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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/* camel-stream-data-wrapper.c
*
* Copyright 1999, 2000 HelixCode (http://www.helixcode.com)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Ettore Perazzoli
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <gtk/gtk.h>
#include "camel-stream-data-wrapper.h"
static CamelDataWrapperClass *parent_class = NULL;
/* CamelDataWrapper methods. */
static void
write_to_stream (CamelDataWrapper *data_wrapper,
CamelStream *output_stream)
{
#define BUFFER_SIZE 4096
gchar buffer[BUFFER_SIZE];
CamelStreamDataWrapper *stream_data_wrapper;
CamelStream *input_stream;
stream_data_wrapper = CAMEL_STREAM_DATA_WRAPPER (data_wrapper);
input_stream = stream_data_wrapper->stream;
while (TRUE) {
gchar *p;
gint read, written;
read = camel_stream_read (input_stream, buffer, BUFFER_SIZE);
if (read == 0)
break;
p = buffer;
while (read > 0) {
written = camel_stream_write (output_stream, p, read);
/* FIXME no way to report an error?! */
if (written == -1)
break;
p += written;
read -= written;
}
}
#undef BUFFER_SIZE
}
static CamelStream *
get_stream (CamelDataWrapper *data_wrapper)
{
CamelStreamDataWrapper *stream_data_wrapper;
stream_data_wrapper = CAMEL_STREAM_DATA_WRAPPER (data_wrapper);
return stream_data_wrapper->stream;
}
/* GtkObject methods. */
static void
destroy (GtkObject *object)
{
CamelStreamDataWrapper *stream_data_wrapper;
GtkObject *stream_object;
stream_data_wrapper = CAMEL_STREAM_DATA_WRAPPER (object);
stream_object = GTK_OBJECT (object);
stream_data_wrapper->stream = NULL;
gtk_object_unref (stream_object);
}
/* This handles destruction of the associated CamelDataWrapper outside
CamelStreamDataWrapper, for debuggin purposes (this should never happen). */
static void
stream_destroy_cb (GtkObject *object,
gpointer data)
{
CamelStreamDataWrapper *wrapper;
wrapper = CAMEL_STREAM_DATA_WRAPPER (data);
/* Hack: when we destroy the stream ourselves, we set the `stream'
member to NULL first, so that we can recognize when this is done out
of our control. */
if (wrapper->stream != NULL) {
g_warning ("CamelSimpleDataWrapperStream: associated CamelSimpleDataWrapper was destroyed.");
wrapper->stream = NULL;
}
}
static void
class_init (CamelStreamDataWrapperClass *class)
{
GtkObjectClass *object_class;
CamelDataWrapperClass *data_wrapper_class;
object_class = GTK_OBJECT_CLASS (class);
object_class->destroy = destroy;
data_wrapper_class = CAMEL_DATA_WRAPPER_CLASS (class);
data_wrapper_class->write_to_stream = write_to_stream;
data_wrapper_class->get_stream = get_stream;
parent_class = gtk_type_class (camel_data_wrapper_get_type ());
}
static void
init (CamelStreamDataWrapper *wrapper)
{
wrapper->stream = NULL;
}
GtkType
camel_stream_data_wrapper_get_type (void)
{
static GtkType type = 0;
if (type == 0) {
static const GtkTypeInfo info = {
"CamelStreamDataWrapper",
sizeof (CamelStreamDataWrapper),
sizeof (CamelStreamDataWrapperClass),
(GtkClassInitFunc) class_init,
(GtkObjectInitFunc) init,
/* reserved_1 */ NULL,
/* reserved_2 */ NULL,
(GtkClassInitFunc) NULL,
};
type = gtk_type_unique (camel_data_wrapper_get_type (), &info);
}
return type;
}
/**
* camel_stream_data_wrapper_construct:
* @wrapper: A CamelStreamDataWrapper object
* @stream: A Camel stream object
*
* Construct @wrapper associating @stream to it. Notice that, after this call,
* @stream is conceptually owned by @wrapper and will be destroyed when
* @wrapper is destroyed.
**/
void
camel_stream_data_wrapper_construct (CamelStreamDataWrapper *wrapper,
CamelStream *stream)
{
g_return_if_fail (wrapper != NULL);
g_return_if_fail (CAMEL_IS_STREAM_DATA_WRAPPER (wrapper));
g_return_if_fail (stream != NULL);
g_return_if_fail (CAMEL_IS_STREAM (stream));
wrapper->stream = stream;
gtk_signal_connect (GTK_OBJECT (stream), "destroy",
GTK_SIGNAL_FUNC (stream_destroy_cb), wrapper);
}
/**
* camel_stream_data_wrapper_new:
* @stream: A Camel stream object
*
* Create a new stream data wrapper object for @stream. Notice that, after
* this call, @stream is conceptually owned by the new wrapper and will be
* destroyed when the wrapper is destroyed.
*
* Return value: A pointer to the new CamelStreamDataWrapper object.
**/
CamelDataWrapper *
camel_stream_data_wrapper_new (CamelStream *stream)
{
CamelDataWrapper *wrapper;
wrapper = gtk_type_new (camel_stream_data_wrapper_get_type ());
camel_stream_data_wrapper_construct
(CAMEL_STREAM_DATA_WRAPPER (wrapper), stream);
return wrapper;
}
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