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/*
* Copyright (C) 2003-2005 Justin Karneges <justin@affinix.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
#include "lineconverter.h"
namespace gpgQCAPlugin {
void LineConverter::setup(LineConverter::Mode m)
{
state = Normal;
mode = m;
prebytes = 0;
list.clear();
}
QByteArray LineConverter::update(const QByteArray &buf)
{
if (mode == Read) {
// Convert buf to UNIX line ending style
// If buf ends with '\r' set state to Partival
QByteArray out;
if (state == Normal) {
out = buf;
} else {
out.resize(buf.size() + 1);
out[0] = '\r';
memcpy(out.data() + 1, buf.data(), buf.size());
}
int n = 0;
while (true) {
n = out.indexOf('\r', n);
// not found
if (n == -1) {
break;
}
// found, not last character
if (n < (buf.size() - 1)) {
// found windows line ending "\r\n"
if (out[n + 1] == '\n') {
// clip out the '\r'
memmove(out.data() + n, out.data() + n + 1, out.size() - n - 1);
out.resize(out.size() - 1);
}
}
// found, last character
else {
state = Partial;
break;
}
++n;
}
return out;
} else {
// On Windows use DOS line ending style.
// On UNIX don't do any convertation. Return buf as is.
#ifdef Q_OS_WIN
QByteArray out;
int prev = 0;
int at = 0;
while (1) {
int n = buf.indexOf('\n', at);
if (n == -1)
break;
int chunksize = n - at;
const int oldsize = out.size();
out.resize(oldsize + chunksize + 2);
memcpy(out.data() + oldsize, buf.data() + at, chunksize);
memcpy(out.data() + oldsize + chunksize, "\r\n", 2);
list.append(prebytes + n + 1 - prev);
prebytes = 0;
prev = n;
at = n + 1;
}
if (at < buf.size()) {
const int chunksize = buf.size() - at;
const int oldsize = out.size();
out.resize(oldsize + chunksize);
memcpy(out.data() + oldsize, buf.data() + at, chunksize);
}
prebytes += buf.size() - prev;
return out;
#else
return buf;
#endif
}
}
QByteArray LineConverter::final()
{
if (mode == Read) {
QByteArray out;
if (state == Partial) {
out.resize(1);
out[0] = '\n';
}
return out;
} else {
return QByteArray();
}
}
QByteArray LineConverter::process(const QByteArray &buf)
{
return update(buf) + final();
}
int LineConverter::writtenToActual(int bytes)
{
#ifdef Q_OS_WIN
int n = 0;
int counter = bytes;
while (counter > 0) {
if (!list.isEmpty() && bytes >= list.first()) {
++n;
counter -= list.takeFirst();
} else {
if (list.isEmpty())
prebytes -= counter;
else
list.first() -= counter;
if (prebytes < 0) {
bytes += prebytes;
prebytes = 0;
}
break;
}
}
return bytes - n;
#else
return bytes;
#endif
}
} // end namespace gpgQCAPlugin
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