oox/source/core/relations.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 <oox/core/relations.hxx>
  21
  22 #include <rtl/ustrbuf.hxx>
  23 #include <oox/helper/helper.hxx>
  24
  25 namespace oox {
  26 namespace core {
  27
  28 namespace {
  29
  30 OUString lclRemoveFileName( const OUString& rPath )
  31 {
  32     return rPath.copy( 0, ::std::max< sal_Int32 >( rPath.lastIndexOf( '/' ), 0 ) );
  33 }
  34
  35 OUString lclAppendFileName( const OUString& rPath, const OUString& rFileName )
  36 {
  37     return rPath.isEmpty() ? rFileName :
  38         rPath + OUStringLiteral1('/') + rFileName;
  39 }
  40
  41 OUString createOfficeDocRelationTypeTransitional(const OUString& rType)
  42 {
  43     return "http://schemas.openxmlformats.org/officeDocument/2006/relationships/" + rType;
  44 }
  45
  46 OUString createOfficeDocRelationTypeStrict(const OUString& rType)
  47 {
  48     return "http://purl.oclc.org/ooxml/officeDocument/relationships/" + rType;
  49 }
  50
  51 }
  52
  53 Relations::Relations( const OUString& rFragmentPath )
  54     : maMap()
  55     , maFragmentPath( rFragmentPath )
  56 {
  57 }
  58
  59 const Relation* Relations::getRelationFromRelId( const OUString& rId ) const
  60 {
  61     ::std::map< OUString, Relation >::const_iterator aIt = maMap.find( rId );
  62     return (aIt == maMap.end()) ? nullptr : &aIt->second;
  63 }
  64
  65 const Relation* Relations::getRelationFromFirstType( const OUString& rType ) const
  66 {
  67     for (auto const& elem : maMap)
  68         if( elem.second.maType.equalsIgnoreAsciiCase( rType ) )
  69             return &elem.second;
  70     return nullptr;
  71 }
  72
  73 RelationsRef Relations::getRelationsFromTypeFromOfficeDoc( const OUString& rType ) const
  74 {
  75     RelationsRef xRelations( new Relations( maFragmentPath ) );
  76     for (auto const& elem : maMap)
  77         if( elem.second.maType.equalsIgnoreAsciiCase( createOfficeDocRelationTypeTransitional(rType) ) ||
  78                 elem.second.maType.equalsIgnoreAsciiCase( createOfficeDocRelationTypeStrict(rType) ))
  79             xRelations->maMap[ elem.first ] = elem.second;
  80     return xRelations;
  81 }
  82
  83 OUString Relations::getExternalTargetFromRelId( const OUString& rRelId ) const
  84 {
  85     const Relation* pRelation = getRelationFromRelId( rRelId );
  86     return (pRelation && pRelation->mbExternal) ? pRelation->maTarget : OUString();
  87 }
  88
  89 OUString Relations::getInternalTargetFromRelId( const OUString& rRelId ) const
  90 {
  91     const Relation* pRelation = getRelationFromRelId( rRelId );
  92     return (pRelation && !pRelation->mbExternal) ? pRelation->maTarget : OUString();
  93 }
  94
  95 OUString Relations::getFragmentPathFromRelation( const Relation& rRelation ) const
  96 {
  97     // no target, no fragment path
  98     if( rRelation.mbExternal || rRelation.maTarget.isEmpty() )
  99         return OUString();
 100
 101     // absolute target: return it without leading slash (#i100978)
 102     if( rRelation.maTarget[ 0 ] == '/' )
 103         return rRelation.maTarget.copy( 1 );
 104
 105     // empty fragment path: return target
 106     if( maFragmentPath.isEmpty() )
 107         return rRelation.maTarget;
 108
 109     // resolve relative target path according to base path
 110     OUString aPath = lclRemoveFileName( maFragmentPath );
 111     sal_Int32 nStartPos = 0;
 112     while( nStartPos < rRelation.maTarget.getLength() )
 113     {
 114         sal_Int32 nSepPos = rRelation.maTarget.indexOf( '/', nStartPos );
 115         if( nSepPos < 0 ) nSepPos = rRelation.maTarget.getLength();
 116         // append next directory name from aTarget to aPath, or remove last directory on '../'
 117         if( (nStartPos + 2 == nSepPos) && (rRelation.maTarget[ nStartPos ] == '.') && (rRelation.maTarget[ nStartPos + 1 ] == '.') )
 118             aPath = lclRemoveFileName( aPath );
 119         else
 120             aPath = lclAppendFileName( aPath, rRelation.maTarget.copy( nStartPos, nSepPos - nStartPos ) );
 121         // move nStartPos to next directory name
 122         nStartPos = nSepPos + 1;
 123     }
 124
 125     return aPath;
 126 }
 127
 128 OUString Relations::getFragmentPathFromRelId( const OUString& rRelId ) const
 129 {
 130     const Relation* pRelation = getRelationFromRelId( rRelId );
 131     return pRelation ? getFragmentPathFromRelation( *pRelation ) : OUString();
 132 }
 133
 134 OUString Relations::getFragmentPathFromFirstType( const OUString& rType ) const
 135 {
 136     const Relation* pRelation = getRelationFromFirstType( rType );
 137     return pRelation ? getFragmentPathFromRelation( *pRelation ) : OUString();
 138 }
 139
 140 OUString Relations::getFragmentPathFromFirstTypeFromOfficeDoc( const OUString& rType ) const
 141 {
 142     OUString aTransitionalType(createOfficeDocRelationTypeTransitional(rType));
 143     const Relation* pRelation = getRelationFromFirstType( aTransitionalType );
 144     if(!pRelation)
 145     {
 146         OUString aStrictType = createOfficeDocRelationTypeStrict(rType);
 147         pRelation = getRelationFromFirstType( aStrictType );
 148     }
 149     return pRelation ? getFragmentPathFromRelation( *pRelation ) : OUString();
 150 }
 151
 152 } // namespace core
 153 } // namespace oox
 154
 155 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */