/quassel-0.7.3/src/common/util.cpp
C++ | 171 lines | 121 code | 24 blank | 26 comment | 34 complexity | 8960093834123b947f882546b5086f3f MD5 | raw file
Possible License(s): GPL-2.0, GPL-3.0
- /***************************************************************************
- * Copyright (C) 2005-2010 by the Quassel Project *
- * devel@quassel-irc.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) version 3. *
- * *
- * 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 "util.h"
- #include <QCoreApplication>
- #include <QDebug>
- #include <QFile>
- #include <QTextCodec>
- #include "quassel.h"
- class QMetaMethod;
- QString nickFromMask(QString mask) {
- return mask.section('!', 0, 0);
- }
- QString userFromMask(QString mask) {
- QString userhost = mask.section('!', 1);
- if(userhost.isEmpty()) return QString();
- return userhost.section('@', 0, 0);
- }
- QString hostFromMask(QString mask) {
- QString userhost = mask.section('!', 1);
- if(userhost.isEmpty()) return QString();
- return userhost.section('@', 1);
- }
- bool isChannelName(QString str) {
- return QString("#&!+").contains(str[0]);
- }
- QString stripFormatCodes(QString str) {
- str.remove(QRegExp("\x03(\\d\\d?(,\\d\\d?)?)?"));
- str.remove('\x02');
- str.remove('\x0f');
- str.remove('\x12');
- str.remove('\x16');
- str.remove('\x1d');
- str.remove('\x1f');
- return str;
- }
- QString stripAcceleratorMarkers(const QString &label_) {
- QString label = label_;
- int p = 0;
- forever {
- p = label.indexOf('&', p);
- if(p < 0 || p + 1 >= label.length())
- break;
- if(label.at(p + 1).isLetterOrNumber() || label.at(p + 1) == '&')
- label.remove(p, 1);
- ++p;
- }
- return label;
- }
- QString decodeString(const QByteArray &input, QTextCodec *codec) {
- // First, we check if it's utf8. It is very improbable to encounter a string that looks like
- // valid utf8, but in fact is not. This means that if the input string passes as valid utf8, it
- // is safe to assume that it is.
- // Q_ASSERT(sizeof(const char) == sizeof(quint8)); // In God we trust...
- bool isUtf8 = true;
- int cnt = 0;
- for(int i = 0; i < input.size(); i++) {
- if(cnt) {
- // We check a part of a multibyte char. These need to be of the form 10yyyyyy.
- if((input[i] & 0xc0) != 0x80) { isUtf8 = false; break; }
- cnt--;
- continue;
- }
- if((input[i] & 0x80) == 0x00) continue; // 7 bit is always ok
- if((input[i] & 0xf8) == 0xf0) { cnt = 3; continue; } // 4-byte char 11110xxx 10yyyyyy 10zzzzzz 10vvvvvv
- if((input[i] & 0xf0) == 0xe0) { cnt = 2; continue; } // 3-byte char 1110xxxx 10yyyyyy 10zzzzzz
- if((input[i] & 0xe0) == 0xc0) { cnt = 1; continue; } // 2-byte char 110xxxxx 10yyyyyy
- isUtf8 = false; break; // 8 bit char, but not utf8!
- }
- if(isUtf8 && cnt == 0) {
- QString s = QString::fromUtf8(input);
- //qDebug() << "Detected utf8:" << s;
- return s;
- }
- //QTextCodec *codec = QTextCodec::codecForName(encoding.toAscii());
- if(!codec) return QString::fromAscii(input);
- return codec->toUnicode(input);
- }
- uint editingDistance(const QString &s1, const QString &s2) {
- uint n = s1.size()+1;
- uint m = s2.size()+1;
- QVector< QVector< uint > >matrix(n,QVector<uint>(m,0));
- for(uint i = 0; i < n; i++)
- matrix[i][0] = i;
- for(uint i = 0; i < m; i++)
- matrix[0][i] = i;
- uint min;
- for(uint i = 1; i < n; i++) {
- for(uint j = 1; j < m; j++) {
- uint deleteChar = matrix[i-1][j] + 1;
- uint insertChar = matrix[i][j-1] + 1;
- if(deleteChar < insertChar)
- min = deleteChar;
- else
- min = insertChar;
- if(s1[i-1] == s2[j-1]) {
- uint inheritChar = matrix[i-1][j-1];
- if(inheritChar < min)
- min = inheritChar;
- }
- matrix[i][j] = min;
- }
- }
- return matrix[n-1][m-1];
- }
- QString secondsToString(int timeInSeconds) {
- QList< QPair<int, QString> > timeUnit;
- timeUnit.append(qMakePair(365*24*60*60, QCoreApplication::translate("Quassel::secondsToString()", "year")));
- timeUnit.append(qMakePair(24*60*60, QCoreApplication::translate("Quassel::secondsToString()", "day")));
- timeUnit.append(qMakePair(60*60, QCoreApplication::translate("Quassel::secondsToString()", "h")));
- timeUnit.append(qMakePair(60, QCoreApplication::translate("Quassel::secondsToString()", "min")));
- timeUnit.append(qMakePair(1, QCoreApplication::translate("Quassel::secondsToString()", "sec")));
- QStringList returnString;
- for(int i=0; i < timeUnit.size(); i++) {
- int n = timeInSeconds / timeUnit[i].first;
- if(n > 0) {
- returnString += QString("%1 %2").arg(QString::number(n), timeUnit[i].second);
- }
- timeInSeconds = timeInSeconds % timeUnit[i].first;
- }
- return returnString.join(", ");
- }
- QByteArray prettyDigest(const QByteArray &digest) {
- QByteArray hexDigest = digest.toHex().toUpper();
- QByteArray prettyDigest;
- prettyDigest.fill(':', hexDigest.count() + (hexDigest.count() / 2) - 1);
- for(int i = 0; i * 2 < hexDigest.count(); i++) {
- prettyDigest.replace(i * 3, 2, hexDigest.mid(i * 2, 2));
- }
- return prettyDigest;
- }