ucb/source/ucp/expand/ucpexpand.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
  21 #include "rtl/uri.hxx"
  22 #include "osl/mutex.hxx"
  23 #include "cppuhelper/compbase2.hxx"
  24 #include "cppuhelper/factory.hxx"
  25 #include "cppuhelper/implementationentry.hxx"
  26 #include <cppuhelper/supportsservice.hxx>
  27 #include "ucbhelper/content.hxx"
  28 #include "com/sun/star/uno/XComponentContext.hpp"
  29 #include "com/sun/star/lang/DisposedException.hpp"
  30 #include "com/sun/star/lang/XServiceInfo.hpp"
  31 #include "com/sun/star/lang/XMultiServiceFactory.hpp"
  32 #include "com/sun/star/registry/XRegistryKey.hpp"
  33 #include "com/sun/star/util/theMacroExpander.hpp"
  34 #include "com/sun/star/ucb/XContentProvider.hpp"
  35
  36 #define EXPAND_PROTOCOL "vnd.sun.star.expand"
  37 #define ARLEN(x) sizeof (x) / sizeof *(x)
  38
  39
  40 using namespace ::com::sun::star;
  41
  42 namespace
  43 {
  44
  45 struct MutexHolder
  46 {
  47     mutable ::osl::Mutex m_mutex;
  48 };
  49
  50 typedef ::cppu::WeakComponentImplHelper2<
  51     lang::XServiceInfo, ucb::XContentProvider > t_impl_helper;
  52
  53 //==============================================================================
  54 class ExpandContentProviderImpl : protected MutexHolder, public t_impl_helper
  55 {
  56     uno::Reference< uno::XComponentContext > m_xComponentContext;
  57     uno::Reference< util::XMacroExpander >   m_xMacroExpander;
  58     OUString expandUri(
  59         uno::Reference< ucb::XContentIdentifier > const & xIdentifier ) const;
  60
  61 protected:
  62     inline void check() const;
  63     virtual void SAL_CALL disposing();
  64
  65 public:
  66     inline ExpandContentProviderImpl(
  67         uno::Reference< uno::XComponentContext > const & xComponentContext )
  68         : t_impl_helper( m_mutex ),
  69           m_xComponentContext( xComponentContext ),
  70           m_xMacroExpander( util::theMacroExpander::get(xComponentContext) )
  71         {}
  72     virtual ~ExpandContentProviderImpl() throw ();
  73
  74     // XServiceInfo
  75     virtual OUString SAL_CALL getImplementationName()
  76         throw (uno::RuntimeException);
  77     virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName )
  78         throw (uno::RuntimeException);
  79     virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames()
  80         throw (uno::RuntimeException);
  81
  82     // XContentProvider
  83     virtual uno::Reference< ucb::XContent > SAL_CALL queryContent(
  84         uno::Reference< ucb::XContentIdentifier > const & xIdentifier )
  85         throw (ucb::IllegalIdentifierException, uno::RuntimeException);
  86     virtual sal_Int32 SAL_CALL compareContentIds(
  87         uno::Reference< ucb::XContentIdentifier > const & xId1,
  88         uno::Reference< ucb::XContentIdentifier > const & xId2 )
  89         throw (uno::RuntimeException);
  90 };
  91
  92 //______________________________________________________________________________
  93 inline void ExpandContentProviderImpl::check() const
  94 {
  95     // xxx todo guard?
  96 //     MutexGuard guard( m_mutex );
  97     if (rBHelper.bInDispose || rBHelper.bDisposed)
  98     {
  99         throw lang::DisposedException(
 100             "expand content provider instance has "
 101             "already been disposed!",
 102             static_cast< OWeakObject * >(
 103                 const_cast< ExpandContentProviderImpl * >(this) ) );
 104     }
 105 }
 106
 107 //______________________________________________________________________________
 108 ExpandContentProviderImpl::~ExpandContentProviderImpl() throw ()
 109 {
 110 }
 111
 112 //______________________________________________________________________________
 113 void ExpandContentProviderImpl::disposing()
 114 {
 115 }
 116
 117 //==============================================================================
 118 static uno::Reference< uno::XInterface > SAL_CALL create(
 119     uno::Reference< uno::XComponentContext > const & xComponentContext )
 120     SAL_THROW( (uno::Exception) )
 121 {
 122     return static_cast< ::cppu::OWeakObject * >(
 123         new ExpandContentProviderImpl( xComponentContext ) );
 124 }
 125
 126 //==============================================================================
 127 static OUString SAL_CALL implName()
 128 {
 129     return OUString("com.sun.star.comp.ucb.ExpandContentProvider");
 130 }
 131
 132 //==============================================================================
 133 static uno::Sequence< OUString > SAL_CALL supportedServices()
 134 {
 135     OUString names [] = {
 136         OUString("com.sun.star.ucb.ExpandContentProvider"),
 137         OUString("com.sun.star.ucb.ContentProvider")
 138     };
 139     return uno::Sequence< OUString >( names, ARLEN(names) );
 140 }
 141
 142 // XServiceInfo
 143 //______________________________________________________________________________
 144 OUString ExpandContentProviderImpl::getImplementationName()
 145     throw (uno::RuntimeException)
 146 {
 147     check();
 148     return implName();
 149 }
 150
 151 //______________________________________________________________________________
 152 uno::Sequence< OUString > ExpandContentProviderImpl::getSupportedServiceNames()
 153     throw (uno::RuntimeException)
 154 {
 155     check();
 156     return supportedServices();
 157 }
 158
 159 sal_Bool ExpandContentProviderImpl::supportsService(OUString const & serviceName )
 160     throw (uno::RuntimeException)
 161 {
 162     return cppu::supportsService(this, serviceName);
 163 }
 164
 165 OUString ExpandContentProviderImpl::expandUri(
 166     uno::Reference< ucb::XContentIdentifier > const & xIdentifier ) const
 167 {
 168     OUString uri( xIdentifier->getContentIdentifier() );
 169     if (!uri.startsWith(EXPAND_PROTOCOL ":"))
 170     {
 171         throw ucb::IllegalIdentifierException(
 172             "expected protocol " EXPAND_PROTOCOL "!",
 173             static_cast< OWeakObject * >(
 174                 const_cast< ExpandContentProviderImpl * >(this) ) );
 175     }
 176     // cut protocol
 177     OUString str( uri.copy( sizeof (EXPAND_PROTOCOL ":") -1 ) );
 178     // decode uric class chars
 179     str = ::rtl::Uri::decode(
 180         str, rtl_UriDecodeWithCharset, RTL_TEXTENCODING_UTF8 );
 181     // expand macro string
 182     return m_xMacroExpander->expandMacros( str );
 183 }
 184
 185 // XContentProvider
 186 //______________________________________________________________________________
 187 uno::Reference< ucb::XContent > ExpandContentProviderImpl::queryContent(
 188     uno::Reference< ucb::XContentIdentifier > const & xIdentifier )
 189     throw (ucb::IllegalIdentifierException, uno::RuntimeException)
 190 {
 191     check();
 192     OUString uri( expandUri( xIdentifier ) );
 193
 194     ::ucbhelper::Content ucb_content;
 195     if (::ucbhelper::Content::create(
 196             uri, uno::Reference< ucb::XCommandEnvironment >(),
 197             m_xComponentContext, ucb_content ))
 198     {
 199         return ucb_content.get();
 200     }
 201     else
 202     {
 203         return uno::Reference< ucb::XContent >();
 204     }
 205 }
 206
 207 //______________________________________________________________________________
 208 sal_Int32 ExpandContentProviderImpl::compareContentIds(
 209     uno::Reference< ucb::XContentIdentifier > const & xId1,
 210     uno::Reference< ucb::XContentIdentifier > const & xId2 )
 211     throw (uno::RuntimeException)
 212 {
 213     check();
 214     try
 215     {
 216         OUString uri1( expandUri( xId1 ) );
 217         OUString uri2( expandUri( xId2 ) );
 218         return uri1.compareTo( uri2 );
 219     }
 220     catch (const ucb::IllegalIdentifierException & exc)
 221     {
 222         (void) exc; // unused
 223         OSL_FAIL(
 224             OUStringToOString(
 225                 exc.Message, RTL_TEXTENCODING_UTF8 ).getStr() );
 226         return -1;
 227     }
 228 }
 229
 230 static const ::cppu::ImplementationEntry s_entries [] =
 231 {
 232     {
 233         create,
 234         implName,
 235         supportedServices,
 236         ::cppu::createSingleComponentFactory,
 237         0, 0
 238     },
 239     { 0, 0, 0, 0, 0, 0 }
 240 };
 241
 242 }
 243
 244 extern "C"
 245 {
 246
 247 SAL_DLLPUBLIC_EXPORT void * SAL_CALL ucpexpand1_component_getFactory(
 248     const sal_Char * pImplName,
 249     lang::XMultiServiceFactory * pServiceManager,
 250     registry::XRegistryKey * pRegistryKey )
 251 {
 252     return ::cppu::component_getFactoryHelper(
 253         pImplName, pServiceManager, pRegistryKey, s_entries );
 254 }
 255
 256 }
 257
 258 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */