/** * @file llcommandlineparser.h * @brief LLCommandLineParser class declaration * * $LicenseInfo:firstyear=2007&license=viewerlgpl$ * Second Life Viewer Source Code * Copyright (C) 2010, Linden Research, Inc. * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; * version 2.1 of the License only. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA * * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA * $/LicenseInfo$ */ #ifndef LL_LLCOMMANDLINEPARSER_H #define LL_LLCOMMANDLINEPARSER_H #include <boost/function/function1.hpp> // *NOTE:Mani The following is a forward decl of // boost::program_options::command_line_parser // "yay" c++! namespace boost { namespace program_options { template <class charT> class basic_command_line_parser; typedef basic_command_line_parser<char> command_line_parser; } } /** * @class LLCommandLineParser * @brief Handle defining and parsing the command line. */ class LLCommandLineParser { public: typedef std::vector< std::string > token_vector_t; /** * @brief Add a value-less option to the command line description. * @param option_name The long name of the cmd-line option. * @param description The text description of the option usage. */ void addOptionDesc( const std::string& option_name, boost::function1<void, const token_vector_t&> notify_callback = 0, unsigned int num_tokens = 0, const std::string& description = LLStringUtil::null, const std::string& short_name = LLStringUtil::null, bool composing = false, bool positional = false, bool last_option = false); /** * @brief Parse the command line given by argc/argv. */ bool parseCommandLine(int argc, char **argv); /** * @brief Parse the command line contained by the given file. */ bool parseCommandLineString(const std::string& str); /** * @brief Parse the command line contained by the given file. */ bool parseCommandLineFile(const std::basic_istream< char >& file); /** * @brief Call callbacks associated with option descriptions. * * Use this to handle the results of parsing. */ void notify(); /** @brief Print a description of the configured options. * * Use this to print a description of options to the * given ostream. Useful for displaying usage info. */ std::ostream& printOptionsDesc(std::ostream& os) const; /** @brief Manual option setting accessors. * * Use these to retrieve get the values set for an option. * getOption will return an empty value if the option isn't * set. */ bool hasOption(const std::string& name) const; const token_vector_t& getOption(const std::string& name) const; /** @brief Print the list of configured options. */ void printOptions() const; /** @bried Get the error message, if it exists. */ const std::string& getErrorMessage() const { return mErrorMsg; } /** @brief Add a custom parser func to the parser. * * Use this method to add a custom parser for parsing values * the the simple parser may not handle. * it will be applied to each parameter before the * default parser gets a chance. * The parser_func takes an input string, and should return a * name/value pair as the result. */ typedef boost::function1<std::pair<std::string, std::string>, const std::string&> parser_func; void setCustomParser(parser_func f) { mExtraParser = f; } private: bool parseAndStoreResults(boost::program_options::command_line_parser& clp); std::string mErrorMsg; parser_func mExtraParser; }; inline std::ostream& operator<<(std::ostream& out, const LLCommandLineParser& clp) { return clp.printOptionsDesc(out); } class LLControlGroup; /** * @class LLControlGroupCLP * @brief Uses the CLP to configure an LLControlGroup * * */ class LLControlGroupCLP : public LLCommandLineParser { public: /** * @brief Configure the command line parser according the given config file. * * @param config_filename The name of the XML based LLSD config file. * @param clp A reference to the command line parser object to configure. * * *FIX:Mani Specify config file format. */ void configure(const std::string& config_filename, LLControlGroup* controlGroup); }; #endif // LL_LLCOMMANDLINEPARSER_H