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