ucb/source/ucp/hierarchy/hierarchyuri.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
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   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
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  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 /**************************************************************************
  22                                 TODO
  23  **************************************************************************
  24
  25  *************************************************************************/
  26
  27 #include "hierarchyuri.hxx"
  28
  29 using namespace hierarchy_ucp;
  30
  31 constexpr OUString HIERARCHY_URL_SCHEME = u"vnd.sun.star.hier"_ustr;
  32 constexpr OUString DEFAULT_DATA_SOURCE_SERVICE =
  33                     u"com.sun.star.ucb.DefaultHierarchyDataSource"_ustr;
  34
  35
  36 // HierarchyUri Implementation.
  37
  38
  39 void HierarchyUri::init() const
  40 {
  41     // Already inited?
  42     if ( m_aUri.isEmpty() || !m_aPath.isEmpty() )
  43         return;
  44
  45     // Note: Maybe it's a re-init, setUri only resets m_aPath!
  46     m_aService.clear();
  47     m_aParentUri.clear();
  48
  49     // URI must match at least: <scheme>:
  50     if ( m_aUri.getLength() < HIERARCHY_URL_SCHEME.getLength() + 1 )
  51     {
  52         // error, but remember that we did an init().
  53         m_aPath = "/";
  54         return;
  55     }
  56
  57     // Scheme is case insensitive.
  58     OUString aScheme
  59         = m_aUri.copy( 0, HIERARCHY_URL_SCHEME.getLength() ).toAsciiLowerCase();
  60     if ( aScheme == HIERARCHY_URL_SCHEME )
  61     {
  62         m_aUri = m_aUri.replaceAt( 0, aScheme.getLength(), aScheme );
  63
  64         sal_Int32 nPos = 0;
  65
  66         // If the URI has no service specifier, insert default service.
  67         // This is for backward compatibility and for convenience.
  68
  69         if ( m_aUri.getLength() == HIERARCHY_URL_SCHEME.getLength() + 1 )
  70         {
  71             // root folder URI without path and service specifier.
  72             m_aUri += "//" + DEFAULT_DATA_SOURCE_SERVICE + "/";
  73             m_aService = DEFAULT_DATA_SOURCE_SERVICE ;
  74
  75             nPos = m_aUri.getLength() - 1;
  76         }
  77         else if ( ( m_aUri.getLength() == HIERARCHY_URL_SCHEME.getLength() + 2 )
  78                   &&
  79                   ( m_aUri[ HIERARCHY_URL_SCHEME.getLength() + 1 ] == '/' ) )
  80         {
  81             // root folder URI without service specifier.
  82             m_aUri += "/" + DEFAULT_DATA_SOURCE_SERVICE + "/";
  83             m_aService = DEFAULT_DATA_SOURCE_SERVICE;
  84
  85             nPos = m_aUri.getLength() - 1;
  86         }
  87         else if ( ( m_aUri.getLength() > HIERARCHY_URL_SCHEME.getLength() + 2 )
  88                   &&
  89                   ( m_aUri[ HIERARCHY_URL_SCHEME.getLength() + 2 ] != '/' ) )
  90         {
  91             // other (no root folder) URI without service specifier.
  92             m_aUri = m_aUri.replaceAt(
  93                         HIERARCHY_URL_SCHEME.getLength() + 2,
  94                         0,
  95                         rtl::Concat2View("/" + DEFAULT_DATA_SOURCE_SERVICE + "/") );
  96             m_aService = DEFAULT_DATA_SOURCE_SERVICE;
  97
  98             nPos
  99                 = HIERARCHY_URL_SCHEME.getLength() + 3 + m_aService.getLength();
 100         }
 101         else
 102         {
 103             // URI with service specifier.
 104             sal_Int32 nStart = HIERARCHY_URL_SCHEME.getLength() + 3;
 105
 106             // Here: - m_aUri has at least the form "<scheme>://"
 107             //       - nStart points to char after <scheme>:
 108
 109             // Only <scheme>:// ?
 110             if ( nStart == m_aUri.getLength() )
 111             {
 112                 // error, but remember that we did an init().
 113                 m_aPath = "/";
 114                 return;
 115             }
 116
 117             // Empty path segments?
 118             if ( m_aUri.indexOf("//", nStart) != -1 )
 119             {
 120                 // error, but remember that we did an init().
 121                 m_aPath = "/";
 122                 return;
 123             }
 124
 125             sal_Int32 nEnd = m_aUri.indexOf( '/', nStart );
 126
 127             // Only <scheme>:/// ?
 128             if ( nEnd == nStart )
 129             {
 130                 // error, but remember that we did an init().
 131                 m_aPath = "/";
 132                 return;
 133             }
 134
 135             if ( nEnd == -1 )
 136             {
 137                 // Trailing slash missing.
 138                 nEnd = m_aUri.getLength();
 139                 m_aUri += "/";
 140             }
 141
 142             m_aService = m_aUri.copy( nStart, nEnd - nStart );
 143
 144             nPos = nEnd;
 145         }
 146
 147         // Here: - m_aUri has at least the form "<scheme>://<service>/"
 148         //       - m_aService was set
 149         //       - m_aPath, m_aParentPath, m_aName not yet set
 150         //       - nPos points to slash after service specifier
 151
 152         // Remove trailing slash, if not a root folder URI.
 153         sal_Int32 nEnd = m_aUri.lastIndexOf( '/' );
 154         if ( ( nEnd > nPos ) && ( nEnd == ( m_aUri.getLength() - 1 ) ) )
 155             m_aUri = m_aUri.copy( 0, nEnd );
 156
 157         // Path (includes leading slash)
 158         m_aPath = m_aUri.copy( nPos );
 159
 160         // parent URI + name
 161         sal_Int32 nLastSlash = m_aUri.lastIndexOf( '/' );
 162         if ( ( nLastSlash != -1 ) &&
 163              ( nLastSlash != m_aUri.getLength() - 1 ) ) // root
 164         {
 165             m_aParentUri = m_aUri.copy( 0, nLastSlash );
 166         }
 167
 168         // success
 169         m_bValid = true;
 170     }
 171     else
 172     {
 173         // error, but remember that we did an init().
 174         m_aPath = "/";
 175     }
 176 }
 177
 178 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */