mirror of
https://github.com/love2d/love.git
synced 2026-08-12 16:40:57 +02:00
Sasha Szpakowski
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/**
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* Copyright (c) 2006-2023 LOVE Development Team
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*
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* This software is provided 'as-is', without any express or implied
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* warranty. In no event will the authors be held liable for any damages
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* arising from the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software
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* in a product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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**/
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// LOVE
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#include "Stream.h"
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#include "Data.h"
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#include "data/ByteData.h"
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#include "Exception.h"
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namespace love
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{
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love::Type Stream::type("Stream", &Object::type);
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Data *Stream::read(int64 size)
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{
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int64 max = LOVE_INT64_MAX;
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int64 cur = 0;
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if (isSeekable())
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{
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max = getSize();
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cur = tell();
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}
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if (cur < 0)
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cur = 0;
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else if (cur > max)
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cur = max;
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if (cur + size > max)
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size = max - cur;
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StrongRef<data::ByteData> dst(new data::ByteData(size, false), Acquire::NORETAIN);
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int64 bytesRead = read(dst->getData(), size);
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if (bytesRead < 0 || (bytesRead == 0 && bytesRead != size))
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throw love::Exception("Could not read from stream.");
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if (bytesRead < size)
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dst.set(new data::ByteData(dst->getData(), (size_t) bytesRead), Acquire::NORETAIN);
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dst->retain();
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return dst;
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}
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bool Stream::write(Data *src)
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{
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return write(src, 0, src->getSize());
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}
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bool Stream::write(Data *src, int64 offset, int64 size)
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{
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if (offset < 0 || size < 0 || offset + size > (int64) src->getSize())
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throw love::Exception("Offset and size parameters do not fit within the given Data's size.");
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return write((const uint8 *) src->getData() + offset, size);
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}
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} // love
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