major msg -> obj file transfer refactor

mostly done, some things are hacky or not done

solanaceae/tox_messages/backends/tox_ft_filesystem.cpp

@@ -0,0 +1,77 @@
+#include "./tox_ft_filesystem.hpp"
+
+#include <solanaceae/object_store/meta_components.hpp>
+#include <solanaceae/object_store/meta_components_file.hpp>
+
+#include <solanaceae/file/file2_std.hpp>
+
+#include <iostream>
+
+namespace Backends {
+
+ToxFTFilesystem::ToxFTFilesystem(
+	ObjectStore2& os
+) : StorageBackendI::StorageBackendI(os) {
+}
+
+ToxFTFilesystem::~ToxFTFilesystem(void) {
+}
+
+ObjectHandle ToxFTFilesystem::newObject(ByteSpan id) {
+	ObjectHandle o{_os.registry(), _os.registry().create()};
+
+	o.emplace<ObjComp::Ephemeral::Backend>(this);
+	o.emplace<ObjComp::ID>(std::vector<uint8_t>{id});
+	//o.emplace<ObjComp::Ephemeral::FilePath>(object_file_path.generic_u8string());
+
+	_os.throwEventConstruct(o);
+
+	return o;
+}
+
+std::unique_ptr<File2I> ToxFTFilesystem::file2(Object ov, FILE2_FLAGS flags) {
+	if (flags & FILE2_RAW) {
+		std::cerr << "TFTF error: does not support raw modes\n";
+		return nullptr;
+	}
+
+	if (flags == FILE2_NONE) {
+		std::cerr << "TFTF error: no file mode set\n";
+		assert(false);
+		return nullptr;
+	}
+
+	if (flags & FILE2_WRITE) {
+		std::cerr << "TFTF error: opening file in write mode not supported\n";
+	}
+
+	ObjectHandle o{_os.registry(), ov};
+
+	if (!static_cast<bool>(o)) {
+		return nullptr;
+	}
+
+	// will this do if we go and support enc?
+	// use ObjComp::Ephemeral::FilePath instead??
+	if (!o.all_of<ObjComp::F::SingleInfoLocal>()) {
+		return nullptr;
+	}
+
+	const auto& file_path = o.get<ObjComp::F::SingleInfoLocal>().file_path;
+	if (file_path.empty()) {
+		return nullptr;
+	}
+
+	// read only
+	auto res = std::make_unique<File2RFile>(file_path);
+
+	if (!res || !res->isGood()) {
+		std::cerr << "TFTF error: failed constructing file '" << file_path << "'\n";
+		return nullptr;
+	}
+
+	return res;
+}
+
+} // Backends
+

solanaceae/tox_messages/backends/tox_ft_filesystem.hpp

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <solanaceae/object_store/object_store.hpp>
+
+namespace Backends {
+
+struct ToxFTFilesystem : public StorageBackendI {
+	ToxFTFilesystem(
+		ObjectStore2& os
+	);
+	~ToxFTFilesystem(void);
+
+	ObjectHandle newObject(ByteSpan id) override;
+
+	std::unique_ptr<File2I> file2(Object o, FILE2_FLAGS flags) override;
+};
+
+} // Backends
+