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/*
* Copyright (C) 2008-2009 Manjeet Dahiya
*
* Author:
* Manjeet Dahiya
*
* Source:
* http://code.google.com/p/qxmpp
*
* This file is a part of QXmpp library.
*
* 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.
*
*/
#include "QXmppUtils.h"
#include "QXmppLogger.h"
#include <QString>
#include <QXmlStreamWriter>
#include <QByteArray>
#include <QBuffer>
#include <QImage>
#include <QImageReader>
#include <QCryptographicHash>
#include <QDateTime>
QDateTime datetimeFromString(const QString &str)
{
QRegExp tzRe("(Z|([+-])([0-9]{2}):([0-9]{2}))");
int tzPos = tzRe.indexIn(str, 19);
if (str.size() < 20 || tzPos < 0)
return QDateTime();
// process date and time
QDateTime dt = QDateTime::fromString(str.left(19), "yyyy-MM-ddThh:mm:ss");
dt.setTimeSpec(Qt::UTC);
// process milliseconds
if (tzPos > 20 && str.at(19) == '.')
{
QString millis = (str.mid(20, tzPos - 20) + "000").left(3);
dt = dt.addMSecs(millis.toInt());
}
// process time zone
if (tzRe.cap(1) != "Z")
{
int offset = tzRe.cap(3).toInt() * 3600 + tzRe.cap(4).toInt() * 60;
if (tzRe.cap(2) == "+")
dt = dt.addSecs(-offset);
else
dt = dt.addSecs(offset);
}
return dt;
}
QString datetimeToString(const QDateTime &dt)
{
return dt.toUTC().toString("yyyy-MM-ddThh:mm:ss.zzzZ");
}
QString jidToResource(const QString& jid)
{
const int pos = jid.indexOf(QChar('/'));
if (pos < 0)
return QString();
return jid.mid(pos+1);
}
QString jidToBareJid(const QString& jid)
{
const int pos = jid.indexOf(QChar('/'));
if (pos < 0)
return jid;
return jid.left(pos);
}
QString generateStanzaHash()
{
QString somechars = "1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ";
QString hashResult;
for ( int idx = 0; idx < 32; ++idx )
{
hashResult += somechars[(qrand() % 61)];
}
return hashResult;
}
void helperToXmlAddAttribute(QXmlStreamWriter* stream, const QString& name,
const QString& value)
{
if(!value.isEmpty())
stream->writeAttribute(name,value);
}
void helperToXmlAddNumberElement(QXmlStreamWriter* stream, const QString& name, int value)
{
stream->writeTextElement( name, QString::number(value));
}
void helperToXmlAddTextElement(QXmlStreamWriter* stream, const QString& name,
const QString& value)
{
if(!value.isEmpty())
stream->writeTextElement( name, value);
else
stream->writeEmptyElement(name);
}
void log(const QString& str)
{
QXmppLogger::getLogger()->log(str);
}
void log(const QByteArray& str)
{
QXmppLogger::getLogger()->log(str);
}
QString escapeString(const QString& str)
{
QString strOut = str;
strOut.replace(QChar('&'), "&");
strOut.replace(QChar('<'), "<");
strOut.replace(QChar('>'), ">");
strOut.replace(QChar('"'), """);
return strOut;
}
QString unescapeString(const QString& str)
{
QString strOut = str;
strOut.replace("<", QChar('<'));
strOut.replace(">", QChar('>'));
strOut.replace(""", QChar('"'));
strOut.replace("&", QChar('&'));
return strOut;
}
QString getImageType(const QByteArray& image)
{
QBuffer buffer;
buffer.setData(image);
buffer.open(QIODevice::ReadOnly);
QString format = QImageReader::imageFormat(&buffer);
if(format.toUpper() == "PNG")
return "image/png";
else if(format.toUpper() == "MNG")
return "video/x-mng";
else if(format.toUpper() == "GIF")
return "image/gif";
else if(format.toUpper() == "BMP")
return "image/bmp";
else if(format.toUpper() == "XPM")
return "image/x-xpm";
else if(format.toUpper() == "SVG")
return "image/svg+xml";
else if(format.toUpper() == "JPEG")
return "image/jpeg";
return "image/unknown";
}
QString getImageHash(const QByteArray& image)
{
if(image.isEmpty())
return "";
else
return QString(QCryptographicHash::hash(image,
QCryptographicHash::Sha1).toHex());
}
QImage getImageFromByteArray(const QByteArray& image)
{
QBuffer buffer;
buffer.setData(image);
buffer.open(QIODevice::ReadOnly);
QImageReader imageReader(&buffer);
return imageReader.read();
}
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