Filesystem code refactoring (#11570)

- Separate fs::block_t and fs::filesystem_t to a new source file and header
- Remove inclusion of flopimg.h from fsmgr.h

scripts/src/formats.lua

@@ -75,6 +75,8 @@ project "formats"
 
 		MAME_DIR .. "src/lib/formats/fsmgr.h",
 		MAME_DIR .. "src/lib/formats/fsmgr.cpp",
+		MAME_DIR .. "src/lib/formats/fsblk.h",
+		MAME_DIR .. "src/lib/formats/fsblk.cpp",
 		MAME_DIR .. "src/lib/formats/fsblk_vec.h",
 		MAME_DIR .. "src/lib/formats/fsblk_vec.cpp",
 		MAME_DIR .. "src/lib/formats/fs_unformatted.h",

src/lib/formats/fs_cbmdos.cpp

@@ -12,10 +12,13 @@
 
 #include "fs_cbmdos.h"
 #include "d64_dsk.h"
+#include "fsblk.h"
+
 #include "corestr.h"
 #include "strformat.h"
 
 #include <array>
+#include <optional>
 #include <set>
 #include <string_view>
 #include <tuple>

src/lib/formats/fs_cbmdos.h

@@ -13,10 +13,7 @@
 
 #pragma once
 
-
 #include "fsmgr.h"
-#include <optional>
-#include <string_view>
 
 namespace fs {
 

src/lib/formats/fs_coco_os9.cpp

@@ -15,10 +15,13 @@
 
 #include "fs_coco_os9.h"
 #include "coco_rawdsk.h"
+#include "fsblk.h"
 
 #include "multibyte.h"
 #include "strformat.h"
 
+#include <optional>
+
 
 using namespace fs;
 

src/lib/formats/fs_coco_os9.h

@@ -14,8 +14,6 @@
 #pragma once
 
 #include "fsmgr.h"
-#include <optional>
-#include <string_view>
 
 namespace fs {
 

src/lib/formats/fs_coco_rsdos.cpp

@@ -10,6 +10,8 @@
 
 #include "fs_coco_rsdos.h"
 #include "coco_rawdsk.h"
+#include "fsblk.h"
+
 #include "util/strformat.h"
 
 #include <bitset>

src/lib/formats/fs_coco_rsdos.h

@@ -14,8 +14,6 @@
 #pragma once
 
 #include "fsmgr.h"
-#include <optional>
-#include <string_view>
 
 namespace fs {
 

src/lib/formats/fs_fat.cpp

@@ -141,10 +141,13 @@
 ****************************************************************************/
 
 #include "fs_fat.h"
+#include "fsblk.h"
 #include "pc_dsk.h"
 
 #include "strformat.h"
 
+#include <optional>
+
 using namespace fs;
 
 const fs::pc_fat_image fs::PC_FAT;

src/lib/formats/fs_fat.h

@@ -14,11 +14,11 @@
 #pragma once
 
 #include "fsmgr.h"
-#include <optional>
-#include <string_view>
 
 namespace fs {
 
+using u8 = uint8_t;
+
 // ======================> fat_image
 
 class fat_image : public manager_t {

src/lib/formats/fs_hp98x5.cpp

@@ -59,8 +59,11 @@
 *********************************************************************/
 
 #include "fs_hp98x5.h"
+#include "fsblk.h"
 #include "hpi_dsk.h"
+
 #include "strformat.h"
+
 #include <bitset>
 #include <map>
 

src/lib/formats/fs_hplif.cpp

@@ -9,16 +9,20 @@
 ***************************************************************************/
 
 #include "fs_hplif.h"
+#include "fsblk.h"
 #include "hp300_dsk.h"
+
 #include "corestr.h"
 #include "osdcomm.h"
 #include "strformat.h"
 
 #include <array>
+#include <optional>
 #include <set>
 #include <string_view>
 #include <tuple>
 #include <iostream>
+
 namespace fs {
 	const hplif_image HPLIF;
 };

src/lib/formats/fs_hplif.h

@@ -13,10 +13,7 @@
 
 #pragma once
 
-
 #include "fsmgr.h"
-#include <optional>
-#include <string_view>
 
 namespace fs {
 
@@ -39,7 +36,6 @@ namespace fs {
 		virtual std::vector<meta_description> file_meta_description() const override;
 	};
 
-
 	extern const hplif_image HPLIF;
 
 } // namespace fs

src/lib/formats/fs_isis.cpp

@@ -9,6 +9,7 @@
 *********************************************************************/
 
 #include "fs_isis.h"
+#include "fsblk.h"
 #include "img_dsk.h"
 
 #include "multibyte.h"

src/lib/formats/fs_oric_jasmin.cpp

@@ -4,6 +4,7 @@
 // Management of Oric Jasmin floppy images
 
 #include "fs_oric_jasmin.h"
+#include "fsblk.h"
 #include "oric_dsk.h"
 
 #include "multibyte.h"

src/lib/formats/fs_prodos.cpp

@@ -5,6 +5,7 @@
 
 #include "fs_prodos.h"
 #include "ap_dsk35.h"
+#include "fsblk.h"
 
 #include "multibyte.h"
 #include "strformat.h"

src/lib/formats/fs_unformatted.cpp

@@ -4,6 +4,8 @@
 // Creation of unformatted floppy images
 
 #include "fs_unformatted.h"
+#include "flopimg.h"
+#include "fsblk.h"
 
 namespace fs {
 

src/lib/formats/fs_unformatted.h

@@ -10,6 +10,8 @@
 
 #include "fsmgr.h"
 
+class floppy_image;
+
 namespace fs {
 
 class unformatted_image : public manager_t {

src/lib/formats/fs_vtech.cpp

@@ -4,6 +4,7 @@
 // Management of VTech images
 
 #include "fs_vtech.h"
+#include "fsblk.h"
 #include "vt_dsk.h"
 
 #include "multibyte.h"

