[12175] | 1 | /* |
---|
| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
---|
| 3 | * > www.orxonox.net < |
---|
| 4 | * |
---|
| 5 | * |
---|
| 6 | * License notice: |
---|
| 7 | * |
---|
| 8 | * This program is free software; you can redistribute it and/or |
---|
| 9 | * modify it under the terms of the GNU General Public License |
---|
| 10 | * as published by the Free Software Foundation; either version 2 |
---|
| 11 | * of the License, or (at your option) any later version. |
---|
| 12 | * |
---|
| 13 | * This program is distributed in the hope that it will be useful, |
---|
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
---|
| 16 | * GNU General Public License for more details. |
---|
| 17 | * |
---|
| 18 | * You should have received a copy of the GNU General Public License |
---|
| 19 | * along with this program; if not, write to the Free Software |
---|
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
---|
| 21 | * |
---|
| 22 | * Author: |
---|
| 23 | * Reto Grieder |
---|
| 24 | * Co-authors: |
---|
| 25 | * ... |
---|
| 26 | * |
---|
| 27 | */ |
---|
| 28 | |
---|
| 29 | /** |
---|
| 30 | @file |
---|
| 31 | @ingroup Config CmdArgs |
---|
| 32 | @brief Declaration of CommandLineParser and CommandLineArgument, definition of the SetCommandLineArgument() macros. |
---|
| 33 | */ |
---|
| 34 | |
---|
| 35 | #ifndef _CommandLine_H__ |
---|
| 36 | #define _CommandLine_H__ |
---|
| 37 | |
---|
| 38 | #include "core/CorePrereqs.h" |
---|
| 39 | |
---|
| 40 | #include <fstream> |
---|
| 41 | #include <map> |
---|
| 42 | #include "util/OrxAssert.h" |
---|
| 43 | #include "util/MultiType.h" |
---|
| 44 | #include "util/Singleton.h" |
---|
| 45 | |
---|
| 46 | namespace orxonox |
---|
| 47 | { |
---|
| 48 | /** |
---|
| 49 | @brief |
---|
| 50 | Container class for a command line argument of any type supported by MultiType. |
---|
| 51 | |
---|
| 52 | Whenever you want to have an option specified by a command line switch, |
---|
| 53 | you need to first define it with SetCommandLineArgument(name, defaultValue). |
---|
| 54 | It is then added to a map and possibly changed when the command line is being parsed. |
---|
| 55 | If the option was not given, you can detect this by asking hasDefaultValue(). |
---|
| 56 | |
---|
| 57 | There is a possibility to define a short cut so you can write "-p 20" instead of "--port 20". |
---|
| 58 | Note the difference between "-" and "--"! |
---|
| 59 | Also, there is no restriction to the number of strings you add after --name. |
---|
| 60 | So "--startVector {2, 4, 5}" is perfectly legal. |
---|
| 61 | |
---|
| 62 | Retrieving an argument is possible with the getCommandLineArgument function of the |
---|
| 63 | CommandLineParser class. It is a Singleton, but the public interface is static. |
---|
| 64 | */ |
---|
| 65 | class _CoreExport CommandLineArgument |
---|
| 66 | { |
---|
| 67 | friend class CommandLineParser; |
---|
| 68 | |
---|
| 69 | public: |
---|
| 70 | //! Constructor initialises both value_ and defaultValue_ with defaultValue. |
---|
| 71 | CommandLineArgument(const std::string& name, const MultiType& defaultValue) |
---|
| 72 | : bHasDefaultValue_(true) |
---|
| 73 | , name_(name) |
---|
| 74 | , value_(defaultValue) |
---|
| 75 | , defaultValue_(defaultValue) |
---|
| 76 | { } |
---|
| 77 | ~CommandLineArgument() { } |
---|
| 78 | |
---|
| 79 | //! Tells whether the value has been changed by the command line. |
---|
| 80 | bool hasDefaultValue() const { return bHasDefaultValue_; } |
---|
| 81 | //! Returns the name of the argument. |
---|
| 82 | const std::string& getName() const { return name_; } |
---|
| 83 | |
---|
| 84 | //! Returns the shortcut (example: "-p 22" for "--port 22") of the argument. |
---|
| 85 | //! Evaluates to "" if there is none. |
---|
| 86 | const std::string& getShortcut() const { return shortcut_; } |
---|
| 87 | //! Sets the shortcut for the argument |
---|
| 88 | CommandLineArgument& shortcut(const std::string& shortcut) |
---|
| 89 | { this->shortcut_ = shortcut; return *this; } |
---|
| 90 | |
---|
| 91 | //! Returns the usage information |
---|
| 92 | const std::string& getInformation() const { return this->usageInformation_; } |
---|
| 93 | //! Sets the option information when displaying orxonox usage. |
---|
| 94 | CommandLineArgument& information(const std::string& usage) |
---|
| 95 | { this->usageInformation_ = usage; return *this; } |
---|
| 96 | |
---|
| 97 | //! Returns the actual value of the argument. Can be equal to default value. |
---|
| 98 | const MultiType& getValue() const { return value_; } |
---|
