sal/rtl/cmdargs.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/mutex.hxx>
  21 #include <rtl/alloc.h>
  22 #include <rtl/process.h>
  23 #include <rtl/ustring.hxx>
  24
  25 namespace {
  26
  27 rtl_uString ** g_ppCommandArgs = nullptr;
  28 sal_uInt32     g_nCommandArgCount = 0;
  29
  30 struct ArgHolder
  31 {
  32     ~ArgHolder();
  33 };
  34
  35 ArgHolder::~ArgHolder()
  36 {
  37     while (g_nCommandArgCount > 0)
  38         rtl_uString_release (g_ppCommandArgs[--g_nCommandArgCount]);
  39
  40     free (g_ppCommandArgs);
  41     g_ppCommandArgs = nullptr;
  42 }
  43
  44 // The destructor of this static ArgHolder is "activated" by the assignments to
  45 // g_ppCommandArgs and g_nCommandArgCount in init():
  46 ArgHolder argHolder;
  47
  48 void init()
  49 {
  50     osl::MutexGuard guard( osl::Mutex::getGlobalMutex() );
  51     if (!g_ppCommandArgs)
  52     {
  53         sal_Int32 i, n = osl_getCommandArgCount();
  54
  55         g_ppCommandArgs =
  56             static_cast<rtl_uString**>(rtl_allocateZeroMemory (n * sizeof(rtl_uString*)));
  57         for (i = 0; i < n; i++)
  58         {
  59             rtl_uString * pArg = nullptr;
  60             osl_getCommandArg (i, &pArg);
  61             if ((pArg->buffer[0] == '-' || pArg->buffer[0] == '/') &&
  62                  pArg->buffer[1] == 'e' &&
  63                  pArg->buffer[2] == 'n' &&
  64                  pArg->buffer[3] == 'v' &&
  65                  pArg->buffer[4] == ':' &&
  66                 rtl_ustr_indexOfChar (&(pArg->buffer[5]), '=') >= 0 )
  67             {
  68                 // ignore.
  69                 rtl_uString_release (pArg);
  70             }
  71             else
  72             {
  73                 // assign.
  74                 g_ppCommandArgs[g_nCommandArgCount++] = pArg;
  75             }
  76         }
  77     }
  78 }
  79
  80 }
  81
  82 oslProcessError SAL_CALL rtl_getAppCommandArg (
  83     sal_uInt32 nArg, rtl_uString **ppCommandArg)
  84 {
  85     init();
  86     oslProcessError result = osl_Process_E_NotFound;
  87     if( nArg < g_nCommandArgCount )
  88     {
  89         rtl_uString_assign( ppCommandArg, g_ppCommandArgs[nArg] );
  90         result = osl_Process_E_None;
  91     }
  92     return result;
  93 }
  94
  95 sal_uInt32 SAL_CALL rtl_getAppCommandArgCount()
  96 {
  97     init();
  98     return g_nCommandArgCount;
  99 }
 100
 101 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */