101 lines
2.0 KiB
C
101 lines
2.0 KiB
C
/*
|
|
* WinPR: Windows Portable Runtime
|
|
* Stream Utils
|
|
*
|
|
* Copyright 2011 Vic Lee
|
|
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#include <winpr/crt.h>
|
|
#include <winpr/stream.h>
|
|
|
|
void Stream_EnsureCapacity(wStream* s, size_t size)
|
|
{
|
|
if (s->capacity < size)
|
|
{
|
|
size_t position;
|
|
size_t old_capacity;
|
|
size_t new_capacity;
|
|
|
|
old_capacity = s->capacity;
|
|
new_capacity = old_capacity;
|
|
|
|
do
|
|
{
|
|
new_capacity *= 2;
|
|
}
|
|
while (new_capacity < size);
|
|
|
|
s->capacity = new_capacity;
|
|
s->length = new_capacity;
|
|
|
|
position = Stream_GetPosition(s);
|
|
|
|
s->buffer = (BYTE*) realloc(s->buffer, s->capacity);
|
|
|
|
ZeroMemory(&s->buffer[old_capacity], s->capacity - old_capacity);
|
|
|
|
Stream_SetPosition(s, position);
|
|
}
|
|
}
|
|
|
|
void Stream_EnsureRemainingCapacity(wStream* s, size_t size)
|
|
{
|
|
if (Stream_GetPosition(s) + size > Stream_Capacity(s))
|
|
Stream_EnsureCapacity(s, Stream_Capacity(s) + size);
|
|
}
|
|
|
|
wStream* Stream_New(BYTE* buffer, size_t size)
|
|
{
|
|
wStream* s;
|
|
|
|
s = malloc(sizeof(wStream));
|
|
|
|
if (s != NULL)
|
|
{
|
|
if (buffer)
|
|
s->buffer = buffer;
|
|
else
|
|
s->buffer = (BYTE*) malloc(size);
|
|
|
|
s->pointer = s->buffer;
|
|
s->capacity = size;
|
|
s->length = size;
|
|
|
|
s->pool = NULL;
|
|
s->count = 0;
|
|
}
|
|
|
|
return s;
|
|
}
|
|
|
|
void Stream_Free(wStream* s, BOOL bFreeBuffer)
|
|
{
|
|
if (s != NULL)
|
|
{
|
|
if (bFreeBuffer)
|
|
{
|
|
if (s->buffer != NULL)
|
|
free(s->buffer);
|
|
}
|
|
|
|
free(s);
|
|
}
|
|
}
|