javaunohelper/source/bootstrap.cxx

   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 #include "sal/config.h"
  21
  22 #include "osl/diagnose.h"
  23
  24 #include "rtl/alloc.h"
  25 #include "rtl/bootstrap.hxx"
  26 #include "rtl/string.hxx"
  27
  28 #include "uno/mapping.hxx"
  29 #include "uno/environment.hxx"
  30
  31 #include "cppuhelper/bootstrap.hxx"
  32
  33 #include "com/sun/star/lang/XComponent.hpp"
  34 #include "com/sun/star/lang/XSingleComponentFactory.hpp"
  35
  36 #include "jni.h"
  37 #include "jvmaccess/virtualmachine.hxx"
  38 #include "jvmaccess/unovirtualmachine.hxx"
  39
  40 #include "juhx-export-functions.hxx"
  41 #include "vm.hxx"
  42
  43 using namespace ::com::sun::star;
  44 using namespace ::com::sun::star::uno;
  45
  46 namespace javaunohelper
  47 {
  48
  49 inline OUString jstring_to_oustring( jstring jstr, JNIEnv * jni_env )
  50 {
  51     OSL_ASSERT( sizeof (sal_Unicode) == sizeof (jchar) );
  52     jsize len = jni_env->GetStringLength( jstr );
  53     rtl_uString * ustr =
  54         (rtl_uString *)rtl_allocateMemory( sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) );
  55     jni_env->GetStringRegion( jstr, 0, len, ustr->buffer );
  56     OSL_ASSERT( JNI_FALSE == jni_env->ExceptionCheck() );
  57     ustr->refCount = 1;
  58     ustr->length = len;
  59     ustr->buffer[ len ] = '\0';
  60     return OUString( ustr, SAL_NO_ACQUIRE );
  61 }
  62
  63 }
  64
  65 //==================================================================================================
  66 jobject Java_com_sun_star_comp_helper_Bootstrap_cppuhelper_1bootstrap(
  67     JNIEnv * jni_env, SAL_UNUSED_PARAMETER jclass, jstring juno_rc, jobjectArray jpairs,
  68     jobject loader )
  69 {
  70     try
  71     {
  72         if (0 != jpairs)
  73         {
  74             jsize nPos = 0, len = jni_env->GetArrayLength( jpairs );
  75             while (nPos < len)
  76             {
  77                 // name
  78                 jstring jstr = (jstring)jni_env->GetObjectArrayElement( jpairs, nPos );
  79                 if (JNI_FALSE != jni_env->ExceptionCheck())
  80                 {
  81                     jni_env->ExceptionClear();
  82                     throw RuntimeException(
  83                         "index out of bounds?!", Reference< XInterface >() );
  84                 }
  85                 if (0 != jstr)
  86                 {
  87                     OUString name( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
  88                     // value
  89                     jstr = (jstring)jni_env->GetObjectArrayElement( jpairs, nPos +1 );
  90                     if (JNI_FALSE != jni_env->ExceptionCheck())
  91                     {
  92                         jni_env->ExceptionClear();
  93                         throw RuntimeException(
  94                             "index out of bounds?!", Reference< XInterface >() );
  95                     }
  96                     if (0 != jstr)
  97                     {
  98                         OUString value( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
  99
 100                         // set bootstrap parameter
 101                         ::rtl::Bootstrap::set( name, value );
 102                     }
 103                 }
 104                 nPos += 2;
 105             }
 106         }
 107
 108         // bootstrap uno
 109         Reference< XComponentContext > xContext;
 110         if (0 == juno_rc)
 111         {
 112             xContext = ::cppu::defaultBootstrap_InitialComponentContext();
 113         }
 114         else
 115         {
 116             OUString uno_rc( ::javaunohelper::jstring_to_oustring( juno_rc, jni_env ) );
 117             xContext = ::cppu::defaultBootstrap_InitialComponentContext( uno_rc );
 118         }
 119
 120         // create vm access
 121         ::rtl::Reference< ::jvmaccess::UnoVirtualMachine > vm_access(
 122             ::javaunohelper::create_vm_access( jni_env, loader ) );
 123         // wrap vm singleton entry
 124         xContext = ::javaunohelper::install_vm_singleton( xContext, vm_access );
 125
 126         // get uno envs
 127         OUString cpp_env_name = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
 128         OUString java_env_name = UNO_LB_JAVA;
 129         Environment java_env, cpp_env;
 130         uno_getEnvironment((uno_Environment **)&cpp_env, cpp_env_name.pData, NULL);
 131         uno_getEnvironment( (uno_Environment **)&java_env, java_env_name.pData, vm_access.get() );
 132
 133         // map to java
 134         Mapping mapping( cpp_env.get(), java_env.get() );
 135         if (! mapping.is())
 136         {
 137             Reference< lang::XComponent > xComp( xContext, UNO_QUERY );
 138             if (xComp.is())
 139                 xComp->dispose();
 140             throw RuntimeException(
 141                 "cannot get mapping C++ <-> Java!",
 142                 Reference< XInterface >() );
 143         }
 144
 145         jobject jret = (jobject)mapping.mapInterface( xContext.get(), ::getCppuType( &xContext ) );
 146         jobject jlocal = jni_env->NewLocalRef( jret );
 147         jni_env->DeleteGlobalRef( jret );
 148
 149         return jlocal;
 150     }
 151     catch (const RuntimeException & exc)
 152     {
 153         jclass c = jni_env->FindClass( "com/sun/star/uno/RuntimeException" );
 154         if (0 != c)
 155         {
 156             OString cstr( OUStringToOString(
 157                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 158             OSL_TRACE( __FILE__": forwarding RuntimeException: %s", cstr.getStr() );
 159             jni_env->ThrowNew( c, cstr.getStr() );
 160         }
 161     }
 162     catch (const Exception & exc)
 163     {
 164         jclass c = jni_env->FindClass( "com/sun/star/uno/Exception" );
 165         if (0 != c)
 166         {
 167             OString cstr( OUStringToOString(
 168                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 169             OSL_TRACE( __FILE__": forwarding Exception: %s", cstr.getStr() );
 170             jni_env->ThrowNew( c, cstr.getStr() );
 171         }
 172     }
 173
 174     return 0;
 175 }
 176
 177 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */