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A class for reading and writing compressed data onto a device (e.g. file, but other usages are possible, like a buffer or a socket)
To simply read/write compressed files, @see deviceForFile.
| KFilterDev ( KFilterBase * filter )
| KFilterDev |
Create a KFilterDev for a given filter (e.g. gzip, bzip2 etc.)
| KFilterDev ( KFilterBase * filter, bool autodeleteFilterBase )
| KFilterDev |
Create a KFilterDev for a given filter (e.g. gzip, bzip2 etc.) Call this with autodeleteFilterBase so that the KFilterDev owns the KFilterBase.
| ~KFilterDev ()
| ~KFilterDev |
[virtual]
| bool open ( int mode )
| open |
[virtual]
Reimplemented from QIODevice.
| void close ()
| close |
[virtual]
Reimplemented from QIODevice.
| void flush ()
| flush |
[virtual]
Reimplemented from QIODevice.
| void setOrigFileName ( const QCString & fileName )
| setOrigFileName |
For writing gzip compressed files only: set the name of the original file, to be used in the gzip header.
| uint size ()
| size |
[const virtual]
Reimplemented from QIODevice.
| int at ()
| at |
[const virtual]
Reimplemented from QIODevice.
| bool at ( int )
| at |
[virtual]
That one can be quite slow, when going back. Use with care.
Reimplemented from QIODevice.
| bool atEnd ()
| atEnd |
[const virtual]
Reimplemented from QIODevice.
| int readBlock ( char *data, uint maxlen )
| readBlock |
[virtual]
Reimplemented from QIODevice.
| int writeBlock ( const char *data, uint len )
| writeBlock |
[virtual]
Reimplemented from QIODevice.
| int getch ()
| getch |
[virtual]
Reimplemented from QIODevice.
| int putch ( int )
| putch |
[virtual]
Reimplemented from QIODevice.
| int ungetch ( int )
| ungetch |
[virtual]
Reimplemented from QIODevice.
| QIODevice* createFilterDevice (KFilterBase* base, QFile* file)
| createFilterDevice |
[static]
Call this to create the appropriate filter device for base
working on file . The returned QIODevice has to be deleted
after using.
| QIODevice * deviceForFile ( const QString & fileName, const QString & mimetype = QString::null,
bool forceFilter = false )
| deviceForFile |
[static]
Return an i/o device that is able to read from fileName,
whether it's compressed or not. Available compression filters
(gzip/bzip2 etc.) will automatically be used.
The compression filter to be used is determined from the fileName
if mimetype is empty. Pass "application/x-gzip" or "application/x-bzip2"
to force the corresponding decompression filter, if available.
Warning: application/x-bzip2 may not be available. In that case a QFile opened on the compressed data will be returned ! Use KFilterBase::findFilterByMimeType and code similar to what deviceForFile is doing, to better control what's happening.
The returned QIODevice has to be deleted after using.