author | Gustavo J. A. M. Carneiro <gjc@inescporto.pt> |
Wed, 26 Nov 2008 12:11:11 +0000 | |
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parent 3190 | 51fe9001a679 |
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/* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */ |
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/* |
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* Copyright (c) 2008 INRIA |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License version 2 as |
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* published by the Free Software Foundation; |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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* |
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* Authors: Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
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*/ |
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#ifndef COMMAND_LINE_H |
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#define COMMAND_LINE_H |
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#include <string> |
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#include <sstream> |
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#include <list> |
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#include "ns3/callback.h" |
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namespace ns3 { |
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/** |
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* \brief parse command-line arguments |
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* \ingroup core |
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* |
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* Instances of this class can be used to parse command-line |
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* arguments: users can register new arguments with |
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* CommandLine::AddValue but the most important functionality |
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* provided by this class is that it can be used to set the |
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* 'initial value' of every attribute in the system with the |
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* --TypeIdName::AttributeName=value syntax and it can be used |
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* to set the value of every GlobalValue in the system with |
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* the --GlobalValueName=value syntax. |
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*/ |
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class CommandLine |
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{ |
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public: |
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~CommandLine (); |
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/** |
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* \param name the name of the user-supplied argument |
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* \param help some help text used by --PrintHelp |
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* \param value a reference to the variable where the |
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* value parsed will be stored (if no value |
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* is parsed, this variable is not modified). |
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*/ |
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template <typename T> |
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void AddValue (const std::string &name, |
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const std::string &help, |
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T &value); |
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/** |
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* \param name the name of the user-supplied argument |
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* \param help some help text used by --PrintHelp |
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* \param callback a callback function that will be invoked to parse |
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* and collect the value. This normally used by language bindings. |
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*/ |
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void AddValue (const std::string &name, |
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const std::string &help, |
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Callback<bool, std::string> callback); |
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/** |
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* \param argc the 'argc' variable: number of arguments (including the |
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* main program name as first element). |
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* \param argv the 'argv' variable: a null-terminated array of strings, |
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* each of which identifies a command-line argument. |
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* |
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* Obviously, this method will parse the input command-line arguments and |
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* will attempt to handle them all. |
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*/ |
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void Parse (int argc, char *argv[]) const; |
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private: |
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class Item |
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{ |
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public: |
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std::string m_name; |
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std::string m_help; |
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virtual ~Item (); |
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virtual bool Parse (std::string value) = 0; |
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}; |
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template <typename T> |
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class UserItem : public Item |
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{ |
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public: |
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virtual bool Parse (std::string value); |
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T *m_valuePtr; |
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}; |
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class CallbackItem : public Item |
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{ |
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public: |
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virtual bool Parse (std::string value); |
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Callback<bool, std::string> m_callback; |
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}; |
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void HandleArgument (std::string name, std::string value) const; |
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void PrintHelp (void) const; |
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void PrintGlobals (void) const; |
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void PrintAttributes (std::string type) const; |
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void PrintGroup (std::string group) const; |
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void PrintTypeIds (void) const; |
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111 |
void PrintGroups (void) const; |
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112 |
|
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113 |
typedef std::list<Item *> Items; |
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114 |
Items m_items; |
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115 |
}; |
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116 |
|
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117 |
} // namespace ns3 |
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118 |
|
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119 |
namespace ns3 { |
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120 |
|
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121 |
template <typename T> |
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122 |
void |
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123 |
CommandLine::AddValue (const std::string &name, |
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124 |
const std::string &help, |
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125 |
T &value) |
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126 |
{ |
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127 |
UserItem<T> *item = new UserItem<T> (); |
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128 |
item->m_name = name; |
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129 |
item->m_help = help; |
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130 |
item->m_valuePtr = &value; |
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131 |
m_items.push_back (item); |
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132 |
} |
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133 |
|
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134 |
template <typename T> |
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135 |
bool |
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136 |
CommandLine::UserItem<T>::Parse (std::string value) |
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137 |
{ |
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138 |
std::istringstream iss; |
439
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139 |
iss.str (value); |
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140 |
iss >> (*m_valuePtr); |
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141 |
return !iss.bad () && !iss.fail (); |
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|
142 |
} |
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143 |
|
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144 |
} // namespace ns3 |
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145 |
|
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add missing copyright statements.
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146 |
#endif /* COMMAND_LINE_H */ |