squidy/qBittorrent
1
0
Fork 0
mirror of https://github.com/qbittorrent/qBittorrent.git synced 2026-01-01 13:18:06 -06:00
Code Issues Packages Projects Releases Wiki Activity

Improve natural sort algorithm

Browse Source 
1. Use proper case folding function instead of `toLower()`.
2. Use locale aware comparison instead of comparing unicode code points.
   Now `a` comes before `A` which is the same as the result from QCollator. A nice side effect
   is now it properly compares locale specific characters (for example `C`, `Č`).
3. Improve testing. Now the test is runnable and stable on all platforms.

PR  #20208.
This commit is contained in:
Chocobo1
2024-01-08 14:47:00 +08:00
committed by GitHub
parent e69f857828
commit 5b3b56c918
3 changed files with 42 additions and 34 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/base/utils/compare.cpp
View File

@@ -31,7 +31,6 @@
#include <QChar>
#include <QString>
#ifndef QBT_USE_QCOLLATOR
int Utils::Compare::naturalCompare(const QString &left, const QString &right, const Qt::CaseSensitivity caseSensitivity)
{
// Return value <0: `left` is smaller than `right`
@@ -45,8 +44,8 @@ int Utils::Compare::naturalCompare(const QString &left, const QString &right, co
if ((posL == left.size()) || (posR == right.size()))
return (left.size() - right.size()); // when a shorter string is another string's prefix, shorter string place before longer string
const QChar leftChar = (caseSensitivity == Qt::CaseSensitive) ? left[posL] : left[posL].toLower();
const QChar rightChar = (caseSensitivity == Qt::CaseSensitive) ? right[posR] : right[posR].toLower();
const QChar leftChar = (caseSensitivity == Qt::CaseSensitive) ? left[posL] : left[posL].toCaseFolded();
const QChar rightChar = (caseSensitivity == Qt::CaseSensitive) ? right[posR] : right[posR].toCaseFolded();
// Compare only non-digits.
// Numbers should be compared as a whole
// otherwise the string->int conversion can yield a wrong value
@@ -89,8 +88,7 @@ int Utils::Compare::naturalCompare(const QString &left, const QString &right, co
}
else
{
return (leftChar.unicode() - rightChar.unicode());
return QString::localeAwareCompare(leftChar, rightChar);
}
}
}
#endif