#include <boost/tokenizer.hpp>
#include <boost/lexical_cast.hpp>

#include <Wt/WAbstractItemModel>
#include <Wt/WString>

#include "CsvUtil.h"

void readFromCsv(std::istream& f, Wt::WAbstractItemModel *model,
int numRows, bool firstLineIsHeaders)
{
int csvRow = 0;

while (f) {
std::string line;
getline(f, line);

if (f) {
typedef boost::tokenizer<boost::escaped_list_separator<char> >
CsvTokenizer;
CsvTokenizer tok(line);

int col = 0;
for (CsvTokenizer::iterator i = tok.begin();
i != tok.end(); ++i, ++col) {

if (col >= model->columnCount())
model->insertColumns(model->columnCount(),
col + 1 - model->columnCount());

if (firstLineIsHeaders && csvRow == 0)
model->setHeaderData(col, boost::any(Wt::WString::fromUTF8(*i)));
else {
int dataRow = firstLineIsHeaders ? csvRow - 1 : csvRow;

if (numRows != -1 && dataRow >= numRows)
return;

if (dataRow >= model->rowCount())
model->insertRows(model->rowCount(),
dataRow + 1 - model->rowCount());

std::string s = *i;

boost::any data;

char *end;
int i = std::strtol(s.c_str(), &end, 10);
if (*end == 0)
data = boost::any(i);
else {
double d = std::strtod(s.c_str(), &end);
if (*end == 0)
data = boost::any(d);
else
data = boost::any(Wt::WString::fromUTF8(s));
}

model->setData(dataRow, col, data);
}
}
}

++csvRow;
}
}