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java.lang.Objectcom.trolltech.qt.internal.QSignalEmitterInternal
com.trolltech.qt.QSignalEmitter
com.trolltech.qt.QtJambiObject
com.trolltech.qt.core.QDirIterator
public class QDirIterator
The QDirIterator
class provides an iterator for directory entrylists. You can use QDirIterator
to navigate entries of a directory one at a time. It is similar to QDir::entryList()
and QDir::entryInfoList()
, but because it lists entries one at a time instead of all at once, it scales better and is more suitable for large directories. It also supports listing directory contents recursively, and following symbolic links. Unlike QDir::entryList()
, QDirIterator
does not support sorting.
The QDirIterator
constructor takes a QDir
or a directory as argument. After construction, the iterator is located before the first directory entry. Here's how to iterate over all the entries sequentially:
QDirIterator it = new QDirIterator("/etc", new QDirIterator.IteratorFlags(QDirIterator.IteratorFlag.Subdirectories)); while (it.hasNext()) { System.out.println(it.next()); // /etc/. // /etc/.. // /etc/X11 // /etc/X11/fs // ... }The
next()
function returns the path to the next directory entry and advances the iterator. You can also call filePath()
to get the current file path without advancing the iterator. The fileName()
function returns only the name of the file, similar to how QDir::entryList()
works. You can also call fileInfo()
to get a QFileInfo
for the current entry. Unlike Qt's container iterators, QDirIterator
is uni-directional (i.e., you cannot iterate directories in reverse order) and does not allow random access.
QDirIterator
works with all supported file engines, and is implemented using QAbstractFileEngineIterator
.
QDir
, QDir::entryList()
, and QAbstractFileEngineIterator
.
Nested Class Summary | |
---|---|
static class |
QDirIterator.IteratorFlag
These flags can be passed to a QTreeWidgetItemIterator constructor (OR-ed together if more than one is used), so that the iterator will only iterate over items that match the given flags. |
static class |
QDirIterator.IteratorFlags
This is a flags class for com.trolltech.qt.core.QDirIterator.IteratorFlag |
Nested classes/interfaces inherited from class com.trolltech.qt.QSignalEmitter |
---|
QSignalEmitter.AbstractSignal, QSignalEmitter.Signal0, QSignalEmitter.Signal1, QSignalEmitter.Signal2, QSignalEmitter.Signal3, QSignalEmitter.Signal4, QSignalEmitter.Signal5, QSignalEmitter.Signal6, QSignalEmitter.Signal7, QSignalEmitter.Signal8, QSignalEmitter.Signal9 |
Nested classes/interfaces inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
com.trolltech.qt.internal.QSignalEmitterInternal.AbstractSignalInternal |
Field Summary |
---|
Fields inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
currentSender |
Constructor Summary | |
---|---|
QDirIterator(QDir dir)
Constructs a QDirIterator that can iterate over dir's entrylist, using dir's name filters and regular filters. |
|
QDirIterator(QDir dir,
QDirIterator.IteratorFlag[] flags)
Constructs a QDirIterator that can iterate over dir's entrylist, using dir's name filters and regular filters. |
|
QDirIterator(QDir dir,
QDirIterator.IteratorFlags flags)
Constructs a QDirIterator that can iterate over dir's entrylist, using dir's name filters and regular filters. |
|
QDirIterator(java.lang.String path)
Constructs a QDirIterator that can iterate over path. |
|
QDirIterator(java.lang.String path,
java.util.List nameFilters)
Constructs a QDirIterator that can iterate over path, using nameFilters and filters. |
|
QDirIterator(java.lang.String path,
java.util.List nameFilters,
QDir.Filters filters)
Constructs a QDirIterator that can iterate over path, using nameFilters and filters. |
|
QDirIterator(java.lang.String path,
java.util.List nameFilters,
QDir.Filters filters,
QDirIterator.IteratorFlag[] flags)
Constructs a QDirIterator that can iterate over path, using nameFilters and filters. |
|
QDirIterator(java.lang.String path,
java.util.List nameFilters,
QDir.Filters filters,
QDirIterator.IteratorFlags flags)
Constructs a QDirIterator that can iterate over path, using nameFilters and filters. |
|
QDirIterator(java.lang.String path,
QDir.Filters filter)
Constructs a QDirIterator that can iterate over path, with no name filtering and filters for entry filtering. |
|
QDirIterator(java.lang.String path,
QDir.Filters filter,
QDirIterator.IteratorFlag[] flags)
Constructs a QDirIterator that can iterate over path, with no name filtering and filters for entry filtering. |
|
QDirIterator(java.lang.String path,
QDir.Filters filter,
QDirIterator.IteratorFlags flags)
Constructs a QDirIterator that can iterate over path, with no name filtering and filters for entry filtering. |
|
QDirIterator(java.lang.String path,
QDirIterator.IteratorFlag[] flags)
Constructs a QDirIterator that can iterate over path. |
|
QDirIterator(java.lang.String path,
QDirIterator.IteratorFlags flags)
Constructs a QDirIterator that can iterate over path. |
Method Summary | |
---|---|
QFileInfo |
fileInfo()
Returns a QFileInfo for the current directory entry. |
java.lang.String |
fileName()
Returns the file name for the current directory entry, without the path prepended. |
java.lang.String |
filePath()
Returns the full file path for the current directory entry. |
boolean |
hasNext()
Returns true if there is at least one more entry in the directory; otherwise, false is returned. |
java.lang.String |
next()
Advances the iterator to the next entry, and returns the file path of this new entry. |
java.lang.String |
path()
Returns the base directory of the iterator. |
Methods inherited from class com.trolltech.qt.QtJambiObject |
---|
dispose, disposed, equals, finalize, reassignNativeResources, tr, tr, tr |
Methods inherited from class com.trolltech.qt.QSignalEmitter |
---|
blockSignals, disconnect, disconnect, signalsBlocked, signalSender, thread |
Methods inherited from class com.trolltech.qt.internal.QSignalEmitterInternal |
---|
__qt_signalInitialization |
Methods inherited from class java.lang.Object |
---|
clone, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Methods inherited from interface com.trolltech.qt.QtJambiInterface |
---|
disableGarbageCollection, nativeId, nativePointer, reenableGarbageCollection, setJavaOwnership |
Constructor Detail |
---|
public QDirIterator(QDir dir, QDirIterator.IteratorFlag[] flags)
QDirIterator
that can iterate over dir's entrylist, using dir's name filters and regular filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
The sorting in dir is ignored.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(QDir dir)
QDirIterator
that can iterate over dir's entrylist, using dir's name filters and regular filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
The sorting in dir is ignored.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(QDir dir, QDirIterator.IteratorFlags flags)
QDirIterator
that can iterate over dir's entrylist, using dir's name filters and regular filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
The sorting in dir is ignored.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, QDir.Filters filter, QDirIterator.IteratorFlag[] flags)
QDirIterator
that can iterate over path, with no name filtering and filters for entry filtering. You can pass options via flags to decide how the directory should be iterated. By default, filters is QDir::NoFilter
, and flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, QDir.Filters filter)
QDirIterator
that can iterate over path, with no name filtering and filters for entry filtering. You can pass options via flags to decide how the directory should be iterated. By default, filters is QDir::NoFilter
, and flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, QDir.Filters filter, QDirIterator.IteratorFlags flags)
QDirIterator
that can iterate over path, with no name filtering and filters for entry filtering. You can pass options via flags to decide how the directory should be iterated. By default, filters is QDir::NoFilter
, and flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, QDirIterator.IteratorFlag[] flags)
QDirIterator
that can iterate over path. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path)
QDirIterator
that can iterate over path. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, QDirIterator.IteratorFlags flags)
QDirIterator
that can iterate over path. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as in QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, java.util.List nameFilters, QDir.Filters filters, QDirIterator.IteratorFlag[] flags)
QDirIterator
that can iterate over path, using nameFilters and filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, java.util.List nameFilters, QDir.Filters filters)
QDirIterator
that can iterate over path, using nameFilters and filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, java.util.List nameFilters)
QDirIterator
that can iterate over path, using nameFilters and filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
public QDirIterator(java.lang.String path, java.util.List nameFilters, QDir.Filters filters, QDirIterator.IteratorFlags flags)
QDirIterator
that can iterate over path, using nameFilters and filters. You can pass options via flags to decide how the directory should be iterated. By default, flags is NoIteratorFlags
, which provides the same behavior as QDir::entryList()
.
hasNext()
, next()
, and IteratorFlags.
Method Detail |
---|
public final QFileInfo fileInfo()
QFileInfo
for the current directory entry. If the current entry is invalid (i.e., isValid() returns false), a null QFileInfo
is returned. filePath()
, and fileName()
.
public final java.lang.String fileName()
This function is provided for the convenience when iterating single directories. For recursive iteration, you should call filePath()
or fileInfo()
instead.
filePath()
, and fileInfo()
.
public final java.lang.String filePath()
fileInfo()
, and fileName()
.
public final boolean hasNext()
next()
, fileName()
, filePath()
, and fileInfo()
.
public final java.lang.String next()
hasNext()
returns false, this function does nothing, and returns a null QString. You can call fileName()
or filePath()
to get the current entry file name or path, or fileInfo()
to get a QFileInfo
for the current entry.
hasNext()
, fileName()
, filePath()
, and fileInfo()
.
public final java.lang.String path()
|
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