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

Class Gio.BufferedInputStream

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

Buffered input stream implements GFilterInputStream and provides
for buffered reads.
By default, GBufferedInputStream's buffer size is set at 4 kilobytes.
To create a buffered input stream, use g_buffered_input_stream_new(),
or g_buffered_input_stream_new_sized() to specify the buffer's size at
construction.
To get the size of a buffer within a buffered input stream, use
g_buffered_input_stream_get_buffer_size(). To change the size of a
buffered input stream's buffer, use
g_buffered_input_stream_set_buffer_size(). Note that the buffer's size
cannot be reduced below the size of the data within the buffer.

Properties
Properties		Defined By
	base_stream : Gio.InputStream	Gio.FilterInputStream
	buffer_size : guint32	Gio.BufferedInputStream
	close_base_stream : gboolean	Gio.FilterInputStream
	parent_instance : Gio.FilterInputStream read only	Gio.BufferedInputStream
	priv : Gio.BufferedInputStreamPrivate read only	Gio.BufferedInputStream

Methods / Constructors
Method / Constructor		Defined By
	new Gio.BufferedInputStream (Object *properties) Create a new Gio.BufferedInputStream Create a new Gio.BufferedInputStream Parameters: Object properties*
	new Gio.BufferedInputStream.c_new (InputStream *base_stream) : Gio.InputStream Create a new Gio.BufferedInputStream Create a new Gio.BufferedInputStream Parameters: Gio.InputStream base_stream* Required (not null) a GInputStream Returns: Gio.InputStream a GInputStream for the given base_stream.
	new Gio.BufferedInputStream.sized (InputStream *base_stream, guint32 size) : Gio.InputStream Create a new Gio.BufferedInputStream Create a new Gio.BufferedInputStream Parameters: Gio.InputStream base_stream* Required (not null) a GInputStream guint32 size Required (not null) a gsize Returns: Gio.InputStream a GInputStream.
	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_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
	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) : gint32 Tries to read a single byte from the stream or the buffer. Tries to read a single byte from the stream or the buffer. Will block during this read. On success, the byte read from the stream is returned. On end of stream -1 is returned but it's not an exceptional error and error* is not set. 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: Gio.Cancellable cancellable optional GCancellable object, NULL to ignore Returns: gint32 the byte read from the stream, or -1 on end of stream or error.	Gio.BufferedInputStream
	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
	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_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_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

Events
None