sal/osl/w32/path_helper.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 "path_helper.hxx"
  21 #include <osl/diagnose.h>
  22 #include <rtl/ustring.hxx>
  23 #include <sal/log.hxx>
  24
  25 #include <algorithm>
  26 #include <wchar.h>
  27
  28 const OUString BACKSLASH ("\\");
  29 const OUString SLASH     ("/");
  30
  31 void osl_systemPathEnsureSeparator(/*inout*/ rtl_uString** ppustrPath)
  32 {
  33     OSL_PRECOND(ppustrPath && (nullptr != *ppustrPath),
  34                 "osl_systemPathEnsureSeparator: Invalid parameter");
  35
  36      OUString path(*ppustrPath);
  37     sal_Int32     i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
  38
  39     if (i < (path.getLength()-1))
  40     {
  41         path += BACKSLASH;
  42         rtl_uString_assign(ppustrPath, path.pData);
  43     }
  44
  45     SAL_WARN_IF( !path.endsWith(BACKSLASH),
  46                  "sal.osl",
  47                  "osl_systemPathEnsureSeparator: Post condition failed");
  48 }
  49
  50 void osl_systemPathRemoveSeparator(/*inout*/ rtl_uString** ppustrPath)
  51 {
  52     OUString path(*ppustrPath);
  53
  54     if (!osl::systemPathIsLogicalDrivePattern(path))
  55     {
  56         sal_Int32 i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
  57
  58         if (i > -1 && (i == (path.getLength() - 1)))
  59         {
  60             path = OUString(path.getStr(), path.getLength() - 1);
  61             rtl_uString_assign(ppustrPath, path.pData);
  62         }
  63     }
  64 }
  65
  66 // is [A-Za-z]:[/|\]\0
  67 const sal_Char* const LDP                = ":";
  68 const sal_Char* const LDP_WITH_BACKSLASH = ":\\";
  69 const sal_Char* const LDP_WITH_SLASH     = ":/";
  70
  71 // degenerated case returned by the Windows FileOpen dialog
  72 // when someone enters for instance "x:filename", the Win32
  73 // API accepts this case
  74 const sal_Char* const LDP_WITH_DOT_BACKSLASH = ":.\\";
  75
  76 bool osl_systemPathIsLogicalDrivePattern(/*in*/ const rtl_uString* pustrPath)
  77 {
  78     const sal_Unicode* p = rtl_uString_getStr(const_cast<rtl_uString*>(pustrPath));
  79     if (iswalpha(*p++))
  80     {
  81         return ((0 == rtl_ustr_ascii_compare(p, LDP)) ||
  82                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_BACKSLASH)) ||
  83                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_SLASH)) ||
  84                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_DOT_BACKSLASH)));
  85     }
  86     return false;
  87 }
  88
  89 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */