mirrors/qBittorrent
1
0
Fork 0
mirror of https://github.com/qbittorrent/qBittorrent.git synced 2024-11-25 10:46:15 +03:00
Code Issues Projects Releases Packages Wiki Activity

Merge pull request #2041 from sorokin/optimize-natural-sort

Browse source 
Optimize misc::naturalSort()
This commit is contained in:
sledgehammer999 2014-10-19 18:57:14 +03:00
commit 2203d0a043
1 changed files with 22 additions and 10 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

32
src/misc.cpp
View file

@ -571,15 +571,29 @@ QString misc::toQString(time_t t)
bool misc::naturalSort(QString left, QString right, bool &result) { // uses lessThan comparison
// Return value indicates if functions was successful
// result argument will contain actual comparison result if function was successful
int posL = 0;
int posR = 0;
do {
int posL = left.indexOf(QRegExp("[0-9]"));
int posR = right.indexOf(QRegExp("[0-9]"));
if (posL == -1 || posR == -1)
break; // No data
else if (posL != posR)
break; // Digit positions mismatch
else if (left.left(posL) != right.left(posR))
break; // Strings' subsets before digit do not match
for (;;) {
if (posL == left.size() || posR == right.size())
return false; // No data
QChar leftChar = left.at(posL);
QChar rightChar = right.at(posR);
bool leftCharIsDigit = leftChar.isDigit();
bool rightCharIsDigit = rightChar.isDigit();
if (leftCharIsDigit != rightCharIsDigit)
return false; // Digit positions mismatch
if (leftCharIsDigit)
break; // Both are digit, break this loop and compare numbers
if (leftChar != rightChar)
return false; // Strings' subsets before digit do not match
++posL;
++posR;
}
QString temp;
while (posL < left.size()) {
@ -608,8 +622,6 @@ bool misc::naturalSort(QString left, QString right, bool &result) { // uses less
// Strings + digits do match and we haven't hit string end
// Do another round
left.remove(0, posL);
right.remove(0, posR);
} while (true);