#include "aux_textfile.h"

#include "jgame.h"
#include <stdlib.h>

namespace textfile
{
    char *buffer = nullptr;
    int fsize = 0;
    int p = 0;

    const int toInt(std::string token)
    {
        int value = 0;
        for (std::size_t i=0; i<token.length(); ++i)
        {
            if (token[i]<48 || token[i]>57) return 0;
            value = (value*10) + (token[i]-48);
        }
        return value;
    }

    const bool open(std::string filename)
    {
        buffer = file_getfilebuffer(filename.c_str(), fsize);
        p = 0;

        return true;
    }

    void close()
    {
        free(buffer);
    }

    std::string getNextToken()
    {
        char token[255];
        int tpos = 0;

        // Ignore whitespace
        while (p<fsize && buffer[p]<=32 ) p++;

        // Grab token
        while (p<fsize && buffer[p]>32 ) token[tpos++]=buffer[p++];
        token[tpos]=0;

        return std::string(token);
    }

    const bool searchToken(std::string token)
    {
        while (p<fsize && getNextToken() != token) p++;
        return p<fsize;
    }

    std::string getStringValue(std::string token)
    {
        textfile::searchToken(token);
        textfile::searchToken("=");
        return textfile::getNextToken();
    }

    const int getIntValue(std::string token)
    {
        return toInt(getStringValue(token));
    }
}