|
Packit |
ae235b |
/* GIO - GLib Input, Output and Streaming Library
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Copyright (C) 2006-2007 Red Hat, Inc.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* This library is free software; you can redistribute it and/or
|
|
Packit |
ae235b |
* modify it under the terms of the GNU Lesser General Public
|
|
Packit |
ae235b |
* License as published by the Free Software Foundation; either
|
|
Packit |
ae235b |
* version 2.1 of the License, or (at your option) any later version.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* This library is distributed in the hope that it will be useful,
|
|
Packit |
ae235b |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit |
ae235b |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Packit |
ae235b |
* Lesser General Public License for more details.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* You should have received a copy of the GNU Lesser General
|
|
Packit |
ae235b |
* Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Author: Christian Kellner <gicmo@gnome.org>
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
#include "config.h"
|
|
Packit |
ae235b |
#include "gmemoryinputstream.h"
|
|
Packit |
ae235b |
#include "gpollableinputstream.h"
|
|
Packit |
ae235b |
#include "ginputstream.h"
|
|
Packit |
ae235b |
#include "gseekable.h"
|
|
Packit |
ae235b |
#include "string.h"
|
|
Packit |
ae235b |
#include "gtask.h"
|
|
Packit |
ae235b |
#include "gioerror.h"
|
|
Packit |
ae235b |
#include "glibintl.h"
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* SECTION:gmemoryinputstream
|
|
Packit |
ae235b |
* @short_description: Streaming input operations on memory chunks
|
|
Packit |
ae235b |
* @include: gio/gio.h
|
|
Packit |
ae235b |
* @see_also: #GMemoryOutputStream
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* #GMemoryInputStream is a class for using arbitrary
|
|
Packit |
ae235b |
* memory chunks as input for GIO streaming input operations.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* As of GLib 2.34, #GMemoryInputStream implements
|
|
Packit |
ae235b |
* #GPollableInputStream.
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
struct _GMemoryInputStreamPrivate {
|
|
Packit |
ae235b |
GSList *chunks;
|
|
Packit |
ae235b |
gsize len;
|
|
Packit |
ae235b |
gsize pos;
|
|
Packit |
ae235b |
};
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gssize g_memory_input_stream_read (GInputStream *stream,
|
|
Packit |
ae235b |
void *buffer,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
static gssize g_memory_input_stream_skip (GInputStream *stream,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_close (GInputStream *stream,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
static void g_memory_input_stream_skip_async (GInputStream *stream,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
int io_priority,
|
|
Packit |
ae235b |
GCancellable *cancellabl,
|
|
Packit |
ae235b |
GAsyncReadyCallback callback,
|
|
Packit |
ae235b |
gpointer datae);
|
|
Packit |
ae235b |
static gssize g_memory_input_stream_skip_finish (GInputStream *stream,
|
|
Packit |
ae235b |
GAsyncResult *result,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
static void g_memory_input_stream_close_async (GInputStream *stream,
|
|
Packit |
ae235b |
int io_priority,
|
|
Packit |
ae235b |
GCancellable *cancellabl,
|
|
Packit |
ae235b |
GAsyncReadyCallback callback,
|
|
Packit |
ae235b |
gpointer data);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_close_finish (GInputStream *stream,
|
|
Packit |
ae235b |
GAsyncResult *result,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void g_memory_input_stream_seekable_iface_init (GSeekableIface *iface);
|
|
Packit |
ae235b |
static goffset g_memory_input_stream_tell (GSeekable *seekable);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_can_seek (GSeekable *seekable);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_seek (GSeekable *seekable,
|
|
Packit |
ae235b |
goffset offset,
|
|
Packit |
ae235b |
GSeekType type,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_can_truncate (GSeekable *seekable);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_truncate (GSeekable *seekable,
|
|
Packit |
ae235b |
goffset offset,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void g_memory_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface);
|
|
Packit |
ae235b |
static gboolean g_memory_input_stream_is_readable (GPollableInputStream *stream);
|
|
Packit |
ae235b |
static GSource *g_memory_input_stream_create_source (GPollableInputStream *stream,
|
|
Packit |
ae235b |
GCancellable *cancellable);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void g_memory_input_stream_finalize (GObject *object);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
G_DEFINE_TYPE_WITH_CODE (GMemoryInputStream, g_memory_input_stream, G_TYPE_INPUT_STREAM,
|
|
Packit |
ae235b |
G_ADD_PRIVATE (GMemoryInputStream)
|
|
Packit |
ae235b |
G_IMPLEMENT_INTERFACE (G_TYPE_SEEKABLE,
|
|
Packit |
ae235b |
g_memory_input_stream_seekable_iface_init);
|
|
Packit |
ae235b |
G_IMPLEMENT_INTERFACE (G_TYPE_POLLABLE_INPUT_STREAM,
|
|
Packit |
ae235b |
g_memory_input_stream_pollable_iface_init);
|
|
Packit |
ae235b |
)
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_class_init (GMemoryInputStreamClass *klass)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GObjectClass *object_class;
|
|
Packit |
ae235b |
GInputStreamClass *istream_class;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
object_class = G_OBJECT_CLASS (klass);
|
|
Packit |
ae235b |
object_class->finalize = g_memory_input_stream_finalize;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
istream_class = G_INPUT_STREAM_CLASS (klass);
|
|
Packit |
ae235b |
istream_class->read_fn = g_memory_input_stream_read;
|
|
Packit |
ae235b |
istream_class->skip = g_memory_input_stream_skip;
|
|
Packit |
ae235b |
istream_class->close_fn = g_memory_input_stream_close;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
istream_class->skip_async = g_memory_input_stream_skip_async;
|
|
Packit |
ae235b |
istream_class->skip_finish = g_memory_input_stream_skip_finish;
|
|
Packit |
ae235b |
istream_class->close_async = g_memory_input_stream_close_async;
|
|
Packit |
ae235b |
istream_class->close_finish = g_memory_input_stream_close_finish;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_finalize (GObject *object)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStream *stream;
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
stream = G_MEMORY_INPUT_STREAM (object);
|
|
Packit |
ae235b |
priv = stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_slist_free_full (priv->chunks, (GDestroyNotify)g_bytes_unref);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
G_OBJECT_CLASS (g_memory_input_stream_parent_class)->finalize (object);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_seekable_iface_init (GSeekableIface *iface)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
iface->tell = g_memory_input_stream_tell;
|
|
Packit |
ae235b |
iface->can_seek = g_memory_input_stream_can_seek;
|
|
Packit |
ae235b |
iface->seek = g_memory_input_stream_seek;
|
|
Packit |
ae235b |
iface->can_truncate = g_memory_input_stream_can_truncate;
|
|
Packit |
ae235b |
iface->truncate_fn = g_memory_input_stream_truncate;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_pollable_iface_init (GPollableInputStreamInterface *iface)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
iface->is_readable = g_memory_input_stream_is_readable;
|
|
Packit |
ae235b |
iface->create_source = g_memory_input_stream_create_source;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_init (GMemoryInputStream *stream)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
stream->priv = g_memory_input_stream_get_instance_private (stream);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* g_memory_input_stream_new:
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Creates a new empty #GMemoryInputStream.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Returns: a new #GInputStream
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
GInputStream *
|
|
Packit |
ae235b |
g_memory_input_stream_new (void)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GInputStream *stream;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
stream = g_object_new (G_TYPE_MEMORY_INPUT_STREAM, NULL);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return stream;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* g_memory_input_stream_new_from_data:
|
|
Packit |
ae235b |
* @data: (array length=len) (element-type guint8) (transfer full): input data
|
|
Packit |
ae235b |
* @len: length of the data, may be -1 if @data is a nul-terminated string
|
|
Packit |
ae235b |
* @destroy: (nullable): function that is called to free @data, or %NULL
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Creates a new #GMemoryInputStream with data in memory of a given size.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Returns: new #GInputStream read from @data of @len bytes.
|
|
Packit |
ae235b |
**/
|
|
Packit |
ae235b |
GInputStream *
|
|
Packit |
ae235b |
g_memory_input_stream_new_from_data (const void *data,
|
|
Packit |
ae235b |
gssize len,
|
|
Packit |
ae235b |
GDestroyNotify destroy)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GInputStream *stream;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
stream = g_memory_input_stream_new ();
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_memory_input_stream_add_data (G_MEMORY_INPUT_STREAM (stream),
|
|
Packit |
ae235b |
data, len, destroy);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return stream;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* g_memory_input_stream_new_from_bytes:
|
|
Packit |
ae235b |
* @bytes: a #GBytes
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Creates a new #GMemoryInputStream with data from the given @bytes.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Returns: new #GInputStream read from @bytes
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Since: 2.34
|
|
Packit |
ae235b |
**/
|
|
Packit |
ae235b |
GInputStream *
|
|
Packit |
ae235b |
g_memory_input_stream_new_from_bytes (GBytes *bytes)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
GInputStream *stream;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
stream = g_memory_input_stream_new ();
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_memory_input_stream_add_bytes (G_MEMORY_INPUT_STREAM (stream),
|
|
Packit |
ae235b |
bytes);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return stream;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* g_memory_input_stream_add_data:
|
|
Packit |
ae235b |
* @stream: a #GMemoryInputStream
|
|
Packit |
ae235b |
* @data: (array length=len) (element-type guint8) (transfer full): input data
|
|
Packit |
ae235b |
* @len: length of the data, may be -1 if @data is a nul-terminated string
|
|
Packit |
ae235b |
* @destroy: (nullable): function that is called to free @data, or %NULL
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Appends @data to data that can be read from the input stream
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
void
|
|
Packit |
ae235b |
g_memory_input_stream_add_data (GMemoryInputStream *stream,
|
|
Packit |
ae235b |
const void *data,
|
|
Packit |
ae235b |
gssize len,
|
|
Packit |
ae235b |
GDestroyNotify destroy)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GBytes *bytes;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
if (len == -1)
|
|
Packit |
ae235b |
len = strlen (data);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/* It's safe to discard the const here because we're chaining the
|
|
Packit |
ae235b |
* destroy callback.
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
bytes = g_bytes_new_with_free_func (data, len, destroy, (void*)data);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_memory_input_stream_add_bytes (stream, bytes);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_bytes_unref (bytes);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
/**
|
|
Packit |
ae235b |
* g_memory_input_stream_add_bytes:
|
|
Packit |
ae235b |
* @stream: a #GMemoryInputStream
|
|
Packit |
ae235b |
* @bytes: input data
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Appends @bytes to data that can be read from the input stream.
|
|
Packit |
ae235b |
*
|
|
Packit |
ae235b |
* Since: 2.34
|
|
Packit |
ae235b |
*/
|
|
Packit |
ae235b |
void
|
|
Packit |
ae235b |
g_memory_input_stream_add_bytes (GMemoryInputStream *stream,
|
|
Packit |
ae235b |
GBytes *bytes)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
g_return_if_fail (G_IS_MEMORY_INPUT_STREAM (stream));
|
|
Packit |
ae235b |
g_return_if_fail (bytes != NULL);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
priv = stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
priv->chunks = g_slist_append (priv->chunks, g_bytes_ref (bytes));
|
|
Packit |
ae235b |
priv->len += g_bytes_get_size (bytes);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gssize
|
|
Packit |
ae235b |
g_memory_input_stream_read (GInputStream *stream,
|
|
Packit |
ae235b |
void *buffer,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStream *memory_stream;
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
GSList *l;
|
|
Packit |
ae235b |
GBytes *chunk;
|
|
Packit |
ae235b |
gsize len;
|
|
Packit |
ae235b |
gsize offset, start, rest, size;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
memory_stream = G_MEMORY_INPUT_STREAM (stream);
|
|
Packit |
ae235b |
priv = memory_stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
count = MIN (count, priv->len - priv->pos);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
offset = 0;
|
|
Packit |
ae235b |
for (l = priv->chunks; l; l = l->next)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
chunk = (GBytes *)l->data;
|
|
Packit |
ae235b |
len = g_bytes_get_size (chunk);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
if (offset + len > priv->pos)
|
|
Packit |
ae235b |
break;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
offset += len;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
start = priv->pos - offset;
|
|
Packit |
ae235b |
rest = count;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
for (; l && rest > 0; l = l->next)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
const guint8* chunk_data;
|
|
Packit |
ae235b |
chunk = (GBytes *)l->data;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
chunk_data = g_bytes_get_data (chunk, &len;;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
size = MIN (rest, len - start);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
memcpy ((guint8 *)buffer + (count - rest), chunk_data + start, size);
|
|
Packit |
ae235b |
rest -= size;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
start = 0;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
priv->pos += count;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return count;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gssize
|
|
Packit |
ae235b |
g_memory_input_stream_skip (GInputStream *stream,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStream *memory_stream;
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
memory_stream = G_MEMORY_INPUT_STREAM (stream);
|
|
Packit |
ae235b |
priv = memory_stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
count = MIN (count, priv->len - priv->pos);
|
|
Packit |
ae235b |
priv->pos += count;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return count;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_close (GInputStream *stream,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
return TRUE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_skip_async (GInputStream *stream,
|
|
Packit |
ae235b |
gsize count,
|
|
Packit |
ae235b |
int io_priority,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GAsyncReadyCallback callback,
|
|
Packit |
ae235b |
gpointer user_data)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GTask *task;
|
|
Packit |
ae235b |
gssize nskipped;
|
|
Packit |
ae235b |
GError *error = NULL;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
nskipped = G_INPUT_STREAM_GET_CLASS (stream)->skip (stream, count, cancellable, &error);
|
|
Packit |
ae235b |
task = g_task_new (stream, cancellable, callback, user_data);
|
|
Packit |
ae235b |
g_task_set_source_tag (task, g_memory_input_stream_skip_async);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
if (error)
|
|
Packit |
ae235b |
g_task_return_error (task, error);
|
|
Packit |
ae235b |
else
|
|
Packit |
ae235b |
g_task_return_int (task, nskipped);
|
|
Packit |
ae235b |
g_object_unref (task);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gssize
|
|
Packit |
ae235b |
g_memory_input_stream_skip_finish (GInputStream *stream,
|
|
Packit |
ae235b |
GAsyncResult *result,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
g_return_val_if_fail (g_task_is_valid (result, stream), -1);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return g_task_propagate_int (G_TASK (result), error);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static void
|
|
Packit |
ae235b |
g_memory_input_stream_close_async (GInputStream *stream,
|
|
Packit |
ae235b |
int io_priority,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GAsyncReadyCallback callback,
|
|
Packit |
ae235b |
gpointer user_data)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GTask *task;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
task = g_task_new (stream, cancellable, callback, user_data);
|
|
Packit |
ae235b |
g_task_set_source_tag (task, g_memory_input_stream_close_async);
|
|
Packit |
ae235b |
g_task_return_boolean (task, TRUE);
|
|
Packit |
ae235b |
g_object_unref (task);
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_close_finish (GInputStream *stream,
|
|
Packit |
ae235b |
GAsyncResult *result,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
return TRUE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static goffset
|
|
Packit |
ae235b |
g_memory_input_stream_tell (GSeekable *seekable)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStream *memory_stream;
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
memory_stream = G_MEMORY_INPUT_STREAM (seekable);
|
|
Packit |
ae235b |
priv = memory_stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return priv->pos;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static
|
|
Packit |
ae235b |
gboolean g_memory_input_stream_can_seek (GSeekable *seekable)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
return TRUE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_seek (GSeekable *seekable,
|
|
Packit |
ae235b |
goffset offset,
|
|
Packit |
ae235b |
GSeekType type,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GMemoryInputStream *memory_stream;
|
|
Packit |
ae235b |
GMemoryInputStreamPrivate *priv;
|
|
Packit |
ae235b |
goffset absolute;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
memory_stream = G_MEMORY_INPUT_STREAM (seekable);
|
|
Packit |
ae235b |
priv = memory_stream->priv;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
switch (type)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
case G_SEEK_CUR:
|
|
Packit |
ae235b |
absolute = priv->pos + offset;
|
|
Packit |
ae235b |
break;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
case G_SEEK_SET:
|
|
Packit |
ae235b |
absolute = offset;
|
|
Packit |
ae235b |
break;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
case G_SEEK_END:
|
|
Packit |
ae235b |
absolute = priv->len + offset;
|
|
Packit |
ae235b |
break;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
default:
|
|
Packit |
ae235b |
g_set_error_literal (error,
|
|
Packit |
ae235b |
G_IO_ERROR,
|
|
Packit |
ae235b |
G_IO_ERROR_INVALID_ARGUMENT,
|
|
Packit |
ae235b |
_("Invalid GSeekType supplied"));
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return FALSE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
if (absolute < 0 || absolute > priv->len)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
g_set_error_literal (error,
|
|
Packit |
ae235b |
G_IO_ERROR,
|
|
Packit |
ae235b |
G_IO_ERROR_INVALID_ARGUMENT,
|
|
Packit |
ae235b |
_("Invalid seek request"));
|
|
Packit |
ae235b |
return FALSE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
priv->pos = absolute;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return TRUE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_can_truncate (GSeekable *seekable)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
return FALSE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_truncate (GSeekable *seekable,
|
|
Packit |
ae235b |
goffset offset,
|
|
Packit |
ae235b |
GCancellable *cancellable,
|
|
Packit |
ae235b |
GError **error)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
g_set_error_literal (error,
|
|
Packit |
ae235b |
G_IO_ERROR,
|
|
Packit |
ae235b |
G_IO_ERROR_NOT_SUPPORTED,
|
|
Packit |
ae235b |
_("Cannot truncate GMemoryInputStream"));
|
|
Packit |
ae235b |
return FALSE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static gboolean
|
|
Packit |
ae235b |
g_memory_input_stream_is_readable (GPollableInputStream *stream)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
return TRUE;
|
|
Packit |
ae235b |
}
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
static GSource *
|
|
Packit |
ae235b |
g_memory_input_stream_create_source (GPollableInputStream *stream,
|
|
Packit |
ae235b |
GCancellable *cancellable)
|
|
Packit |
ae235b |
{
|
|
Packit |
ae235b |
GSource *base_source, *pollable_source;
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
base_source = g_timeout_source_new (0);
|
|
Packit |
ae235b |
pollable_source = g_pollable_source_new_full (stream, base_source,
|
|
Packit |
ae235b |
cancellable);
|
|
Packit |
ae235b |
g_source_unref (base_source);
|
|
Packit |
ae235b |
|
|
Packit |
ae235b |
return pollable_source;
|
|
Packit |
ae235b |
}
|