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