Chocobo1
4 years ago
committed by
GitHub
24 changed files with 235 additions and 177 deletions
@ -0,0 +1,96 @@
@@ -0,0 +1,96 @@
|
||||
/*
|
||||
* Bittorrent Client using Qt and libtorrent. |
||||
* Copyright (C) 2021 Mike Tzou (Chocobo1) |
||||
* |
||||
* 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) any later version. |
||||
* |
||||
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
||||
* |
||||
* In addition, as a special exception, the copyright holders give permission to |
||||
* link this program with the OpenSSL project's "OpenSSL" library (or with |
||||
* modified versions of it that use the same license as the "OpenSSL" library), |
||||
* and distribute the linked executables. You must obey the GNU General Public |
||||
* License in all respects for all of the code used other than "OpenSSL". If you |
||||
* modify file(s), you may extend this exception to your version of the file(s), |
||||
* but you are not obligated to do so. If you do not wish to do so, delete this |
||||
* exception statement from your version. |
||||
*/ |
||||
|
||||
#include "compare.h" |
||||
|
||||
#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`
|
||||
// Return value >0: `left` is greater than `right`
|
||||
// Return value =0: both strings are equal
|
||||
|
||||
int posL = 0; |
||||
int posR = 0; |
||||
while (true) |
||||
{ |
||||
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(); |
||||
// Compare only non-digits.
|
||||
// Numbers should be compared as a whole
|
||||
// otherwise the string->int conversion can yield a wrong value
|
||||
if ((leftChar == rightChar) && !leftChar.isDigit()) |
||||
{ |
||||
// compare next character
|
||||
++posL; |
||||
++posR; |
||||
} |
||||
else if (leftChar.isDigit() && rightChar.isDigit()) |
||||
{ |
||||
// Both are digits, compare the numbers
|
||||
|
||||
const auto numberView = [](const QString &str, int &pos) -> QStringRef |
||||
{ |
||||
const int start = pos; |
||||
while ((pos < str.size()) && str[pos].isDigit()) |
||||
++pos; |
||||
return str.midRef(start, (pos - start)); |
||||
}; |
||||
|
||||
const QStringRef numViewL = numberView(left, posL); |
||||
const QStringRef numViewR = numberView(right, posR); |
||||
|
||||
if (numViewL.length() != numViewR.length()) |
||||
return (numViewL.length() - numViewR.length()); |
||||
|
||||
// both string/view has the same length
|
||||
for (int i = 0; i < numViewL.length(); ++i) |
||||
{ |
||||
const QChar numL = numViewL[i]; |
||||
const QChar numR = numViewR[i]; |
||||
|
||||
if (numL != numR) |
||||
return (numL.unicode() - numR.unicode()); |
||||
} |
||||
|
||||
// String + digits do match and we haven't hit the end of both strings
|
||||
// then continue to consume the remainings
|
||||
} |
||||
else |
||||
{ |
||||
return (leftChar.unicode() - rightChar.unicode()); |
||||
} |
||||
} |
||||
} |
||||
#endif |
@ -0,0 +1,88 @@
@@ -0,0 +1,88 @@
|
||||
/*
|
||||
* Bittorrent Client using Qt and libtorrent. |
||||
* Copyright (C) 2021 Mike Tzou (Chocobo1) |
||||
* |
||||
* 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) any later version. |
||||
* |
||||
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
||||
* |
||||
* In addition, as a special exception, the copyright holders give permission to |
||||
* link this program with the OpenSSL project's "OpenSSL" library (or with |
||||
* modified versions of it that use the same license as the "OpenSSL" library), |
||||
* and distribute the linked executables. You must obey the GNU General Public |
||||
* License in all respects for all of the code used other than "OpenSSL". If you |
||||
* modify file(s), you may extend this exception to your version of the file(s), |
||||
* but you are not obligated to do so. If you do not wish to do so, delete this |
||||
* exception statement from your version. |
||||
*/ |
||||
|
||||
#pragma once |
||||
|
||||
#include <Qt> |
||||
#include <QtGlobal> |
||||
|
||||
#ifndef Q_OS_WIN |
||||
#define QBT_USE_QCOLLATOR |
||||
#include <QCollator> |
||||
#endif |
||||
|
||||
class QString; |
||||
|
||||
namespace Utils::Compare |
||||
{ |
||||
#ifdef QBT_USE_QCOLLATOR |
||||
template <Qt::CaseSensitivity caseSensitivity> |
||||
class NaturalCompare |
||||
{ |
||||
public: |
||||
NaturalCompare() |
||||
{ |
||||
m_collator.setNumericMode(true); |
||||
m_collator.setCaseSensitivity(caseSensitivity); |
||||
} |
||||
|
||||
int operator()(const QString &left, const QString &right) const |
||||
{ |
||||
return m_collator.compare(left, right); |
||||
} |
||||
|
||||
private: |
||||
QCollator m_collator; |
||||
}; |
||||
#else |
||||
int naturalCompare(const QString &left, const QString &right, Qt::CaseSensitivity caseSensitivity); |
||||
|
||||
template <Qt::CaseSensitivity caseSensitivity> |
||||
class NaturalCompare |
||||
{ |
||||
public: |
||||
int operator()(const QString &left, const QString &right) const |
||||
{ |
||||
return naturalCompare(left, right, caseSensitivity); |
||||
} |
||||
}; |
||||
#endif |
||||
|
||||
template <Qt::CaseSensitivity caseSensitivity> |
||||
class NaturalLessThan |
||||
{ |
||||
public: |
||||
bool operator()(const QString &left, const QString &right) const |
||||
{ |
||||
return (m_comparator(left, right) < 0); |
||||
} |
||||
|
||||
private: |
||||
NaturalCompare<caseSensitivity> m_comparator; |
||||
}; |
||||
} |
Loading…
Reference in new issue