Merge commit '9f5f3e26efed6cd27f2a8ff0746f018d75986934'

.gitignore

@@ -20,3 +20,4 @@ imgui.ini
 *.sav
 studio_state.json
 tags
+*-manifest.json

CMakeLists.txt

@@ -28,7 +28,7 @@ set(CMAKE_CXX_STANDARD 23)
 if(APPLE)
 	set(CMAKE_MACOSX_RPATH OFF)
 else()
-	if(UNIX)
+	if(UNIX AND NOT DEFINED BUILD_SHARED_LIBS)
 		set(BUILD_SHARED_LIBS ON)
 	endif()
 	set(CMAKE_INSTALL_RPATH "$ORIGIN/../lib")

deps/buildcore/base.mk

@@ -44,6 +44,9 @@ ifdef BC_VAR_USE_DOCKER_DEVENV
 			exit 1
 		endif
 	endif
+	ifndef BC_VAR_DEVENV_ROOT
+		BC_VAR_DEVENV_ROOT="."
+	endif
 else
 	BC_CMD_PY3=${BC_CMD_HOST_PY3}
 endif
@@ -90,7 +93,7 @@ purge:
 	${BC_CMD_RM_RF} compile_commands.json
 .PHONY: test
 test: build
-	${BC_CMD_ENVRUN} ${BC_CMD_PY3} -m mypy ${BC_VAR_SCRIPTS}
+	${BC_CMD_ENVRUN} mypy ${BC_VAR_SCRIPTS}
 	${BC_CMD_CMAKE_BUILD} ${BC_VAR_BUILD_PATH} test
 .PHONY: test-verbose
 test-verbose: build
@@ -102,7 +105,7 @@ test-rerun-verbose: build
 ifdef BC_VAR_USE_DOCKER_DEVENV
 .PHONY: devenv-image
 devenv-image:
-	docker build . -t ${BC_VAR_DEVENV_IMAGE}
+	docker build ${BC_VAR_DEVENV_ROOT} -t ${BC_VAR_DEVENV_IMAGE}
 .PHONY: devenv-create
 devenv-create:
 	docker run -d \

deps/ox/src/ox/fs/filestore/filestoretemplate.hpp

@@ -315,7 +315,7 @@ Error FileStoreTemplate<size_t>::remove(uint64_t id) {
 
 template<typename size_t>
 Error FileStoreTemplate<size_t>::read(uint64_t id, void *out, FsSize_t outSize, FsSize_t *size) const {
-	oxTracef("ox.fs.FileStoreTemplate.read", "Attempting to read from inode {}", id);
+	oxTracef("ox.fs.FileStoreTemplate.read", "Attempting to read inode {}", id);
 	auto src = find(static_cast<size_t>(id));
 	// error check
 	if (!src.valid()) {
@@ -333,7 +333,7 @@ Error FileStoreTemplate<size_t>::read(uint64_t id, void *out, FsSize_t outSize,
 		oxTracef("ox.fs.FileStoreTemplate.read.fail", "Could not read data section of item: {}", id);
 		oxTracef("ox.fs.FileStoreTemplate.read.fail",
 		         "Item data section size: {}, Expected size: {}", srcData.size(), outSize);
-		return OxError(1);
+		return OxError(1, "Invalid inode");
 	}
 
 	ox::memcpy(out, srcData, srcData.size());
@@ -341,7 +341,7 @@ Error FileStoreTemplate<size_t>::read(uint64_t id, void *out, FsSize_t outSize,
 		*size = src.size();
 	}
 
-	return OxError(0);
+	return {};
 }
 
 template<typename size_t>

deps/ox/src/ox/fs/filesystem/directory.hpp

@@ -43,13 +43,15 @@ struct OX_PACKED DirectoryEntry {
 	public:
 		constexpr DirectoryEntry() noexcept = default;
 
-		Error init(InodeId_t inode, const char *name, InodeId_t bufferSize) noexcept {
+		Error init(InodeId_t inode, ox::CRStringView name, size_t bufferSize) noexcept {
-			m_bufferSize = bufferSize;
+			oxTracef("ox.fs.DirectoryEntry.init", "inode: {}, name: {}, bufferSize: {}", inode, name, bufferSize);
+			m_bufferSize = static_cast<InodeId_t>(bufferSize);
 			auto d = data();
 			if (d.valid()) {
 				d->inode = inode;
-				ox::strncpy(d->name, name, ox::min(bufferSize, static_cast<InodeId_t>(MaxFileNameLength)));
+				auto const maxStrSz = bufferSize - 1 - sizeof(*this);
-				return OxError(0);
+				ox::strncpy(d->name, name.data(), ox::min(maxStrSz, name.len()));
+				return {};
 			}
 			return OxError(1);
 		}
@@ -103,23 +105,23 @@ class Directory {
 		 */
 		Error init() noexcept;
 
-		Error mkdir(PathIterator path, bool parents, FileName *nameBuff = nullptr);
+		Error mkdir(PathIterator path, bool parents);
 
 		/**
 		 * @param parents indicates the operation should create non-existent directories in the path, like mkdir -p
 		 */
-		Error write(PathIterator path, uint64_t inode64, FileName *nameBuff = nullptr) noexcept;
+		Error write(PathIterator path, uint64_t inode64) noexcept;
 
-		Error remove(PathIterator path, FileName *nameBuff = nullptr) noexcept;
+		Error remove(PathIterator path) noexcept;
 
 		template<typename F>
 		Error ls(F cb) noexcept;
 
 		[[nodiscard]]
-		Result<typename FileStore::InodeId_t> findEntry(const FileName &name) const noexcept;
+		Result<typename FileStore::InodeId_t> findEntry(const StringView &name) const noexcept;
 
 		[[nodiscard]]
-		Result<typename FileStore::InodeId_t> find(PathIterator name, FileName *nameBuff = nullptr) const noexcept;
+		Result<typename FileStore::InodeId_t> find(PathIterator path) const noexcept;
 
 };
 
@@ -145,22 +147,17 @@ Error Directory<FileStore, InodeId_t>::init() noexcept {
 	}
 	new (buff) Buffer(Size);
 	m_size = Size;
-	return OxError(0);
+	return {};
 }
 
 template<typename FileStore, typename InodeId_t>
-Error Directory<FileStore, InodeId_t>::mkdir(PathIterator path, bool parents, FileName *nameBuff) {
+Error Directory<FileStore, InodeId_t>::mkdir(PathIterator path, bool parents) {
 	if (path.valid()) {
 		oxTrace("ox.fs.Directory.mkdir", path.fullPath());
-		// reuse nameBuff if it has already been allocated, as it is a rather large variable
-		if (nameBuff == nullptr) {
-			nameBuff = new (ox_alloca(sizeof(FileName))) FileName;
-		}
-
 		// determine if already exists
-		auto name = nameBuff;
+		ox::StringView name;
-		oxReturnError(path.get(*name));
+		oxReturnError(path.get(name));
-		auto childInode = find(PathIterator(*name));
+		auto childInode = find(PathIterator(name));
 		if (!childInode.ok()) {
 			// if this is not the last item in the path and parents is disabled,
 			// return an error
@@ -171,12 +168,10 @@ Error Directory<FileStore, InodeId_t>::mkdir(PathIterator path, bool parents, Fi
 			oxTracef("ox.fs.Directory.mkdir", "Generated Inode ID: {}", childInode.value);
 			oxLogError(childInode.error);
 			oxReturnError(childInode.error);
-
 			// initialize the directory
 			Directory<FileStore, InodeId_t> child(m_fs, childInode.value);
 			oxReturnError(child.init());
-
+			auto err = write(PathIterator(name), childInode.value);
-			auto err = write(PathIterator(*name), childInode.value);
 			if (err) {
 				oxLogError(err);
 				// could not index the directory, delete it
@@ -184,46 +179,35 @@ Error Directory<FileStore, InodeId_t>::mkdir(PathIterator path, bool parents, Fi
 				return err;
 			}
 		}
-
 		Directory<FileStore, InodeId_t> child(m_fs, childInode.value);
 		if (path.hasNext()) {
-			oxReturnError(child.mkdir(path.next(), parents, nameBuff));
+			oxReturnError(child.mkdir(path.next(), parents));
 		}
 	}
-	return OxError(0);
+	return {};
 }
 
 template<typename FileStore, typename InodeId_t>
-Error Directory<FileStore, InodeId_t>::write(PathIterator path, uint64_t inode64, FileName *nameBuff) noexcept {
+Error Directory<FileStore, InodeId_t>::write(PathIterator path, uint64_t inode64) noexcept {
 	const auto inode = static_cast<InodeId_t>(inode64);
-	// reuse nameBuff if it has already been allocated, as it is a rather large variable
+	ox::StringView name;
-	if (nameBuff == nullptr) {
-		nameBuff = new (ox_alloca(sizeof(FileName))) FileName;
-	}
-	auto name = nameBuff;
-
 	if (path.next().hasNext()) { // not yet at target directory, recurse to next one
-		oxReturnError(path.get(*name));
 		oxTracef("ox.fs.Directory.write", "Attempting to write to next sub-Directory: {} of {}",
-		         *name, path.fullPath());
+		         name, path.fullPath());
-		oxRequire(nextChild, findEntry(*name));
+		oxReturnError(path.get(name));
-		oxTracef("ox.fs.Directory.write", "{}: {}", *name, nextChild);
+		oxRequire(nextChild, findEntry(name));
+		oxTracef("ox.fs.Directory.write", "{}: {}", name, nextChild);
 		if (nextChild) {
-			// reuse name because it is a rather large variable and will not be used again
+			return Directory(m_fs, nextChild).write(path.next(), inode);
-			// be attentive that this remains true
-			name = nullptr;
-			return Directory(m_fs, nextChild).write(path.next(), inode, nameBuff);
 		} else {
-			oxTracef("ox.fs.Directory.write", "{} not found and not allowed to create it.", *name);
+			oxTracef("ox.fs.Directory.write", "{} not found and not allowed to create it.", name);
 			return OxError(1, "File not found and not allowed to create it.");
 		}
 	} else {
 		oxTrace("ox.fs.Directory.write", path.fullPath());
+		oxReturnError(path.next(name));
 		// insert the new entry on this directory
-
 		// get the name
-		oxReturnError(path.next(*name));
-
 		// find existing version of directory
 		oxTracef("ox.fs.Directory.write", "Searching for directory inode {}", m_inodeId);
 		oxRequire(oldStat, m_fs.stat(m_inodeId));
@@ -233,8 +217,7 @@ Error Directory<FileStore, InodeId_t>::write(PathIterator path, uint64_t inode64
 			oxTrace("ox.fs.Directory.write.fail", "Could not read existing version of Directory");
 			return OxError(1, "Could not read existing version of Directory");
 		}
-
+		const auto pathSize = name.len() + 1;
-		const auto pathSize = name->len() + 1;
 		const auto entryDataSize = DirectoryEntry<InodeId_t>::DirectoryEntryData::spaceNeeded(pathSize);
 		const auto newSize = oldStat.size + Buffer::spaceNeeded(entryDataSize);
 		auto cpy = ox_malloca(newSize, Buffer, *old, oldStat.size);
@@ -242,29 +225,22 @@ Error Directory<FileStore, InodeId_t>::write(PathIterator path, uint64_t inode64
 			oxTrace("ox.fs.Directory.write.fail", "Could not allocate memory for copy of Directory");
 			return OxError(1, "Could not allocate memory for copy of Directory");
 		}
-
 		oxReturnError(cpy->setSize(newSize));
 		auto val = cpy->malloc(entryDataSize).value;
 		if (!val.valid()) {
 			oxTrace("ox.fs.Directory.write.fail", "Could not allocate memory for new directory entry");
 			return OxError(1, "Could not allocate memory for new directory entry");
 		}
-
+		oxTracef("ox.fs.Directory.write", "Attempting to write Directory entry: {}", name);
-		oxTracef("ox.fs.Directory.write", "Attempting to write Directory entry: {}", name->data());
+		oxReturnError(val->init(inode, name, val.size()));
-		oxReturnError(val->init(inode, name->data(), val.size()));
 		return m_fs.write(m_inodeId, cpy.get(), cpy->size(), static_cast<uint8_t>(FileType::Directory));
 	}
 }
 
 template<typename FileStore, typename InodeId_t>
-Error Directory<FileStore, InodeId_t>::remove(PathIterator path, FileName *nameBuff) noexcept {
+Error Directory<FileStore, InodeId_t>::remove(PathIterator path) noexcept {
-	// reuse nameBuff if it has already been allocated, as it is a rather large variable
+	ox::StringView name;
-	if (nameBuff == nullptr) {
-		nameBuff = new (ox_alloca(sizeof(FileName))) FileName;
-	}
-	auto &name = *nameBuff;
 	oxReturnError(path.get(name));
-
 	oxTrace("ox.fs.Directory.remove", name);
 	auto buff = m_fs.read(m_inodeId).template to<Buffer>();
 	if (buff.valid()) {
@@ -283,7 +259,7 @@ Error Directory<FileStore, InodeId_t>::remove(PathIterator path, FileName *nameB
 		oxTrace("ox.fs.Directory.remove.fail", "Could not find directory buffer");
 		return OxError(1, "Could not find directory buffer");
 	}
-	return OxError(0);
+	return {};
 }
 
 template<typename FileStore, typename InodeId_t>
@@ -295,7 +271,6 @@ Error Directory<FileStore, InodeId_t>::ls(F cb) noexcept {
 		oxTrace("ox.fs.Directory.ls.fail", "Could not directory buffer");
 		return OxError(1, "Could not directory buffer");
 	}
-
 	oxTrace("ox.fs.Directory.ls", "Found directory buffer.");
 	for (auto i = buff->iterator(); i.valid(); i.next()) {
 		auto data = i->data();
@@ -305,12 +280,11 @@ Error Directory<FileStore, InodeId_t>::ls(F cb) noexcept {
 			oxTrace("ox.fs.Directory.ls", "INVALID DIRECTORY ENTRY");
 		}
 	}
-
+	return {};
-	return OxError(0);
 }
 
 template<typename FileStore, typename InodeId_t>
-Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::findEntry(const FileName &name) const noexcept {
+Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::findEntry(CRStringView name) const noexcept {
 	oxTrace("ox.fs.Directory.findEntry", name);
 	auto buff = m_fs.read(m_inodeId).template to<Buffer>();
 	if (!buff.valid()) {
@@ -327,7 +301,7 @@ Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::findEntry
 				return static_cast<InodeId_t>(data->inode);
 			}
 		} else {
-			oxTrace("ox.fs.Directory.findEntry") << "INVALID DIRECTORY ENTRY";
+			oxTrace("ox.fs.Directory.findEntry", "INVALID DIRECTORY ENTRY");
 		}
 	}
 	oxTrace("ox.fs.Directory.findEntry.fail", "Entry not present");
@@ -335,22 +309,15 @@ Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::findEntry
 }
 
 template<typename FileStore, typename InodeId_t>
-Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::find(PathIterator path, FileName *nameBuff) const noexcept {
+Result<typename FileStore::InodeId_t> Directory<FileStore, InodeId_t>::find(PathIterator path) const noexcept {
-	// reuse nameBuff if it has already been allocated, as it is a rather large variable
-	if (nameBuff == nullptr) {
-		nameBuff = new (ox_alloca(sizeof(FileName))) FileName;
-	}
-
 	// determine if already exists
-	auto name = nameBuff;
+	ox::StringView name;
-	oxReturnError(path.get(*name));
+	oxReturnError(path.get(name));
-
+	oxRequire(v, findEntry(name));
-	oxRequire(v, findEntry(*name));
 	// recurse if not at end of path
 	if (auto p = path.next(); p.valid()) {
 		Directory dir(m_fs, v);
-		name = nullptr;
+		return dir.find(p);
-		return dir.find(p, nameBuff);
 	}
 	return v;
 }

deps/ox/src/ox/fs/filesystem/filesystem.hpp

@@ -323,6 +323,7 @@ Error FileSystemTemplate<FileStore, Directory>::move(CRStringView src, CRStringV
 
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::readFilePath(CRStringView path, void *buffer, std::size_t buffSize) noexcept {
+	oxTrace("ox.fs.FileSystemTemplate.readFilePath", path);
 	oxRequire(fd, fileSystemData());
 	Directory rootDir(m_fs, fd.rootDirInode);
 	oxRequire(s, stat(path));
@@ -342,6 +343,7 @@ Result<const char*> FileSystemTemplate<FileStore, Directory>::directAccessPath(C
 
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::readFileInode(uint64_t inode, void *buffer, std::size_t buffSize) noexcept {
+	oxTracef("ox.fs.FileSystemTemplate.readFileInode", "{}", inode);
 	oxRequire(s, stat(inode));
 	if (s.size > buffSize) {
 		return OxError(1, "Buffer to small to load file");
@@ -409,24 +411,29 @@ Error FileSystemTemplate<FileStore, Directory>::resize() noexcept {
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::resize(uint64_t size, void *buffer) noexcept {
 	oxReturnError(m_fs.resize(static_cast<size_t>(size), buffer));
-	return OxError(0);
+	return {};
 }
 
 template<typename FileStore, typename Directory>
-Error FileSystemTemplate<FileStore, Directory>::writeFilePath(CRStringView path, const void *buffer, uint64_t size, FileType fileType) noexcept {
+Error FileSystemTemplate<FileStore, Directory>::writeFilePath(
+		CRStringView path,
+		const void *buffer,
+		uint64_t size,
+		FileType fileType) noexcept {
+	oxTrace("ox.fs.FileSystemTemplate.writeFilePath", path);
 	auto [inode, err] = find(path);
 	if (err) {
-		oxRequire(generatedId, m_fs.generateInodeId());
+		oxReturnError(m_fs.generateInodeId().moveTo(inode));
-		inode = generatedId;
 		oxRequireM(rootDir, this->rootDir());
 		oxReturnError(rootDir.write(path, inode));
 	}
 	oxReturnError(writeFileInode(inode, buffer, size, fileType));
-	return OxError(0);
+	return {};
 }
 
 template<typename FileStore, typename Directory>
 Error FileSystemTemplate<FileStore, Directory>::writeFileInode(uint64_t inode, const void *buffer, uint64_t size, FileType fileType) noexcept {
+	oxTrace("ox.fs.FileSystemTemplate.writeFileInode", ox::itoa(inode));
 	return m_fs.write(inode, buffer, static_cast<size_t>(size), static_cast<uint8_t>(fileType));
 }
 

deps/ox/src/ox/fs/filesystem/passthroughfs.cpp

@@ -100,7 +100,6 @@ Result<FileStat> PassThroughFS::statPath(CRStringView path) const noexcept {
 		FileType::Directory : FileType::NormalFile;
 	oxTracef("ox.fs.PassThroughFS.statInode", "{} {}", ec.message(), path);
 	const uint64_t size = type == FileType::Directory ? 0 : std::filesystem::file_size(p, ec);
-	oxTracef("ox.fs.PassThroughFS.statInode", "{} {}", ec.message(), path);
 	oxTracef("ox.fs.PassThroughFS.statInode.size", "{} {}", path, size);
 	oxReturnError(OxError(static_cast<ox::ErrorCode>(ec.value()), "PassThroughFS: stat failed"));
 	return FileStat{0, 0, size, type};

deps/ox/src/ox/fs/filesystem/pathiterator.cpp

@@ -40,30 +40,9 @@ Error PathIterator::dirPath(char *out, std::size_t outSize) {
 	}
 }
 
-/**
- * @return 0 if no error
- */
-Error PathIterator::fileName(char *out, std::size_t outSize) {
-	auto idx = ox::lastIndexOf(m_path, '/', m_maxSize);
-	if (idx >= 0) {
-		idx++; // pass up the preceding /
-		std::size_t fileNameSize = static_cast<size_t>(ox::strlen(&m_path[idx]));
-		if (fileNameSize < outSize) {
-			ox::memcpy(out, &m_path[idx], fileNameSize);
-			out[fileNameSize] = 0;
-			return OxError(0);
-		} else {
-			return OxError(1);
-		}
-	} else {
-		return OxError(2);
-	}
-}
-
 // Gets the get item in the path
-Error PathIterator::get(IString<MaxFileNameLength> &fileName) {
+Error PathIterator::get(StringView &fileName) {
 	std::size_t size = 0;
-	std::ignore = fileName.resize(MaxFileNameLength);
 	if (m_iterator >= m_maxSize) {
 		oxTracef("ox.fs.PathIterator.get", "m_iterator ({}) >= m_maxSize ({})", m_iterator, m_maxSize);
 		return OxError(1);
@@ -88,22 +67,21 @@ Error PathIterator::get(IString<MaxFileNameLength> &fileName) {
 	if (size >= MaxFileNameLength || size == 0) {
 		return OxError(1);
 	}
-	ox::memcpy(fileName.data(), &m_path[start], size);
+	fileName = ox::substr(m_path, start, start + size);
 	// truncate trailing /
 	if (size && fileName[size - 1] == '/') {
-		size--;
+		fileName = ox::substr(m_path, start, start + size - 1);
 	}
-	oxReturnError(fileName.resize(size));
+	oxAssert(fileName[fileName.len()-1] != '/', "name ends in /");
 	return {};
 }
 
 /**
  * @return 0 if no error
  */
-Error PathIterator::next(IString<MaxFileNameLength> &fileName) {
+Error PathIterator::next(StringView &fileName) {
 	std::size_t size = 0;
 	auto retval = OxError(1);
-	std::ignore = fileName.resize(MaxFileNameLength);
 	if (m_iterator < m_maxSize && ox::strlen(&m_path[m_iterator])) {
 		retval = OxError(0);
 		if (m_path[m_iterator] == '/') {
@@ -122,15 +100,14 @@ Error PathIterator::next(IString<MaxFileNameLength> &fileName) {
 		if (size >= MaxFileNameLength) {
 			return OxError(1);
 		}
-		ox::memcpy(fileName.data(), &m_path[start], size);
+		fileName = ox::substr(m_path, start, start + size);
-	}
 		// truncate trailing /
-	if (size && fileName[size - 1] == '/') {
+		while (fileName.len() && fileName[fileName.len() - 1] == '/') {
-		size--;
+			fileName = ox::substr(m_path, start, start + size);
 		}
-	fileName[size] = 0; // end with null terminator
-	oxReturnError(fileName.resize(size));
 		m_iterator += size;
+		oxAssert(fileName.len() == 0 || fileName[fileName.len()-1] != '/', "name ends in /");
+	}
 	return retval;
 }
 

deps/ox/src/ox/fs/filesystem/pathiterator.hpp

@@ -13,7 +13,6 @@
 namespace ox {
 
 constexpr std::size_t MaxFileNameLength = 255;
-using FileName = IString<MaxFileNameLength>;
 
 class PathIterator {
 	private:
@@ -28,29 +27,12 @@ class PathIterator {
 
 		PathIterator(CRStringView path);
 
-		/**
-		 * @return 0 if no error
-		 */
 		Error dirPath(char *pathOut, std::size_t pathOutSize);
 
-		/**
+		Error next(StringView &fileName);
-		 * @return 0 if no error
-		 */
-		Error fileName(char *out, std::size_t outSize);
 
-		/**
+		Error get(StringView &fileName);
-		 * @return 0 if no error
-		 */
-		Error next(FileName &fileName);
 
-		/**
-		 * @return 0 if no error
-		 */
-		Error get(FileName &fileName);
-
-		/**
-		 * @return 0 if no error
-		 */
 		Result<std::size_t> nextSize() const;
 
 		[[nodiscard]]

deps/ox/src/ox/fs/ptrarith/nodebuffer.hpp

@@ -174,7 +174,7 @@ template<typename size_t, typename Item>
 NodeBuffer<size_t, Item>::NodeBuffer(std::size_t size) noexcept {
 	m_header.size = static_cast<size_t>(size);
 	ox::memset(this + 1, 0, size - sizeof(*this));
-	oxTracef("ox.NodeBuffer.constructor", "{}", m_header.firstItem.get());
+	oxTracef("ox.ptrarith.NodeBuffer.constructor", "{}", m_header.firstItem.get());
 }
 
 template<typename size_t, typename Item>

deps/ox/src/ox/fs/ptrarith/ptr.hpp

@@ -224,7 +224,7 @@ constexpr const Ptr<SubT, size_t, sizeof(T)> Ptr<T, size_t, minOffset>::subPtr(s
 template<typename T, typename size_t, size_t minOffset>
 template<typename SubT>
 constexpr const Ptr<SubT, size_t, sizeof(T)> Ptr<T, size_t, minOffset>::subPtr(size_t offset) const noexcept {
-	oxTracef("ox.fs.Ptr.subPtr", "{} {} {} {} {}", m_itemOffset, this->size(), offset, m_itemSize, (m_itemSize - offset));
+	oxTracef("ox.ptrarith.Ptr.subPtr", "{} {} {} {} {}", m_itemOffset, this->size(), offset, m_itemSize, (m_itemSize - offset));
 	return subPtr<SubT>(offset, m_itemSize - offset);
 }
 
@@ -237,7 +237,7 @@ constexpr Ptr<SubT, size_t, sizeof(T)> Ptr<T, size_t, minOffset>::subPtr(size_t
 template<typename T, typename size_t, size_t minOffset>
 template<typename SubT>
 constexpr Ptr<SubT, size_t, sizeof(T)> Ptr<T, size_t, minOffset>::subPtr(size_t offset) noexcept {
-	oxTracef("ox.fs.Ptr.subPtr", "{} {} {} {} {}", m_itemOffset, this->size(), offset, m_itemSize, (m_itemSize - offset));
+	oxTracef("ox.ptrarith.Ptr.subPtr", "{} {} {} {} {}", m_itemOffset, this->size(), offset, m_itemSize, (m_itemSize - offset));
 	return subPtr<SubT>(offset, m_itemSize - offset);
 }
 

deps/ox/src/ox/fs/test/CMakeLists.txt

@@ -19,7 +19,6 @@ add_test("[ox/fs] PathIterator::next5" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests
 add_test("[ox/fs] PathIterator::hasNext" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests PathIterator::hasNext)
 
 add_test("[ox/fs] PathIterator::dirPath" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests PathIterator::dirPath)
-add_test("[ox/fs] PathIterator::fileName" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests PathIterator::fileName)
 
 add_test("[ox/fs] NodeBuffer::insert" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests "NodeBuffer::insert")
 add_test("[ox/fs] FileStore::readWrite" ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/FSTests "FileStore::readWrite")

deps/ox/src/ox/fs/test/tests.cpp

@@ -58,9 +58,9 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 		{
 			"PathIterator::next1",
 			[](ox::StringView) {
-				auto const path = ox::String("/usr/share/charset.gbag");
+				auto constexpr path = ox::StringLiteral("/usr/share/charset.gbag");
 				ox::PathIterator it(path.c_str(), path.len());
-				ox::FileName buff;
+				ox::StringView buff;
 				oxAssert(it.next(buff) == 0 && buff == "usr", "PathIterator shows wrong next");
 				oxAssert(it.next(buff) == 0 && buff == "share", "PathIterator shows wrong next");
 				oxAssert(it.next(buff) == 0 && buff == "charset.gbag", "PathIterator shows wrong next");
@@ -70,11 +70,13 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 		{
 			"PathIterator::next2",
 			[](ox::StringView) {
-				auto const path = ox::String("/usr/share/");
+				auto constexpr path = ox::StringView("/usr/share/");
-				ox::PathIterator it(path.c_str(), path.len());
+				ox::PathIterator it(path);
-				ox::FileName buff;
+				ox::StringView buff;
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "usr") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff), "PathIterator::next returned error");
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "share") == 0, "PathIterator shows wrong next");
+				oxExpect(buff, "usr");
+				oxAssert(it.next(buff), "PathIterator::next returned error");
+				oxExpect(buff, "share");
 				return OxError(0);
 			}
 		},
@@ -83,20 +85,20 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 			[](ox::StringView) {
 				auto const path = ox::String("/");
 				ox::PathIterator it(path.c_str(), path.len());
-				ox::FileName buff;
+				ox::StringView buff;
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "\0") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "\0", "PathIterator shows wrong next");
 				return OxError(0);
 			}
 		},
 		{
 			"PathIterator::next4",
 			[](ox::StringView) {
-				auto const path = ox::String("usr/share/charset.gbag");
+				auto constexpr path = ox::StringLiteral("usr/share/charset.gbag");
-				ox::PathIterator it(path.c_str(), path.len());
+				ox::PathIterator it(path);
-				ox::FileName buff;
+				ox::StringView buff;
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "usr") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "usr", "PathIterator shows wrong next");
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "share") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "share", "PathIterator shows wrong next");
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "charset.gbag") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "charset.gbag", "PathIterator shows wrong next");
 				return OxError(0);
 			}
 		},
@@ -105,32 +107,22 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 			[](ox::StringView) {
 				auto const path = ox::String("usr/share/");
 				ox::PathIterator it(path.c_str(), path.len());
-				ox::FileName buff;
+				ox::StringView buff;
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "usr") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "usr", "PathIterator shows wrong next");
-				oxAssert(it.next(buff) == 0 && ox::strcmp(buff, "share") == 0, "PathIterator shows wrong next");
+				oxAssert(it.next(buff) == 0 && buff == "share", "PathIterator shows wrong next");
 				return OxError(0);
 			}
 		},
 		{
 			"PathIterator::dirPath",
 			[] (ox::StringView) {
-				auto const path = ox::String("/usr/share/charset.gbag");
+				auto constexpr path = ox::StringLiteral("/usr/share/charset.gbag");
 				ox::PathIterator it(path.c_str(), path.len());
 				auto buff = static_cast<char*>(ox_alloca(path.len() + 1));
 				oxAssert(it.dirPath(buff, path.len()) == 0 && ox::strcmp(buff, "/usr/share/") == 0, "PathIterator shows incorrect dir path");
 				return OxError(0);
 			}
 		},
-		{
-			"PathIterator::fileName",
-			[](ox::StringView) {
-				auto const path = ox::String("/usr/share/charset.gbag");
-				ox::PathIterator it(path.c_str(), path.len());
-				auto buff = static_cast<char*>(ox_alloca(path.len() + 1));
-				oxAssert(it.fileName(buff, path.len()) == 0 && ox::strcmp(buff, "charset.gbag") == 0, "PathIterator shows incorrect file name");
-				return OxError(0);
-			}
-		},
 		{
 			"PathIterator::hasNext",
 			[](ox::StringView) {
@@ -221,7 +213,6 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 				oxTrace("ox.fs.test.FileSystem") << "format";
 				oxAssert(ox::FileSystem32::format(fsBuff.data(), fsBuff.size()), "FileSystem format failed");
 				ox::FileSystem32 fs(ox::FileStore32(fsBuff.data(), fsBuff.size()));
-
 				oxTrace("ox.fs.test.FileSystem") << "mkdir";
 				oxAssert(fs.mkdir("/dir", true), "mkdir failed");
 				oxAssert(fs.stat("/dir").error, "mkdir failed");
@@ -229,7 +220,6 @@ const std::map<ox::StringView, std::function<ox::Error(ox::StringView)>> tests =
 				oxAssert(fs.stat("/l1d1/l2d1/l3d1").error, "mkdir failed");
 				oxAssert(fs.mkdir("/l1d1/l2d2", true), "mkdir failed");
 				oxAssert(fs.stat("/l1d1/l2d2").error, "mkdir failed");
-
 				return OxError(0);
 			}
 		},

deps/ox/src/ox/model/def.hpp

@@ -10,8 +10,10 @@
 
 #include <ox/std/concepts.hpp>
 
+// oxModelFwdDecl is necessary because Apple-Clang is broken...
+#define oxModelFwdDecl(modelName) constexpr ox::Error model(auto *io, ox::CommonPtrWith<modelName> auto *o) noexcept
 #define oxModelBegin(modelName) constexpr ox::Error model(auto *io, [[maybe_unused]] ox::CommonPtrWith<modelName> auto *o) noexcept { oxReturnError(io->template setTypeInfo<modelName>());
 #define oxModelEnd() return OxError(0); }
 #define oxModelField(fieldName) oxReturnError(io->field(#fieldName, &o->fieldName));
 #define oxModelFieldRename(objFieldName, serFieldName) oxReturnError(io->field(#serFieldName, &o->objFieldName));
-#define oxModelFriend(modelName) friend constexpr ox::Error model(auto*, ox::CommonPtrWith<modelName> auto*) noexcept
+#define oxModelFriend(modelName) friend constexpr ox::Error model(auto *io, ox::CommonPtrWith<modelName> auto *o) noexcept

deps/ox/src/ox/std/array.hpp

@@ -41,7 +41,7 @@ class Array {
 
 		constexpr Array(Array &&other) noexcept;
 
-		~Array() = default;
+		constexpr ~Array() = default;
 
 		constexpr iterator<> begin() noexcept {
 			return iterator<>(&m_items[0], 0, ArraySize);
@@ -81,8 +81,10 @@ class Array {
 
 		constexpr Array &operator=(Array &&other) noexcept;
 
+		[[nodiscard]]
 		constexpr T &operator[](std::size_t i) noexcept;
 
+		[[nodiscard]]
 		constexpr const T &operator[](std::size_t i) const noexcept;
 
 		[[nodiscard]]

deps/ox/src/ox/std/assert.hpp

@@ -36,8 +36,8 @@ constexpr void assertFunc(CRStringView file, int line, bool pass, [[maybe_unused
 	if (!pass) {
 		if (!std::is_constant_evaluated()) {
 #ifdef OX_USE_STDLIB
-			oxErrf("\n\033[31;1;1mASSERT FAILURE:\033[0m [{}:{}]: {}\n", file, line, msg);
+			auto output = sfmt("\n\033[31;1;1mASSERT FAILURE:\033[0m [{}:{}]: {}\n", file, line, msg);
-			printStackTrace(2);
+			output += genStackTrace(2);
 			oxTracef("assert", "Failed assert: {} ({}) [{}:{}]", msg, assertTxt, file, line);
 			std::abort();
 #else
@@ -55,15 +55,16 @@ constexpr void assertFunc(CRStringView file, int line, const Error &err, CRStrin
 	if (err) {
 		if (!std::is_constant_evaluated()) {
 #if defined(OX_USE_STDLIB)
-			oxErrf("\n\033[31;1;1mASSERT FAILURE:\033[0m [{}:{}]: {}\n", file, line, assertMsg);
+			auto msg = sfmt("\n\033[31;1;1mASSERT FAILURE:\033[0m [{}:{}]: {}\n", file, line, assertMsg);
 			if (err.msg) {
-				oxErrf("\tError Message:\t{}\n", err.msg);
+				msg += sfmt("\tError Message:\t{}\n", err.msg);
 			}
-			oxErrf("\tError Code:\t{}\n", static_cast<ErrorCode>(err));
+			msg += sfmt("\tError Code:\t{}\n", static_cast<ErrorCode>(err));
 			if (err.file != nullptr) {
-				oxErrf("\tError Location:\t{}:{}\n", err.file, err.line);
+				msg += sfmt("\tError Location:\t{}:{}\n", err.file, err.line);
 			}
-			printStackTrace(2);
+			msg += genStackTrace(2);
+			oxErr(msg);
 			oxTracef("assert", "Failed assert: {} [{}:{}]", assertMsg, file, line);
 			std::abort();
 #else

deps/ox/src/ox/std/defer.hpp

@@ -8,8 +8,6 @@
 
 #pragma once
 
-#include "error.hpp"
-
 namespace ox {
 
 template<typename T>
@@ -18,13 +16,12 @@ class Defer {
 		T m_deferredFunc;
 
 	public:
-		Defer(T deferredFunc) {
+		constexpr Defer(T deferredFunc) noexcept: m_deferredFunc(deferredFunc) {
-			m_deferredFunc = deferredFunc;
 		}
 
 		Defer(const Defer&) = delete;
 
-		~Defer() {
+		constexpr ~Defer() {
 			m_deferredFunc();
 		}
 
@@ -34,4 +31,4 @@ class Defer {
 
 }
 
-#define oxDefer ox::Defer oxConcat(oxDefer_, __LINE__) = [&]
+#define oxDefer ox::Defer const oxConcat(oxDefer_, __LINE__) =

deps/ox/src/ox/std/error.hpp

@@ -165,21 +165,24 @@ struct [[nodiscard]] Result {
 		return error == 0;
 	}
 
-	constexpr Error copyTo(type &val) const& noexcept {
+	template<typename U>
+	constexpr Error copyTo(U &val) const& noexcept {
 		if (!error) [[likely]] {
 			val = value;
 		}
 		return error;
 	}
 
-	constexpr Error copyTo(type &val) && noexcept {
+	template<typename U>
+	constexpr Error copyTo(U &val) && noexcept {
 		if (!error) [[likely]] {
 			val = std::move(value);
 		}
 		return error;
 	}
 
-	constexpr Error moveTo(type &val) noexcept {
+	template<typename U>
+	constexpr Error moveTo(U &val) noexcept {
 		if (!error) [[likely]] {
 			val = std::move(value);
 		}

deps/ox/src/ox/std/stacktrace.cpp

@@ -57,6 +57,28 @@ static auto symbolicate([[maybe_unused]]void **frames,
 }
 #endif // defined(OX_USE_STDLIB) && __has_include(<unistd.h>)
 
+ox::String genStackTrace([[maybe_unused]]unsigned shave) noexcept {
+	ox::String out;
+#if defined(OX_USE_STDLIB) && __has_include(<unistd.h>) && __has_include(<execinfo.h>)
+	constexpr auto FrameCnt = 100;
+	Vector<void*, FrameCnt> frames(FrameCnt);
+#ifdef OX_OS_FreeBSD
+	using FrameCnt_t = unsigned;
+#else
+	using FrameCnt_t = signed;
+#endif
+	frames.resize(static_cast<std::size_t>(backtrace(frames.data(), static_cast<FrameCnt_t>(frames.size()))));
+	if (frames.size() - shave > 2) {
+		const auto symbolicatedStacktrace = symbolicate(frames.data() + shave, frames.size() - shave, "\t");
+		out+= "Stacktrace:\n";
+		for (const auto &s : symbolicatedStacktrace) {
+			out += sfmt("\t{}\n", s);
+		}
+	}
+#endif
+	return out;
+}
+
 void printStackTrace([[maybe_unused]]unsigned shave) noexcept {
 #if defined(OX_USE_STDLIB) && __has_include(<unistd.h>) && __has_include(<execinfo.h>)
 	constexpr auto FrameCnt = 100;

deps/ox/src/ox/std/stacktrace.hpp

@@ -8,8 +8,13 @@
 
 #pragma once
 
+#include "string.hpp"
+
 namespace ox {
 
+[[nodiscard]]
+ox::String genStackTrace([[maybe_unused]]unsigned shave) noexcept;
+
 /**
  * Prints a stack trace to stderr.
  *

deps/ox/src/ox/std/tracehook.cpp

@@ -65,23 +65,28 @@ void oxTraceInitHook() {
 void oxTraceHook([[maybe_unused]] const char *file, [[maybe_unused]] int line,
                  [[maybe_unused]] const char *ch, [[maybe_unused]] const char *msg) {
 #if defined(OX_USE_STDLIB)
+	auto const chv = ox::StringView{ch};
 	if (OxPrintTrace) {
+		auto m = std::string_view{msg};
+		if (m.ends_with('\n')) {
+			m = std::string_view{msg, m.size() - 1};
+		}
 		std::cout << std::setw(53) << std::left << ch << "| ";
-		std::cout << std::setw(65) << std::left << msg << '|';
+		std::cout << std::setw(65) << std::left << m << '|';
 		std::cout << " " << file << ':' << line << "\n";
-	} else if (ox::strcmp(ch, "debug") == 0 || ox::strcmp(ch, "info") == 0) {
+	} else if (chv == "debug" || chv == "info") {
 		printf("%s\n", msg);
-		fflush(stdout);
+		std::ignore = fflush(stdout);
-	} else if (ox::strcmp(ch, "stdout") == 0) {
+	} else if (chv == "stdout") {
 		printf("%s", msg);
-		fflush(stdout);
+		std::ignore = fflush(stdout);
-	} else if (ox::strcmp(ch, "stderr") == 0) {
+	} else if (chv == "stderr") {
-		printf("%s", msg);
+		std::ignore = fprintf(stderr, "%s", msg);
-		fflush(stdout);
+		std::ignore = fflush(stderr);
-	} else if (ox::strcmp(ch, "error") == 0) {
+	} else if (chv == "error") {
 		//std::cerr << "\033[31;1;1mERROR:\033[0m (" << file << ':' << line << "): " << msg << '\n';
-		fprintf(stderr, "\033[31;1;1mERROR:\033[0m (%s:%d): %s\n", file, line, msg);
+		std::ignore = fprintf(stderr, "\033[31;1;1mERROR:\033[0m (%s:%d): %s\n", file, line, msg);
-		fflush(stderr);
+		std::ignore = fflush(stderr);
 	}
 #else
 	if (ox::strcmp(ch, "info") == 0) {

deps/ox/src/ox/std/vector.hpp

@@ -222,8 +222,10 @@ class Vector: detail::VectorAllocator<T, Allocator, SmallVectorSize> {
 
 		constexpr Vector &operator=(Vector &&other) noexcept;
 
+		[[nodiscard]]
 		constexpr T &operator[](std::size_t i) noexcept;
 
+		[[nodiscard]]
 		constexpr const T &operator[](std::size_t i) const noexcept;
 
 		[[nodiscard]]

scripts/pkg-gba.py

@@ -28,8 +28,12 @@ project_name = sys.argv[2]
 bin = f'./build/{host_env}-{current_build}/bin/'
 project_bin = f'build/gba-release/bin/{project_name}.bin'
 project_gba = f'{project_name}.gba'
+project_manifest = f'{project_name}-manifest.json'
 
 shutil.copyfile(project_bin, project_gba)
 subprocess.run([
-    f'{bin}/{project_name}-pack', '-src', project_dir, '-rom-bin', project_gba])
+    f'{bin}/{project_name}-pack',
+        '-src', project_dir,
+        '-rom-bin', project_gba,
+        '-manifest', project_manifest])
 subprocess.run(['gbafix', project_gba])

src/nostalgia/modules/core/include/nostalgia/core/gfx.hpp

@@ -139,7 +139,15 @@ ox::Error loadBgTileSheet(
 		Context &ctx,
 		unsigned cbb,
 		CompactTileSheet const&ts,
-		ox::Optional<unsigned> const&paletteBank) noexcept;
+		size_t dstTileIdx,
+		size_t srcTileIdx,
+		size_t tileCnt) noexcept;
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned cbb,
+		CompactTileSheet const&ts,
+		ox::Optional<unsigned> const&paletteBank = {}) noexcept;
 
 ox::Error loadBgTileSheet(
 		Context &ctx,

src/nostalgia/modules/core/include/nostalgia/core/tilesheet.hpp

@@ -31,6 +31,12 @@ struct TileSheetV1 {
 	ox::Vector<uint8_t> pixels = {};
 };
 
+[[nodiscard]]
+constexpr bool valid(TileSheetV1 const&ts) noexcept {
+	return ts.bpp == 4 || ts.bpp == 8;
+}
+
+
 struct TileSheetV2 {
 	using SubSheetIdx = ox::Vector<std::size_t, 4>;
 
@@ -43,8 +49,8 @@ struct TileSheetV2 {
 		ox::Vector<SubSheet> subsheets;
 		ox::Vector<uint8_t> pixels;
 		constexpr SubSheet() noexcept = default;
-		constexpr SubSheet(ox::CRStringView pName, int pColumns, int pRows, int bpp) noexcept:
+		constexpr SubSheet(ox::StringParam pName, int pColumns, int pRows, int bpp) noexcept:
-			name(pName),
+			name(std::move(pName)),
 			columns(pColumns),
 			rows(pRows),
 			pixels(static_cast<size_t>(columns * rows * PixelsPerTile) / (bpp == 4 ? 2u : 1u)) {
@@ -59,6 +65,12 @@ struct TileSheetV2 {
 
 };
 
+[[nodiscard]]
+constexpr bool valid(TileSheetV2 const&ts) noexcept {
+	return ts.bpp == 4 || ts.bpp == 8;
+}
+
+
 using SubSheetId = int32_t;
 
 struct TileSheetV3 {
@@ -74,14 +86,14 @@ struct TileSheetV3 {
 		ox::Vector<SubSheet> subsheets;
 		ox::Vector<uint8_t> pixels;
 		constexpr SubSheet() noexcept = default;
-		inline SubSheet(
+		SubSheet(
 				SubSheetId pId,
-				ox::CRStringView pName,
+				ox::StringParam pName,
 				int pColumns,
 				int pRows,
 				int bpp) noexcept:
 				id(pId),
-				name(pName),
+				name(std::move(pName)),
 				columns(pColumns),
 				rows(pRows),
 				pixels(static_cast<std::size_t>(columns * rows * PixelsPerTile) / (bpp == 4 ? 2u : 1u)) {
@@ -98,7 +110,13 @@ struct TileSheetV3 {
 
 };
 
-struct TileSheet {
+[[nodiscard]]
+constexpr bool valid(TileSheetV3 const&ts) noexcept {
+	return ts.bpp == 4 || ts.bpp == 8;
+}
+
+
+struct TileSheetV4 {
 	using SubSheetIdx = ox::Vector<std::size_t, 4>;
 
 	struct SubSheet {
@@ -112,26 +130,26 @@ struct TileSheet {
 		ox::Vector<uint8_t> pixels;
 
 		constexpr SubSheet() noexcept = default;
-		inline SubSheet(
+		SubSheet(
 				SubSheetId pId,
-				ox::CRStringView pName,
+				ox::StringParam pName,
 				int pColumns,
 				int pRows,
 				int bpp) noexcept:
 				id(pId),
-				name(pName),
+				name(std::move(pName)),
 				columns(pColumns),
 				rows(pRows),
 				pixels(static_cast<std::size_t>(columns * rows * PixelsPerTile) / (bpp == 4 ? 2u : 1u)) {
 		}
-		inline SubSheet(
+		SubSheet(
 				SubSheetId pId,
-				ox::CRStringView pName,
+				ox::StringParam pName,
 				int pColumns,
 				int pRows,
 				ox::Vector<uint8_t> pPixels) noexcept:
 				id(pId),
-				name(pName),
+				name(std::move(pName)),
 				columns(pColumns),
 				rows(pRows),
 				pixels(std::move(pPixels)) {
@@ -151,10 +169,18 @@ struct TileSheet {
 	ox::FileAddress defaultPalette;
 	SubSheet subsheet{0, "Root", 1, 1, bpp};
 
-	constexpr TileSheet() noexcept = default;
+	constexpr TileSheetV4() noexcept = default;
 
 };
 
+[[nodiscard]]
+constexpr bool valid(TileSheetV4 const&ts) noexcept {
+	return ts.bpp == 4 || ts.bpp == 8;
+}
+
+
+using TileSheet = TileSheetV4;
+
 [[nodiscard]]
 std::size_t idx(TileSheet::SubSheet const&ss, ox::Point const&pt) noexcept;
 
@@ -286,12 +312,11 @@ ox::Result<unsigned> getTileOffset(TileSheet const&ts, ox::CRStringView pNamePat
 
 ox::Result<ox::StringView> getNameFor(TileSheet::SubSheet const&ss, SubSheetId pId) noexcept;
 
-ox::Result<ox::StringView> getNameFor(TileSheet const&ss, SubSheetId pId) noexcept;
+ox::Result<ox::StringView> getNameFor(TileSheet const&ts, SubSheetId pId) noexcept;
 
 [[nodiscard]]
 ox::Vector<uint8_t> pixels(TileSheet &ts) noexcept;
 
-using TileSheetV4 = TileSheet;
 
 struct CompactTileSheetV1 {
 	static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.CompactTileSheet";
@@ -302,8 +327,34 @@ struct CompactTileSheetV1 {
 	ox::Vector<uint8_t> pixels;
 };
 
+[[nodiscard]]
+constexpr bool valid(CompactTileSheetV1 const&ts) noexcept {
+	return ts.bpp == 4 || ts.bpp == 8;
+}
+
+
 using CompactTileSheet = CompactTileSheetV1;
 
+[[nodiscard]]
+uint8_t getPixel4Bpp(
+		CompactTileSheet const&ts,
+		size_t idx) noexcept;
+
+[[nodiscard]]
+uint8_t getPixel8Bpp(
+		CompactTileSheet const&ts,
+		size_t idx) noexcept;
+
+[[nodiscard]]
+ox::Pair<uint8_t> get2Pixels4Bpp(
+		CompactTileSheet const&ts,
+		size_t idx) noexcept;
+
+[[nodiscard]]
+ox::Pair<uint8_t> get2Pixels8Bpp(
+		CompactTileSheet const&ts,
+		size_t idx) noexcept;
+
 oxModelBegin(TileSheetV1)
 	oxModelField(bpp)
 	oxModelField(rows)

src/nostalgia/modules/core/src/gba/gfx.cpp

@@ -3,7 +3,6 @@
  */
 
 #include <ox/fs/fs.hpp>
-#include <ox/mc/mc.hpp>
 #include <ox/std/array.hpp>
 
 #include <teagba/addresses.hpp>
@@ -11,9 +10,7 @@
 #include <teagba/registers.hpp>
 
 #include <keel/keel.hpp>
-#include <turbine/turbine.hpp>
 
-#include <nostalgia/core/color.hpp>
 #include <nostalgia/core/context.hpp>
 #include <nostalgia/core/gfx.hpp>
 #include <nostalgia/core/tilesheet.hpp>
@@ -22,7 +19,7 @@
 
 namespace nostalgia::core {
 
-constexpr auto SpriteCount = 128;
+static constexpr auto SpriteCount = 128;
 
 ox::Error initGfx(Context&, InitParams const&) noexcept {
 	for (auto bgCtl = &REG_BG0CTL; bgCtl <= &REG_BG3CTL; bgCtl += 2) {
@@ -81,7 +78,7 @@ ox::Error loadSpritePalette(
 
 static ox::Error loadTileSheetSet(
 		Context &ctx,
-		uint16_t *tileMapTargetMem,
+		ox::Span<uint16_t> tileMapTargetMem,
 		TileSheetSet const&set) noexcept {
 	size_t tileWriteIdx = 0;
 	size_t const bppMod = set.bpp == 4;
@@ -106,6 +103,34 @@ static ox::Error loadTileSheetSet(
 	return {};
 }
 
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned const cbb,
+		CompactTileSheet const&ts,
+		size_t const dstTileIdx,
+		size_t const srcTileIdx,
+		size_t const tileCnt) noexcept {
+	size_t const bppMod = ts.bpp == 4;
+	size_t const bytesPerTile = PixelsPerTile >> bppMod;
+	auto const pixCnt = tileCnt * bytesPerTile;
+	auto const srcPxIdx = srcTileIdx * bytesPerTile;
+	auto const dstPxIdx = (dstTileIdx * bytesPerTile) / 2;
+	for (size_t i = 0; i < pixCnt; ++i) {
+		auto const srcIdx = srcPxIdx + i * 2;
+		auto const p1 = static_cast<uint16_t>(ts.pixels[srcIdx]);
+		auto const p2 = static_cast<uint16_t>(ts.pixels[srcIdx + 1]);
+		MEM_BG_TILES[cbb][dstPxIdx + i] = static_cast<uint16_t>(p1 | (p2 << 8));
+	}
+	// update bpp of all bgs with the updated cbb
+	auto const bpp = ctx.cbbData[cbb].bpp;
+	teagba::iterateBgCtl([bpp, cbb](volatile BgCtl &bgCtl) {
+		if (teagba::bgCbb(bgCtl) == cbb) {
+			teagba::bgSetBpp(bgCtl, bpp);
+		}
+	});
+	return {};
+}
+
 ox::Error loadBgTileSheet(
 		Context &ctx,
 		unsigned cbb,
@@ -142,10 +167,10 @@ ox::Error loadBgTileSheet(
 
 ox::Error loadBgTileSheet(
 		Context &ctx,
-		unsigned cbb,
+		unsigned const cbb,
 		TileSheetSet const&set) noexcept {
 	auto const bpp = static_cast<unsigned>(set.bpp);
-	oxReturnError(loadTileSheetSet(ctx, MEM_BG_TILES[cbb].data(), set));
+	oxReturnError(loadTileSheetSet(ctx, MEM_BG_TILES[cbb], set));
 	// update bpp of all bgs with the updated cbb
 	ctx.cbbData[cbb].bpp = bpp;
 	teagba::iterateBgCtl([bpp, cbb](volatile BgCtl &bgCtl) {
@@ -193,7 +218,7 @@ ox::Error loadSpriteTileSheet(
 		Context &ctx,
 		TileSheetSet const&set) noexcept {
 	auto const bpp = static_cast<unsigned>(set.bpp);
-	oxReturnError(loadTileSheetSet(ctx, MEM_SPRITE_TILES, set));
+	oxReturnError(loadTileSheetSet(ctx, {MEM_SPRITE_TILES, 32 * ox::units::KB}, set));
 	setSpritesBpp(bpp);
 	return {};
 }

src/nostalgia/modules/core/src/opengl/gfx.cpp

@@ -22,8 +22,8 @@ namespace nostalgia::core {
 
 namespace renderer {
 
-constexpr auto Scale = 1;
+static constexpr auto Scale = 1;
-constexpr auto PriorityScale = 0.01f;
+static constexpr auto PriorityScale = 0.01f;
 
 Drawer::Drawer(Context &ctx) noexcept: m_ctx(ctx) {}
 
@@ -31,7 +31,7 @@ void Drawer::draw(turbine::Context &tctx) noexcept {
 	core::gl::draw(m_ctx, turbine::getScreenSize(tctx));
 }
 
-constexpr ox::CStringView bgvshadTmpl = R"glsl(
+static constexpr ox::CStringView bgvshadTmpl = R"glsl(
 	{}
 	in vec2 vTexCoord;
 	in vec3 vPosition;
@@ -55,7 +55,7 @@ constexpr ox::CStringView bgvshadTmpl = R"glsl(
 		fPalOffset = vPalOffset;
 	})glsl";
 
-constexpr ox::CStringView bgfshadTmpl = R"glsl(
+static constexpr ox::CStringView bgfshadTmpl = R"glsl(
 	{}
 	out vec4 outColor;
 	in float fPalOffset;
@@ -71,7 +71,7 @@ constexpr ox::CStringView bgfshadTmpl = R"glsl(
 		}
 	})glsl";
 
-constexpr ox::CStringView spritevshadTmpl = R"glsl(
+static constexpr ox::CStringView spritevshadTmpl = R"glsl(
 	{}
 	in float vEnabled;
 	in vec3 vPosition;
@@ -90,7 +90,7 @@ constexpr ox::CStringView spritevshadTmpl = R"glsl(
 		fTexCoord = vTexCoord * vec2(1, vTileHeight);
 	})glsl";
 
-constexpr ox::CStringView spritefshadTmpl = R"glsl(
+static constexpr ox::CStringView spritefshadTmpl = R"glsl(
 	{}
 	out vec4 outColor;
 	in vec2 fTexCoord;
@@ -279,7 +279,7 @@ static void initBackgroundBufferset(
 static glutils::GLTexture createTexture(
 		GLsizei w,
 		GLsizei h,
-		const void *pixels) noexcept {
+		void const*pixels) noexcept {
 	GLuint texId = 0;
 	glGenTextures(1, &texId);
 	glutils::GLTexture tex(texId);
@@ -492,22 +492,22 @@ struct TileSheetData {
 };
 
 static ox::Result<TileSheetData> normalizeTileSheet(
-		CompactTileSheet const&tilesheet) noexcept {
+		CompactTileSheet const&ts) noexcept {
-	const uint_t bytesPerTile = tilesheet.bpp == 8 ? PixelsPerTile : PixelsPerTile / 2;
+	const uint_t bytesPerTile = ts.bpp == 8 ? PixelsPerTile : PixelsPerTile / 2;
-	const auto tiles = tilesheet.pixels.size() / bytesPerTile;
+	const auto tiles = ts.pixels.size() / bytesPerTile;
 	constexpr int width = 8;
 	const int height = 8 * static_cast<int>(tiles);
 	ox::Vector<uint32_t> pixels;
 	if (bytesPerTile == 64) { // 8 BPP
-		pixels.resize(tilesheet.pixels.size());
+		pixels.resize(ts.pixels.size());
-		for (std::size_t i = 0; i < tilesheet.pixels.size(); ++i) {
+		for (std::size_t i = 0; i < ts.pixels.size(); ++i) {
-			pixels[i] = tilesheet.pixels[i];
+			pixels[i] = ts.pixels[i];
 		}
 	} else { // 4 BPP
-		pixels.resize(tilesheet.pixels.size() * 2);
+		pixels.resize(ts.pixels.size() * 2);
-		for (std::size_t i = 0; i < tilesheet.pixels.size(); ++i) {
+		for (std::size_t i = 0; i < ts.pixels.size(); ++i) {
-			pixels[i * 2 + 0] = tilesheet.pixels[i] & 0xF;
+			pixels[i * 2 + 0] = ts.pixels[i] & 0xF;
-			pixels[i * 2 + 1] = tilesheet.pixels[i] >> 4;
+			pixels[i * 2 + 1] = ts.pixels[i] >> 4;
 		}
 	}
 	return TileSheetData{std::move(pixels), width, height};
@@ -572,14 +572,58 @@ static ox::Result<TileSheetData> buildSetTsd(
 	return setTsd;
 }
 
+static void copyPixels(
+		CompactTileSheet const&ts,
+		uint32_t *dst,
+		size_t const srcPxIdx,
+		size_t pxlCnt) noexcept {
+	if (ts.bpp == 4) {
+		for (size_t i = 0; i < pxlCnt; i += 2) {
+			auto const [a, b] = get2Pixels4Bpp(ts, i + srcPxIdx);
+			*(dst++) = a;
+			*(dst++) = b;
+		}
+	} else if (ts.bpp == 8) {
+		for (size_t i = 0; i < pxlCnt; i += 2) {
+			auto const [a, b] = get2Pixels8Bpp(ts, i + srcPxIdx);
+			*(dst++) = a;
+			*(dst++) = b;
+		}
+	}
+}
+
+ox::Error loadBgTileSheet(
+		Context &ctx,
+		unsigned const cbb,
+		CompactTileSheet const&ts,
+		size_t const dstTileIdx,
+		size_t const srcTileIdx,
+		size_t const tileCnt) noexcept {
+	auto &cbbPxls = ctx.cbbs[cbb].pixels;
+	auto const bytesPerTile = static_cast<uint64_t>(PixelsPerTile / (1 + (ts.bpp == 4)));
+	auto const pxlCnt = tileCnt * PixelsPerTile;
+	auto const srcPxIdx = srcTileIdx * PixelsPerTile;
+	auto const dstPxIdx = dstTileIdx * PixelsPerTile;
+	if (dstPxIdx + pxlCnt >= cbbPxls.size()) {
+		return OxError(1, "video mem dst overflow");
+	}
+	auto const dst = &cbbPxls[dstPxIdx];
+	copyPixels(ts, dst, srcPxIdx, pxlCnt);
+	auto const cbbTiles = cbbPxls.size() / bytesPerTile;
+	int constexpr cbbWidth = 8;
+	int const cbbHeight = 8 * static_cast<int>(cbbTiles);
+	ctx.cbbs[cbb].tex = renderer::createTexture(cbbWidth, cbbHeight, cbbPxls.data());
+	return {};
+}
+
 ox::Error loadBgTileSheet(
 		Context &ctx,
 		uint_t cbb,
 		CompactTileSheet const&ts,
 		ox::Optional<unsigned> const&paletteBank) noexcept {
-	oxRequire(tsd, normalizeTileSheet(ts));
+	auto const bytesPerTile = static_cast<uint64_t>(PixelsPerTile / (1 + (ts.bpp == 4)));
-	oxTracef("nostalgia.core.gfx.gl", "loadBgTexture: { cbbIdx: {}, w: {}, h: {} }", cbb, tsd.width, tsd.height);
+	auto const tiles = ts.pixels.size() / bytesPerTile;
-	ctx.cbbs[cbb].tex = renderer::createTexture(tsd.width, tsd.height, tsd.pixels.data());
+	oxReturnError(loadBgTileSheet(ctx, cbb, ts, 0, 0, tiles));
 	if (paletteBank.has_value() && ts.defaultPalette) {
 		oxReturnError(loadBgPalette(ctx, *paletteBank, ts.defaultPalette));
 	}

src/nostalgia/modules/core/src/opengl/gfx.hpp

@@ -28,6 +28,7 @@ constexpr uint64_t SpriteVertexEboLength = 6;
 
 struct CBB: public glutils::BufferSet {
 	bool updated = false;
+	ox::Array<uint32_t, 32768> pixels;
 	constexpr CBB() noexcept {
 		vertices.resize(TileCount * BgVertexVboLength);
 		elements.resize(TileCount * BgVertexEboLength);

src/nostalgia/modules/core/src/studio/tilesheeteditor/commands/cutpastecommand.hpp

@@ -10,6 +10,8 @@
 
 namespace nostalgia::core {
 
+oxModelFwdDecl(class TileSheetClipboard);
+
 class TileSheetClipboard: public turbine::ClipboardObject<TileSheetClipboard> {
 	public:
 		static constexpr auto TypeName = "net.drinkingtea.nostalgia.core.studio.TileSheetClipboard";

src/nostalgia/modules/core/src/studio/tilesheeteditor/tilesheeteditor-imgui.cpp

@@ -312,9 +312,8 @@ void TileSheetEditorImGui::drawSubsheetSelector(
 		for (auto i = 0ul; auto &child : subsheet.subsheets) {
 			path.push_back(i);
 			ImGui::PushID(static_cast<int>(i));
-			ImGui::Indent(-indentReduce);
+			ig::IndentStackItem	const indentStackItem{-indentReduce};
 			drawSubsheetSelector(child, path);
-			ImGui::Indent(indentReduce);
 			ImGui::PopID();
 			path.pop_back();
 			++i;
@@ -440,7 +439,7 @@ void TileSheetEditorImGui::drawPaletteSelector() noexcept {
 	}
 	auto const pages = m_model.pal().pages.size();
 	if (pages > 1) {
-		ImGui::Indent(20);
+		ig::IndentStackItem	const indentStackItem{20};
 		using Str = ox::IString<55>;
 		auto numStr = ox::sfmt<Str>(
 			"{} - {}", m_model.palettePage() + 1, m_model.pal().pages[m_model.palettePage()].name);
@@ -458,7 +457,6 @@ void TileSheetEditorImGui::drawPaletteSelector() noexcept {
 			}
 			ImGui::EndCombo();
 		}
-		ImGui::Indent(-20);
 	}
 	// header
 	if (ImGui::BeginTable(

src/nostalgia/modules/core/src/tilesheet.cpp

@@ -280,7 +280,7 @@ uint8_t getPixel4Bpp(
 		TileSheet::SubSheetIdx const&subsheetIdx) noexcept {
 	oxAssert(ts.bpp == 4, "TileSheet::getPixel4Bpp: wrong bpp");
 	auto &s = getSubSheet(ts, subsheetIdx);
-	const auto idx = ptToIdx(pt, s.columns);
+	auto const idx = ptToIdx(pt, s.columns);
 	return getPixel4Bpp(s, idx);
 }
 
@@ -290,10 +290,49 @@ uint8_t getPixel8Bpp(
 		TileSheet::SubSheetIdx const&subsheetIdx) noexcept {
 	oxAssert(ts.bpp == 8, "TileSheet::getPixel8Bpp: wrong bpp");
 	auto &s = getSubSheet(ts, subsheetIdx);
-	const auto idx = ptToIdx(pt, s.columns);
+	auto const idx = ptToIdx(pt, s.columns);
 	return getPixel8Bpp(s, idx);
 }
 
+uint8_t getPixel4Bpp(
+		CompactTileSheet const&ts,
+		size_t const idx) noexcept {
+	oxAssert(ts.bpp == 4, "TileSheet::getPixel4Bpp: wrong bpp");
+	if (idx & 1) {
+		return ts.pixels[idx / 2] >> 4;
+	} else {
+		return ts.pixels[idx / 2] & 0b0000'1111;
+	}
+}
+
+uint8_t getPixel8Bpp(
+		CompactTileSheet const&ts,
+		size_t const idx) noexcept {
+	oxAssert(ts.bpp == 8, "TileSheet::getPixel8Bpp: wrong bpp");
+	return ts.pixels[idx];
+}
+
+ox::Pair<uint8_t> get2Pixels4Bpp(
+		CompactTileSheet const&ts,
+		size_t const idx) noexcept {
+	oxAssert(ts.bpp == 4, "TileSheet::getPixel4Bpp: wrong bpp");
+	auto const out = ts.pixels[idx / 2];
+	return {
+		static_cast<uint8_t>(out & 0x0f),
+		static_cast<uint8_t>(out >> 4),
+	};
+}
+
+ox::Pair<uint8_t> get2Pixels8Bpp(
+		CompactTileSheet const&ts,
+		size_t const idx) noexcept {
+	oxAssert(ts.bpp == 8, "TileSheet::getPixel8Bpp: wrong bpp");
+	return {
+		static_cast<uint8_t>(ts.pixels[idx]),
+		static_cast<uint8_t>(ts.pixels[idx + 1]),
+	};
+}
+
 static ox::Result<SubSheetId> getIdFor(
 		TileSheet::SubSheet const&ss,
 		ox::SpanView<ox::StringView> const&pNamePath,

src/olympic/keel/include/keel/assetmanager.hpp

@@ -14,6 +14,8 @@
 #include <ox/std/hashmap.hpp>
 #include <ox/std/utility.hpp>
 
+#include "validation.hpp"
+
 namespace keel {
 
 class AssetManager;
@@ -21,17 +23,6 @@ class AssetManager;
 template<typename T>
 class AssetRef;
 
-
-[[nodiscard]]
-constexpr bool valid(auto const&) noexcept {
-	return true;
-}
-
-[[nodiscard]]
-constexpr ox::Error repair(auto const&) noexcept {
-	return {};
-}
-
 #ifndef OX_BARE_METAL
 template<typename T>
 class AssetContainer {
@@ -226,9 +217,7 @@ class AssetManager {
 				ox::Result<AssetRef<T>> loadAsset(ox::StringView const assetId) noexcept {
 					auto &p = m_cache[assetId];
 					oxRequireM(obj, m_loader(assetId));
-					if (!valid(obj) && repair(obj)) {
+					oxReturnError(ensureValid(obj));
-						return OxError(1, "asset is invalid state and could not be repaired");
-					}
 					if (!p) {
 						p = ox::make_unique<AssetContainer<T>>(std::move(obj));
 					} else {

src/olympic/keel/include/keel/media.hpp

@@ -57,8 +57,6 @@ ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::CRStringView uuid) noex
 
 ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::UUID const&uuid) noexcept;
 
-ox::Error performPackTransforms(Context &ctx, ox::Buffer &clawData) noexcept;
-
 #ifndef OX_BARE_METAL
 
 namespace detail {

src/olympic/keel/include/keel/pack.hpp

@@ -12,6 +12,31 @@
 
 namespace keel {
 
+struct ManifestEntry {
+	static constexpr auto TypeName = "net.drinkingtea.keel.ManifestEntry";
+	static constexpr auto TypeVersion = 1;
+	uint64_t inode{};
+	bool preloaded{};
+	ox::String type;
+};
+
+oxModelBegin(ManifestEntry)
+	oxModelField(inode)
+	oxModelField(preloaded)
+	oxModelField(type)
+oxModelEnd()
+
+struct Manifest {
+	static constexpr auto TypeName = "net.drinkingtea.keel.Manifest";
+	static constexpr auto TypeVersion = 1;
+	ox::HashMap<ox::String, ManifestEntry> files;
+};
+
+oxModelBegin(Manifest)
+	oxModelField(files)
+oxModelEnd()
+
+
 class Context;
 
 struct GbaPlatSpec {
@@ -113,6 +138,7 @@ ox::Error preloadObj(
 // transformations need to be done after the copy to the new FS is complete
 template<typename PlatSpec>
 ox::Error preloadDir(
+		Manifest &manifest,
 		ox::TypeStore &ts,
 		ox::FileSystem &romFs,
 		ox::Preloader<PlatSpec> &pl,
@@ -125,13 +151,14 @@ ox::Error preloadDir(
 		oxRequire(stat, romFs.stat(filePath));
 		if (stat.fileType == ox::FileType::Directory) {
 			auto const dir = ox::sfmt("{}{}/", path, name);
-			oxReturnError(preloadDir(ts, romFs, pl, dir));
+			oxReturnError(preloadDir(manifest, ts, romFs, pl, dir));
 		} else {
 			auto const err = preloadObj(ts, romFs, pl, filePath);
 			if (err) {
 				oxErrf("\033[31;1;1mCould not preload {}:\n\t{}\n", filePath, toStr(err));
 				return err;
 			}
+			manifest.files[filePath].preloaded = true;
 		}
 	}
 	return {};
@@ -162,11 +189,15 @@ ox::Error appendBinary(ox::Buffer &binBuff, ox::SpanView<char> const&fsBuff, ox:
 }
 
 template<typename PlatSpec>
-ox::Error preload(ox::TypeStore &ts, ox::FileSystem &src, ox::Preloader<PlatSpec> &pl) noexcept {
+ox::Error preload(
+		Manifest &manifest,
+		ox::TypeStore &ts,
+		ox::FileSystem &src,
+		ox::Preloader<PlatSpec> &pl) noexcept {
 	oxOut("Preloading\n");
-	return detail::preloadDir(ts, src, pl, "/");
+	return detail::preloadDir(manifest, ts, src, pl, "/");
 }
 
-ox::Error pack(keel::Context &ctx, ox::TypeStore &ts, ox::FileSystem &dest) noexcept;
+ox::Error pack(Manifest &manifest, keel::Context &ctx, ox::TypeStore &ts, ox::FileSystem &dest) noexcept;
 
 }

src/olympic/keel/include/keel/typeconv.hpp

@@ -51,27 +51,27 @@ constexpr T &wrapCast(Wrap &ptr) noexcept {
 
 class BaseConverter {
 	public:
-		virtual ~BaseConverter() noexcept = default;
+		constexpr virtual ~BaseConverter() noexcept = default;
 
 		[[nodiscard]]
-		virtual ox::StringView srcTypeName() const noexcept = 0;
+		constexpr virtual ox::StringView srcTypeName() const noexcept = 0;
 
 		[[nodiscard]]
-		virtual int srcTypeVersion() const noexcept = 0;
+		constexpr virtual int srcTypeVersion() const noexcept = 0;
 
 		[[nodiscard]]
-		virtual bool srcMatches(ox::CRStringView pSrcTypeName, int pSrcTypeVersion) const noexcept = 0;
+		constexpr virtual bool srcMatches(ox::CRStringView pSrcTypeName, int pSrcTypeVersion) const noexcept = 0;
 
 		[[nodiscard]]
-		virtual bool dstMatches(ox::CRStringView dstTypeName, int dstTypeVersion) const noexcept = 0;
+		constexpr virtual bool dstMatches(ox::CRStringView dstTypeName, int dstTypeVersion) const noexcept = 0;
 
 		virtual ox::Result<ox::UPtr<Wrap>> convertPtrToPtr(keel::Context &ctx, Wrap &src) const noexcept = 0;
 
 		virtual ox::Result<ox::UPtr<Wrap>> convertBuffToPtr(
-				keel::Context &ctx, ox::Buffer const&srcBuff) const noexcept = 0;
+				keel::Context &ctx, ox::BufferView const&srcBuff) const noexcept = 0;
 
 		[[nodiscard]]
-		inline bool matches(
+		constexpr bool matches(
 				ox::CRStringView srcTypeName, int srcTypeVersion,
 				ox::CRStringView dstTypeName, int dstTypeVersion) const noexcept {
 			return srcMatches(srcTypeName, srcTypeVersion)
@@ -84,17 +84,17 @@ template<typename SrcType, typename DstType>
 class Converter: public BaseConverter {
 	public:
 		[[nodiscard]]
-		ox::StringView srcTypeName() const noexcept final {
+		constexpr ox::StringView srcTypeName() const noexcept final {
 			return ox::ModelTypeName_v<SrcType>;
 		}
 
 		[[nodiscard]]
-		int srcTypeVersion() const noexcept final {
+		constexpr int srcTypeVersion() const noexcept final {
 			return ox::ModelTypeVersion_v<SrcType>;
 		}
 
 		[[nodiscard]]
-		bool srcMatches(ox::CRStringView pSrcTypeName, int pSrcTypeVersion) const noexcept final {
+		constexpr bool srcMatches(ox::CRStringView pSrcTypeName, int pSrcTypeVersion) const noexcept final {
 			constexpr auto SrcTypeName = ox::requireModelTypeName<SrcType>();
 			constexpr auto SrcTypeVersion = ox::requireModelTypeVersion<SrcType>();
 			return pSrcTypeName == SrcTypeName
@@ -102,8 +102,8 @@ class Converter: public BaseConverter {
 		}
 
 		[[nodiscard]]
-		bool dstMatches(ox::CRStringView dstTypeName, int dstTypeVersion) const noexcept final {
+		constexpr bool dstMatches(ox::CRStringView dstTypeName, int dstTypeVersion) const noexcept final {
-			constexpr auto DstTypeName = ox::StringView(ox::requireModelTypeName<DstType>());
+			constexpr auto DstTypeName = ox::StringView{ox::requireModelTypeName<DstType>()};
 			constexpr auto DstTypeVersion = ox::requireModelTypeVersion<DstType>();
 			return dstTypeName == DstTypeName
 			    && dstTypeVersion == DstTypeVersion;
@@ -117,8 +117,9 @@ class Converter: public BaseConverter {
 		}
 
 		ox::Result<ox::UPtr<Wrap>> convertBuffToPtr(
-				keel::Context &ctx, ox::Buffer const&srcBuff) const noexcept final {
+				keel::Context &ctx, ox::BufferView const&srcBuff) const noexcept final {
 			oxRequireM(src, readAsset<SrcType>(srcBuff));
+			oxReturnError(ensureValid(src));
 			auto dst = makeWrap<DstType>();
 			oxReturnError(convert(ctx, src, wrapCast<DstType>(*dst)));
 			return {std::move(dst)};
@@ -131,12 +132,12 @@ class Converter: public BaseConverter {
 
 ox::Result<ox::UPtr<Wrap>> convert(
 		keel::Context &ctx,
-		ox::Buffer const&srcBuffer,
+		ox::BufferView const&srcBuffer,
 		ox::CRStringView dstTypeName,
 		int dstTypeVersion) noexcept;
 
 template<typename DstType>
-ox::Result<DstType> convert(keel::Context &ctx, ox::Buffer const&srcBuffer) noexcept {
+ox::Result<DstType> convert(keel::Context &ctx, ox::BufferView const&srcBuffer) noexcept {
 	static constexpr auto DstTypeName = ox::requireModelTypeName<DstType>();
 	static constexpr auto DstTypeVersion = ox::requireModelTypeVersion<DstType>();
 	oxRequire(out, convert(ctx, srcBuffer, DstTypeName, DstTypeVersion));
@@ -144,7 +145,7 @@ ox::Result<DstType> convert(keel::Context &ctx, ox::Buffer const&srcBuffer) noex
 }
 
 template<typename DstType>
-ox::Error convert(keel::Context &ctx, ox::Buffer const&buff, DstType *outObj) noexcept {
+ox::Error convert(keel::Context &ctx, ox::BufferView const&buff, DstType *outObj) noexcept {
 	static constexpr auto DstTypeName = ox::requireModelTypeName<DstType>();
 	static constexpr auto DstTypeVersion = ox::requireModelTypeVersion<DstType>();
 	oxRequire(outPtr, convert(ctx, buff, DstTypeName, DstTypeVersion));
@@ -154,7 +155,7 @@ ox::Error convert(keel::Context &ctx, ox::Buffer const&buff, DstType *outObj) no
 
 template<typename DstType>
 ox::Result<ox::Buffer> convertBuffToBuff(
-		keel::Context &ctx, ox::Buffer const&srcBuffer, ox::ClawFormat fmt) noexcept {
+		keel::Context &ctx, ox::BufferView const&srcBuffer, ox::ClawFormat fmt) noexcept {
 	static constexpr auto DstTypeName = ox::requireModelTypeName<DstType>();
 	static constexpr auto DstTypeVersion = ox::requireModelTypeVersion<DstType>();
 	oxRequire(out, convert(ctx, srcBuffer, DstTypeName, DstTypeVersion));

src/olympic/keel/include/keel/validation.hpp

@@ -0,0 +1,27 @@
+/*
+ * Copyright 2016 - 2024 Gary Talent (gary@drinkingtea.net). All rights reserved.
+ */
+
+#pragma once
+
+#include <ox/std/error.hpp>
+
+namespace keel {
+
+[[nodiscard]]
+constexpr bool valid(auto const&) noexcept {
+	return true;
+}
+
+constexpr ox::Error repair(auto const&) noexcept {
+	return OxError(1, "No repair function for this type");
+}
+
+constexpr ox::Error ensureValid(auto &o) noexcept {
+	if (!valid(o)) {
+		return repair(o);
+	}
+	return {};
+}
+
+}

src/olympic/keel/src/media.cpp

@@ -154,18 +154,6 @@ ox::Result<ox::CStringView> uuidToPath(Context &ctx, ox::UUID const&uuid) noexce
 #endif
 }
 
-ox::Error performPackTransforms(Context &ctx, ox::Buffer &clawData) noexcept {
-	oxRequireM(typeId, readAssetTypeId(clawData));
-	for (auto const tr : packTransforms(ctx)) {
-		bool changed{};
-		oxReturnError(tr(ctx, clawData, typeId).moveTo(changed));
-		if (changed) {
-			oxReturnError(readAssetTypeId(clawData).moveTo(typeId));
-		}
-	}
-	return {};
-}
-
 ox::Error reloadAsset(keel::Context &ctx, ox::StringView assetId) noexcept {
 	ox::UUIDStr uuidStr;
 	if (beginsWith(assetId, "uuid://")) {

src/olympic/keel/src/pack-applib.cpp

@@ -8,6 +8,7 @@
 #include <ox/fs/fs.hpp>
 #include <ox/logconn/def.hpp>
 #include <ox/logconn/logconn.hpp>
+#include <ox/oc/write.hpp>
 
 #include <keel/keel.hpp>
 
@@ -48,16 +49,21 @@ static ox::Error generateTypes(ox::TypeStore &ts) noexcept {
 	return {};
 }
 
-static ox::Error pack(ox::StringView argSrc, ox::StringView argRomBin, ox::StringView projectDataDir) noexcept {
+static ox::Error pack(
+		ox::StringView argSrc,
+		ox::StringView argRomBin,
+		ox::StringView argManifest,
+		ox::StringView projectDataDir) noexcept {
 	ox::Buffer dstBuff(32 * ox::units::MB);
 	oxReturnError(ox::FileSystem32::format(dstBuff.data(), dstBuff.size()));
 	ox::FileSystem32 dst(dstBuff);
 	oxRequire(ctx, keel::init(ox::make_unique<ox::PassThroughFS>(argSrc), "keel-pack"));
 	keel::TypeStore ts(*ctx->rom, ox::sfmt("{}/type_descriptors", projectDataDir));
 	oxReturnError(generateTypes(ts));
-	oxReturnError(keel::pack(*ctx, ts, dst));
+	keel::Manifest manifest;
+	oxReturnError(keel::pack(manifest, *ctx, ts, dst));
 	oxRequireM(pl, keel::GbaPreloader::make());
-	oxReturnError(preload(ts, dst, *pl));
+	oxReturnError(preload(manifest, ts, dst, *pl));
 	oxReturnError(dst.resize());
 	// resize buffer
 	oxRequire(dstSize, dst.size());
@@ -70,6 +76,8 @@ static ox::Error pack(ox::StringView argSrc, ox::StringView argRomBin, ox::Strin
 	oxReturnError(appendBinary(romBuff, dstBuff, *pl));
 	oxOutf("Final ROM buff size: {} bytes\n", romBuff.size());
 	oxReturnError(writeFileBuff(argRomBin, romBuff));
+	oxRequire(manifestJson, ox::writeOC(manifest));
+	oxReturnError(writeFileBuff(argManifest, manifestJson));
 	return {};
 }
 
@@ -77,6 +85,7 @@ static ox::Error run(int argc, char const**argv, ox::StringView projectDataDir)
 	ox::ClArgs const args(argc, argv);
 	auto const argSrc = args.getString("src", "");
 	auto const argRomBin = args.getString("rom-bin", "");
+	auto const argManifest = args.getString("manifest", "");
 	if (argSrc == "") {
 		oxErr("\033[31;1;1merror:\033[0m must specify a source directory\n");
 		return OxError(1, "must specify a source directory");
@@ -85,7 +94,7 @@ static ox::Error run(int argc, char const**argv, ox::StringView projectDataDir)
 		oxErr("\033[31;1;1merror:\033[0m must specify a path for ROM file\n");
 		return OxError(1, "must specify a path for preload file");
 	}
-	return pack(argSrc, argRomBin, projectDataDir);
+	return pack(argSrc, argRomBin, argManifest, projectDataDir);
 }
 
 namespace olympic {

src/olympic/keel/src/pack.cpp

@@ -6,13 +6,14 @@
 #include <ox/model/modelvalue.hpp>
 
 #include <keel/media.hpp>
-
 #include <keel/pack.hpp>
 
 namespace keel {
 
 static ox::Error pathToInode(
-		keel::Context &ctx, ox::FileSystem &dest, ox::ModelObject &obj) noexcept {
+		keel::Context &ctx,
+		ox::FileSystem &dest,
+		ox::ModelObject &obj) noexcept {
 	auto &o = obj;
 	auto type = static_cast<ox::FileAddressType>(o.at("type").unwrap()->get<int8_t>());
 	auto &data = o.at("data").unwrap()->get<ox::ModelUnion>();
@@ -85,7 +86,24 @@ static ox::Error transformFileAddressesObj(
 	return {};
 }
 
+static ox::Error performPackTransforms(
+		ManifestEntry &entry,
+		Context &ctx,
+		ox::Buffer &clawData) noexcept {
+	oxRequireM(typeId, readAssetTypeId(clawData));
+	for (auto const tr : packTransforms(ctx)) {
+		bool changed{};
+		oxReturnError(tr(ctx, clawData, typeId).moveTo(changed));
+		if (changed) {
+			oxReturnError(readAssetTypeId(clawData).moveTo(typeId));
+		}
+	}
+	entry.type = ox::String{typeId};
+	return {};
+}
+
 static ox::Error doTransformations(
+		Manifest &manifest,
 		keel::Context &ctx,
 		ox::TypeStore &ts,
 		ox::FileSystem &dest,
@@ -94,7 +112,7 @@ static ox::Error doTransformations(
 	oxRequire(s, dest.stat(filePath));
 	// do transformations
 	oxRequireM(buff, dest.read(s.inode));
-	oxReturnError(keel::performPackTransforms(ctx, buff));
+	oxReturnError(keel::performPackTransforms(manifest.files[filePath], ctx, buff));
 	// transform FileAddresses
 	oxRequireM(obj, keel::readAsset(ts, buff));
 	oxOutf("transforming {}\n", filePath);
@@ -108,6 +126,7 @@ static ox::Error doTransformations(
 // claw file transformations are broken out from copy because path to inode
 // transformations need to be done after the copy to the new FS is complete
 static ox::Error transformClaw(
+		Manifest &manifest,
 		keel::Context &ctx,
 		ox::TypeStore &ts,
 		ox::FileSystem &dest,
@@ -120,9 +139,9 @@ static ox::Error transformClaw(
 		oxRequire(stat, dest.stat(filePath));
 		if (stat.fileType == ox::FileType::Directory) {
 			auto const dir = ox::sfmt("{}{}/", path, name);
-			oxReturnError(transformClaw(ctx, ts, dest, dir));
+			oxReturnError(transformClaw(manifest, ctx, ts, dest, dir));
 		} else {
-			auto const err = doTransformations(ctx, ts, dest, filePath);
+			auto const err = doTransformations(manifest, ctx, ts, dest, filePath);
 			if (err) {
 				oxErrf("\033[31;1;1mCould not do transformations for {}:\n\t{}\n", filePath, toStr(err));
 				return err;
@@ -133,10 +152,13 @@ static ox::Error transformClaw(
 }
 
 static ox::Error copy(
+		Manifest &manifest,
 		ox::FileSystem &src,
 		ox::FileSystem &dest,
-		ox::CRStringView path) noexcept {
+		ox::CRStringView path,
-	oxOutf("copying directory: {}\n", path);
+		ox::CRStringView logPrefix = "") noexcept {
+	oxOutf("{}copying directory: {}\n", logPrefix, path);
+	auto const childLogPrefix = ox::sfmt("{}\t", logPrefix);
 	// copy
 	oxRequire(fileList, src.ls(path));
 	for (auto const&name : fileList) {
@@ -147,27 +169,36 @@ static ox::Error copy(
 		oxRequire(stat, src.stat(currentFile));
 		if (stat.fileType == ox::FileType::Directory) {
 			oxReturnError(dest.mkdir(currentFile, true));
-			oxReturnError(copy(src, dest, currentFile + '/'));
+			oxReturnError(copy(manifest, src, dest, currentFile + '/', childLogPrefix));
 		} else {
 			// load file
-			oxOutf("copying file: {}\n", currentFile);
+			oxOutf("{}copying file: {}...", childLogPrefix, currentFile);
+			ox::StringView status = "failed";
+			oxDefer [&status] {
+				oxOutf(" {}\n", status);
+			};
 			oxRequireM(buff, src.read(currentFile));
 			// write file to dest
 			oxReturnError(dest.write(currentFile, buff));
+			status = "OK";
+			oxRequire(stat, dest.stat(currentFile));
+			manifest.files[currentFile] = {
+				.inode = stat.inode,
+				.type = ox::String{keel::readAssetTypeId(buff).or_value({})},
+			};
 		}
 	}
 	return {};
 }
 
-static ox::Error copyFS(ox::FileSystem &src, ox::FileSystem &dest) noexcept {
+ox::Error pack(
-	oxReturnError(copy(src, dest, "/"));
+		Manifest &manifest,
-	return {};
+		keel::Context &ctx,
-}
+		ox::TypeStore &ts,
-
+		ox::FileSystem &dest) noexcept {
-ox::Error pack(keel::Context &ctx, ox::TypeStore &ts, ox::FileSystem &dest) noexcept {
+	oxReturnError(copy(manifest, *ctx.rom, dest, "/"));
-	oxReturnError(copyFS(*ctx.rom, dest));
 	oxOut("Doing transforms\n");
-	oxReturnError(transformClaw(ctx, ts, dest, "/"));
+	oxReturnError(transformClaw(manifest, ctx, ts, dest, "/"));
 	return {};
 }
 

src/olympic/keel/src/typeconv.cpp

@@ -9,7 +9,6 @@
 
 namespace keel {
 
-[[nodiscard]]
 static ox::Result<BaseConverter const*> findConverter(
 		ox::SpanView<BaseConverter const*> const&converters,
 		ox::CRStringView srcTypeName,
@@ -27,7 +26,7 @@ static ox::Result<BaseConverter const*> findConverter(
 static ox::Result<ox::UPtr<Wrap>> convert(
 		keel::Context &ctx,
 		ox::SpanView<BaseConverter const*> const&converters,
-		ox::Buffer const&srcBuffer,
+		ox::BufferView const&srcBuffer,
 		ox::CRStringView srcTypeName,
 		int srcTypeVersion,
 		ox::CRStringView dstTypeName,
@@ -55,7 +54,7 @@ static ox::Result<ox::UPtr<Wrap>> convert(
 
 ox::Result<ox::UPtr<Wrap>> convert(
 		keel::Context &ctx,
-		ox::Buffer const&srcBuffer,
+		ox::BufferView const&srcBuffer,
 		ox::CRStringView dstTypeName,
 		int dstTypeVersion) noexcept {
 	oxRequire(hdr, readAssetHeader(srcBuffer));

src/olympic/studio/applib/src/clawviewer.cpp

@@ -8,12 +8,12 @@
 
 namespace studio {
 
-ClawEditor::ClawEditor(ox::CRStringView path, ox::ModelObject obj) noexcept:
+ClawEditor::ClawEditor(StudioContext &sctx, ox::StringParam path):
-	Editor(path),
+	Editor(std::move(path)),
-	m_obj(std::move(obj)) {
+	m_obj(sctx.project->loadObj<ox::ModelObject>(itemPath()).unwrapThrow()) {
 }
 
-void ClawEditor::draw(studio::StudioContext&) noexcept {
+void ClawEditor::draw(StudioContext&) noexcept {
 	ImGui::BeginChild("PaletteEditor");
 	static constexpr auto flags = ImGuiTableFlags_RowBg | ImGuiTableFlags_NoBordersInBody;
 	if (ImGui::BeginTable("ObjTree", 3, flags)) {

src/olympic/studio/applib/src/clawviewer.hpp

@@ -11,14 +11,14 @@
 
 namespace studio {
 
-class ClawEditor: public studio::Editor {
+class ClawEditor: public Editor {
 	private:
 		using ObjPath = ox::Vector<ox::StringView, 8>;
 		ox::ModelObject m_obj;
 	public:
-		ClawEditor(ox::CRStringView path, ox::ModelObject obj) noexcept;
+		ClawEditor(StudioContext &sctx, ox::StringParam path);
 
-		void draw(studio::StudioContext&) noexcept final;
+		void draw(StudioContext&) noexcept final;
 
 	private:
 		static void drawRow(ox::ModelValue const&value) noexcept;

src/olympic/studio/applib/src/studioapp.cpp

@@ -366,15 +366,10 @@ ox::Error StudioUI::openFileActiveTab(ox::CRStringView path, bool makeActiveTab)
 	}
 	oxRequire(ext, studio::fileExt(path));
 	// create Editor
-	studio::BaseEditor *editor = nullptr;
+	BaseEditor *editor = nullptr;
-	if (!m_editorMakers.contains(ext)) {
+	auto const err = m_editorMakers.contains(ext) ?
-		auto [obj, err] = m_project->loadObj<ox::ModelObject>(path);
+		m_editorMakers[ext](path).moveTo(editor) :
-		if (err) {
+		ox::makeCatch<ClawEditor>(m_sctx, path).moveTo(editor);
-			return OxError(1, "There is no editor for this file extension");
-		}
-		editor = ox::make<ClawEditor>(path, std::move(obj));
-	} else {
-		auto const err = m_editorMakers[ext](path).moveTo(editor);
 	if (err) {
 		if constexpr(!ox::defines::Debug) {
 			oxErrf("Could not open Editor: {}\n", toStr(err));
@@ -383,7 +378,6 @@ ox::Error StudioUI::openFileActiveTab(ox::CRStringView path, bool makeActiveTab)
 		}
 		return err;
 	}
-	}
 	editor->closed.connect(this, &StudioUI::closeFile);
 	m_editors.emplace_back(editor);
 	m_openFiles.emplace_back(path);