Wt examples  3.2.1
Classes | Functions
Charts example

Classes

class  ChartConfig
 A class that allows configuration of a cartesian chart. More...
class  TimeSeriesExample
 A widget that demonstrates a times series chart. More...
class  CategoryExample
 A Widget that demonstrates a category chart. More...
class  ScatterPlotExample
 A Widget that demonstrates a scatter plot. More...
class  PieExample
 A Widget that demonstrates a Pie chart. More...
class  ChartsExample
 A widget that demonstrates various aspects of the charting lib. More...

Functions

void readFromCsv (std::istream &f, Wt::WAbstractItemModel *model, int numRows=-1, bool firstLineIsHeaders=true)
 Utility function that reads a model from a CSV file.

Detailed Description

Function Documentation

void readFromCsv ( std::istream &  f,
Wt::WAbstractItemModel model,
int  numRows = -1,
bool  firstLineIsHeaders = true 
)

Utility function that reads a model from a CSV file.

Definition at line 9 of file CsvUtil.C.

{
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;
}
}

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