jvmaccess/source/classpath.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 "jvmaccess/classpath.hxx"
  23
  24 #include <vector>
  25
  26 #include "com/sun/star/lang/IllegalArgumentException.hpp"
  27 #include "com/sun/star/uno/Any.hxx"
  28 #include "com/sun/star/uno/Reference.hxx"
  29 #include "com/sun/star/uno/RuntimeException.hpp"
  30 #include "com/sun/star/uno/XComponentContext.hpp"
  31 #include "com/sun/star/uno/XInterface.hpp"
  32 #include "com/sun/star/uri/UriReferenceFactory.hpp"
  33 #include "com/sun/star/uri/XVndSunStarExpandUrlReference.hpp"
  34 #include "com/sun/star/util/theMacroExpander.hpp"
  35 #include "osl/diagnose.h"
  36 #include "rtl/ustring.hxx"
  37 #include "sal/types.h"
  38
  39 #include "jni.h"
  40
  41 void * ::jvmaccess::ClassPath::doTranslateToUrls(
  42     css::uno::Reference< css::uno::XComponentContext > const & context,
  43     void * environment, OUString const & classPath)
  44 {
  45     OSL_ASSERT(context.is() && environment != 0);
  46     ::JNIEnv * const env = static_cast< ::JNIEnv * >(environment);
  47     jclass classUrl(env->FindClass("java/net/URL"));
  48     if (classUrl == 0) {
  49         return 0;
  50     }
  51     jmethodID ctorUrl(
  52         env->GetMethodID(classUrl, "<init>", "(Ljava/lang/String;)V"));
  53     if (ctorUrl == 0) {
  54         return 0;
  55     }
  56     ::std::vector< jobject > urls;
  57     for (::sal_Int32 i = 0; i != -1;) {
  58         OUString url(classPath.getToken(0, ' ', i));
  59         if (!url.isEmpty()) {
  60             css::uno::Reference< css::uri::XVndSunStarExpandUrlReference >
  61                 expUrl(
  62                     css::uri::UriReferenceFactory::create(context)->parse(url),
  63                     css::uno::UNO_QUERY);
  64             if (expUrl.is()) {
  65                 css::uno::Reference< css::util::XMacroExpander > expander =
  66                     css::util::theMacroExpander::get(context);
  67                 try {
  68                     url = expUrl->expand( expander );
  69                 } catch (const css::lang::IllegalArgumentException & e) {
  70                     throw css::uno::RuntimeException(
  71                         (OUString(
  72                                 "com.sun.star.lang.IllegalArgumentException: ")
  73                          + e.Message),
  74                         css::uno::Reference< css::uno::XInterface >());
  75                 }
  76             }
  77             jvalue arg;
  78             arg.l = env->NewString(
  79                 static_cast< jchar const * >(url.getStr()),
  80                 static_cast< jsize >(url.getLength()));
  81             if (arg.l == 0) {
  82                 return 0;
  83             }
  84             jobject o(env->NewObjectA(classUrl, ctorUrl, &arg));
  85             if (o == 0) {
  86                 return 0;
  87             }
  88             urls.push_back(o);
  89         }
  90     }
  91     jobjectArray result = env->NewObjectArray(
  92         static_cast< jsize >(urls.size()), classUrl, 0);
  93         // static_cast is ok, as each element of urls occupied at least one
  94         // character of the OUString classPath
  95     if (result == 0) {
  96         return 0;
  97     }
  98     jsize idx = 0;
  99     for (std::vector< jobject >::iterator i(urls.begin()); i != urls.end(); ++i)
 100     {
 101         env->SetObjectArrayElement(result, idx++, *i);
 102     }
 103     return result;
 104 }
 105
 106 void * ::jvmaccess::ClassPath::doLoadClass(
 107     css::uno::Reference< css::uno::XComponentContext > const & context,
 108     void * environment, OUString const & classPath,
 109     OUString const & name)
 110 {
 111     OSL_ASSERT(context.is() && environment != 0);
 112     ::JNIEnv * const env = static_cast< ::JNIEnv * >(environment);
 113     jclass classLoader(env->FindClass("java/net/URLClassLoader"));
 114     if (classLoader == 0) {
 115         return 0;
 116     }
 117     jmethodID ctorLoader(
 118         env->GetMethodID(classLoader, "<init>", "([Ljava/net/URL;)V"));
 119     if (ctorLoader == 0) {
 120         return 0;
 121     }
 122     jvalue arg;
 123     arg.l = translateToUrls(context, env, classPath);
 124     if (arg.l == 0) {
 125         return 0;
 126     }
 127     jobject cl = env->NewObjectA(classLoader, ctorLoader, &arg);
 128     if (cl == 0) {
 129         return 0;
 130     }
 131     jmethodID methLoadClass(
 132         env->GetMethodID(
 133             classLoader, "loadClass", "(Ljava/lang/String;)Ljava/lang/Class;"));
 134     if (methLoadClass == 0) {
 135         return 0;
 136     }
 137     arg.l = env->NewString(
 138         static_cast< jchar const * >(name.getStr()),
 139         static_cast< jsize >(name.getLength()));
 140     if (arg.l == 0) {
 141         return 0;
 142     }
 143     return env->CallObjectMethodA(cl, methLoadClass, &arg);
 144 }
 145
 146 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */