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