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/* gtkmm example Copyright (C) 2002 gtkmm development team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <giomm.h>
#include <iostream>
#include <cstring>
Glib::RefPtr<Glib::MainLoop> mainloop;
Glib::RefPtr<Gio::File> file;
Glib::RefPtr<Gio::FileInputStream> stream;
gchar buffer[1000]; //TODO: This is unpleasant.
void on_stream_read_async_ready(Glib::RefPtr<Gio::AsyncResult>& result)
{
std::cout << "Stream Async handler called." << std::endl;
try
{
const gsize bytes_read = stream->read_finish(result);
if(bytes_read)
std::cout << "File contents read: " << buffer << std::endl;
else
std::cerr << "Gio::InputStream::read() read 0 bytes." << std::endl;
}
catch(const Glib::Error& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
}
mainloop->quit();
}
void on_file_read_async_ready(Glib::RefPtr<Gio::AsyncResult>& result)
{
std::cout << "File Async handler called." << std::endl;
try
{
stream = file->read_finish(result);
if(!stream)
std::cerr << "Gio::File::read() returned an empty RefPtr." << std::endl;
}
catch(const Glib::Error& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
mainloop->quit();
}
if(stream)
{
memset(buffer, 0, 1000);
stream->read_async(buffer, 1000,
[](auto& stream_result)
{ on_stream_read_async_ready(stream_result); }
);
}
}
int main(int /* argc */, char** /* argv */)
{
Gio::init();
try
{
file = Gio::File::create_for_path("/etc/fstab");
if(!file)
std::cerr << "Gio::File::create_for_path() returned an empty RefPtr." << std::endl;
}
catch(const Glib::Error& ex)
{
std::cerr << "Exception caught: " << ex.what() << std::endl;
}
mainloop = Glib::MainLoop::create();
file->read_async(
[](auto& result)
{ on_file_read_async_ready(result); }
);
mainloop->run();
return 0;
}
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