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
  21 /*******************************************************************
  22  Includes
  23  ******************************************************************/
  24
  25 #include "path_helper.hxx"
  26 #include <osl/diagnose.h>
  27 #include <rtl/ustring.hxx>
  28
  29 #include <algorithm>
  30 #include <wchar.h>
  31
  32 /*******************************************************************
  33  Constants
  34  ******************************************************************/
  35
  36 const rtl::OUString BACKSLASH ("\\");
  37 const rtl::OUString SLASH     ("/");
  38
  39 /*******************************************************************
  40  osl_systemPathEnsureSeparator
  41  ******************************************************************/
  42
  43 void osl_systemPathEnsureSeparator(/*inout*/ rtl_uString** ppustrPath)
  44 {
  45     OSL_PRECOND(ppustrPath && (NULL != *ppustrPath), \
  46                 "osl_systemPathEnsureSeparator: Invalid parameter");
  47
  48      rtl::OUString path(*ppustrPath);
  49     sal_Int32     i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
  50
  51     if (i < (path.getLength()-1))
  52     {
  53         path += BACKSLASH;
  54         rtl_uString_assign(ppustrPath, path.pData);
  55     }
  56
  57     OSL_POSTCOND(path.endsWith(BACKSLASH), \
  58                  "osl_systemPathEnsureSeparator: Post condition failed");
  59 }
  60
  61 /*******************************************************************
  62  osl_systemPathRemoveSeparator
  63  ******************************************************************/
  64
  65 void SAL_CALL osl_systemPathRemoveSeparator(/*inout*/ rtl_uString** ppustrPath)
  66 {
  67     rtl::OUString path(*ppustrPath);
  68
  69     if (!osl::systemPathIsLogicalDrivePattern(path))
  70     {
  71         sal_Int32 i = std::max<sal_Int32>(path.lastIndexOf(BACKSLASH), path.lastIndexOf(SLASH));
  72
  73         if (i > -1 && (i == (path.getLength() - 1)))
  74         {
  75             path = rtl::OUString(path.getStr(), path.getLength() - 1);
  76             rtl_uString_assign(ppustrPath, path.pData);
  77         }
  78     }
  79 }
  80
  81 /*******************************************************************
  82  osl_is_logical_drive_pattern
  83  ******************************************************************/
  84
  85 // is [A-Za-z]:[/|\]\0
  86 const sal_Char* LDP                    = ":";
  87 const sal_Char* LDP_WITH_BACKSLASH     = ":\\";
  88 const sal_Char* LDP_WITH_SLASH         = ":/";
  89
  90 // degenerated case returned by the Windows FileOpen dialog
  91 // when someone enters for instance "x:filename", the Win32
  92 // API accepts this case
  93 const sal_Char* LDP_WITH_DOT_BACKSLASH = ":.\\";
  94
  95 sal_Int32 osl_systemPathIsLogicalDrivePattern(/*in*/ const rtl_uString* pustrPath)
  96 {
  97     const sal_Unicode* p = rtl_uString_getStr(const_cast<rtl_uString*>(pustrPath));
  98     if (iswalpha(*p++))
  99     {
 100         return ((0 == rtl_ustr_ascii_compare(p, LDP)) ||
 101                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_BACKSLASH)) ||
 102                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_SLASH)) ||
 103                 (0 == rtl_ustr_ascii_compare(p, LDP_WITH_DOT_BACKSLASH)));
 104     }
 105     return 0;
 106 }
 107
 108
 109 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */