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         return;
  53
  54     sal_Int32 i, n = osl_getCommandArgCount();
  55
  56     g_ppCommandArgs =
  57         static_cast<rtl_uString**>(rtl_allocateZeroMemory (n * sizeof(rtl_uString*)));
  58     for (i = 0; i < n; i++)
  59     {
  60         rtl_uString * pArg = nullptr;
  61         osl_getCommandArg (i, &pArg);
  62         bool env;
  63         {
  64             auto const & arg = OUString::unacquired(&pArg);
  65             env = (arg.startsWith("-") || arg.startsWith("/")) &&
  66                 arg.match("env:", 1) &&
  67                 arg.indexOf ('=') >= 0;
  68         }
  69         if (env )
  70         {
  71             // ignore.
  72             rtl_uString_release (pArg);
  73         }
  74         else
  75         {
  76             // assign.
  77             g_ppCommandArgs[g_nCommandArgCount++] = pArg;
  78         }
  79     }
  80 }
  81
  82 }
  83
  84 oslProcessError SAL_CALL rtl_getAppCommandArg (
  85     sal_uInt32 nArg, rtl_uString **ppCommandArg)
  86 {
  87     init();
  88     oslProcessError result = osl_Process_E_NotFound;
  89     if( nArg < g_nCommandArgCount )
  90     {
  91         rtl_uString_assign( ppCommandArg, g_ppCommandArgs[nArg] );
  92         result = osl_Process_E_None;
  93     }
  94     return result;
  95 }
  96
  97 sal_uInt32 SAL_CALL rtl_getAppCommandArgCount()
  98 {
  99     init();
 100     return g_nCommandArgCount;
 101 }
 102
 103 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */