QDirListing::DirEntry Class

class QDirListing::DirEntry

Lista de todos los miembros, incluidos los heredados
DirEntry es parte de Entrada/Salida y Redes.

Funciones Públicas

QString	absoluteFilePath() const
QString	absolutePath() const
QString	baseName() const
QDateTime	birthTime(const QTimeZone &tz) const
QString	bundleName() const
QString	canonicalFilePath() const
QString	completeBaseName() const
QString	completeSuffix() const
bool	exists() const
QFileInfo	fileInfo() const
QString	fileName() const
QString	filePath() const
QDateTime	fileTime(QFileDevice::FileTime type, const QTimeZone &tz) const
bool	isDir() const
bool	isExecutable() const
bool	isFile() const
bool	isHidden() const
bool	isReadable() const
bool	isSymLink() const
bool	isWritable() const
QDateTime	lastModified(const QTimeZone &tz) const
QDateTime	lastRead(const QTimeZone &tz) const
QDateTime	metadataChangeTime(const QTimeZone &tz) const
qint64	size() const
QString	suffix() const

Descripción Detallada

La desreferenciación de un QDirListing::const_iterator válido devuelve un objeto DirEntry.

DirEntry ofrece un subconjunto de la API de QFileInfo(por ejemplo, fileName(), filePath(), exists()). Internamente, DirEntry sólo construye un objeto QFileInfo si es necesario, es decir, si la información no ha sido ya obtenida por otras funciones del sistema. Puede utilizar DirEntry::fileInfo() para obtener un QFileInfo. Por ejemplo:

using ItFlag = QDirListing::IteratorFlag;
for (const auto &dirEntry : QDirListing(u"/etc"_s, ItFlag::Recursive)) {
    // Faster
    if (dirEntry.fileName().endsWith(u".conf")) { /* ... */ }

    // This works, but might be potentially slower, since it has to construct a
    // QFileInfo, whereas (depending on the implementation) the fileName could
    // be known already
    if (dirEntry.fileInfo().fileName().endsWith(u".conf")) { /* ... */ }
}
using ItFlag = QDirListing::IteratorFlag;
for (const auto &dirEntry : QDirListing(u"/etc"_s, ItFlag::Recursive)) {
    // Both approaches are the same, because DirEntry will have to construct
    // a QFileInfo to get this info (for example, by calling system stat())

    if (dirEntry.size() >= 4'000 /* 4KB */) { /* ...*/ }
    if (dirEntry.fileInfo().size() >= 4'000 /* 4KB */) { /* ... */ }
}

Documentación de funciones miembro

QFileInfo DirEntry::fileInfo() const

QString DirEntry::fileName() const

QString DirEntry::baseName() const

QString DirEntry::completeBaseName() const

QString DirEntry::suffix() const

QString DirEntry::bundleName() const

QString DirEntry::completeSuffix() const

QString DirEntry::filePath() const

QString DirEntry::canonicalFilePath() const

QString DirEntry::absoluteFilePath() const

QString DirEntry::absolutePath() const

bool DirEntry::isDir() const

bool DirEntry::isFile() const

bool DirEntry::isSymLink() const

bool DirEntry::exists() const

bool DirEntry::isHidden() const

bool DirEntry::isReadable() const

bool DirEntry::isWritable() const

bool DirEntry::isExecutable() const

qint64 DirEntry::size() const

QDateTime DirEntry::fileTime(QFileDevice::FileTime type, const QTimeZone &tz) const

QDateTime DirEntry::birthTime(const QTimeZone &tz) const

QDateTime DirEntry::metadataChangeTime(const QTimeZone &tz) const

QDateTime DirEntry::lastModified(const QTimeZone &tz) const

QDateTime DirEntry::lastRead(const QTimeZone &tz) const

Consulte los métodos QFileInfo con los mismos nombres.

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