src/lib/formats/fsblk.cpp

@@ -0,0 +1,254 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+
+// Filesystem operations on mounted image blocks
+
+#include "fsblk.h"
+
+#include "multibyte.h"
+#include "strformat.h"
+
+#include <cstring>
+#include <stdexcept>
+
+namespace fs {
+
+void refcounted_inner::ref()
+{
+	m_ref ++;
+}
+
+void refcounted_inner::ref_weak()
+{
+	m_weak_ref ++;
+}
+
+bool refcounted_inner::unref()
+{
+	m_ref --;
+	if(m_ref == 0) {
+		if(m_weak_ref)
+			drop_weak_references();
+		else
+			delete this;
+		return true;
+	}
+	return false;
+}
+
+bool refcounted_inner::unref_weak()
+{
+	m_weak_ref --;
+	if(m_weak_ref == 0 && m_ref == 0) {
+		delete this;
+		return true;
+	}
+	return false;
+}
+
+
+
+void fsblk_t::set_block_size(u32 block_size)
+{
+	m_block_size = block_size;
+}
+
+u8 *fsblk_t::iblock_t::offset(const char *function, u32 off, u32 size)
+{
+	if(off + size > m_size)
+		throw std::out_of_range(util::string_format("block_t::%s out-of-block access, offset=%d, size=%d, block size=%d", function, off, size, m_size));
+	return data() + off;
+}
+
+const u8 *fsblk_t::iblock_t::rooffset(const char *function, u32 off, u32 size)
+{
+	if(off + size > m_size)
+		throw std::out_of_range(util::string_format("block_t::%s out-of-block read access, offset=%d, size=%d, block size=%d\n", function, off, size, m_size));
+	return rodata() + off;
+}
+
+void fsblk_t::block_t::copy(u32 offset, const u8 *src, u32 size)
+{
+	memcpy(m_object->offset("copy", offset, size), src, size);
+}
+
+void fsblk_t::block_t::fill(u32 offset, u8 data, u32 size)
+{
+	memset(m_object->offset("fill", offset, size), data, size);
+}
+
+void fsblk_t::block_t::fill(u8 data)
+{
+	memset(m_object->data(), data, m_object->size());
+}
+
+void fsblk_t::block_t::wstr(u32 offset, std::string_view str)
+{
+	memcpy(m_object->offset("wstr", offset, str.size()), str.data(), str.size());
+}
+
+void fsblk_t::block_t::w8(u32 offset, u8 data)
+{
+	m_object->offset("w8", offset, 1)[0] = data;
+}
+
+void fsblk_t::block_t::w16b(u32 offset, u16 data)
+{
+	put_u16be(m_object->offset("w16b", offset, 2), data);
+}
+
+void fsblk_t::block_t::w24b(u32 offset, u32 data)
+{
+	put_u24be(m_object->offset("w24b", offset, 3), data);
+}
+
+void fsblk_t::block_t::w32b(u32 offset, u32 data)
+{
+	put_u32be(m_object->offset("w32b", offset, 4), data);
+}
+
+void fsblk_t::block_t::w16l(u32 offset, u16 data)
+{
+	put_u16le(m_object->offset("w16l", offset, 2), data);
+}
+
+void fsblk_t::block_t::w24l(u32 offset, u32 data)
+{
+	put_u24le(m_object->offset("w24l", offset, 3), data);
+}
+
+void fsblk_t::block_t::w32l(u32 offset, u32 data)
+{
+	put_u32le(m_object->offset("w32l", offset, 4), data);
+}
+
+std::string_view fsblk_t::block_t::rstr(u32 offset, u32 size) const
+{
+	const u8 *d = m_object->rooffset("rstr", offset, size);
+	return std::string_view(reinterpret_cast<const char *>(d), size);
+}
+
+u8 fsblk_t::block_t::r8(u32 offset) const
+{
+	return m_object->offset("r8", offset, 1)[0];
+}
+
+u16 fsblk_t::block_t::r16b(u32 offset) const
+{
+	return get_u16be(m_object->offset("r16b", offset, 2));
+}
+
+u32 fsblk_t::block_t::r24b(u32 offset) const
+{
+	return get_u24be(m_object->offset("r24b", offset, 3));
+}
+
+u32 fsblk_t::block_t::r32b(u32 offset) const
+{
+	return get_u32be(m_object->offset("r32b", offset, 4));
+}
+
+u16 fsblk_t::block_t::r16l(u32 offset) const
+{
+	return get_u16le(m_object->offset("r16l", offset, 2));
+}
+
+u32 fsblk_t::block_t::r24l(u32 offset) const
+{
+	return get_u24le(m_object->offset("r24l", offset, 3));
+}
+
+u32 fsblk_t::block_t::r32l(u32 offset) const
+{
+	return get_u32le(m_object->offset("r32l", offset, 4));
+}
+
+
+
+void filesystem_t::wstr(u8 *p, std::string_view str)
+{
+	memcpy(p, str.data(), str.size());
+}
+
+std::string_view filesystem_t::rstr(const u8 *p, u32 size)
+{
+	return std::string_view(reinterpret_cast<const char *>(p), size);
+}
+
+std::string_view filesystem_t::trim_end_spaces(std::string_view str)
+{
+	const auto i = str.find_last_not_of(' ');
+	return str.substr(0, (std::string::npos != i) ? (i + 1) : 0);
+}
+
+meta_data filesystem_t::volume_metadata()
+{
+	return meta_data();
+}
+
+err_t filesystem_t::volume_metadata_change(const meta_data &meta)
+{
+	return ERR_UNSUPPORTED;
+}
+
+std::pair<err_t, meta_data> filesystem_t::metadata(const std::vector<std::string> &path)
+{
+	return std::make_pair(ERR_UNSUPPORTED, meta_data());
+}
+
+err_t filesystem_t::metadata_change(const std::vector<std::string> &path, const meta_data &meta)
+{
+	return ERR_UNSUPPORTED;
+}
+
+std::pair<err_t, std::vector<dir_entry>> filesystem_t::directory_contents(const std::vector<std::string> &path)
+{
+	return std::make_pair(ERR_UNSUPPORTED, std::vector<dir_entry>());
+}
+
+err_t filesystem_t::rename(const std::vector<std::string> &opath, const std::vector<std::string> &npath)
+{
+	return ERR_UNSUPPORTED;
+}
+
+err_t filesystem_t::remove(const std::vector<std::string> &path)
+{
+	return ERR_UNSUPPORTED;
+}
+
+err_t filesystem_t::dir_create(const std::vector<std::string> &path, const meta_data &meta)
+{
+	return ERR_UNSUPPORTED;
+}
+
+err_t filesystem_t::file_create(const std::vector<std::string> &path, const meta_data &meta)
+{
+	return ERR_UNSUPPORTED;
+}
+
+std::pair<err_t, std::vector<u8>> filesystem_t::file_read(const std::vector<std::string> &path)
+{
+	return std::make_pair(ERR_UNSUPPORTED, std::vector<u8>());
+}
+
+err_t filesystem_t::file_write(const std::vector<std::string> &path, const std::vector<u8> &data)
+{
+	return ERR_UNSUPPORTED;
+}
+
+std::pair<err_t, std::vector<u8>> filesystem_t::file_rsrc_read(const std::vector<std::string> &path)
+{
+	return std::make_pair(ERR_UNSUPPORTED, std::vector<u8>());
+}
+
+err_t filesystem_t::file_rsrc_write(const std::vector<std::string> &path, const std::vector<u8> &data)
+{
+	return ERR_UNSUPPORTED;
+}
+
+err_t filesystem_t::format(const meta_data &meta)
+{
+	return ERR_UNSUPPORTED;
+}
+
+} // namespace fs

