filter/source/placeware/tempfile.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 <osl/file.h>
  21 #include <sal/macros.h>
  22
  23 #if defined( UNX)
  24
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <osl/thread.h>
  28
  29 oslFileError SAL_CALL my_getTempDirURL( rtl_uString** pustrTempDir )
  30 {
  31     const char *pValue = getenv( "TEMP" );
  32
  33     if ( !pValue )
  34     {
  35         pValue = getenv( "TMP" );
  36         if ( !pValue )
  37         {
  38 #if defined(SOLARIS) || defined (LINUX)
  39             pValue = P_tmpdir;
  40 #else
  41             return osl_File_E_NOENT;
  42 #endif
  43         }
  44     }
  45
  46     oslFileError error;
  47     rtl_uString *ustrTempPath = NULL;
  48
  49     rtl_string2UString( &ustrTempPath, pValue, strlen( pValue ), osl_getThreadTextEncoding(), OSTRING_TO_OUSTRING_CVTFLAGS );
  50     error = osl_getFileURLFromSystemPath( ustrTempPath, pustrTempDir );
  51     rtl_uString_release( ustrTempPath );
  52
  53     return error;
  54 }
  55 #else
  56
  57 #if defined _MSC_VER
  58 #pragma warning(push, 1)
  59 #endif
  60
  61 #define WIN32_LEAN_AND_MEAN
  62 #include <windows.h>
  63 #include <malloc.h>
  64
  65 #if defined _MSC_VER
  66 #pragma warning(pop)
  67 #endif
  68
  69 oslFileError SAL_CALL my_getTempDirURL( rtl_uString** pustrTempDir )
  70 {
  71     WCHAR   szBuffer[MAX_PATH];
  72     LPWSTR  lpBuffer = szBuffer;
  73     DWORD   nBufferLength = SAL_N_ELEMENTS(szBuffer) - 1;
  74
  75     DWORD           nLength;
  76     oslFileError    error;
  77
  78     do
  79     {
  80         nLength = GetTempPathW( SAL_N_ELEMENTS(szBuffer), lpBuffer );
  81         if ( nLength > nBufferLength )
  82         {
  83             nLength++;
  84             lpBuffer = (LPWSTR)alloca( sizeof(WCHAR) * nLength );
  85             nBufferLength = nLength - 1;
  86         }
  87     } while ( nLength > nBufferLength );
  88
  89     if ( nLength )
  90     {
  91         rtl_uString *ustrTempPath = NULL;
  92
  93         if ( '\\' == lpBuffer[nLength-1] )
  94             lpBuffer[nLength-1] = 0;
  95
  96         rtl_uString_newFromStr( &ustrTempPath, reinterpret_cast<const sal_Unicode*>(lpBuffer) );
  97
  98         error = osl_getFileURLFromSystemPath( ustrTempPath, pustrTempDir );
  99
 100         rtl_uString_release( ustrTempPath );
 101     }
 102     else
 103         error = GetLastError() == ERROR_SUCCESS ? osl_File_E_None : osl_File_E_INVAL;
 104
 105     return error;
 106 }
 107 #endif
 108
 109 #include "tempfile.hxx"
 110
 111 PlaceWareTempFile::PlaceWareTempFile( const OUString& rTempFileURL )
 112 :osl::File( rTempFileURL ), maURL( rTempFileURL )
 113 {
 114 }
 115
 116 PlaceWareTempFile::~PlaceWareTempFile()
 117 {
 118     close();
 119
 120     if( !maURL.isEmpty() )
 121         osl::File::remove( maURL );
 122 }
 123
 124 OUString PlaceWareTempFile::createTempFileURL()
 125 {
 126     OUString aTempFileURL;
 127
 128     const sal_uInt32 nRadix = 26;
 129
 130     OUString aTempDirURL;
 131     /* oslFileError nRC = */ my_getTempDirURL( &aTempDirURL.pData );
 132
 133     static sal_uInt32 u = osl_getGlobalTimer();
 134     for ( sal_uInt32 nOld = u; ++u != nOld; )
 135     {
 136         u %= (nRadix*nRadix*nRadix);
 137         OUString aTmp( aTempDirURL );
 138         if( !aTmp.endsWith("/") )
 139             aTmp += "/";
 140         aTmp += OUString::number(  (unsigned) u, nRadix );
 141         aTmp += ".tmp";
 142
 143         osl::File aFile( aTmp );
 144         osl::FileBase::RC err = aFile.open(osl_File_OpenFlag_Create);
 145         if (  err == FileBase::E_None )
 146         {
 147             aTempFileURL = aTmp;
 148             aFile.close();
 149             break;
 150         }
 151         else if ( err != FileBase::E_EXIST )
 152         {
 153              // if f.e. name contains invalid chars stop trying to create files
 154              break;
 155         }
 156     }
 157
 158     return aTempFileURL;
 159 }
 160
 161
 162 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */