#include <string>
#include <algorithm>
#include <functional>
#include <cctype>
#include <locale>

#include "impala_udf.h"

// trim left
static inline std::string &ltrim(std::string &s) {
    s.erase(s.begin(), std::find_if(s.begin(), s.end(),
            std::not1(std::ptr_fun<int, int>(std::isspace))));
    return s;
}

// trim from end
static inline std::string &rtrim(std::string &s) {
    s.erase(std::find_if(s.rbegin(), s.rend(),
            std::not1(std::ptr_fun<int, int>(std::isspace))).base(), s.end());
    return s;
}

// trim from both ends
static inline std::string &trim(std::string &s) {
    return ltrim(rtrim(s));
}

// given
StringVal StandardizeAddress(FunctionContext* context, const StringVal& address, const StringVal& fname)
{
    if (address.is_null) return StringVal::null();
    //std::string original((const char *)address.ptr, address.len);
    std::string original(trim((std::string)address.ptr), address.len);
    std::string standardized("");
    istringstream iss(original);

    string word;
    while(iss >> word) {
        if(map.find(word) != map.end()) {
            standardized.append(map[word]);
        }
        else {
            standardized.append(word);
        }
    }
    return StringVal::CopyFrom(context,
            reinterpret_cast<const uint8_t*>(standardized.c_str()), standardized.size());

}