gio/glocalfileiostream.c

   1 /* GIO - GLib Input, IO and Streaming Library
   2  *
   3  * Copyright (C) 2006-2007 Red Hat, Inc.
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General
  16  * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * Author: Alexander Larsson <alexl@redhat.com>
  19  */
  20
  21 #include "config.h"
  22
  23 #include <glib.h>
  24 #include <glib/gstdio.h>
  25 #include "glibintl.h"
  26 #include "gioerror.h"
  27 #include "gcancellable.h"
  28 #include "glocalfileiostream.h"
  29 #include "glocalfileinputstream.h"
  30 #include "glocalfileinfo.h"
  31
  32 #ifdef G_OS_UNIX
  33 #include "gfiledescriptorbased.h"
  34 #endif
  35
  36
  37 #define g_local_file_io_stream_get_type _g_local_file_io_stream_get_type
  38 G_DEFINE_TYPE (GLocalFileIOStream, g_local_file_io_stream, G_TYPE_FILE_IO_STREAM)
  39
  40 static void
  41 g_local_file_io_stream_finalize (GObject *object)
  42 {
  43   GLocalFileIOStream *file;
  44
  45   file = G_LOCAL_FILE_IO_STREAM (object);
  46
  47   g_object_unref (file->input_stream);
  48   g_object_unref (file->output_stream);
  49
  50   G_OBJECT_CLASS (g_local_file_io_stream_parent_class)->finalize (object);
  51 }
  52
  53 GFileIOStream *
  54 _g_local_file_io_stream_new (GLocalFileOutputStream *output_stream)
  55 {
  56   GLocalFileIOStream *stream;
  57   int fd;
  58
  59   stream = g_object_new (G_TYPE_LOCAL_FILE_IO_STREAM, NULL);
  60   stream->output_stream = g_object_ref (G_OUTPUT_STREAM (output_stream));
  61   _g_local_file_output_stream_set_do_close (output_stream, FALSE);
  62   fd = _g_local_file_output_stream_get_fd (output_stream);
  63   stream->input_stream = (GInputStream *)_g_local_file_input_stream_new (fd);
  64
  65   _g_local_file_input_stream_set_do_close (G_LOCAL_FILE_INPUT_STREAM (stream->input_stream),
  66                                            FALSE);
  67
  68   return G_FILE_IO_STREAM (stream);
  69 }
  70
  71 static GInputStream *
  72 g_local_file_io_stream_get_input_stream (GIOStream *stream)
  73 {
  74   return G_LOCAL_FILE_IO_STREAM (stream)->input_stream;
  75 }
  76
  77 static GOutputStream *
  78 g_local_file_io_stream_get_output_stream (GIOStream *stream)
  79 {
  80   return G_LOCAL_FILE_IO_STREAM (stream)->output_stream;
  81 }
  82
  83
  84 static gboolean
  85 g_local_file_io_stream_close (GIOStream  *stream,
  86                               GCancellable   *cancellable,
  87                               GError        **error)
  88 {
  89   GLocalFileIOStream *file = G_LOCAL_FILE_IO_STREAM (stream);
  90
  91   /* There are shortcutted and can't fail */
  92   g_output_stream_close (file->output_stream, cancellable, NULL);
  93   g_input_stream_close (file->input_stream, cancellable, NULL);
  94
  95   return
  96     _g_local_file_output_stream_really_close (G_LOCAL_FILE_OUTPUT_STREAM (file->output_stream),
  97                                               cancellable, error);
  98 }
  99
 100 static void
 101 g_local_file_io_stream_class_init (GLocalFileIOStreamClass *klass)
 102 {
 103   GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
 104   GIOStreamClass *stream_class = G_IO_STREAM_CLASS (klass);
 105
 106   gobject_class->finalize = g_local_file_io_stream_finalize;
 107
 108   stream_class->get_input_stream = g_local_file_io_stream_get_input_stream;
 109   stream_class->get_output_stream = g_local_file_io_stream_get_output_stream;
 110   stream_class->close_fn = g_local_file_io_stream_close;
 111 }
 112
 113 static void
 114 g_local_file_io_stream_init (GLocalFileIOStream *stream)
 115 {
 116 }