/**********************************************************************
Copyright ©2012 Advanced Micro Devices, Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

•	Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
•	Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or
 other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
********************************************************************/
#include "SDKCommandArgs.hpp"
#include <stdio.h>

namespace streamsdk
{
SDKCommandArgs::~SDKCommandArgs()
{
    if(_options)
        delete[] _options;
}

int SDKCommandArgs::match(char ** argv, int argc)
{
    int matched  = 0;
    int shortVer = true; // assume short
    char * arg = *argv;

    if ( *arg == '-' && *(arg+1) == '-') 
    { // long
        shortVer = false;
        arg++;
    }
    else if (*arg != '-') 
    {	
        return matched;
    }

    arg++;  

    for (int count = 0; count < _numArgs; count++) 
    {    
        if (shortVer) 
        {
            matched = _options[count]._sVersion.compare(arg) == 0 ? 1 : 0;
        }
        else 
        {
            matched = _options[count]._lVersion.compare(arg) == 0 ? 1 : 0;
        }

        if (matched == 1) 
        {
            if (_options[count]._type == CA_NO_ARGUMENT) 
            {
                *((bool *)_options[count]._value) = true;
            }
            //Handing float argument
            else if (_options[count]._type == CA_ARG_FLOAT) 
            {
                //FIXME: need to add failure code
                if(argc > 1)
                {
                    sscanf(*(argv+1), "%f", (float *)_options[count]._value);
                    matched++; 
                }
                else
                {
                    std::cout<<"Error. Missing argument for \""<<(*argv)<<"\"\n";
                    return SDK_FAILURE;
                }
            }
            else if (_options[count]._type == CA_ARG_DOUBLE) 
            {
                //FIXME: need to add failure code
                if(argc > 1)
                {
                    sscanf(*(argv+1), "%lf", (double *)_options[count]._value);
                    matched++; 
                }
                else
                {
                    std::cout<<"Error. Missing argument for \""<<(*argv)<<"\"\n";
                    return SDK_FAILURE;
                }
            }
            else if (_options[count]._type == CA_ARG_INT) 
            {
                //FIXME: need to add failure code
                if(argc > 1)
                {
                    sscanf(*(argv+1), "%d", (int *)_options[count]._value);
                    matched++; 
                }
                else
                {
                    std::cout<<"Error. Missing argument for \""<<(*argv)<<"\"\n";
                    return SDK_FAILURE;
                }
            }
            else 
            { // CA_STRING
                if(argc > 1)
                {
                    std::string * str = (std::string *)_options[count]._value;
                    str->clear();
                    str->append(*(argv+1));
                    matched++;
                }
                else
                {
                    std::cout<<"Error. Missing argument for \""<<(*argv)<<"\"\n";
                    return SDK_FAILURE;
                }
            }   
            break;
        }
    }
    return matched;
}
          
int  SDKCommandArgs::parse(char ** p_argv, int p_argc)
{
    int matched = 0;
    int argc;
    char **argv;

    // Pass on value to class members
    _argc = p_argc;
    _argv = p_argv;

    // Local copy 
    argc = p_argc;
    argv = p_argv;

    if(argc == 1)
        return SDK_FAILURE;

    while (argc > 0) 
    {
        //matched += match(argv); //Jay modified this to...
        matched = match(argv,argc);
        //argc--; //Jay modified this to...
        argc -= (matched > 0 ? matched : 1);
        argv += (matched > 0 ? matched : 1);
    }

    return matched;
}

bool SDKCommandArgs::isArgSet(std::string str, bool shortVer)
{
    bool enabled = false;

    for (int count = 0; count < _argc; count++) 
    {
        char * arg = _argv[count];

        if (*arg != '-') 
        {
            continue;
        }
        else if (*arg == '-' && *(arg+1) == '-' && !shortVer) 
        { // long
            arg++;
        }

        arg++;  

        if (str.compare(arg) == 0) 
        {
            enabled = true;
            break;
        }
    }

    return enabled;
} 
  
int SDKCommandArgs::AddOption(Option* op)
{
    if(!op)
    {
        std::cout<<"Error. Cannot add option, NULL input";
        return -1;
    }
    else
    {
        Option* save;
        if(_options != NULL)
            save = _options;
        _options = new Option[_numArgs + 1];
        if(!_options)
        {
            std::cout<<"Error. Cannot add option ";
            std::cout<<op->_sVersion<<". Memory allocation error\n";
            return SDK_FAILURE;
        }
        if(_options != NULL)
        {
            for(int i=0; i< _numArgs; ++i)
            {
                _options[i] = save[i];
            }
        }
        _options[_numArgs] = *op;
        _numArgs++;
        delete []save;
    }

    return SDK_SUCCESS;
}

int SDKCommandArgs::DeleteOption(Option* op)
{
    if(!op || _numArgs <= 0)
    {
        std::cout<<"Error. Cannot delete option." 
            <<"Null pointer or empty option list\n";
        return SDK_FAILURE;
    }

    for(int i = 0; i < _numArgs; i++)
    {
        if(op->_sVersion == _options[i]._sVersion || 
            op->_lVersion == _options[i]._lVersion )
        {
            for(int j = i; j < _numArgs-1; j++)
            {
                _options[j] = _options[j+1];
            }
            _numArgs--;
        }
    }

    return SDK_SUCCESS;
}

void SDKCommandArgs::help(void)
{
	std::string result = "-h, --help\tDisplay this information\n";

	for (int count = 0; count < _numArgs; count++) 
	{
		std::string line;

		if (_options[count]._sVersion.length() > 0) 
		{
			line = "-" + _options[count]._sVersion + ", ";
		}

		line += "--" + _options[count]._lVersion
		+ "\t" 
		+ _options[count]._description + "\n";

		result += line;
	}

	std::cout<< result;
}

}