+
+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;