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/* Copyright (C) 2007 The gtkmm Development Team
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <giomm/fileinfo.h>
#include <giomm/inputstream.h>
#include <giomm/seekable.h>
#include <glibmm/iochannel.h>
#include <glibmm/object.h>
_DEFS(giomm,gio)
_PINCLUDE(giomm/private/inputstream_p.h)
namespace Gio
{
/** FileInputStream provides input streams that take their content from a file.
*
* FileInputStream implements Seekable, which allows the input stream to jump to arbitrary positions in the file,
* provided the file system of the file allows it.
* Use the methods of the Seekable base class for seeking and positioning.
*
* @ingroup Streams
*
* @newin{2,16}
*/
class FileInputStream
: public Gio::InputStream,
public Seekable
{
_CLASS_GOBJECT(FileInputStream, GFileInputStream, G_FILE_INPUT_STREAM, Gio::InputStream, GInputStream)
_IMPLEMENTS_INTERFACE(Seekable)
public:
/** Queries a file input stream the given @a attributes. This function blocks
* while querying the stream. For the asynchronous (non-blocking) version
* of this function, see query_info_async(). While the
* stream is blocked, the stream will set the pending flag internally, and
* any other operations on the stream will throw a Gio::Error with PENDING.
*
* @param attributes A file attribute query string.
* @param cancellable A Cancellable object.
* @return A FileInfo, or an empty RefPtr on error.
*/
Glib::RefPtr<FileInfo> query_info(const Glib::RefPtr<Cancellable>& cancellable, const std::string& attributes = "*");
/** Queries a file input stream the given @a attributes. This function blocks
* while querying the stream. For the asynchronous (non-blocking) version
* of this function, see query_info_async(). While the
* stream is blocked, the stream will set the pending flag internally, and
* any other operations on the stream will throw a Gio::Error with PENDING.
*
* @param attributes A file attribute query string.
* @return A FileInfo, or an empty RefPtr on error.
*/
Glib::RefPtr<FileInfo> query_info(const std::string& attributes = "*");
_IGNORE(g_file_input_stream_query_info)
/** Queries the stream information asynchronously. For the synchronous version of this function, see query_info().
*
* The operation can be cancelled by triggering the cancellable object from another thread. If the operation was cancelled,
* a Gio::Error with CANCELLED will be thrown.
*
* When the operation is finished, @a slot will be called. You can then call query_info_finish() to get the result of the operation.
*
* @param slot A callback slot which will be called when the request is satisfied.
* @param cancellable A Cancellable object which can be used to cancel the operation.
* @param attributes A file attribute query string.
* @param io_priority The I/O priority of the request.
*/
void query_info_async(const SlotAsyncReady& slot, const Glib::RefPtr<Cancellable>& cancellable, const std::string& attributes = "*", int io_priority = Glib::PRIORITY_DEFAULT);
/** Queries the stream information asynchronously. For the synchronous version of this function, see query_info().
*
* When the operation is finished, @a slot will be called. You can then call query_info_finish() to get the result of the operation.
*
* @param slot A callback slot which will be called when the request is satisfied.
* @param attributes A file attribute query string.
* @param io_priority The I/O priority of the request.
*/
void query_info_async(const SlotAsyncReady& slot, const std::string& attributes = "*", int io_priority = Glib::PRIORITY_DEFAULT);
_IGNORE(g_file_input_stream_query_info_async)
_WRAP_METHOD(Glib::RefPtr<FileInfo> query_info_finish(const Glib::RefPtr<AsyncResult>& result),
g_file_input_stream_query_info_finish,
errthrow)
};
} // namespace Gio
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