include/salhelper/linkhelper.hxx

   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
  10 /*
  11  * This file is part of LibreOffice published API.
  12  */
  13
  14 #ifndef INCLUDED_SALHELPER_LINKHELPER_HXX
  15 #define INCLUDED_SALHELPER_LINKHELPER_HXX
  16
  17 #include "rtl/ustring.hxx"
  18 #include "osl/file.hxx"
  19
  20 namespace salhelper
  21 {
  22     class SAL_WARN_UNUSED LinkResolver
  23     {
  24     public:
  25         osl::FileStatus m_aStatus;
  26
  27         LinkResolver(sal_uInt32 nMask)
  28             : m_aStatus(nMask |
  29                         osl_FileStatus_Mask_FileURL |
  30                         osl_FileStatus_Mask_Type |
  31                         osl_FileStatus_Mask_LinkTargetURL)
  32         {
  33         }
  34
  35         /** Resolve a file url if it's a symbolic link, to a maximum depth of
  36          *  nDepth and fill in m_aStatus with the requested ctor flags
  37          *
  38          *  @return osl::FileBase::E_None on success
  39          *
  40          *  @see DirectoryItem::getFileStatus
  41          */
  42         osl::FileBase::RC fetchFileStatus(const rtl::OUString &rURL,
  43             int nDepth = 128)
  44         {
  45             //In an ideal world this wouldn't be inline, but I want to use this
  46             //in jvmfwk hence salhelper, but salhelper is .map controlled and
  47             //getting all the mangled names right is a misery, moving it over
  48             //to visibility markup would drop per-symbol versioning
  49             osl::FileBase::RC eReturn;
  50
  51             osl::DirectoryItem item;
  52             rtl::OUString sURL(rURL);
  53             while ((eReturn = osl::DirectoryItem::get(sURL, item))
  54                   == osl::File::E_None)
  55             {
  56                 if (--nDepth == 0)
  57                 {
  58                     eReturn = osl::FileBase::E_MULTIHOP;
  59                     break;
  60                 }
  61                 eReturn = item.getFileStatus(m_aStatus);
  62                 if (eReturn != osl::File::E_None)
  63                     break;
  64                 if (m_aStatus.getFileType() != osl::FileStatus::Link)
  65                 {
  66                     eReturn = osl::FileBase::E_None;
  67                     break;
  68                 }
  69                 sURL = m_aStatus.getLinkTargetURL();
  70             }
  71
  72             return eReturn;
  73         }
  74     };
  75 }
  76
  77 #endif
  78
  79 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */