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Use slice method where applicable

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These code segments already have its boundary checked and can thus be faster.

PR #22411.
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Chocobo1 2025-03-15 14:58:59 +08:00 • committed by GitHub
parent d174bc75e4
commit 5a4b3b25d3
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23 changed files with 113 additions and 63 deletions
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30
src/base/path.cpp
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@ -94,7 +94,13 @@ bool Path::isValid() const
#if defined(Q_OS_WIN)
QStringView view = m_pathStr;
if (hasDriveLetter(view))
view = view.mid(3);
{
#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
view.slice(3);
#else
view = view.sliced(3);
#endif
}
// \\37 is using base-8 number system
const QRegularExpression regex {u"[\\0-\\37:?\"*<>|]"_s};
@ -147,9 +153,9 @@ Path Path::rootItem() const
#ifdef Q_OS_WIN
// should be `c:/` instead of `c:`
if ((slashIndex == 2) && hasDriveLetter(m_pathStr))
return createUnchecked(m_pathStr.left(slashIndex + 1));
return createUnchecked(m_pathStr.first(slashIndex + 1));
#endif
return createUnchecked(m_pathStr.left(slashIndex));
return createUnchecked(m_pathStr.first(slashIndex));
}
Path Path::parentPath() const
@ -167,9 +173,9 @@ Path Path::parentPath() const
// should be `c:/` instead of `c:`
// Windows "drive letter" is limited to one alphabet
if ((slashIndex == 2) && hasDriveLetter(m_pathStr))
return (m_pathStr.size() == 3) ? Path() : createUnchecked(m_pathStr.left(slashIndex + 1));
return (m_pathStr.size() == 3) ? Path() : createUnchecked(m_pathStr.first(slashIndex + 1));
#endif
return createUnchecked(m_pathStr.left(slashIndex));
return createUnchecked(m_pathStr.first(slashIndex));
}
QString Path::filename() const
@ -178,7 +184,7 @@ QString Path::filename() const
if (slashIndex == -1)
return m_pathStr;
return m_pathStr.mid(slashIndex + 1);
return m_pathStr.sliced(slashIndex + 1);
}
QString Path::extension() const
@ -188,9 +194,9 @@ QString Path::extension() const
return (u"." + suffix);
const int slashIndex = m_pathStr.lastIndexOf(u'/');
const auto filename = QStringView(m_pathStr).mid(slashIndex + 1);
const auto filename = QStringView(m_pathStr).sliced(slashIndex + 1);
const int dotIndex = filename.lastIndexOf(u'.', -2);
return ((dotIndex == -1) ? QString() : filename.mid(dotIndex).toString());
return ((dotIndex == -1) ? QString() : filename.sliced(dotIndex).toString());
}
bool Path::hasExtension(const QStringView ext) const
@ -293,7 +299,7 @@ Path Path::commonPath(const Path &left, const Path &right)
if (commonItemsCount > 0)
commonPathSize += (commonItemsCount - 1); // size of intermediate separators
return Path::createUnchecked(left.m_pathStr.left(commonPathSize));
return Path::createUnchecked(left.m_pathStr.first(commonPathSize));
}
Path Path::findRootFolder(const PathList &filePaths)
@ -322,7 +328,13 @@ void Path::stripRootFolder(PathList &filePaths)
return;
for (Path &filePath : filePaths)
{
#if QT_VERSION >= QT_VERSION_CHECK(6, 8, 0)
filePath.m_pathStr.slice(commonRootFolder.m_pathStr.size() + 1);
#else
filePath.m_pathStr.remove(0, (commonRootFolder.m_pathStr.size() + 1));
#endif
}
}
void Path::addRootFolder(PathList &filePaths, const Path &rootFolder)