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GFileInputStream provides input streams that take their content from a file.
GFileInputStream implements GSeekable, which allows the input
stream to jump to arbitrary positions in the file, provided the
filesystem of the file allows it. To find the position of a file
input stream, use g_seekable_tell(). To find out if a file input
stream supports seeking, use g_seekable_can_seek().
To position a file input stream, use g_seekable_seek().
GFileInfo * g_file_input_stream_query_info (GFileInputStream *stream,const char *attributes,GCancellable *cancellable,GError **error);
Queries a file input stream the given attributes
. This function blocks
while querying the stream. For the asynchronous (non-blocking) version
of this function, see g_file_input_stream_query_info_async(). While the
stream is blocked, the stream will set the pending flag internally, and
any other operations on the stream will fail with G_IO_ERROR_PENDING.
stream |
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attributes |
a file attribute query string. |
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cancellable |
optional GCancellable object, |
[nullable] |
error |
a GError location to store the error occurring, or |
void g_file_input_stream_query_info_async (GFileInputStream *stream,const char *attributes,int io_priority,GCancellable *cancellable,GAsyncReadyCallback callback,gpointer user_data);
Queries the stream information asynchronously.
When the operation is finished callback
will be called.
You can then call g_file_input_stream_query_info_finish()
to get the result of the operation.
For the synchronous version of this function,
see g_file_input_stream_query_info().
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 set
stream |
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attributes |
a file attribute query string. |
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io_priority |
the I/O priority of the request |
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cancellable |
optional GCancellable object, |
[nullable] |
callback |
callback to call when the request is satisfied. |
[scope async] |
user_data |
the data to pass to callback function. |
[closure] |
GFileInfo * g_file_input_stream_query_info_finish (GFileInputStream *stream,GAsyncResult *result,GError **error);
Finishes an asynchronous info query operation.
stream |
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result |
a GAsyncResult. |
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error |
a GError location to store the error occurring,
or |
typedef struct _GFileInputStream GFileInputStream;
A subclass of GInputStream for opened files. This adds a few file-specific operations and seeking.
GFileInputStream implements GSeekable.