[1663] | 1 | /* |
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| 2 | * ORXONOX - the hottest 3D action shooter ever to exist |
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| 3 | * > www.orxonox.net < |
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| 4 | * |
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| 5 | * |
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| 6 | * License notice: |
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| 7 | * |
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| 8 | * This program is free software; you can redistribute it and/or |
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| 9 | * modify it under the terms of the GNU General Public License |
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| 10 | * as published by the Free Software Foundation; either version 2 |
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| 11 | * of the License, or (at your option) any later version. |
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| 12 | * |
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| 13 | * This program is distributed in the hope that it will be useful, |
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| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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| 16 | * GNU General Public License for more details. |
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| 17 | * |
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| 18 | * You should have received a copy of the GNU General Public License |
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| 19 | * along with this program; if not, write to the Free Software |
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| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
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| 21 | * |
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| 22 | * Author: |
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| 23 | * Reto Grieder |
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| 24 | * Co-authors: |
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| 25 | * ... |
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| 26 | * |
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| 27 | */ |
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| 28 | |
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| 29 | #ifndef _CommandLine_H__ |
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| 30 | #define _CommandLine_H__ |
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| 31 | |
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| 32 | #include "CorePrereqs.h" |
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| 33 | #include <map> |
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| 34 | #include "util/Convert.h" |
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| 35 | #include "Debug.h" |
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| 36 | #include "Exception.h" |
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| 37 | |
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| 38 | |
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| 39 | #define SetCommandLineArgument(name, defaultValue) \ |
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| 40 | BaseCommandLineArgument& CmdArgumentDummyBoolVar##name \ |
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| 41 | = orxonox::CommandLine::addCommandLineArgument(#name, defaultValue) |
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| 42 | |
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| 43 | namespace orxonox |
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| 44 | { |
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| 45 | class _CoreExport BaseCommandLineArgument |
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| 46 | { |
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| 47 | friend class CommandLine; |
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| 48 | |
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| 49 | public: |
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| 50 | bool hasDefaultValue() const { return bHasDefaultValue_; } |
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| 51 | const std::string& getName() const { return name_; } |
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| 52 | const std::string& getShortcut() const { return shortcut_; } |
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| 53 | BaseCommandLineArgument& setShortcut(const std::string& shortcut) |
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| 54 | { this->shortcut_ = shortcut; return *this; } |
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| 55 | |
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| 56 | protected: |
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| 57 | BaseCommandLineArgument(const std::string& name) |
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| 58 | : name_(name) |
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| 59 | , bHasDefaultValue_(true) |
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| 60 | { } |
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| 61 | |
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| 62 | BaseCommandLineArgument(const BaseCommandLineArgument& instance); |
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| 63 | virtual ~BaseCommandLineArgument() { } |
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| 64 | |
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| 65 | virtual void parse(const std::string& value) = 0; |
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| 66 | |
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| 67 | bool bHasDefaultValue_; |
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| 68 | |
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| 69 | private: |
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| 70 | std::string name_; |
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| 71 | std::string shortcut_; |
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| 72 | }; |
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| 73 | |
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| 74 | |
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| 75 | template <class T> |
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| 76 | class CommandLineArgument : public BaseCommandLineArgument |
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| 77 | { |
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| 78 | friend class CommandLine; |
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| 79 | |
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| 80 | public: |
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| 81 | T getValue() const { return value_; } |
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| 82 | T getDefaultValue() const { return defaultValue_; } |
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| 83 | |
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| 84 | private: |
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| 85 | CommandLineArgument(const std::string& name, const T& defaultValue) |
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| 86 | : BaseCommandLineArgument(name) |
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| 87 | , value_(defaultValue) |
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| 88 | , defaultValue_(defaultValue) |
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| 89 | { } |
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| 90 | |
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| 91 | virtual void parse(const std::string& value); |
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| 92 | |
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| 93 | T value_; |
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| 94 | T defaultValue_; |
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| 95 | }; |
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| 96 | |
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| 97 | template <class T> |
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| 98 | void CommandLineArgument<T>::parse(const std::string& value) |
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| 99 | { |
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| 100 | if (convertValue(&this->value_, value)) |
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| 101 | { |
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| 102 | this->bHasDefaultValue_ = false; |
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| 103 | } |
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| 104 | else |
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| 105 | { |
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| 106 | ThrowException(Argument, "Could not read command line argument '" + getName() + "'."); |
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| 107 | } |
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| 108 | } |
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| 109 | |
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| 110 | |
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| 111 | class _CoreExport CommandLine |
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| 112 | { |
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| 113 | public: |
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| 114 | |
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| 115 | static void parse(int argc, char** argv) { _getInstance()._parse(argc, argv); } |
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| 116 | |
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| 117 | template <class T> |
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| 118 | static const CommandLineArgument<T>* getCommandLineArgument(const std::string& name); |
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| 119 | template <class T> |
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| 120 | static BaseCommandLineArgument& addCommandLineArgument(const std::string& name, |
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| 121 | const T& defaultValue); |
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| 122 | |
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| 123 | private: |
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| 124 | CommandLine() : bFirstTimeParse_(true) { } |
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| 125 | CommandLine(const CommandLine& instance); |
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| 126 | ~CommandLine(); |
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| 127 | |
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| 128 | static CommandLine& _getInstance(); |
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| 129 | |
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| 130 | void _parse(int argc, char** argv); |
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| 131 | void checkFullArgument(const std::string& name, const std::string& value); |
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| 132 | void checkShortcut(const std::string& shortcut, const std::string& value); |
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| 133 | |
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| 134 | bool bFirstTimeParse_; |
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| 135 | |
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| 136 | std::map<std::string, BaseCommandLineArgument*> cmdLineArgs_; |
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| 137 | std::map<std::string, BaseCommandLineArgument*> cmdLineArgsShortcut_; |
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| 138 | }; |
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| 139 | |
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| 140 | |
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| 141 | template <class T> |
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| 142 | const CommandLineArgument<T>* CommandLine::getCommandLineArgument(const std::string& name) |
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| 143 | { |
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| 144 | std::map<std::string, BaseCommandLineArgument*>::const_iterator it = _getInstance().cmdLineArgs_.find(name); |
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| 145 | if (it == _getInstance().cmdLineArgs_.end()) |
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| 146 | { |
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| 147 | ThrowException(Argument, "Could find command line argument '" + name + "'."); |
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| 148 | } |
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| 149 | else |
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| 150 | { |
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| 151 | CommandLineArgument<T>* arg = dynamic_cast<CommandLineArgument<T>* >(it->second); |
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| 152 | if (arg == 0) |
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| 153 | { |
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| 154 | ThrowException(Argument, "Could not convert command line argument value to requested type. " \ |
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| 155 | "You should use exactly the same type as predefined."); |
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| 156 | } |
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| 157 | else |
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| 158 | { |
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| 159 | return arg; |
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| 160 | } |
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| 161 | } |
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| 162 | } |
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| 163 | |
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| 164 | template <class T> |
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| 165 | BaseCommandLineArgument& CommandLine::addCommandLineArgument(const std::string& name, |
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| 166 | const T& defaultValue) |
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| 167 | { |
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| 168 | std::map<std::string, BaseCommandLineArgument*>::const_iterator it = _getInstance().cmdLineArgs_.find(name); |
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| 169 | OrxAssert(it == _getInstance().cmdLineArgs_.end(), |
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| 170 | "Cannot add a command line argument with name '" + name + "' twice."); |
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| 171 | |
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| 172 | return *(_getInstance().cmdLineArgs_[name] = new CommandLineArgument<T>(name, defaultValue)); |
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| 173 | } |
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| 174 | } |
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| 175 | |
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| 176 | #endif /* _CommandLine_H__ */ |
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