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#pragma once
#include "../CommonBase.h"
#if defined(DEATH_TARGET_ANDROID) || defined(DOXYGEN_GENERATING_OUTPUT)
#include "Stream.h"
#include "FileAccess.h"
#include "../Containers/String.h"
#include "../Containers/StringView.h"
#include <android_native_app_glue.h> // for android_app
#include <android/asset_manager.h>
namespace Death { namespace IO {
//###==##====#=====--==~--~=~- --- -- - - - -
using Containers::Literals::operator"" _s;
/**
@brief Read-only streaming directly from Android asset files
@partialsupport Available only on @ref DEATH_TARGET_ANDROID "Android" platform.
*/
class AndroidAssetStream : public Stream
{
public:
/** @{ @name Constants */
/** @brief Path prefix of Android asset files */
static constexpr Containers::StringView Prefix = "assets:"_s;
/** @} */
AndroidAssetStream(Containers::StringView path, FileAccess mode);
AndroidAssetStream(Containers::String&& path, FileAccess mode);
~AndroidAssetStream() override;
AndroidAssetStream(const AndroidAssetStream&) = delete;
AndroidAssetStream& operator=(const AndroidAssetStream&) = delete;
void Dispose() override;
std::int64_t Seek(std::int64_t offset, SeekOrigin origin) override;
std::int64_t GetPosition() const override;
std::int64_t Read(void* destination, std::int64_t bytesToRead) override;
std::int64_t Write(const void* source, std::int64_t bytesToWrite) override;
bool Flush() override;
bool IsValid() override;
std::int64_t GetSize() const override;
std::int64_t SetSize(std::int64_t size) override;
/** @brief Returns file path */
Containers::StringView GetPath() const;
#if defined(DEATH_USE_FILE_DESCRIPTORS)
/** @brief Returns file descriptor */
DEATH_ALWAYS_INLINE std::int32_t GetFileDescriptor() const {
return _fileDescriptor;
}
#endif
/** @brief Sets the global pointer to the AAssetManager */
static void InitializeAssetManager(struct android_app* state);
/** @brief Returns the path of an Android asset without the prefix */
static Containers::StringView TryGetAssetPath(const Containers::StringView path);
/** @brief Returns path to the application's internal data directory */
static const char* GetInternalDataPath();
/** @brief Returns path to the application's external (removable/mountable) data directory */
static const char* GetExternalDataPath();
/** @brief Returns path to the directory containing the application's OBB files */
static const char* GetObbPath();
/** @brief Checks if an asset path exists as a file or as a directory and can be opened */
static bool TryOpen(const Containers::StringView path);
/** @brief Checks if an asset path exists and can be opened as a file */
static bool TryOpenFile(const Containers::StringView path);
/** @brief Checks if an asset path exists and can be opened as a directory */
static bool TryOpenDirectory(const Containers::StringView path);
/** @brief Returns the total size of the asset data */
static std::int64_t GetFileSize(const Containers::StringView path);
#ifndef DOXYGEN_GENERATING_OUTPUT
static AAssetDir* OpenDirectory(const Containers::StringView path);
static void CloseDirectory(AAssetDir* assetDir);
static void RewindDirectory(AAssetDir* assetDir);
static const char* GetNextFileName(AAssetDir* assetDir);
#endif
private:
static ANativeActivity* _nativeActivity;
Containers::String _path;
std::int64_t _size;
#if defined(DEATH_USE_FILE_DESCRIPTORS)
std::int32_t _fileDescriptor;
unsigned long int _startOffset;
#else
AAsset* _asset;
#endif
void Open(FileAccess mode);
};
}}
#endif
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