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/*
Copyright (c) 2011-2012 - Tőkés Attila
This file is part of SmtpClient for Qt.
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.
See the LICENSE file for more details.
*/
#include "smtp/quotedprintable.h"
QString QuotedPrintable::encode(const QByteArray &input) {
QString output;
char byte;
const char hex[] = {'0', '1', '2', '3', '4', '5', '6', '7',
'8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
for (char i : input) {
byte = i;
if ((byte == 0x20) || ((byte >= 33) && (byte <= 126) && (byte != 61))) {
output.append(byte);
} else {
output.append('=');
output.append(hex[((byte >> 4) & 0x0F)]);
output.append(hex[(byte & 0x0F)]);
}
}
return output;
}
QByteArray QuotedPrintable::decode(const QString &input) {
// 0 1 2 3 4 5 6 7 8 9 : ; < = > ? @ A B
// C D E F
const int hexVal[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0,
0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15};
QByteArray output;
for (int i = 0; i < input.length(); ++i) {
if (input.at(i).toLatin1() == '=') {
output.append((hexVal[input.at(i + 1).toLatin1() - '0'] << 4) +
hexVal[input.at(i + 2).toLatin1() - '0']);
i += 2;
} else {
output.append(input.at(i).toLatin1());
}
}
return output;
}
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