| 99 | //! Returns the given default value as type T. |
---|
| 100 | const MultiType& getDefaultValue() const { return defaultValue_; } |
---|
| 101 | |
---|
| 102 | private: |
---|
| 103 | // non-copyable: |
---|
| 104 | CommandLineArgument(const CommandLineArgument&) = delete; |
---|
| 105 | CommandLineArgument& operator=(const CommandLineArgument&) = delete; |
---|
| 106 | |
---|
| 107 | //! Parses the value string of a command line argument. |
---|
| 108 | void parse(const std::string& value); |
---|
| 109 | |
---|
| 110 | //! Tells whether the value has been changed by the command line. |
---|
| 111 | bool bHasDefaultValue_; |
---|
| 112 | |
---|
| 113 | private: |
---|
| 114 | std::string name_; //!< Name of the argument |
---|
| 115 | std::string shortcut_; //!< Shortcut of the argument. @see getShortcut(). |
---|
| 116 | std::string usageInformation_; //!< Tells about the usage of this parameter |
---|
| 117 | |
---|
| 118 | MultiType value_; //!< The actual value |
---|
| 119 | MultiType defaultValue_; //!< Default value. Should not be changed. |
---|
| 120 | }; |
---|
| 121 | |
---|
| 122 | |
---|
| 123 | /** |
---|
| 124 | @brief |
---|
| 125 | Global interface to command line options. |
---|
| 126 | Allows to add and retrieve command line arguments. Also does the parsing. |
---|
| 127 | @note |
---|
| 128 | Internally it is a Singleton, but the public interface is static. |
---|
| 129 | @see |
---|
| 130 | CommandLineArgument |
---|
| 131 | */ |
---|
| 132 | class _CoreExport CommandLineParser : public Singleton<CommandLineParser> |
---|
| 133 | { |
---|
| 134 | friend class Singleton<CommandLineParser>; |
---|
| 135 | |
---|
| 136 | public: |
---|
| 137 | //! Constructor initialises bFirstTimeParse_ with true. |
---|
| 138 | CommandLineParser() : bFirstTimeParse_(true) { } |
---|
| 139 | ~CommandLineParser(); |
---|
| 140 | |
---|
| 141 | //! Parse redirection to internal member method. |
---|
| 142 | static void parse(const std::string& cmdLine) |
---|
| 143 | { getInstance()._parse(cmdLine); } |
---|
| 144 | |
---|
| 145 | static std::string getUsageInformation(); |
---|
| 146 | |
---|
| 147 | static const CommandLineArgument* getArgument(const std::string& name); |
---|
| 148 | //! Writes the argument value in the given parameter. |
---|
| 149 | template <class T> |
---|
| 150 | static void getValue(const std::string& name, T* value) |
---|
| 151 | { *value = (T)(getArgument(name)->getValue()); } |
---|
| 152 | static const MultiType& getValue(const std::string& name) |
---|
| 153 | { return getArgument(name)->getValue(); } |
---|
| 154 | |
---|
| 155 | static void addArgument(CommandLineArgument* argument); |
---|
| 156 | static void removeArgument(CommandLineArgument* argument); |
---|
| 157 | |
---|
| 158 | static bool existsArgument(const std::string& name) |
---|
| 159 | { |
---|
| 160 | std::map<std::string, CommandLineArgument*>::const_iterator it = getInstance().cmdLineArgs_.find(name); |
---|
| 161 | return !(it == getInstance().cmdLineArgs_.end()); |
---|
| 162 | } |
---|
| 163 | |
---|
| 164 | static void generateDoc(std::ofstream& file); |
---|
| 165 | |
---|
| 166 | private: |
---|
| 167 | //! Undefined copy constructor |
---|
| 168 | CommandLineParser(const CommandLineParser& instance); |
---|
| 169 | |
---|
| 170 | void _parse(const std::string& cmdLine); |
---|
| 171 | void checkFullArgument(const std::string& name, const std::string& value); |
---|
| 172 | void checkShortcut(const std::string& shortcut, const std::string& value); |
---|
| 173 | |
---|
| 174 | /** |
---|
| 175 | Tells whether we parsed for the first time. The CommmandLineArguments are added before main(). |
---|
| 176 | So when we call parse() the first time, we need to create a map with all shortcuts since these |
---|
| 177 | get added after addCommandLineArgument(). |
---|
| 178 | */ |
---|
| 179 | bool bFirstTimeParse_; |
---|
| 180 | |
---|
| 181 | //! Holds all pointers to the arguments and serves as a search map by name. |
---|
| 182 | std::map<std::string, CommandLineArgument*> cmdLineArgs_; |
---|
| 183 | //! Search map by shortcut for the arguments. |
---|
| 184 | std::map<std::string, CommandLineArgument*> cmdLineArgsShortcut_; |
---|
| 185 | |
---|
| 186 | static CommandLineParser* singletonPtr_s; |
---|
| 187 | }; |
---|
| 188 | |
---|
| 189 | template <> |
---|
| 190 | inline void CommandLineParser::getValue<std::string>(const std::string& name, std::string* value) |
---|
| 191 | { |
---|
| 192 | *value = getArgument(name)->getValue().get<std::string>(); |
---|
| 193 | } |
---|
| 194 | } |
---|
| 195 | |
---|
| 196 | #endif /* _CommandLine_H__ */ |
---|