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GObject.Object
parent-child marker Gio.InputStream
Gio.FilterInputStream
Gio.BufferedInputStream
Gio.DataInputStream

Class Gio.DataInputStream

Import line:	Gio = imports.gi.Gio;
GIR File:	Gio-2.0.gir
C documentation:	GDataInputStream
Class :	DataInputStream
Extends:	Gio.BufferedInputStream

Data input stream implements GInputStream and includes functions for
reading structured data directly from a binary input stream.

Properties
Properties		Defined By
	base_stream : Gio.InputStream	Gio.FilterInputStream
	buffer_size : guint32	Gio.BufferedInputStream
	byte_order : Gio.DataStreamByteOrder	Gio.DataInputStream
	close_base_stream : gboolean	Gio.FilterInputStream
	newline_type : Gio.DataStreamNewlineType	Gio.DataInputStream
	parent_instance : Gio.BufferedInputStream read only	Gio.DataInputStream
	priv : Gio.DataInputStreamPrivate read only	Gio.DataInputStream

Methods / Constructors
Method / Constructor		Defined By
	new Gio.DataInputStream (Object *properties) Create a new Gio.DataInputStream Create a new Gio.DataInputStream Parameters: Object properties*
	new Gio.DataInputStream.c_new (InputStream *base_stream) : Gio.DataInputStream Create a new Gio.DataInputStream Create a new Gio.DataInputStream Parameters: Gio.InputStream base_stream* Required (not null) a GInputStream. Returns: Gio.DataInputStream a new GDataInputStream.
	clear_pending () : none Clears the pending flag on stream. Clears the pending flag on stream. Returns: none	Gio.InputStream
	close (Cancellable *cancellable) : gboolean Closes the stream, releasing resources related to it. Closes the stream, releasing resources related to it. Once the stream is closed, all other operations will return G_IO_ERROR_CLOSED. Closing a stream multiple times will not return an error. Streams will be automatically closed when the last reference is dropped, but you might want to call this function to make sure resources are released as early as possible. Some streams might keep the backing store of the stream (e.g. a file descriptor) open after the stream is closed. See the documentation for the individual stream for details. On failure the first error that happened will be reported, but the close operation will finish as much as possible. A stream that failed to close will still return G_IO_ERROR_CLOSED* for all operations. Still, it is important to check and report the error to the user. If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. Cancelling a close will still leave the stream closed, but some streams can use a faster close that doesn't block to e.g. check errors. Parameters: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gboolean TRUE on success, FALSE on failure	Gio.InputStream
	close_async (gint32 *io_priority, Cancellable cancellable, Function callback, void *user_data) : none Requests an asynchronous closes of the stream, releasing resources related to it. Requests an asynchronous closes of the stream, releasing resources related to it. When the operation is finished callback* will be called. You can then call g_input_stream_close_finish() to get the result of the operation. For behaviour details see g_input_stream_close(). The asyncronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one you must override all. Parameters: gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional cancellable object Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied void user_data Required (not null) the data to pass to callback function Returns: none	Gio.InputStream
	close_finish (AsyncResult *result) : gboolean Finishes closing a stream asynchronously, started from g_input_stream_close_async(). Finishes closing a stream asynchronously, started from g_input_stream_close_async(). Parameters: Gio.AsyncResult result* Required (not null) a GAsyncResult. Returns: gboolean TRUE if the stream was closed successfully.	Gio.InputStream
	fill (gint32 *count, Cancellable cancellable) : gint32 Tries to read count* bytes from the stream into the buffer. Tries to read count bytes from the stream into the buffer. Will block during this read. If count is zero, returns zero and does nothing. A value of count larger than G_MAXSSIZE will cause a G_IO_ERROR_INVALID_ARGUMENT error. On success, the number of bytes read into the buffer is returned. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file. Zero is returned on end of file (or if count is zero), but never otherwise. If count is -1 then the attempted read size is equal to the number of bytes that are required to fill the buffer. If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error. On error -1 is returned and error is set accordingly. For the asynchronous, non-blocking, version of this function, see g_buffered_input_stream_fill_async(). or -1 on error. Parameters: gint32 count Required (not null) the number of bytes that will be read from the stream Gio.Cancellable cancellable optional GCancellable object, NULL to ignore Returns: gint32 the number of bytes read into stream's buffer, up to count,	Gio.BufferedInputStream
	fill_async (gint32 *count, gint32 io_priority, Cancellable cancellable, Function callback, void *user_data) : none Reads data into stream's buffer asynchronously, up to count* size. Reads data into stream's buffer asynchronously, up to count size. version of this function, see g_buffered_input_stream_fill(). If count is -1 then the attempted read size is equal to the number of bytes that are required to fill the buffer. Parameters: gint32 count Required (not null) the number of bytes that will be read from the stream gint32 io_priority Required (not null) the I/O priority of the request Gio.Cancellable cancellable optional GCancellable object Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) a GAsyncReadyCallback* void* user_data Required (not null) a gpointer Returns: none	Gio.BufferedInputStream
	fill_finish (AsyncResult *result) : gint32 Finishes an asynchronous read. Finishes an asynchronous read. Parameters: Gio.AsyncResult result* Required (not null) a GAsyncResult Returns: gint32 a gssize of the read stream, or %-1 on an error.	Gio.BufferedInputStream
	get_available () : guint32 Gets the size of the available data within the stream. Gets the size of the available data within the stream. Returns: guint32 size of the available stream.	Gio.BufferedInputStream
	get_base_stream () : Gio.InputStream Gets the base stream for the filter stream. Gets the base stream for the filter stream. Returns: Gio.InputStream a GInputStream.	Gio.FilterInputStream
	get_buffer_size () : guint32 Gets the size of the input buffer. Gets the size of the input buffer. Returns: guint32 the current buffer size.	Gio.BufferedInputStream
	get_byte_order () : Gio.DataStreamByteOrder Gets the byte order for the data input stream. Gets the byte order for the data input stream. Returns: Gio.DataStreamByteOrder the stream's current GDataStreamByteOrder.	Gio.DataInputStream
	get_close_base_stream () : gboolean Returns whether the base stream will be closed when stream is closed. Returns whether the base stream will be closed when stream is closed. Returns: gboolean TRUE if the base stream will be closed.	Gio.FilterInputStream
	get_newline_type () : Gio.DataStreamNewlineType Gets the current newline type for the stream. Gets the current newline type for the stream. Returns: Gio.DataStreamNewlineType GDataStreamNewlineType for the given stream.	Gio.DataInputStream
	has_pending () : gboolean Checks if an input stream has pending actions. Checks if an input stream has pending actions. Returns: gboolean TRUE if stream has pending actions.	Gio.InputStream
	is_closed () : gboolean Checks if an input stream is closed. Checks if an input stream is closed. Returns: gboolean TRUE if the stream is closed.	Gio.InputStream
	peek (void* *buffer, guint32 offset, guint32 count) : guint32 Peeks in the buffer, copying data of size count* into buffer, offset offset bytes. Peeks in the buffer, copying data of size count into buffer, offset offset bytes. Parameters: void* buffer Required (not null) a pointer to an allocated chunk of memory guint32 offset Required (not null) a gsize guint32 count Required (not null) a gsize Returns: guint32 a gsize of the number of bytes peeked, or -1 on error.	Gio.BufferedInputStream
	peek_buffer (Object *out_values) : String Returns the buffer with the currently available bytes. Returns the buffer with the currently available bytes. The returned buffer must not be modified and will become invalid when reading from the stream or filling the buffer. read-only buffer Parameters: Object out_values* guint32 count Returns: String	Gio.BufferedInputStream
	read (void* *buffer, guint32 count, Cancellable cancellable) : gint32 Tries to read count* bytes from the stream into the buffer starting at If count is zero returns zero and does nothing. Tries to read count bytes from the stream into the buffer starting at If count is zero returns zero and does nothing. A value of count larger than G_MAXSSIZE will cause a G_IO_ERROR_INVALID_ARGUMENT error. On success, the number of bytes read into the buffer is returned. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file. Zero is returned on end of file (or if count is zero), but never otherwise. If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error. On error -1 is returned and error is set accordingly. Parameters: void* buffer Required (not null) a buffer to read data into (which should be at least count bytes long). guint32 count Required (not null) the number of bytes that will be read from the stream Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gint32 Number of bytes read, or -1 on error	Gio.InputStream
