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/**************************************************************************
*
* Copyright 2008-2010 VMware, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/**
* @file
* Malloc string stream implementation.
*/
#include "pipe/p_config.h"
#include "os_memory.h"
#include "os_stream.h"
struct os_str_stream
{
struct os_stream base;
char *str;
size_t size;
size_t written;
};
static INLINE struct os_str_stream *
os_str_stream(struct os_stream *stream)
{
return (struct os_str_stream *)stream;
}
static void
os_str_stream_close(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
os_free(stream->str);
os_free(stream);
}
static boolean
os_str_stream_write(struct os_stream *_stream, const void *data, size_t size)
{
struct os_str_stream *stream = os_str_stream(_stream);
size_t minimum_size;
boolean ret = TRUE;
minimum_size = stream->written + size + 1;
if (stream->size < minimum_size) {
size_t new_size = stream->size;
char * new_str;
do {
new_size *= 2;
} while (new_size < minimum_size);
new_str = os_realloc(stream->str, stream->size, new_size);
if (new_str) {
stream->str = new_str;
stream->size = new_size;
}
else {
size = stream->size - stream->written - 1;
ret = FALSE;
}
}
memcpy(stream->str + stream->written, data, size);
stream->written += size;
return ret;
}
static void
os_str_stream_flush(struct os_stream *stream)
{
(void)stream;
}
struct os_stream *
os_str_stream_create(size_t size)
{
struct os_str_stream *stream;
stream = (struct os_str_stream *)os_calloc(1, sizeof(*stream));
if(!stream)
goto no_stream;
stream->base.close = &os_str_stream_close;
stream->base.write = &os_str_stream_write;
stream->base.flush = &os_str_stream_flush;
stream->str = os_malloc(size);
if(!stream->str)
goto no_str;
stream->size = size;
return &stream->base;
no_str:
os_free(stream);
no_stream:
return NULL;
}
const char *
os_str_stream_get(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
if (!stream)
return NULL;
stream->str[stream->written] = 0;
return stream->str;
}
char *
os_str_stream_get_and_close(struct os_stream *_stream)
{
struct os_str_stream *stream = os_str_stream(_stream);
char *str;
if (!stream)
return NULL;
str = stream->str;
str[stream->written] = 0;
os_free(stream);
return str;
}
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