#ifndef RC_UTILITY_H_INCLUDED
#define RC_UTILITY_H_INCLUDED
#include <fstream>
#include <sstream>
#include <ctype.h>

using namespace std;

string rc_intToString(int a)
{
    stringstream ss;
    ss << a;
    string str = ss.str();
    ss.clear();
    return str;
}

string rc_uint64ToString(uint64_t a)
{
    stringstream ss;
    ss << a;
    string str = ss.str();
    ss.clear();
    return str;
}

int rc_stringToInt(string a)
{
    stringstream ss;
    ss << a;
    int i = 0;
    ss >> i;
    ss.clear();
    return i;
}

string StringToUpper(string strToConvert)
{//change each element of the string to upper case
   for(unsigned int i=0;i<strToConvert.length();i++)
   {
      strToConvert[i] = toupper(strToConvert[i]);
   }
   return strToConvert;//return the converted string
}

string StringToLower(string strToConvert)
{//change each element of the string to lower case
   for(unsigned int i=0;i<strToConvert.length();i++)
   {
      strToConvert[i] = tolower(strToConvert[i]);
   }
   return strToConvert;//return the converted string
}

string rc_substr(string s, int start_pos=0, int num_char=0)
{
    if(start_pos < 0)
        return "";
    if(start_pos >= s.length())
        return "";
    if( (start_pos+num_char) >= s.length())
        return s.substr(start_pos);
    return s.substr(start_pos, num_char);
}

bool is_file_exist(const char *fileName)
{
    std::ifstream infile(fileName);
    return infile.good();
}

std::string rc_replace(std::string src, std::string tgt, std::string rpc)
{
    if(tgt.length()==0)
        return src;
    size_t found_inc = rpc.length() > 0 ? rpc.length() : 1;
    size_t found = 0;
    found = src.find(tgt);
    while( found != string::npos && found < src.length())
    {
        src = src.substr(0,found) + rpc + src.substr(found + tgt.length());
        found = src.find(tgt,found+found_inc);
    }
    return src;
}

#endif // RC_UTILITY_H_INCLUDED