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/*
* RTFL
*
* Copyright 2013-2015 Sebastian Geerken <sgeerken@dillo.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version; with the following exception:
*
* The copyright holders of RTFL give you permission to link this file
* statically or dynamically against all versions of the graphviz
* library, which are published by AT&T Corp. under one of the following
* licenses:
*
* - Common Public License version 1.0 as published by International
* Business Machines Corporation (IBM), or
* - Eclipse Public License version 1.0 as published by the Eclipse
* 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, see <http://www.gnu.org/licenses/>.
*/
#include "fltk_lines.hh"
#include <stdio.h>
#include <fcntl.h>
#include <Fl/Fl.H>
using namespace lout::container::typed;
namespace rtfl {
namespace common {
// -------------------------
// FltkLinesSource
// -------------------------
FltkLinesSource::TimeoutInfo::TimeoutInfo (FltkLinesSource *source, int type)
{
this->source = source;
this->type = type;
}
FltkLinesSource::FltkLinesSource ()
{
timeoutInfos = new List<TimeoutInfo> (true);
}
FltkLinesSource::~FltkLinesSource ()
{
delete timeoutInfos;
}
void FltkLinesSource::staticProcessInputCallback (int fd, void *data)
{
((FltkLinesSource*)data)->processInputCallback (fd);
}
void FltkLinesSource::processInputCallback (int fd)
{
int n = processInput (fd);
if (n == 0) {
// We read non-blocking, so -1 is returned and (errno set to
// EAGAIN) when no data is currently available. When 0 is
// returned, this means that there is permanently no data
// (typically that the tested program has terminated). For some
// reasons, the cpu is hogged then; this is avoided by removing
// the read function again.
Fl::remove_fd(0, FL_READ);
getSink()->finish ();
}
}
void FltkLinesSource::setup (tools::LinesSink *sink)
{
setSink (sink);
int flags = fcntl(0, F_GETFL, 0);
fcntl(0, F_SETFL, flags | O_NONBLOCK);
Fl::add_fd(0, FL_READ, staticProcessInputCallback, (void*)this);
}
void FltkLinesSource::addTimeout (double secs, int type)
{
TimeoutInfo *timeoutInfo = new TimeoutInfo (this, type);
timeoutInfos->append (timeoutInfo);
Fl::add_timeout(secs, timeoutCallback, timeoutInfo);
}
void FltkLinesSource::timeoutCallback (void *data)
{
TimeoutInfo *timeoutInfo = (TimeoutInfo*) data;
timeoutInfo->getSource()->getSink()->timeout (timeoutInfo->getType ());
timeoutInfo->getSource()->timeoutInfos->removeRef (timeoutInfo);
}
void FltkLinesSource::removeTimeout (int type)
{
// Iterators will not work when the set is modified; hence this nested loop.
bool found;
do {
found = false;
for (Iterator<TimeoutInfo> it = timeoutInfos->iterator ();
!found && it.hasNext (); ) {
TimeoutInfo *timeout = it.getNext();
if (timeout->getType () == type) {
found = true;
Fl::remove_timeout(timeoutCallback, timeout);
timeoutInfos->removeRef (timeout);
}
}
} while (found);
}
// ---------------------------
// FltkDefaultSource
// ---------------------------
FltkDefaultSource::FltkDefaultSource (): LinesSourceSequence (true)
{
int fd = open (".rtfl", O_RDONLY);
if (fd != -1)
add (new tools::BlockingLinesSource (fd));
add (new FltkLinesSource ());
}
} // namespace objects
} // namespace rtfl
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