shell/source/tools/lngconvex/cmdline.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 #include <stdexcept>
  22 #include <osl/diagnose.h>
  23 #include "cmdline.hxx"
  24
  25
  26 /** Simple command line abstraction
  27 */
  28
  29 // Creation
  30
  31
  32 CommandLine::CommandLine(size_t argc, char* argv[]) :
  33     m_argc(argc),
  34     m_argv(argv)
  35 {
  36 }
  37
  38
  39 // Query
  40
  41
  42 /** Returns an argument by name. If there are
  43     duplicate argument names in the command line,
  44     the first one wins.
  45     Argument name an the argument value must be separated
  46     by spaces. If the argument value starts with an
  47     argument prefix use quotes else the return value is
  48     an empty string because the value will be interpreted
  49     as the next argument name.
  50     If an argument value contains spaces use quotes.
  51
  52     @precond    GetArgumentNames() -> has element ArgumentName
  53
  54     @throws std::invalid_argument exception
  55     if the specified argument could not be
  56     found
  57 */
  58 std::string CommandLine::get_arg(const std::string& ArgumentName) const
  59 {
  60     std::string arg_value;
  61     size_t i;
  62     for ( i = 0; i < m_argc; i++)
  63     {
  64         std::string arg = m_argv[i];
  65
  66         if (ArgumentName == arg && ((i+1) < m_argc) && !is_arg_name(m_argv[i+1]))
  67         {
  68             arg_value = m_argv[i+1];
  69             break;
  70         }
  71     }
  72
  73     if (i == m_argc)
  74         throw std::invalid_argument("Invalid argument name");
  75
  76     return arg_value;
  77 }
  78
  79
  80 // Command
  81
  82
  83 /** Returns whether a given argument is an argument name
  84 */
  85 bool CommandLine::is_arg_name(const std::string& Argument)
  86 {
  87     return (Argument.length() > 0 && Argument[0] == '-');
  88 }
  89
  90 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */