gio/giostream.h

   1 /* GIO - GLib Input, Output and Streaming Library
   2  *
   3  * Copyright © 2008, 2009 Codethink Limited
   4  * Copyright © 2009 Red Hat, Inc.
   5  *
   6  * This program is free software: you can redistribute it and/or modify
   7  * it under the terms of the GNU Lesser General Public License as published
   8  * by the Free Software Foundation; either version 2 of the licence or (at
   9  * your option) any later version.
  10  *
  11  * See the included COPYING file for more information.
  12  *
  13  * Authors: Ryan Lortie <desrt@desrt.ca>
  14  *          Alexander Larsson <alexl@redhat.com>
  15  */
  16
  17 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
  18 #error "Only <gio/gio.h> can be included directly."
  19 #endif
  20
  21 #ifndef __G_IO_STREAM_H__
  22 #define __G_IO_STREAM_H__
  23
  24 #include <gio/ginputstream.h>
  25 #include <gio/goutputstream.h>
  26 #include <gio/gcancellable.h>
  27 #include <gio/gioerror.h>
  28
  29 G_BEGIN_DECLS
  30
  31 #define G_TYPE_IO_STREAM         (g_io_stream_get_type ())
  32 #define G_IO_STREAM(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_IO_STREAM, GIOStream))
  33 #define G_IO_STREAM_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_IO_STREAM, GIOStreamClass))
  34 #define G_IS_IO_STREAM(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_IO_STREAM))
  35 #define G_IS_IO_STREAM_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_IO_STREAM))
  36 #define G_IO_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_IO_STREAM, GIOStreamClass))
  37
  38 typedef struct _GIOStreamPrivate                            GIOStreamPrivate;
  39 typedef struct _GIOStreamClass                              GIOStreamClass;
  40
  41 /**
  42  * GIOStream:
  43  *
  44  * Base class for read-write streams.
  45  **/
  46 struct _GIOStream
  47 {
  48   GObject parent_instance;
  49
  50   /*< private >*/
  51   GIOStreamPrivate *priv;
  52 };
  53
  54 struct _GIOStreamClass
  55 {
  56   GObjectClass parent_class;
  57
  58   GInputStream *  (*get_input_stream)  (GIOStream *stream);
  59   GOutputStream * (*get_output_stream) (GIOStream *stream);
  60
  61   gboolean (* close_fn)     (GIOStream           *stream,
  62                              GCancellable        *cancellable,
  63                              GError             **error);
  64   void     (* close_async)  (GIOStream           *stream,
  65                              int                  io_priority,
  66                              GCancellable        *cancellable,
  67                              GAsyncReadyCallback  callback,
  68                              gpointer             user_data);
  69   gboolean (* close_finish) (GIOStream           *stream,
  70                              GAsyncResult        *result,
  71                              GError             **error);
  72   /*< private >*/
  73   /* Padding for future expansion */
  74   void (*_g_reserved1) (void);
  75   void (*_g_reserved2) (void);
  76   void (*_g_reserved3) (void);
  77   void (*_g_reserved4) (void);
  78   void (*_g_reserved5) (void);
  79   void (*_g_reserved6) (void);
  80   void (*_g_reserved7) (void);
  81   void (*_g_reserved8) (void);
  82   void (*_g_reserved9) (void);
  83   void (*_g_reserved10) (void);
  84 };
  85
  86 GType          g_io_stream_get_type          (void)  G_GNUC_CONST;
  87
  88 GInputStream * g_io_stream_get_input_stream  (GIOStream            *stream);
  89 GOutputStream *g_io_stream_get_output_stream (GIOStream            *stream);
  90
  91 void           g_io_stream_splice_async      (GIOStream            *stream1,
  92                                               GIOStream            *stream2,
  93                                               GIOStreamSpliceFlags  flags,
  94                                               int                   io_priority,
  95                                               GCancellable         *cancellable,
  96                                               GAsyncReadyCallback   callback,
  97                                               gpointer              user_data);
  98
  99 gboolean       g_io_stream_splice_finish     (GAsyncResult         *result,
 100                                               GError              **error);
 101
 102 gboolean       g_io_stream_close             (GIOStream            *stream,
 103                                               GCancellable         *cancellable,
 104                                               GError              **error);
 105
 106 void           g_io_stream_close_async       (GIOStream            *stream,
 107                                               int                   io_priority,
 108                                               GCancellable         *cancellable,
 109                                               GAsyncReadyCallback   callback,
 110                                               gpointer              user_data);
 111 gboolean       g_io_stream_close_finish      (GIOStream            *stream,
 112                                               GAsyncResult         *result,
 113                                               GError              **error);
 114
 115 gboolean       g_io_stream_is_closed         (GIOStream            *stream);
 116 gboolean       g_io_stream_has_pending       (GIOStream            *stream);
 117 gboolean       g_io_stream_set_pending       (GIOStream            *stream,
 118                                               GError              **error);
 119 void           g_io_stream_clear_pending     (GIOStream            *stream);
 120
 121 G_END_DECLS
 122
 123 #endif /* __G_IO_STREAM_H__ */