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         static_cast<rtl_uString *>(rtl_allocateMemory( sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) ));
  56     jni_env->GetStringRegion( jstr, 0, len, ustr->buffer );
  57     OSL_ASSERT( !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 = static_cast<jstring>(jni_env->GetObjectArrayElement( jpairs, nPos ));
  80                 if (jni_env->ExceptionCheck())
  81                 {
  82                     jni_env->ExceptionClear();
  83                     throw RuntimeException( "index out of bounds?!" );
  84                 }
  85                 if (0 != jstr)
  86                 {
  87                     OUString name( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
  88                     // value
  89                     jstr = static_cast<jstring>(jni_env->GetObjectArrayElement( jpairs, nPos +1 ));
  90                     if (jni_env->ExceptionCheck())
  91                     {
  92                         jni_env->ExceptionClear();
  93                         throw RuntimeException( "index out of bounds?!" );
  94                     }
  95                     if (0 != jstr)
  96                     {
  97                         OUString value( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
  98
  99                         // set bootstrap parameter
 100                         ::rtl::Bootstrap::set( name, value );
 101                     }
 102                 }
 103                 nPos += 2;
 104             }
 105         }
 106
 107         // bootstrap uno
 108         Reference< XComponentContext > xContext;
 109         if (0 == juno_rc)
 110         {
 111             xContext = ::cppu::defaultBootstrap_InitialComponentContext();
 112         }
 113         else
 114         {
 115             OUString uno_rc( ::javaunohelper::jstring_to_oustring( juno_rc, jni_env ) );
 116             xContext = ::cppu::defaultBootstrap_InitialComponentContext( uno_rc );
 117         }
 118
 119         // create vm access
 120         ::rtl::Reference< ::jvmaccess::UnoVirtualMachine > vm_access(
 121             ::javaunohelper::create_vm_access( jni_env, loader ) );
 122         // wrap vm singleton entry
 123         xContext = ::javaunohelper::install_vm_singleton( xContext, vm_access );
 124
 125         // get uno envs
 126         OUString cpp_env_name = CPPU_CURRENT_LANGUAGE_BINDING_NAME;
 127         OUString java_env_name = UNO_LB_JAVA;
 128         Environment java_env, cpp_env;
 129         uno_getEnvironment(reinterpret_cast<uno_Environment **>(&cpp_env), cpp_env_name.pData, NULL);
 130         uno_getEnvironment(reinterpret_cast<uno_Environment **>(&java_env), java_env_name.pData, vm_access.get() );
 131
 132         // map to java
 133         Mapping mapping( cpp_env.get(), java_env.get() );
 134         if (! mapping.is())
 135         {
 136             Reference< lang::XComponent > xComp( xContext, UNO_QUERY );
 137             if (xComp.is())
 138                 xComp->dispose();
 139             throw RuntimeException("cannot get mapping C++ <-> Java!" );
 140         }
 141
 142         jobject jret = static_cast<jobject>(mapping.mapInterface( xContext.get(), cppu::UnoType<decltype(xContext)>::get() ));
 143         jobject jlocal = jni_env->NewLocalRef( jret );
 144         jni_env->DeleteGlobalRef( jret );
 145
 146         return jlocal;
 147     }
 148     catch (const RuntimeException & exc)
 149     {
 150         jclass c = jni_env->FindClass( "com/sun/star/uno/RuntimeException" );
 151         if (0 != c)
 152         {
 153             OString cstr( OUStringToOString(
 154                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 155             OSL_TRACE( __FILE__": forwarding RuntimeException: %s", cstr.getStr() );
 156             jni_env->ThrowNew( c, cstr.getStr() );
 157         }
 158     }
 159     catch (const Exception & exc)
 160     {
 161         jclass c = jni_env->FindClass( "com/sun/star/uno/Exception" );
 162         if (0 != c)
 163         {
 164             OString cstr( OUStringToOString(
 165                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 166             OSL_TRACE( __FILE__": forwarding Exception: %s", cstr.getStr() );
 167             jni_env->ThrowNew( c, cstr.getStr() );
 168         }
 169     }
 170
 171     return 0;
 172 }
 173
 174 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */