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#include "GraphWidget.hxx"
#include <cmath>
#include <sstream>
#include <string>
#include <map>
#include <gtkmm/main.h>
#include <gtkmm/window.h>
#include <unistd.h>
#include <poll.h>
using namespace systemtap;
class StapParser
{
Glib::ustring _buffer;
typedef std::map<std::string, std::tr1::shared_ptr<GraphData> > DataMap;
DataMap _dataSets;
Gtk::Window& _win;
GraphWidget& _widget;
public:
StapParser(Gtk::Window& win,
GraphWidget& widget) : _win(win), _widget(widget) {}
bool ioCallback(Glib::IOCondition ioCondition)
{
if ((ioCondition & Glib::IO_IN) == 0)
return true;
char buf[256];
ssize_t bytes_read = 0;
bytes_read = read(0, buf, sizeof(buf) - 1);
if (bytes_read <= 0)
{
_win.hide();
return true;
}
buf[bytes_read] = '\0';
_buffer += buf;
Glib::ustring::size_type ret = Glib::ustring::npos;
while ((ret = _buffer.find('\n')) != Glib::ustring::npos)
{
Glib::ustring dataString(_buffer, 0, ret);
if (dataString[0] == '%')
{
size_t found;
if ((found = dataString.find("%Title:") == 0))
{
std::string title = dataString.substr(7);
_widget.setTitle(title);
}
else if ((found = dataString.find("%XAxisTitle:") == 0))
{
_widget.setXAxisText(dataString.substr(12));
}
else if ((found = dataString.find("%YAxisTitle:") == 0))
{
_widget.setYAxisText(dataString.substr(12));
}
else if ((found = dataString.find("%YMax:") == 0))
{
double ymax;
std::istringstream stream(dataString.substr(6));
stream >> ymax;
// _gdata->scale = ymax;
}
else if ((found = dataString.find("%DataSet:") == 0))
{
std::tr1::shared_ptr<GraphData> dataSet(new GraphData);
std::string setName;
int hexColor;
std::string style;
std::istringstream stream(dataString.substr(9));
stream >> setName >> dataSet->scale >> std::hex >> hexColor
>> style;
dataSet->color[0] = (hexColor >> 16) / 255.0;
dataSet->color[1] = ((hexColor >> 8) & 0xff) / 255.0;
dataSet->color[2] = (hexColor & 0xff) / 255.0;
if (style == "dot")
dataSet->style = GraphData::DOT;
_dataSets.insert(std::make_pair(setName, dataSet));
_widget.addGraphData(dataSet);
}
}
else
{
std::string dataSet;
double time;
double data;
std::istringstream stream(dataString);
stream >> dataSet >> time >> data;
DataMap::iterator itr = _dataSets.find(dataSet);
if (itr != _dataSets.end())
itr->second->data.push_back(std::make_pair(time, data));
}
_buffer.erase(0, ret + 1);
}
return true;
}
};
int main(int argc, char** argv)
{
Gtk::Main app(argc, argv);
Gtk::Window win;
win.set_title("Grapher");
win.set_default_size(600, 200);
GraphWidget w;
w.setExtents(0.0, 1.0, 5.0, 0.0);
w.setLineWidth(2);
StapParser stapParser(win, w);
Glib::signal_io().connect(sigc::mem_fun(stapParser,
&StapParser::ioCallback),
0,
Glib::IO_IN);
win.add(w);
w.show();
Gtk::Main::run(win);
return 0;
}
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