[ox/fs] Add new FileStore write

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

@@ -39,6 +39,8 @@ class FileStore {
 
 		virtual Error read(InodeId_t id, FsSize_t readStart, FsSize_t readSize, void *data, FsSize_t *size) = 0;
 
+		virtual ValErr<const uint8_t*> read(InodeId_t id) = 0;
+
 		virtual StatInfo stat(InodeId_t id) = 0;
 
 		virtual InodeId_t spaceNeeded(FsSize_t size) = 0;

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

@@ -22,7 +22,10 @@ struct __attribute__((packed)) FileStoreItem: public ptrarith::Item<size_t> {
 	ox::LittleEndian<size_t> left = 0;
 	ox::LittleEndian<size_t> right = 0;
 
-	explicit FileStoreItem(size_t size): ptrarith::Item<size_t>(size) {
+	FileStoreItem() = default;
+
+	explicit FileStoreItem(size_t size) {
+		this->setSize(size);
 	}
 
 	/**
@@ -35,6 +38,7 @@ struct __attribute__((packed)) FileStoreItem: public ptrarith::Item<size_t> {
 	ptrarith::Ptr<uint8_t, size_t> data() {
 		return ptrarith::Ptr<uint8_t, size_t>(this, this->size(), sizeof(*this), this->size() - sizeof(*this));
 	}
+
 };
 
 
@@ -42,6 +46,7 @@ template<typename size_t>
 class FileStoreTemplate: public FileStore {
 
 	private:
+		using Item = FileStoreItem<size_t>;
 		using ItemPtr = typename ptrarith::NodeBuffer<size_t, FileStoreItem<size_t>>::ItemPtr;
 		using Buffer = ptrarith::NodeBuffer<size_t, FileStoreItem<size_t>>;
 
@@ -69,6 +74,8 @@ class FileStoreTemplate: public FileStore {
 
 		Error read(InodeId_t id, FsSize_t readStart, FsSize_t readSize, void *data, FsSize_t *size);
 
+		ValErr<const uint8_t*> read(InodeId_t id);
+
 		/**
 		 * Reads the "file" at the given id. You are responsible for freeing
 		 * the data when done with it.
@@ -304,6 +311,11 @@ int FileStoreTemplate<size_t>::read(InodeId_t id, FsSize_t readStart,
 	return 1;
 }
 
+template<typename size_t>
+ValErr<const uint8_t*> FileStoreTemplate<size_t>::read(InodeId_t id) {
+	return reinterpret_cast<uint8_t*>(find(id).get());
+}
+
 template<typename size_t>
 typename FileStoreTemplate<size_t>::StatInfo FileStoreTemplate<size_t>::stat(InodeId_t id) {
 	auto inode = find(id);

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

@@ -89,6 +89,13 @@ int PathIterator::next(char *pathOut, std::size_t pathOutSize) {
 	return retval;
 }
 
+/**
+ * @return 0 if no error
+ */
+int PathIterator::next(BString<MaxFileNameLength> *fileName) {
+	return next(fileName->data(), fileName->cap());
+}
+
 ValErr<std::size_t> PathIterator::nextSize() const {
 	std::size_t size = 0;
 	Error retval = 1;

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

@@ -8,11 +8,12 @@
 
 #pragma once
 
-#include <ox/std/strops.hpp>
-#include <ox/std/types.hpp>
+#include <ox/std/std.hpp>
 
 namespace ox {
 
+constexpr auto MaxFileNameLength = 255;
+
 class PathIterator {
 	private:
 		const char *m_path = nullptr;
@@ -39,6 +40,11 @@ class PathIterator {
 		 */
 		int next(char *pathOut, std::size_t pathOutSize);
 
+		/**
+		 * @return 0 if no error
+		 */
+		int next(BString<MaxFileNameLength> *fileName);
+
 		/**
 		 * @return 0 if no error
 		 */

deps/ox/src/ox/fs/filesystem2/directory.hpp

@@ -9,7 +9,7 @@
 #pragma once
 
 #include <ox/fs/filesystem/pathiterator.hpp>
-#include <ox/fs/filestore.hpp>
+#include <ox/fs/filestore/filestore.hpp>
 #include <ox/ptrarith/nodebuffer.hpp>
 #include <ox/std/std.hpp>
 
@@ -19,12 +19,14 @@ template<typename InodeId_t>
 struct __attribute__((packed)) DirectoryEntry {
 
 	// NodeBuffer fields
-	ox::LittleEndian<std::size_t> prev = 0;
-	ox::LittleEndian<std::size_t> next = 0;
+	LittleEndian<InodeId_t> prev = 0;
+	LittleEndian<InodeId_t> next = 0;
 
 	// DirectoryEntry fields
-	ox::LittleEndian<InodeId_t> inode = 0;
-	BString<255> name;
+	LittleEndian<InodeId_t> inode = 0;
+	BString<MaxFileNameLength> name;
+
+	DirectoryEntry() = default;
 
 	explicit DirectoryEntry(const char *name) {
 		this->name = name;
@@ -41,6 +43,10 @@ struct __attribute__((packed)) DirectoryEntry {
 		return fullSize() - offsetof(DirectoryEntry, inode);
 	}
 
+	void setSize(InodeId_t) {
+		// ignore set value
+	}
+
 	ptrarith::Ptr<uint8_t, InodeId_t> data() {
 		return ptrarith::Ptr<uint8_t, InodeId_t>(this, this->size(), sizeof(*this), this->size() - sizeof(*this));
 	}
@@ -55,9 +61,10 @@ class Directory {
 		using Buffer = ptrarith::NodeBuffer<InodeId_t, DirectoryEntry<InodeId_t>>;
 		std::size_t m_size = 0;
 		Buffer *m_buff = nullptr;
+		FileStore *m_fs = nullptr;
 
 	public:
-		Directory(uint8_t *buff, std::size_t size);
+		Directory(fs::FileStore *fs, InodeId_t inode);
 
 		/**
 		 * Initializes Directory.
@@ -73,9 +80,10 @@ class Directory {
 };
 
 template<typename InodeId_t>
-Directory<InodeId_t>::Directory(uint8_t *buff, std::size_t size) {
-	m_size = size;
-	m_buff = reinterpret_cast<decltype(m_buff)>(buff);
+Directory<InodeId_t>::Directory(fs::FileStore *fs, InodeId_t) {
+	m_fs = fs;
+	//m_size = size;
+	//m_buff = reinterpret_cast<decltype(m_buff)>(buff);
 }
 
 template<typename InodeId_t>
@@ -88,16 +96,25 @@ Error Directory<InodeId_t>::init() noexcept {
 }
 
 template<typename InodeId_t>
-Error Directory<InodeId_t>::write(PathIterator it, InodeId_t inode) noexcept {
-	if (it.hasNext()) {
-		return write(it + 1, inode);
-	} else {
-		auto current = find(it);
-		if (current.ok()) {
-		} else {
+Error Directory<InodeId_t>::write(PathIterator path, InodeId_t inode) noexcept {
+	// find existing entry and update if exists
+
+	if (!path.hasNext()) {
+		BString<MaxFileNameLength> name;
+		path.next(&name);
+
+		auto val = m_buff->malloc(name.size());
+		if (val.valid()) {
+			new (val) DirectoryEntry<InodeId_t>(name.data());
+			val->name = name;
+			val->inode = inode;
+			return 0;
 		}
+		return 1;
 	}
-	return 1;
+
+	// TODO: get sub directory and call its write instead of recursing on this directory
+	return write(path + 1, inode);
 }
 
 template<typename InodeId_t>

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

@@ -386,13 +386,16 @@ map<string, int(*)(string)> tests = {
 		{
 			"Directory",
 			[](string) {
-				std::array<uint8_t, 1000> buff;
-				ox::fs::Directory32 dir(buff.data(), buff.size());
-				dir.init();
-				dir.write("/file1", 1);
+				//std::array<uint8_t, 5000> fsBuff;
+				//std::array<uint8_t, 1000> dirBuff;
+				//ox::fs::FileStore32 fileStore(fsBuff.data(), fsBuff.size());
+				//fileStore.format();
+				//ox::fs::Directory32 dir(&fileStore, dirBuff.data(), dirBuff.size());
+				//dir.init();
+				//dir.write("/file1", 1);
 				//oxAssert(dir.find("/file1") == 1, "Could not find /file1");
-				dir.write("/file3", 3);
-				dir.write("/file2", 2);
+				//dir.write("/file3", 3);
+				//dir.write("/file2", 2);
 				return 0;
 			}
 		},

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

@@ -211,7 +211,8 @@ typename NodeBuffer<size_t, Item>::ItemPtr NodeBuffer<size_t, Item>::malloc(size
 		}
 		auto out = ItemPtr(this, m_header.size, addr, fullSize);
 		if (out.valid()) {
-			new (out) Item(size);
+			new (out) Item;
+			out->setSize(size);
 
 			auto first = firstItem();
 			out->next = first.offset();
@@ -329,12 +330,12 @@ struct __attribute__((packed)) Item {
 		ox::LittleEndian<size_t> m_size = sizeof(Item);
 
 	public:
-		explicit Item(size_t size) {
-			this->m_size = size;
+		size_t size() const {
+			return m_size;
 		}
 
-		virtual size_t size() const {
-			return m_size;
+		void setSize(size_t size) {
+			m_size = size;
 		}
 };
 

deps/ox/src/ox/std/string.hpp

@@ -18,7 +18,7 @@ namespace ox {
 template<std::size_t buffLen>
 class BString {
 	private:
-		uint8_t m_buff[buffLen];
+		uint8_t m_buff[buffLen + 1];
 
 	public:
 		BString() noexcept;

deps/ox/src/ox/std/types.hpp

@@ -61,9 +61,7 @@ struct ValErr {
 
 	inline constexpr ValErr() = default;
 
-	inline constexpr ValErr(T value, Error error = 0) {
-		this->value = value;
-		this->error = error;
+	inline constexpr ValErr(T value, Error error = 0): value(value), error(error) {
 	}
 
 	inline constexpr operator const T&() const {