/*
* Copyright (c) 2012, Jonathan Schleifer <js@webkeks.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <string.h>
#include "stream.h"
static bool
ctor(void *ptr, va_list args)
{
CFWStream *stream = ptr;
stream->ops = NULL;
return true;
}
static void
dtor(void *ptr)
{
cfw_stream_close(ptr);
}
ssize_t
cfw_stream_read(void *ptr, void *buf, size_t len)
{
CFWStream *stream = ptr;
ssize_t ret;
if (stream == NULL || stream->ops == NULL)
return -1;
if ((ret = stream->ops->read(stream, buf, len)) < -1)
ret = -1;
return ret;
}
bool
cfw_stream_write(void *ptr, const void *buf, size_t len)
{
CFWStream *stream = ptr;
if (stream == NULL || stream->ops == NULL)
return false;
return stream->ops->write(stream, buf, len);
}
bool
cfw_stream_write_string(void *ptr, const char *str)
{
return cfw_stream_write(ptr, str, strlen(str));
}
bool
cfw_stream_eof(void *ptr)
{
CFWStream *stream = ptr;
if (stream == NULL || stream->ops == NULL)
return true;
return stream->ops->eof(stream);
}
void
cfw_stream_close(void *ptr)
{
CFWStream *stream = ptr;
if (stream == NULL || stream->ops == NULL)
return;
stream->ops->close(stream);
}
static CFWClass class = {
.name = "CFWStream",
.size = sizeof(CFWStream),
.ctor = ctor,
.dtor = dtor
};
CFWClass *cfw_stream = &class;