	read_all (void* *buffer, guint32 count, Object out_values, Cancellable cancellable) : gboolean Tries to read count* bytes from the stream into the buffer starting at This function is similar to g_input_stream_read(), except it tries to read as many bytes as requested, only stopping on an error or end of stream. Tries to read count bytes from the stream into the buffer starting at This function is similar to g_input_stream_read(), except it tries to read as many bytes as requested, only stopping on an error or end of stream. On a successful read of count bytes, or if we reached the end of the stream, TRUE is returned, and bytes_read is set to the number of bytes read into buffer. If there is an error during the operation FALSE is returned and error is set to indicate the error status, bytes_read is updated to contain the number of bytes read into buffer before the error occurred. Parameters: void* buffer Required (not null) a buffer to read data into (which should be at least count bytes long). guint32 count Required (not null) the number of bytes that will be read from the stream Object out_values guint32 bytes_read Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gboolean TRUE on success, FALSE if there was an error	Gio.InputStream
	read_async (void* *buffer, guint32 count, gint32 io_priority, Cancellable cancellable, Function callback, void *user_data) : none Request an asynchronous read of count* bytes from the stream into the buffer starting at buffer. Request an asynchronous read of count bytes from the stream into the buffer starting at buffer. When the operation is finished callback will be called. You can then call g_input_stream_read_finish() to get the result of the operation. During an async request no other sync and async calls are allowed on stream, and will result in G_IO_ERROR_PENDING errors. A value of count larger than G_MAXSSIZE will cause a G_IO_ERROR_INVALID_ARGUMENT error. On success, the number of bytes read into the buffer will be passed to the callback. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file, but generally we try to read as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise. Any outstanding i/o request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is G_PRIORITY_DEFAULT. The asyncronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one you must override all. Parameters: void* buffer Required (not null) a buffer to read data into (which should be at least count bytes long). guint32 count Required (not null) the number of bytes that will be read from the stream gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied void user_data Required (not null) the data to pass to callback function Returns: none	Gio.InputStream
	read_byte (Cancellable *cancellable) : guint8 Reads an unsigned 8-bit/1-byte value from stream. Reads an unsigned 8-bit/1-byte value from stream. if an error occurred. Parameters: Gio.Cancellable cancellable* optional GCancellable object, NULL to ignore. Returns: guint8 an unsigned 8-bit/1-byte value read from the stream or %0	Gio.DataInputStream
	read_finish (AsyncResult *result) : gint32 Finishes an asynchronous stream read operation. Finishes an asynchronous stream read operation. Parameters: Gio.AsyncResult result* Required (not null) a GAsyncResult. Returns: gint32 number of bytes read in, or -1 on error.	Gio.InputStream
	read_int16 (Cancellable *cancellable) : gint16 Reads a 16-bit/2-byte value from stream. Reads a 16-bit/2-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order(). an error occurred. Parameters: Gio.Cancellable cancellable* optional GCancellable object, NULL to ignore. Returns: gint16 a signed 16-bit/2-byte value read from stream or %0 if	Gio.DataInputStream
	read_int32 (Cancellable *cancellable) : gint32 Reads a signed 32-bit/4-byte value from stream. Reads a signed 32-bit/4-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order(). If cancellable* is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. an error occurred. Parameters: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gint32 a signed 32-bit/4-byte value read from the stream or %0 if	Gio.DataInputStream
	read_int64 (Cancellable *cancellable) : gint64 Reads a 64-bit/8-byte value from stream. Reads a 64-bit/8-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order(). If cancellable* is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. an error occurred. Parameters: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gint64 a signed 64-bit/8-byte value read from stream or %0 if	Gio.DataInputStream
