SeekableIF

#GSeekable is implemented by streams (implementations of #GInputStream or #GOutputStream) that support seeking.

Seekable streams largely fall into two categories: resizable and fixed-size.

#GSeekable on fixed-sized streams is approximately the same as POSIX lseek() on a block device (for example: attmepting to seek past the end of the device is an error). Fixed streams typically cannot be truncated.

#GSeekable on resizable streams is approximately the same as POSIX lseek() on a normal file. Seeking past the end and writing data will usually cause the stream to resize by introducing zero bytes.

interface SeekableIF {

GSeekable* getSeekableStruct(bool transferOwnership);

void* getStruct();

static GType getType();

bool canSeek();

bool canTruncate();

bool seek(long offset, GSeekType type, Cancellable cancellable);

long tell();

bool truncate(long offset, Cancellable cancellable);

}

Members

Functions

canSeek bool canSeek(): Tests if the stream supports the #GSeekableIface.
canTruncate bool canTruncate(): Tests if the length of the stream can be adjusted with g_seekable_truncate().
getSeekableStruct GSeekable* getSeekableStruct(bool transferOwnership): Get the main Gtk struct
getStruct void* getStruct(): the main Gtk struct as a void*
seek bool seek(long offset, GSeekType type, Cancellable cancellable): Seeks in the stream by the given @offset, modified by @type.
tell long tell(): Tells the current position within the stream.
truncate bool truncate(long offset, Cancellable cancellable): Sets the length of the stream to @offset. If the stream was previously larger than @offset, the extra data is discarded. If the stream was previouly shorter than @offset, it is extended with NUL ('\0') bytes.

Static functions

getType GType getType()

SeekableIF

Members

Functions

Static functions

Meta

Source