ucb/source/ucp/ext/ucpext_provider.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 "ucpext_provider.hxx"
  21 #include "ucpext_content.hxx"
  22
  23 #include <ucbhelper/contentidentifier.hxx>
  24 #include <osl/diagnose.h>
  25 #include <osl/mutex.hxx>
  26 #include <comphelper/componentcontext.hxx>
  27 #include <rtl/ustrbuf.hxx>
  28
  29 //......................................................................................................................
  30 namespace ucb { namespace ucp { namespace ext
  31 {
  32 //......................................................................................................................
  33
  34     using ::com::sun::star::uno::Reference;
  35     using ::com::sun::star::uno::XInterface;
  36     using ::com::sun::star::uno::UNO_QUERY;
  37     using ::com::sun::star::uno::UNO_QUERY_THROW;
  38     using ::com::sun::star::uno::UNO_SET_THROW;
  39     using ::com::sun::star::uno::Exception;
  40     using ::com::sun::star::uno::RuntimeException;
  41     using ::com::sun::star::uno::Any;
  42     using ::com::sun::star::uno::makeAny;
  43     using ::com::sun::star::uno::Sequence;
  44     using ::com::sun::star::uno::Type;
  45     using ::com::sun::star::lang::XMultiServiceFactory;
  46     using ::com::sun::star::ucb::XContentIdentifier;
  47     using ::com::sun::star::ucb::IllegalIdentifierException;
  48     using ::com::sun::star::ucb::XContent;
  49     using ::com::sun::star::uno::XComponentContext;
  50
  51     //==================================================================================================================
  52     //= ContentProvider
  53     //==================================================================================================================
  54     //------------------------------------------------------------------------------------------------------------------
  55     ContentProvider::ContentProvider( const Reference< XComponentContext >& rxContext )
  56         :ContentProvider_Base( rxContext )
  57     {
  58     }
  59
  60     //------------------------------------------------------------------------------------------------------------------
  61     ContentProvider::~ContentProvider()
  62     {
  63     }
  64
  65     //------------------------------------------------------------------------------------------------------------------
  66     OUString SAL_CALL ContentProvider::getImplementationName_static() throw (RuntimeException)
  67     {
  68         return OUString(  "org.openoffice.comp.ucp.ext.ContentProvider"  );
  69     }
  70
  71     //------------------------------------------------------------------------------------------------------------------
  72     OUString SAL_CALL ContentProvider::getImplementationName() throw (RuntimeException)
  73     {
  74         return getImplementationName_static();
  75     }
  76
  77     //------------------------------------------------------------------------------------------------------------------
  78     Sequence< OUString > SAL_CALL ContentProvider::getSupportedServiceNames_static(  ) throw (RuntimeException)
  79     {
  80         Sequence< OUString > aServiceNames(2);
  81         aServiceNames[0] = OUString(  "com.sun.star.ucb.ContentProvider"  );
  82         aServiceNames[1] = OUString(  "com.sun.star.ucb.ExtensionContentProvider"  );
  83         return aServiceNames;
  84     }
  85
  86     //------------------------------------------------------------------------------------------------------------------
  87     Sequence< OUString > SAL_CALL ContentProvider::getSupportedServiceNames(  ) throw (RuntimeException)
  88     {
  89         return getSupportedServiceNames_static();
  90     }
  91
  92     //------------------------------------------------------------------------------------------------------------------
  93     Reference< XInterface > ContentProvider::Create( const Reference< XComponentContext >& i_rContext )
  94     {
  95         return *( new ContentProvider( i_rContext ) );
  96     }
  97
  98     //------------------------------------------------------------------------------------------------------------------
  99     OUString ContentProvider::getRootURL()
 100     {
 101         return OUString(  "vnd.sun.star.extension://"  );
 102     }
 103
 104     //------------------------------------------------------------------------------------------------------------------
 105     OUString ContentProvider::getArtificialNodeContentType()
 106     {
 107         return OUString(  "application/vnd.sun.star.extension-content"  );
 108     }
 109
 110     //------------------------------------------------------------------------------------------------------------------
 111     namespace
 112     {
 113         void lcl_ensureAndTransfer( OUString& io_rIdentifierFragment, OUStringBuffer& o_rNormalization, const sal_Unicode i_nLeadingChar )
 114         {
 115             if ( ( io_rIdentifierFragment.isEmpty() ) || ( io_rIdentifierFragment[0] != i_nLeadingChar ) )
 116                 throw IllegalIdentifierException();
 117             io_rIdentifierFragment = io_rIdentifierFragment.copy( 1 );
 118             o_rNormalization.append( i_nLeadingChar );
 119         }
 120     }
 121
 122     //------------------------------------------------------------------------------------------------------------------
 123     Reference< XContent > SAL_CALL ContentProvider::queryContent( const Reference< XContentIdentifier  >& i_rIdentifier )
 124         throw( IllegalIdentifierException, RuntimeException )
 125     {
 126         // Check URL scheme...
 127         const OUString sScheme( "vnd.sun.star.extension" );
 128         if ( !i_rIdentifier->getContentProviderScheme().equalsIgnoreAsciiCase( sScheme ) )
 129             throw IllegalIdentifierException();
 130
 131         // normalize the identifier
 132         const OUString sIdentifier( i_rIdentifier->getContentIdentifier() );
 133
 134         // the scheme needs to be lower-case
 135         OUStringBuffer aComposer;
 136         aComposer.append( sIdentifier.copy( 0, sScheme.getLength() ).toAsciiLowerCase() );
 137
 138         // one : is required after the scheme
 139         OUString sRemaining( sIdentifier.copy( sScheme.getLength() ) );
 140         lcl_ensureAndTransfer( sRemaining, aComposer, ':' );
 141
 142         // and at least one /
 143         lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
 144
 145         // the normalized form requires one additional /, but we also accept identifiers which don't have it
 146         if ( sRemaining.isEmpty() )
 147         {
 148             // the root content is a special case, it requires ///
 149             aComposer.appendAscii( "//" );
 150         }
 151         else
 152         {
 153             if ( sRemaining[0] != '/' )
 154             {
 155                 aComposer.append( sal_Unicode( '/' ) );
 156                 aComposer.append( sRemaining );
 157             }
 158             else
 159             {
 160                 lcl_ensureAndTransfer( sRemaining, aComposer, '/' );
 161                 // by now, we moved "vnd.sun.star.extension://" from the URL to aComposer
 162                 if ( sRemaining.isEmpty() )
 163                 {
 164                     // again, it's the root content, but one / is missing
 165                     aComposer.append( sal_Unicode( '/' ) );
 166                 }
 167                 else
 168                 {
 169                     aComposer.append( sRemaining );
 170                 }
 171             }
 172         }
 173         const Reference< XContentIdentifier > xNormalizedIdentifier( new ::ucbhelper::ContentIdentifier( aComposer.makeStringAndClear() ) );
 174
 175         ::osl::MutexGuard aGuard( m_aMutex );
 176
 177         // check if a content with given id already exists...
 178         Reference< XContent > xContent( queryExistingContent( xNormalizedIdentifier ).get() );
 179         if ( xContent.is() )
 180             return xContent;
 181
 182         // create a new content
 183         xContent = new Content( m_xContext, this, xNormalizedIdentifier );
 184         if ( !xContent->getIdentifier().is() )
 185             throw IllegalIdentifierException();
 186
 187         registerNewContent( xContent );
 188         return xContent;
 189     }
 190
 191 //......................................................................................................................
 192 } } }   // namespace ucb::ucp::ext
 193 //......................................................................................................................
 194
 195 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */