Initial community commit

Src/external_dependencies/openmpt-trunk/include/ancient/src/API.cpp

@@ -0,0 +1,189 @@
+/* Copyright (C) Teemu Suutari */
+
+#include "ancient.hpp"
+#include "Decompressor.hpp"
+#include "common/Buffer.hpp"
+#include "common/StaticBuffer.hpp"
+#include "common/WrappedVectorBuffer.hpp"
+
+#include <memory>
+
+namespace ancient
+{
+
+namespace internal
+{
+
+namespace APIv2
+{
+
+class DecompressorImpl
+{
+public:
+	ConstStaticBuffer _buffer;
+	std::shared_ptr<Decompressor> _decompressor;
+public:
+	DecompressorImpl(const std::vector<uint8_t> &packedData,bool exactSizeKnown,bool verify) :
+		_buffer(packedData.data(), packedData.size()),
+		_decompressor(Decompressor::create(_buffer, exactSizeKnown, verify))
+	{
+		return;
+	}
+	DecompressorImpl(const uint8_t *packedData,size_t packedSize,bool exactSizeKnown,bool verify) :
+		_buffer(packedData, packedSize),
+		_decompressor(Decompressor::create(_buffer, exactSizeKnown, verify))
+	{
+		return;
+	}
+};
+
+}
+
+}
+
+inline namespace APIv2
+{
+
+Error::Error() noexcept
+{
+	// nothing needed
+}
+
+Error::~Error()
+{
+	// nothing needed
+}
+
+InvalidFormatError::InvalidFormatError() noexcept
+{
+	// nothing needed
+}
+
+InvalidFormatError::~InvalidFormatError()
+{
+	// nothing needed
+}
+
+DecompressionError::DecompressionError() noexcept
+{
+	// nothing needed
+}
+
+DecompressionError::~DecompressionError()
+{
+	// nothing needed
+}
+
+VerificationError::VerificationError() noexcept
+{
+	// nothing needed
+}
+
+VerificationError::~VerificationError()
+{
+	// nothing needed
+}
+
+// ---
+
+bool Decompressor::detect(const std::vector<uint8_t> &packedData) noexcept
+{
+	return internal::Decompressor::detect(internal::ConstStaticBuffer(packedData.data(), packedData.size()));
+}
+
+bool Decompressor::detect(const uint8_t *packedData, size_t packedSize) noexcept
+{
+	return internal::Decompressor::detect(internal::ConstStaticBuffer(packedData, packedSize));
+}
+
+Decompressor::Decompressor(const std::vector<uint8_t> &packedData,bool exactSizeKnown,bool verify) :
+	m_impl(std::make_unique<internal::APIv2::DecompressorImpl>(packedData, exactSizeKnown, verify))
+{
+	return;
+}
+
+Decompressor::Decompressor(const uint8_t *packedData,size_t packedSize,bool exactSizeKnown,bool verify) :
+	m_impl(std::make_unique<internal::APIv2::DecompressorImpl>(packedData, packedSize, exactSizeKnown, verify))
+{
+	return;
+}
+
+const std::string &Decompressor::getName() const noexcept
+{
+	return m_impl->_decompressor->getName();
+}
+
+size_t Decompressor::getMaxPackedSize() noexcept
+{
+	return internal::Decompressor::getMaxPackedSize();
+}
+
+size_t Decompressor::getMaxRawSize() noexcept
+{
+	return internal::Decompressor::getMaxRawSize();
+}
+
+std::optional<size_t> Decompressor::getPackedSize() const noexcept
+{
+	size_t packedSize=m_impl->_decompressor->getPackedSize();
+	if (packedSize==0)
+	{
+		return std::nullopt;
+	}
+	return packedSize;
+}
+
+std::optional<size_t> Decompressor::getRawSize() const noexcept
+{
+	size_t rawSize=m_impl->_decompressor->getRawSize();
+	if (rawSize==0)
+	{
+		return std::nullopt;
+	}
+	return rawSize;
+}
+
+std::optional<size_t> Decompressor::getImageSize() const noexcept
+{
+	size_t imageSize=m_impl->_decompressor->getImageSize();
+	size_t imageOffset=m_impl->_decompressor->getImageOffset();
+	bool isImage=((imageSize>0)||(imageOffset>0));
+	if (!isImage)
+	{
+		return std::nullopt;
+	}
+	return imageSize;
+}
+
+std::optional<size_t> Decompressor::getImageOffset() const noexcept
+{
+	size_t imageSize=m_impl->_decompressor->getImageSize();
+	size_t imageOffset=m_impl->_decompressor->getImageOffset();
+	bool isImage=((imageSize>0)||(imageOffset>0));
+	if (!isImage)
+	{
+		return std::nullopt;
+	}
+	return imageOffset;
+}
+
+std::vector<uint8_t> Decompressor::decompress(bool verify)
+{
+	std::vector<uint8_t> result((m_impl->_decompressor->getRawSize())?m_impl->_decompressor->getRawSize():m_impl->_decompressor->getMaxRawSize());
+	{
+		internal::WrappedVectorBuffer buffer(result);
+		m_impl->_decompressor->decompress(buffer, verify);
+	}
+	result.resize(m_impl->_decompressor->getRawSize());
+	result.shrink_to_fit();
+	return result;
+}
+
+Decompressor::~Decompressor()
+{
+	// nothing needed
+}
+
+}
+
+}