Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_JNI_HELPER_H
      21             : #define INCLUDED_JNI_HELPER_H
      22             : 
      23             : #include <o3tl/heap_ptr.hxx>
      24             : 
      25             : #include "jni_base.h"
      26             : #include "jni_info.h"
      27             : 
      28             : 
      29             : namespace jni_uno
      30             : {
      31             : 
      32           0 : inline void jstring_to_ustring(
      33             :     JNI_context const & jni, rtl_uString ** out_ustr, jstring jstr )
      34             : {
      35           0 :     if (0 == jstr)
      36             :     {
      37           0 :         rtl_uString_new( out_ustr );
      38             :     }
      39             :     else
      40             :     {
      41           0 :         jsize len = jni->GetStringLength( jstr );
      42             :         o3tl::heap_ptr< rtl_mem > mem(
      43             :             rtl_mem::allocate(
      44           0 :                 sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ) );
      45           0 :         rtl_uString * ustr = (rtl_uString *)mem.get();
      46           0 :         jni->GetStringRegion( jstr, 0, len, (jchar *) ustr->buffer );
      47           0 :         jni.ensure_no_exception();
      48           0 :         ustr->refCount = 1;
      49           0 :         ustr->length = len;
      50           0 :         ustr->buffer[ len ] = '\0';
      51           0 :         mem.release();
      52           0 :         if (0 != *out_ustr)
      53           0 :             rtl_uString_release( *out_ustr );
      54           0 :         *out_ustr = ustr;
      55             :     }
      56           0 : }
      57             : 
      58           0 : inline OUString jstring_to_oustring(
      59             :     JNI_context const & jni, jstring jstr )
      60             : {
      61           0 :     rtl_uString * ustr = 0;
      62           0 :     jstring_to_ustring( jni, &ustr, jstr );
      63           0 :     return OUString( ustr, SAL_NO_ACQUIRE );
      64             : }
      65             : 
      66           0 : inline jstring ustring_to_jstring(
      67             :     JNI_context const & jni, rtl_uString const * ustr )
      68             : {
      69           0 :     jstring jstr = jni->NewString( (jchar const *) ustr->buffer, ustr->length );
      70           0 :     jni.ensure_no_exception();
      71           0 :     return jstr;
      72             : }
      73             : 
      74             : 
      75             : // if inException, does not handle exceptions, in which case returned value will
      76             : // be null if exception occurred:
      77           0 : inline jclass find_class(
      78             :     JNI_context const & jni, char const * class_name, bool inException = false )
      79             : {
      80             :     // find_class may be called before the JNI_info is set:
      81           0 :     jclass c=0;
      82             :     jmethodID m;
      83           0 :     JNI_info const * info = jni.get_info();
      84           0 :     if (info == 0) {
      85           0 :         jni.getClassForName(&c, &m);
      86           0 :         if (c == 0) {
      87           0 :             if (inException) {
      88           0 :                 return 0;
      89             :             }
      90           0 :             jni.ensure_no_exception();
      91             :         }
      92             :     } else {
      93           0 :         c = info->m_class_Class;
      94           0 :         m = info->m_method_Class_forName;
      95             :     }
      96           0 :     return jni.findClass(class_name, c, m, inException);
      97             : }
      98             : 
      99             : 
     100           0 : inline jobject create_type( JNI_context const & jni, jclass clazz )
     101             : {
     102           0 :     JNI_info const * jni_info = jni.get_info();
     103             :     jvalue arg;
     104           0 :     arg.l = clazz;
     105             :     jobject jo_type = jni->NewObjectA(
     106           0 :         jni_info->m_class_Type, jni_info->m_ctor_Type_with_Class, &arg );
     107           0 :     jni.ensure_no_exception();
     108           0 :     return jo_type;
     109             : }
     110             : 
     111           0 : inline jobject create_type(
     112             :     JNI_context const & jni, typelib_TypeDescriptionReference * type )
     113             : {
     114           0 :     JNI_info const * jni_info = jni.get_info();
     115             :     jvalue args[ 2 ];
     116             :     // get type class
     117           0 :     args[ 0 ].i = type->eTypeClass;
     118             :     JLocalAutoRef jo_type_class(
     119             :         jni, jni->CallStaticObjectMethodA(
     120             :             jni_info->m_class_TypeClass,
     121           0 :             jni_info->m_method_TypeClass_fromInt, args ) );
     122           0 :     jni.ensure_no_exception();
     123             :     // construct type
     124             :     JLocalAutoRef jo_type_name(
     125           0 :         jni, ustring_to_jstring( jni, type->pTypeName ) );
     126           0 :     args[ 0 ].l = jo_type_name.get();
     127           0 :     args[ 1 ].l = jo_type_class.get();
     128             :     jobject jo_type = jni->NewObjectA(
     129             :         jni_info->m_class_Type,
     130           0 :         jni_info->m_ctor_Type_with_Name_TypeClass, args );
     131           0 :     jni.ensure_no_exception();
     132           0 :     return jo_type;
     133             : }
     134             : 
     135           0 : inline jobject compute_oid( JNI_context const & jni, jobject jo )
     136             : {
     137           0 :     JNI_info const * jni_info = jni.get_info();
     138             :     jvalue arg;
     139           0 :     arg.l= jo;
     140             :     jobject jo_oid = jni->CallStaticObjectMethodA(
     141             :         jni_info->m_class_UnoRuntime,
     142           0 :         jni_info->m_method_UnoRuntime_generateOid, &arg );
     143           0 :     jni.ensure_no_exception();
     144           0 :     return jo_oid;
     145             : }
     146             : 
     147             : }
     148             : 
     149             : #endif
     150             : 
     151             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */