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/* smplayer, GUI front-end for mplayer.
Copyright (C) 2006-2010 Ricardo Villalba <rvm@escomposlinux.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 2 of the License, or
(at your option) any later version.
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 "myprocess.h"
#ifdef Q_OS_WIN
#if QT_VERSION < 0x040300
#define USE_TEMP_FILE 1
#else
#define USE_TEMP_FILE 0
#endif
#else
#define USE_TEMP_FILE 0
#endif
MyProcess::MyProcess(QObject * parent) : QProcess(parent)
{
clearArguments();
setProcessChannelMode( QProcess::MergedChannels );
#if USE_TEMP_FILE
temp_file.open(); // Create temporary file
QString filename = temp_file.fileName();
setStandardOutputFile( filename );
qDebug("MyProcess::MyProcess: temporary file: %s", filename.toUtf8().data());
temp_file.close();
//connect(&temp_file, SIGNAL(readyRead()), this, SLOT(readTmpFile()) );
connect(&timer, SIGNAL(timeout()), this, SLOT(readTmpFile()) );
#else
connect(this, SIGNAL(readyReadStandardOutput()), this, SLOT(readStdOut()) );
#endif
connect(this, SIGNAL(finished(int, QProcess::ExitStatus)),
this, SLOT(procFinished()) );
// Test splitArguments
//QStringList l = MyProcess::splitArguments("-opt 1 hello \"56 67\" wssx -ios");
}
void MyProcess::clearArguments() {
program = "";
arg.clear();
}
bool MyProcess::isRunning() {
return (state() == QProcess::Running);
}
void MyProcess::addArgument(const QString & a) {
if (program.isEmpty()) {
program = a;
} else {
arg.append(a);
}
}
QStringList MyProcess::arguments() {
QStringList l = arg;
l.prepend(program);
return l;
}
void MyProcess::start() {
remaining_output.clear();
QProcess::start(program, arg);
#if USE_TEMP_FILE
//bool r = temp_file.open(QIODevice::ReadOnly);
bool r = temp_file.open();
timer.start(50);
qDebug("MyProcess::start: r: %d", r);
#endif
}
void MyProcess::readStdOut() {
genericRead( readAllStandardOutput() );
}
void MyProcess::readTmpFile() {
genericRead( temp_file.readAll() );
}
void MyProcess::genericRead(QByteArray buffer) {
QByteArray ba = remaining_output + buffer;
int start = 0;
int from_pos = 0;
int pos = canReadLine(ba, from_pos);
//qDebug("MyProcess::read: pos: %d", pos);
while ( pos > -1 ) {
// Readline
//QByteArray line = ba.left(pos);
QByteArray line = ba.mid(start, pos-start);
//ba = ba.mid(pos+1);
from_pos = pos + 1;
#ifdef Q_OS_WIN
if ((from_pos < ba.size()) && (ba.at(from_pos)=='\n')) from_pos++;
#endif
start = from_pos;
emit lineAvailable(line);
pos = canReadLine(ba, from_pos);
}
remaining_output = ba.mid(from_pos);
}
int MyProcess::canReadLine(const QByteArray & ba, int from) {
int pos1 = ba.indexOf('\n', from);
int pos2 = ba.indexOf('\r', from);
//qDebug("MyProcess::canReadLine: pos2: %d", pos2);
if ( (pos1 == -1) && (pos2 == -1) ) return -1;
int pos = pos1;
if ( (pos1 != -1) && (pos2 != -1) ) {
/*
if (pos2 == (pos1+1)) pos = pos2; // \r\n
else
*/
if (pos1 < pos2) pos = pos1; else pos = pos2;
} else {
if (pos1 == -1) pos = pos2;
else
if (pos2 == -1) pos = pos1;
}
return pos;
}
/*!
Do some clean up, and be sure that all output has been read.
*/
void MyProcess::procFinished() {
qDebug("MyProcess::procFinished");
#if !USE_TEMP_FILE
qDebug("MyProcess::procFinished: Bytes available: %ld", bytesAvailable());
if ( bytesAvailable() > 0 ) readStdOut();
#else
timer.stop();
qDebug("MyProcess::procFinished: Bytes available: %ld", temp_file.bytesAvailable());
if ( temp_file.bytesAvailable() > 0 ) readTmpFile();
qDebug("MyProcess::procFinished: Bytes available: %ld", temp_file.bytesAvailable());
temp_file.close();
#endif
}
QStringList MyProcess::splitArguments(const QString & args) {
qDebug("MyProcess::splitArguments: '%s'", args.toUtf8().constData());
QStringList l;
bool opened_quote = false;
int init_pos = 0;
for (int n = 0; n < args.length(); n++) {
if ((args[n] == QChar(' ')) && (!opened_quote)) {
l.append(args.mid(init_pos, n - init_pos));
init_pos = n+1;
}
else
if (args[n] == QChar('\"')) opened_quote = !opened_quote;
if (n == args.length()-1) {
l.append(args.mid(init_pos, (n - init_pos)+1));
}
}
for (int n = 0; n < l.count(); n++) {
qDebug("MyProcess::splitArguments: arg: %d '%s'", n, l[n].toUtf8().constData());
}
return l;
}
#include "moc_myprocess.cpp"
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