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/*
* camel-null-output-stream.c
*
* 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.
*
* 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, see <http://www.gnu.org/licenses/>.
*
*/
/**
* SECTION: camel-null-output-stream
* @short_description: Null output stream
* @include: camel/camel.h
* @see_also: #GOutputStream
*
* #CamelNullOutputStream is analogous to writing to /dev/null, except it
* counts the total number of bytes written to it. This is primarily useful
* for determining the final size of some outgoing data, especially if using
* filters on the output stream.
**/
#include "camel-null-output-stream.h"
#define CAMEL_NULL_OUTPUT_STREAM_GET_PRIVATE(obj) \
(G_TYPE_INSTANCE_GET_PRIVATE \
((obj), CAMEL_TYPE_NULL_OUTPUT_STREAM, CamelNullOutputStreamPrivate))
struct _CamelNullOutputStreamPrivate {
gsize bytes_written;
};
G_DEFINE_TYPE (
CamelNullOutputStream,
camel_null_output_stream,
G_TYPE_OUTPUT_STREAM)
static gssize
null_output_stream_write (GOutputStream *stream,
gconstpointer buffer,
gsize count,
GCancellable *cancellable,
GError **error)
{
CamelNullOutputStreamPrivate *priv;
priv = CAMEL_NULL_OUTPUT_STREAM_GET_PRIVATE (stream);
priv->bytes_written += count;
return count;
}
static void
camel_null_output_stream_class_init (CamelNullOutputStreamClass *class)
{
GOutputStreamClass *stream_class;
g_type_class_add_private (
class, sizeof (CamelNullOutputStreamPrivate));
stream_class = G_OUTPUT_STREAM_CLASS (class);
stream_class->write_fn = null_output_stream_write;
}
static void
camel_null_output_stream_init (CamelNullOutputStream *null_stream)
{
null_stream->priv = CAMEL_NULL_OUTPUT_STREAM_GET_PRIVATE (null_stream);
}
/**
* camel_null_output_stream_new:
*
* Creates a new "null" output stream.
*
* Returns: a new #GOutputStream
*
* Since: 3.12
**/
GOutputStream *
camel_null_output_stream_new (void)
{
return g_object_new (CAMEL_TYPE_NULL_OUTPUT_STREAM, NULL);
}
/**
* camel_null_output_stream_get_bytes_written:
* @null_stream: a #CamelNullOutputStream
*
* Gets the total number of bytes written to @null_stream.
*
* Returns: total byte count
*
* Since: 3.12
**/
gsize
camel_null_output_stream_get_bytes_written (CamelNullOutputStream *null_stream)
{
g_return_val_if_fail (CAMEL_IS_NULL_OUTPUT_STREAM (null_stream), 0);
return null_stream->priv->bytes_written;
}
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