Qt to look for plugins
+    # and QML imports in /qt/plugins and /qt/qml. The qt.conf file is
+    # written to the current directory.
+    qtconf = "[Paths]\nPrefix = /qt\n"
+    with open("qt.conf", "w") as f:
+        f.write(qtconf)
+    preload.append({"source": "qt.conf", "destination": "/qt.conf"})
+
+    print(json.dumps(preload, indent=2))