1 files changed, 150 insertions, 0 deletions
diff --git a/bridges/source/jni_uno/jni_helper.h b/bridges/source/jni_uno/jni_helper.h
new file mode 100644
index 000000000..4cc145b26
--- /dev/null
+++ b/bridges/source/jni_uno/jni_helper.h
@@ -0,0 +1,150 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <sal/config.h>
+
+#include <memory>
+
+#include "jni_base.h"
+#include "jni_info.h"
+
+
+namespace jni_uno
+{
+
+inline void jstring_to_ustring(
+    JNI_context const & jni, rtl_uString ** out_ustr, jstring jstr )
+{
+    if (nullptr == jstr)
+    {
+        rtl_uString_new( out_ustr );
+    }
+    else
+    {
+        jsize len = jni->GetStringLength( jstr );
+        std::unique_ptr< rtl_mem > mem(
+            rtl_mem::allocate(
+                sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ) );
+        rtl_uString * ustr = reinterpret_cast<rtl_uString *>(mem.get());
+        jni->GetStringRegion( jstr, 0, len, reinterpret_cast<jchar *>(ustr->buffer) );
+        jni.ensure_no_exception();
+        ustr->refCount = 1;
+        ustr->length = len;
+        ustr->buffer[ len ] = '\0';
+        mem.release();
+        if (nullptr != *out_ustr)
+            rtl_uString_release( *out_ustr );
+        *out_ustr = ustr;
+    }
+}
+
+inline OUString jstring_to_oustring(
+    JNI_context const & jni, jstring jstr )
+{
+    rtl_uString * ustr = nullptr;
+    jstring_to_ustring( jni, &ustr, jstr );
+    return OUString( ustr, SAL_NO_ACQUIRE );
+}
+
+inline jstring ustring_to_jstring(
+    JNI_context const & jni, rtl_uString const * ustr )
+{
+    jstring jstr = jni->NewString( reinterpret_cast<jchar const *>(ustr->buffer), ustr->length );
+    jni.ensure_no_exception();
+    return jstr;
+}
+
+
+// if inException, does not handle exceptions, in which case returned value will
+// be null if exception occurred:
+inline jclass find_class(
+    JNI_context const & jni, char const * class_name, bool inException = false )
+{
+    // find_class may be called before the JNI_info is set:
+    jclass c=nullptr;
+    jmethodID m;
+    JNI_info const * info = jni.get_info();
+    if (info == nullptr) {
+        jni.getClassForName(&c, &m);
+        if (c == nullptr) {
+            if (inException) {
+                return nullptr;
+            }
+            jni.ensure_no_exception();
+        }
+    } else {
+        c = info->m_class_Class;
+        m = info->m_method_Class_forName;
+    }
+    return jni.findClass(class_name, c, m, inException);
+}
+
+
+inline jobject create_type( JNI_context const & jni, jclass clazz )
+{
+    JNI_info const * jni_info = jni.get_info();
+    jvalue arg;
+    arg.l = clazz;
+    jobject jo_type = jni->NewObjectA(
+        jni_info->m_class_Type, jni_info->m_ctor_Type_with_Class, &arg );
+    jni.ensure_no_exception();
+    return jo_type;
+}
+
+inline jobject create_type(
+    JNI_context const & jni, typelib_TypeDescriptionReference * type )
+{
+    JNI_info const * jni_info = jni.get_info();
+    jvalue args[ 2 ];
+    // get type class
+    args[ 0 ].i = type->eTypeClass;
+    JLocalAutoRef jo_type_class(
+        jni, jni->CallStaticObjectMethodA(
+            jni_info->m_class_TypeClass,
+            jni_info->m_method_TypeClass_fromInt, args ) );
+    jni.ensure_no_exception();
+    // construct type
+    JLocalAutoRef jo_type_name(
+        jni, ustring_to_jstring( jni, type->pTypeName ) );
+    args[ 0 ].l = jo_type_name.get();
+    args[ 1 ].l = jo_type_class.get();
+    jobject jo_type = jni->NewObjectA(
+        jni_info->m_class_Type,
+        jni_info->m_ctor_Type_with_Name_TypeClass, args );
+    jni.ensure_no_exception();
+    return jo_type;
+}
+
+inline jobject compute_oid( JNI_context const & jni, jobject jo )
+{
+    JNI_info const * jni_info = jni.get_info();
+    jvalue arg;
+    arg.l= jo;
+    jobject jo_oid = jni->CallStaticObjectMethodA(
+        jni_info->m_class_UnoRuntime,
+        jni_info->m_method_UnoRuntime_generateOid, &arg );
+    jni.ensure_no_exception();
+    return jo_oid;
+}
+
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */