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_BRIDGES_SOURCE_JNI_UNO_JNI_HELPER_H
      21             : #define INCLUDED_BRIDGES_SOURCE_JNI_UNO_JNI_HELPER_H
      22             : 
      23             : #include <sal/config.h>
      24             : 
      25             : #include <memory>
      26             : 
      27             : #include "jni_base.h"
      28             : #include "jni_info.h"
      29             : 
      30             : 
      31             : namespace jni_uno
      32             : {
      33             : 
      34          85 : inline void jstring_to_ustring(
      35             :     JNI_context const & jni, rtl_uString ** out_ustr, jstring jstr )
      36             : {
      37          85 :     if (0 == jstr)
      38             :     {
      39           0 :         rtl_uString_new( out_ustr );
      40             :     }
      41             :     else
      42             :     {
      43          85 :         jsize len = jni->GetStringLength( jstr );
      44             :         std::unique_ptr< rtl_mem > mem(
      45             :             rtl_mem::allocate(
      46          85 :                 sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ) );
      47          85 :         rtl_uString * ustr = reinterpret_cast<rtl_uString *>(mem.get());
      48          85 :         jni->GetStringRegion( jstr, 0, len, reinterpret_cast<jchar *>(ustr->buffer) );
      49          85 :         jni.ensure_no_exception();
      50          85 :         ustr->refCount = 1;
      51          85 :         ustr->length = len;
      52          85 :         ustr->buffer[ len ] = '\0';
      53          85 :         mem.release();
      54          85 :         if (0 != *out_ustr)
      55           0 :             rtl_uString_release( *out_ustr );
      56          85 :         *out_ustr = ustr;
      57             :     }
      58          85 : }
      59             : 
      60          64 : inline OUString jstring_to_oustring(
      61             :     JNI_context const & jni, jstring jstr )
      62             : {
      63          64 :     rtl_uString * ustr = 0;
      64          64 :     jstring_to_ustring( jni, &ustr, jstr );
      65          64 :     return OUString( ustr, SAL_NO_ACQUIRE );
      66             : }
      67             : 
      68          57 : inline jstring ustring_to_jstring(
      69             :     JNI_context const & jni, rtl_uString const * ustr )
      70             : {
      71          57 :     jstring jstr = jni->NewString( reinterpret_cast<jchar const *>(ustr->buffer), ustr->length );
      72          57 :     jni.ensure_no_exception();
      73          57 :     return jstr;
      74             : }
      75             : 
      76             : 
      77             : // if inException, does not handle exceptions, in which case returned value will
      78             : // be null if exception occurred:
      79         106 : inline jclass find_class(
      80             :     JNI_context const & jni, char const * class_name, bool inException = false )
      81             : {
      82             :     // find_class may be called before the JNI_info is set:
      83         106 :     jclass c=0;
      84             :     jmethodID m;
      85         106 :     JNI_info const * info = jni.get_info();
      86         106 :     if (info == 0) {
      87           0 :         jni.getClassForName(&c, &m);
      88           0 :         if (c == 0) {
      89           0 :             if (inException) {
      90           0 :                 return 0;
      91             :             }
      92           0 :             jni.ensure_no_exception();
      93             :         }
      94             :     } else {
      95         106 :         c = info->m_class_Class;
      96         106 :         m = info->m_method_Class_forName;
      97             :     }
      98         106 :     return jni.findClass(class_name, c, m, inException);
      99             : }
     100             : 
     101             : 
     102          41 : inline jobject create_type( JNI_context const & jni, jclass clazz )
     103             : {
     104          41 :     JNI_info const * jni_info = jni.get_info();
     105             :     jvalue arg;
     106          41 :     arg.l = clazz;
     107             :     jobject jo_type = jni->NewObjectA(
     108          41 :         jni_info->m_class_Type, jni_info->m_ctor_Type_with_Class, &arg );
     109          41 :     jni.ensure_no_exception();
     110          41 :     return jo_type;
     111             : }
     112             : 
     113           0 : inline jobject create_type(
     114             :     JNI_context const & jni, typelib_TypeDescriptionReference * type )
     115             : {
     116           0 :     JNI_info const * jni_info = jni.get_info();
     117             :     jvalue args[ 2 ];
     118             :     // get type class
     119           0 :     args[ 0 ].i = type->eTypeClass;
     120             :     JLocalAutoRef jo_type_class(
     121             :         jni, jni->CallStaticObjectMethodA(
     122             :             jni_info->m_class_TypeClass,
     123           0 :             jni_info->m_method_TypeClass_fromInt, args ) );
     124           0 :     jni.ensure_no_exception();
     125             :     // construct type
     126             :     JLocalAutoRef jo_type_name(
     127           0 :         jni, ustring_to_jstring( jni, type->pTypeName ) );
     128           0 :     args[ 0 ].l = jo_type_name.get();
     129           0 :     args[ 1 ].l = jo_type_class.get();
     130             :     jobject jo_type = jni->NewObjectA(
     131             :         jni_info->m_class_Type,
     132           0 :         jni_info->m_ctor_Type_with_Name_TypeClass, args );
     133           0 :     jni.ensure_no_exception();
     134           0 :     return jo_type;
     135             : }
     136             : 
     137          21 : inline jobject compute_oid( JNI_context const & jni, jobject jo )
     138             : {
     139          21 :     JNI_info const * jni_info = jni.get_info();
     140             :     jvalue arg;
     141          21 :     arg.l= jo;
     142             :     jobject jo_oid = jni->CallStaticObjectMethodA(
     143             :         jni_info->m_class_UnoRuntime,
     144          21 :         jni_info->m_method_UnoRuntime_generateOid, &arg );
     145          21 :     jni.ensure_no_exception();
     146          21 :     return jo_oid;
     147             : }
     148             : 
     149             : }
     150             : 
     151             : #endif
     152             : 
     153             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */