mirror of
https://github.com/love2d/love.git
synced 2026-08-12 08:30:56 +02:00
Alex Szpakowski
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
/**
|
|
* Copyright (c) 2006-2022 LOVE Development Team
|
|
*
|
|
* This software is provided 'as-is', without any express or implied
|
|
* warranty. In no event will the authors be held liable for any damages
|
|
* arising from the use of this software.
|
|
*
|
|
* Permission is granted to anyone to use this software for any purpose,
|
|
* including commercial applications, and to alter it and redistribute it
|
|
* freely, subject to the following restrictions:
|
|
*
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
|
* claim that you wrote the original software. If you use this software
|
|
* in a product, an acknowledgment in the product documentation would be
|
|
* appreciated but is not required.
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
|
* misrepresented as being the original software.
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
|
**/
|
|
|
|
// LOVE
|
|
#include "Stream.h"
|
|
#include "Data.h"
|
|
#include "data/ByteData.h"
|
|
#include "Exception.h"
|
|
|
|
namespace love
|
|
{
|
|
|
|
love::Type Stream::type("Stream", &Object::type);
|
|
|
|
Data *Stream::read(int64 size)
|
|
{
|
|
int64 max = LOVE_INT64_MAX;
|
|
int64 cur = 0;
|
|
|
|
if (isSeekable())
|
|
{
|
|
max = getSize();
|
|
cur = tell();
|
|
}
|
|
|
|
if (cur < 0)
|
|
cur = 0;
|
|
else if (cur > max)
|
|
cur = max;
|
|
|
|
if (cur + size > max)
|
|
size = max - cur;
|
|
|
|
StrongRef<data::ByteData> dst(new data::ByteData(size, false), Acquire::NORETAIN);
|
|
|
|
int64 bytesRead = read(dst->getData(), size);
|
|
|
|
if (bytesRead < 0 || (bytesRead == 0 && bytesRead != size))
|
|
throw love::Exception("Could not read from stream.");
|
|
|
|
if (bytesRead < size)
|
|
dst.set(new data::ByteData(dst->getData(), (size_t) bytesRead), Acquire::NORETAIN);
|
|
|
|
dst->retain();
|
|
return dst;
|
|
}
|
|
|
|
bool Stream::write(Data *src)
|
|
{
|
|
return write(src, 0, src->getSize());
|
|
}
|
|
|
|
bool Stream::write(Data *src, int64 offset, int64 size)
|
|
{
|
|
if (offset < 0 || size < 0 || offset + size > src->getSize())
|
|
throw love::Exception("Offset and size parameters do not fit within the given Data's size.");
|
|
|
|
return write((const uint8 *) src->getData() + offset, size);
|
|
}
|
|
|
|
} // love
|