javaunohelper/source/bootstrap.cxx

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  28
  29
  30 #include "osl/diagnose.h"
  31
  32 #include "rtl/alloc.h"
  33 #include "rtl/bootstrap.hxx"
  34 #include "rtl/string.hxx"
  35
  36 #include "uno/mapping.hxx"
  37 #include "uno/environment.hxx"
  38
  39 #include "cppuhelper/bootstrap.hxx"
  40
  41 #include "com/sun/star/lang/XComponent.hpp"
  42 #include "com/sun/star/lang/XSingleComponentFactory.hpp"
  43
  44 #include "jni.h"
  45 #include "jvmaccess/virtualmachine.hxx"
  46 #include "jvmaccess/unovirtualmachine.hxx"
  47
  48 #include "vm.hxx"
  49
  50 #define OUSTR(x) ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(x) )
  51
  52
  53 using namespace ::com::sun::star;
  54 using namespace ::com::sun::star::uno;
  55 using ::rtl::OString;
  56 using ::rtl::OUString;
  57
  58 namespace javaunohelper
  59 {
  60
  61 inline ::rtl::OUString jstring_to_oustring( jstring jstr, JNIEnv * jni_env )
  62 {
  63     OSL_ASSERT( sizeof (sal_Unicode) == sizeof (jchar) );
  64     jsize len = jni_env->GetStringLength( jstr );
  65     rtl_uString * ustr =
  66         (rtl_uString *)rtl_allocateMemory( sizeof (rtl_uString) + (len * sizeof (sal_Unicode)) );
  67     jni_env->GetStringRegion( jstr, 0, len, ustr->buffer );
  68     OSL_ASSERT( JNI_FALSE == jni_env->ExceptionCheck() );
  69     ustr->refCount = 1;
  70     ustr->length = len;
  71     ustr->buffer[ len ] = '\0';
  72     return ::rtl::OUString( ustr, SAL_NO_ACQUIRE );
  73 }
  74
  75 }
  76
  77 //==================================================================================================
  78 extern "C" JNIEXPORT jobject JNICALL Java_com_sun_star_comp_helper_Bootstrap_cppuhelper_1bootstrap(
  79     JNIEnv * jni_env, SAL_UNUSED_PARAMETER jclass, jstring juno_rc, jobjectArray jpairs,
  80     jobject loader )
  81 {
  82     try
  83     {
  84         if (0 != jpairs)
  85         {
  86             jsize nPos = 0, len = jni_env->GetArrayLength( jpairs );
  87             while (nPos < len)
  88             {
  89                 // name
  90                 jstring jstr = (jstring)jni_env->GetObjectArrayElement( jpairs, nPos );
  91                 if (JNI_FALSE != jni_env->ExceptionCheck())
  92                 {
  93                     jni_env->ExceptionClear();
  94                     throw RuntimeException(
  95                         OUSTR("index out of bounds?!"), Reference< XInterface >() );
  96                 }
  97                 if (0 != jstr)
  98                 {
  99                     OUString name( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
 100                     // value
 101                     jstr = (jstring)jni_env->GetObjectArrayElement( jpairs, nPos +1 );
 102                     if (JNI_FALSE != jni_env->ExceptionCheck())
 103                     {
 104                         jni_env->ExceptionClear();
 105                         throw RuntimeException(
 106                             OUSTR("index out of bounds?!"), Reference< XInterface >() );
 107                     }
 108                     if (0 != jstr)
 109                     {
 110                         OUString value( ::javaunohelper::jstring_to_oustring( jstr, jni_env ) );
 111
 112                         // set bootstrap parameter
 113                         ::rtl::Bootstrap::set( name, value );
 114                     }
 115                 }
 116                 nPos += 2;
 117             }
 118         }
 119
 120         // bootstrap uno
 121         Reference< XComponentContext > xContext;
 122         if (0 == juno_rc)
 123         {
 124             xContext = ::cppu::defaultBootstrap_InitialComponentContext();
 125         }
 126         else
 127         {
 128             OUString uno_rc( ::javaunohelper::jstring_to_oustring( juno_rc, jni_env ) );
 129             xContext = ::cppu::defaultBootstrap_InitialComponentContext( uno_rc );
 130         }
 131
 132         // create vm access
 133         ::rtl::Reference< ::jvmaccess::UnoVirtualMachine > vm_access(
 134             ::javaunohelper::create_vm_access( jni_env, loader ) );
 135         // wrap vm singleton entry
 136         xContext = ::javaunohelper::install_vm_singleton( xContext, vm_access );
 137
 138         // get uno envs
 139         OUString cpp_env_name = OUSTR(CPPU_CURRENT_LANGUAGE_BINDING_NAME);
 140         OUString java_env_name = OUSTR(UNO_LB_JAVA);
 141         Environment java_env, cpp_env;
 142         uno_getEnvironment((uno_Environment **)&cpp_env, cpp_env_name.pData, NULL);
 143         uno_getEnvironment( (uno_Environment **)&java_env, java_env_name.pData, vm_access.get() );
 144
 145         // map to java
 146         Mapping mapping( cpp_env.get(), java_env.get() );
 147         if (! mapping.is())
 148         {
 149             Reference< lang::XComponent > xComp( xContext, UNO_QUERY );
 150             if (xComp.is())
 151                 xComp->dispose();
 152             throw RuntimeException(
 153                 OUSTR("cannot get mapping C++ <-> Java!"),
 154                 Reference< XInterface >() );
 155         }
 156
 157         jobject jret = (jobject)mapping.mapInterface( xContext.get(), ::getCppuType( &xContext ) );
 158         jobject jlocal = jni_env->NewLocalRef( jret );
 159         jni_env->DeleteGlobalRef( jret );
 160
 161         return jlocal;
 162     }
 163     catch (const RuntimeException & exc)
 164     {
 165         jclass c = jni_env->FindClass( "com/sun/star/uno/RuntimeException" );
 166         if (0 != c)
 167         {
 168             OString cstr( ::rtl::OUStringToOString(
 169                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 170             OSL_TRACE( __FILE__": forwarding RuntimeException: %s", cstr.getStr() );
 171             jni_env->ThrowNew( c, cstr.getStr() );
 172         }
 173     }
 174     catch (const Exception & exc)
 175     {
 176         jclass c = jni_env->FindClass( "com/sun/star/uno/Exception" );
 177         if (0 != c)
 178         {
 179             OString cstr( ::rtl::OUStringToOString(
 180                               exc.Message, RTL_TEXTENCODING_JAVA_UTF8 ) );
 181             OSL_TRACE( __FILE__": forwarding Exception: %s", cstr.getStr() );
 182             jni_env->ThrowNew( c, cstr.getStr() );
 183         }
 184     }
 185
 186     return 0;
 187 }
 188
 189 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */