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Core/AppFilesystemComponent: Add Open method

This commit is contained in:
SirLynix 2023-02-02 18:30:36 +01:00
parent 3d2aa94ac4
commit 304bf35c08
2 changed files with 63 additions and 0 deletions
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4
include/Nazara/Core/AppFilesystemComponent.hpp
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@ -43,6 +43,9 @@ namespace Nz
inline const VirtualDirectoryPtr& Mount(std::string_view name, std::filesystem::path filepath); inline const VirtualDirectoryPtr& Mount(std::string_view name, std::filesystem::path filepath);
inline const VirtualDirectoryPtr& Mount(std::string_view name, VirtualDirectoryPtr directory); inline const VirtualDirectoryPtr& Mount(std::string_view name, VirtualDirectoryPtr directory);
template<typename T> std::shared_ptr<T> Open(std::string_view assetPath);
template<typename T> std::shared_ptr<T> Open(std::string_view assetPath, typename T::Params params);
template<typename T> void SetDefaultResourceParameters(typename T::Params params); template<typename T> void SetDefaultResourceParameters(typename T::Params params);
AppFilesystemComponent& operator=(const AppFilesystemComponent&) = delete; AppFilesystemComponent& operator=(const AppFilesystemComponent&) = delete;
@ -52,6 +55,7 @@ namespace Nz
private: private:
template<typename T> std::shared_ptr<T> LoadImpl(std::string_view assetPath, const typename T::Params& params); template<typename T> std::shared_ptr<T> LoadImpl(std::string_view assetPath, const typename T::Params& params);
template<typename T> std::shared_ptr<T> OpenImpl(std::string_view assetPath, const typename T::Params& params);
std::vector<std::unique_ptr<ResourceParameters>> m_defaultParameters; std::vector<std::unique_ptr<ResourceParameters>> m_defaultParameters;
VirtualDirectoryPtr m_rootDirectory; VirtualDirectoryPtr m_rootDirectory;

59
include/Nazara/Core/AppFilesystemComponent.inl
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@ -72,6 +72,24 @@ namespace Nz
return m_rootDirectory->StoreDirectory(name, std::move(directory)).directory; return m_rootDirectory->StoreDirectory(name, std::move(directory)).directory;
} }
template<typename T>
std::shared_ptr<T> AppFilesystemComponent::Open(std::string_view assetPath)
{
return Open<T>(assetPath, typename T::Params{});
}
template<typename T>
std::shared_ptr<T> AppFilesystemComponent::Open(std::string_view assetPath, typename T::Params params)
{
if constexpr (Detail::ResourceParameterHasMerge<typename T::Params>::value)
{
if (const auto* defaultParams = GetDefaultResourceParameters<T>())
params.Merge(*defaultParams);
}
return OpenImpl<T>(assetPath, params);
}
template<typename T> template<typename T>
void AppFilesystemComponent::SetDefaultResourceParameters(typename T::Params params) void AppFilesystemComponent::SetDefaultResourceParameters(typename T::Params params)
{ {
@ -154,6 +172,47 @@ namespace Nz
m_rootDirectory->GetEntry(assetPath, callback); m_rootDirectory->GetEntry(assetPath, callback);
return resource; return resource;
} }
template<typename T>
std::shared_ptr<T> AppFilesystemComponent::OpenImpl(std::string_view assetPath, const typename T::Params& params)
{
std::shared_ptr<T> resource;
if (!m_rootDirectory)
return resource;
auto callback = [&](const VirtualDirectory::Entry& entry)
{
return std::visit([&](auto&& arg)
{
using Param = std::decay_t<decltype(arg)>;
if constexpr (std::is_base_of_v<VirtualDirectory::DirectoryEntry, Param>)
{
NazaraError(std::string(assetPath) + " is a directory");
return false;
}
else if constexpr (std::is_same_v<Param, VirtualDirectory::DataPointerEntry>)
{
resource = T::OpenFromMemory(arg.data, arg.size, params);
return true;
}
else if constexpr (std::is_same_v<Param, VirtualDirectory::FileContentEntry>)
{
resource = T::OpenFromMemory(&arg.data[0], arg.data.size(), params);
return true;
}
else if constexpr (std::is_same_v<Param, VirtualDirectory::PhysicalFileEntry>)
{
resource = T::OpenFromFile(arg.filePath, params);
return true;
}
else
static_assert(AlwaysFalse<Param>(), "unhandled case");
}, entry);
};
m_rootDirectory->GetEntry(assetPath, callback);
return resource;
}
} }
#include <Nazara/Core/DebugOff.hpp> #include <Nazara/Core/DebugOff.hpp>