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/**
* @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.
*/
bool 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
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