	read_line (Object *out_values, Cancellable cancellable) : String Reads a line from the data input stream. Reads a line from the data input stream. If cancellable* is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. (without the newlines). Set length to a gsize to get the length of the read line. On an error, it will return NULL and still return NULL, but error won't be set. Parameters: Object out_values guint32 length Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: String a string with the line that was read in	Gio.DataInputStream
	read_line_async (gint32 *io_priority, Cancellable cancellable, Function callback, void *user_data) : none The asynchronous version of g_data_input_stream_read_line(). The asynchronous version of g_data_input_stream_read_line(). It is an error to have two outstanding calls to this function. When the operation is finished, callback* will be called. You can then call g_data_input_stream_read_line_finish() to get the result of the operation. Parameters: gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied. void user_data Required (not null) the data to pass to callback function. Returns: none	Gio.DataInputStream
	read_line_finish (AsyncResult *result, Object out_values) : String Finish an asynchronous call started by g_data_input_stream_read_line_async(). Finish an asynchronous call started by g_data_input_stream_read_line_async(). (without the newlines). Set length* to a gsize to get the length of the read line. On an error, it will return NULL and still return NULL, but error won't be set. Parameters: Gio.AsyncResult result Required (not null) the GAsyncResult that was provided to the callback. Object out_values guint32 length Returns: String a string with the line that was read in	Gio.DataInputStream
	read_uint16 (Cancellable *cancellable) : guint16 Reads an unsigned 16-bit/2-byte value from stream. Reads an unsigned 16-bit/2-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order(). an error occurred. Parameters: Gio.Cancellable cancellable* optional GCancellable object, NULL to ignore. Returns: guint16 an unsigned 16-bit/2-byte value read from the stream or %0 if	Gio.DataInputStream
	read_uint32 (Cancellable *cancellable) : guint32 Reads an unsigned 32-bit/4-byte value from stream. Reads an unsigned 32-bit/4-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order(). If cancellable* is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. an error occurred. Parameters: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: guint32 an unsigned 32-bit/4-byte value read from the stream or %0 if	Gio.DataInputStream
	read_uint64 (Cancellable *cancellable) : guint64 Reads an unsigned 64-bit/8-byte value from stream. Reads an unsigned 64-bit/8-byte value from stream. In order to get the correct byte order for this read operation, see g_data_input_stream_get_byte_order(). If cancellable* is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. an error occurred. Parameters: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: guint64 an unsigned 64-bit/8-byte read from stream or %0 if	Gio.DataInputStream
	read_until (String *stop_chars, Object out_values, Cancellable cancellable) : String Reads a string from the data input stream, up to the first occurrence of any of the stop characters. Reads a string from the data input stream, up to the first occurrence of any of the stop characters. Note that, in contrast to g_data_input_stream_read_until_async(), this function consumes the stop character that it finds. Don't use this function in new code. Its functionality is inconsistent with g_data_input_stream_read_until_async(). Both functions will be marked as deprecated in a future release. Use g_data_input_stream_read_upto() instead, but note that that function does not consume the stop character. before encountering any of the stop characters. Set length* to a gsize to get the length of the string. This function will return NULL on an error. Parameters: String stop_chars Required (not null) characters to terminate the read. Object out_values guint32 length Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: String a string with the data that was read	Gio.DataInputStream
	read_until_async (String *stop_chars, gint32 io_priority, Cancellable cancellable, Function callback, void *user_data) : none The asynchronous version of g_data_input_stream_read_until(). The asynchronous version of g_data_input_stream_read_until(). It is an error to have two outstanding calls to this function. Note that, in contrast to g_data_input_stream_read_until(), this function does not consume the stop character that it finds. You must read it for yourself. When the operation is finished, callback* will be called. You can then call g_data_input_stream_read_until_finish() to get the result of the operation. Don't use this function in new code. Its functionality is inconsistent with g_data_input_stream_read_until(). Both functions will be marked as deprecated in a future release. Use g_data_input_stream_read_upto_async() instead. Parameters: String stop_chars Required (not null) characters to terminate the read. gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied. void user_data Required (not null) the data to pass to callback function. Returns: none	Gio.DataInputStream
	read_until_finish (AsyncResult *result, Object out_values) : String Finish an asynchronous call started by g_data_input_stream_read_until_async(). Finish an asynchronous call started by g_data_input_stream_read_until_async(). before encountering any of the stop characters. Set length* to a gsize to get the length of the string. This function will return NULL on an error. Parameters: Gio.AsyncResult result Required (not null) the GAsyncResult that was provided to the callback. Object out_values guint32 length Returns: String a string with the data that was read	Gio.DataInputStream
	read_upto (String *stop_chars, gint32 stop_chars_len, Object out_values, Cancellable cancellable) : String Reads a string from the data input stream, up to the first occurrence of any of the stop characters. Reads a string from the data input stream, up to the first occurrence of any of the stop characters. In contrast to g_data_input_stream_read_until(), this function does not consume the stop character. You have to use g_data_input_stream_read_byte() to get it before calling g_data_input_stream_read_upto() again. Note that stop_chars* may contain '\0' if stop_chars_len is specified. before encountering any of the stop characters. Set length to a gsize to get the length of the string. This function will return NULL on an error Parameters: String stop_chars Required (not null) characters to terminate the read gint32 stop_chars_len Required (not null) length of stop_chars. May be -1 if stop_chars is nul-terminated Object out_values guint32 length Gio.Cancellable cancellable optional GCancellable object, NULL to ignore Returns: String a string with the data that was read	Gio.DataInputStream
	read_upto_async (String *stop_chars, gint32 stop_chars_len, gint32 io_priority, Cancellable cancellable, Function callback, void *user_data) : none The asynchronous version of g_data_input_stream_read_upto(). The asynchronous version of g_data_input_stream_read_upto(). It is an error to have two outstanding calls to this function. In contrast to g_data_input_stream_read_until(), this function does not consume the stop character. You have to use g_data_input_stream_read_byte() to get it before calling g_data_input_stream_read_upto() again. Note that stop_chars* may contain '\0' if stop_chars_len is specified. When the operation is finished, callback will be called. You can then call g_data_input_stream_read_upto_finish() to get the result of the operation. Parameters: String stop_chars Required (not null) characters to terminate the read gint32 stop_chars_len Required (not null) length of stop_chars. May be -1 if stop_chars is nul-terminated gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional GCancellable object, NULL to ignore Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied void user_data Required (not null) the data to pass to callback function Returns: none	Gio.DataInputStream
	read_upto_finish (AsyncResult *result, Object out_values) : String Finish an asynchronous call started by g_data_input_stream_read_upto_async(). Finish an asynchronous call started by g_data_input_stream_read_upto_async(). Note that this function does not consume the stop character. You have to use g_data_input_stream_read_byte() to get it before calling g_data_input_stream_read_upto_async() again. before encountering any of the stop characters. Set length* to a gsize to get the length of the string. This function will return NULL on an error. Parameters: Gio.AsyncResult result Required (not null) the GAsyncResult that was provided to the callback Object out_values guint32 length Returns: String a string with the data that was read	Gio.DataInputStream
	set_buffer_size (guint32 *size) : none Sets the size of the internal buffer of stream* to size, or to the size of the contents of the buffer. Sets the size of the internal buffer of stream to size, or to the size of the contents of the buffer. The buffer can never be resized smaller than its current contents. Parameters: guint32 size Required (not null) a gsize Returns: none	Gio.BufferedInputStream
	set_byte_order (DataStreamByteOrder *order) : none This function sets the byte order for the given stream. This function sets the byte order for the given stream. All subsequent reads from the stream* will be read in the given order. Parameters: Gio.DataStreamByteOrder order Required (not null) a GDataStreamByteOrder to set. Returns: none	Gio.DataInputStream
	set_close_base_stream (gboolean *close_base) : none Sets whether the base stream will be closed when stream* is closed. Sets whether the base stream will be closed when stream is closed. Parameters: gboolean close_base Required (not null) TRUE to close the base stream. Returns: none	Gio.FilterInputStream
	set_newline_type (DataStreamNewlineType *type) : none Sets the newline type for the stream. Sets the newline type for the stream. Note that using G_DATA_STREAM_NEWLINE_TYPE_ANY is slightly unsafe. If a read chunk ends in "CR" we must read an additional byte to know if this is "CR" or "CR LF", and this might block if there is no more data availible. Parameters: Gio.DataStreamNewlineType type* Required (not null) the type of new line return as GDataStreamNewlineType. Returns: none	Gio.DataInputStream
	set_pending () : gboolean Sets stream to have actions pending. Sets stream to have actions pending. If the pending flag is already set or stream is closed, it will return FALSE and set Returns: gboolean TRUE if pending was previously unset and is now set.	Gio.InputStream
	skip (guint32 *count, Cancellable cancellable) : gint32 Tries to skip count* bytes from the stream. Tries to skip count bytes from the stream. Will block during the operation. This is identical to g_input_stream_read(), from a behaviour standpoint, but the bytes that are skipped are not returned to the user. Some streams have an implementation that is more efficient than reading the data. This function is optional for inherited classes, as the default implementation emulates it using read. If cancellable is not NULL, then the operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled, the error G_IO_ERROR_CANCELLED will be returned. If an operation was partially finished when the operation was cancelled the partial result will be returned, without an error. Parameters: guint32 count Required (not null) the number of bytes that will be skipped from the stream Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Returns: gint32 Number of bytes skipped, or -1 on error	Gio.InputStream
	skip_async (guint32 *count, gint32 io_priority, Cancellable cancellable, Function callback, void *user_data) : none Request an asynchronous skip of count* bytes from the stream. Request an asynchronous skip of count bytes from the stream. When the operation is finished callback will be called. You can then call g_input_stream_skip_finish() to get the result of the operation. During an async request no other sync and async calls are allowed, and will result in G_IO_ERROR_PENDING errors. A value of count larger than G_MAXSSIZE will cause a G_IO_ERROR_INVALID_ARGUMENT error. On success, the number of bytes skipped will be passed to the callback. It is not an error if this is not the same as the requested size, as it can happen e.g. near the end of a file, but generally we try to skip as many bytes as requested. Zero is returned on end of file (or if count is zero), but never otherwise. Any outstanding i/o request with higher priority (lower numerical value) will be executed before an outstanding request with lower priority. Default priority is G_PRIORITY_DEFAULT. The asynchronous methods have a default fallback that uses threads to implement asynchronicity, so they are optional for inheriting classes. However, if you override one, you must override all. Parameters: guint32 count Required (not null) the number of bytes that will be skipped from the stream gint32 io_priority Required (not null) the I/O priority of the request. Gio.Cancellable cancellable optional GCancellable object, NULL to ignore. Function (Object *source_object, AsyncResult res, void *user_data) : none Required (not null) callback to call when the request is satisfied void user_data Required (not null) the data to pass to callback function Returns: none	Gio.InputStream
	skip_finish (AsyncResult *result) : gint32 Finishes a stream skip operation. Finishes a stream skip operation. Parameters: Gio.AsyncResult result* Required (not null) a GAsyncResult. Returns: gint32 the size of the bytes skipped, or %-1 on error.	Gio.InputStream

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Class Gio.DataInputStream