src/lib/formats/fsblk.h

@@ -0,0 +1,276 @@
+// license:BSD-3-Clause
+// copyright-holders:Olivier Galibert
+
+// Filesystem operations on mounted image blocks
+
+#ifndef MAME_FORMATS_FSBLK_H
+#define MAME_FORMATS_FSBLK_H
+
+#pragma once
+
+#include "fsmeta.h"
+
+#include <string>
+#include <string_view>
+#include <utility>
+#include <vector>
+
+namespace fs {
+
+using u8  = uint8_t;
+using u16 = uint16_t;
+using u32 = uint32_t;
+using u64 = uint64_t;
+
+enum err_t {
+	ERR_OK = 0,
+	ERR_UNSUPPORTED,
+	ERR_INVALID,
+	ERR_NOT_FOUND,
+	ERR_NOT_EMPTY,
+	ERR_NO_SPACE,
+};
+
+template<typename T> class refcounted_outer {
+public:
+	refcounted_outer(bool weak) :  m_object(nullptr), m_is_weak_ref(weak) {}
+	refcounted_outer(T *object, bool weak) : m_object(object), m_is_weak_ref(weak) {
+		ref();
+	}
+
+	refcounted_outer(const refcounted_outer &cref) {
+		m_object = cref.m_object;
+		m_is_weak_ref = cref.m_is_weak_ref;
+		ref();
+	}
+
+	refcounted_outer(refcounted_outer &&cref) {
+		m_object = cref.m_object;
+		m_is_weak_ref = cref.m_is_weak_ref;
+		cref.m_object = nullptr;
+	}
+
+	~refcounted_outer() {
+		unref();
+	}
+
+	refcounted_outer<T> &operator =(T *dir) {
+		if(m_object != dir) {
+			unref();
+			m_object = dir;
+			ref();
+		}
+		return *this;
+	}
+
+	refcounted_outer<T> &operator =(const refcounted_outer<T> &cref) {
+		if(m_object != cref.m_object) {
+			unref();
+			m_object = cref.m_object;
+			ref();
+		}
+		return *this;
+	}
+
+	refcounted_outer<T> &operator =(refcounted_outer<T> &&cref) {
+		if(m_object != cref.m_object) {
+			unref();
+			m_object = cref.m_object;
+			ref();
+		} else if(m_is_weak_ref != cref.m_is_weak_ref) {
+			ref();
+			cref.unref();
+			m_object = cref.m_object; // In case the object got deleted (when going from strong ref to weak on the last strong)
+		}
+		cref.m_object = nullptr;
+		return *this;
+	}
+
+	operator bool() const { return m_object != nullptr; }
+
+protected:
+	T *m_object;
+	bool m_is_weak_ref;
+
+private:
+	void ref() {
+		if(m_object) {
+			if(m_is_weak_ref)
+				m_object->ref_weak();
+			else
+				m_object->ref();
+		}
+	}
+
+	void unref() {
+		if(m_object) {
+			bool del = m_is_weak_ref ? m_object->unref_weak() : m_object->unref();
+			if(del)
+				m_object = nullptr;
+		}
+	}
+};
+
+
+class refcounted_inner {
+public:
+	refcounted_inner() : m_ref(0), m_weak_ref(0) {}
+	virtual ~refcounted_inner() = default;
+
+	void ref();
+	void ref_weak();
+	bool unref();
+	bool unref_weak();
+
+	virtual void drop_weak_references() = 0;
+
+public:
+	u32 m_ref, m_weak_ref;
+};
+
+enum class dir_entry_type {
+	dir,
+	file,
+};
+
+struct dir_entry {
+	std::string m_name;
+	dir_entry_type m_type;
+	meta_data m_meta;
+
+	dir_entry(dir_entry_type type, const meta_data &meta) : m_name(meta.get_string(meta_name::name)), m_type(type), m_meta(std::move(meta)) {}
+};
+
+class fsblk_t {
+protected:
+	class iblock_t : public refcounted_inner {
+	public:
+		iblock_t(u32 size) : refcounted_inner(), m_size(size) {}
+		virtual ~iblock_t() = default;
+
+		u32 size() const { return m_size; }
+
+		virtual const u8 *rodata() = 0;
+		virtual u8 *data() = 0;
+		u8 *offset(const char *function, u32 off, u32 size);
+		const u8 *rooffset(const char *function, u32 off, u32 size);
+
+	protected:
+		u32 m_size;
+	};
+
+
+public:
+	class block_t : public refcounted_outer<iblock_t> {
+	public:
+		block_t(bool weak = false) :  refcounted_outer<iblock_t>(weak) {}
+		block_t(iblock_t *block, bool weak = true) : refcounted_outer(block, weak) {}
+		virtual ~block_t() = default;
+
+		block_t strong() { return block_t(m_object, false); }
+		block_t weak() { return block_t(m_object, true); }
+
+		u32 size() const { return m_object->size(); }
+
+		const u8 *rodata() const { return m_object->rodata(); }
+		u8 *data() { return m_object->data(); }
+
+		void copy(u32 offset, const u8 *src, u32 size);
+		void fill(            u8 data);
+		void fill(u32 offset, u8 data, u32 size);
+		void wstr(u32 offset, std::string_view str);
+		void w8(  u32 offset, u8 data);
+		void w16b(u32 offset, u16 data);
+		void w24b(u32 offset, u32 data);
+		void w32b(u32 offset, u32 data);
+		void w16l(u32 offset, u16 data);
+		void w24l(u32 offset, u32 data);
+		void w32l(u32 offset, u32 data);
+
+		std::string_view rstr(u32 offset, u32 size) const;
+		u8  r8(  u32 offset) const;
+		u16 r16b(u32 offset) const;
+		u32 r24b(u32 offset) const;
+		u32 r32b(u32 offset) const;
+		u16 r16l(u32 offset) const;
+		u32 r24l(u32 offset) const;
+		u32 r32l(u32 offset) const;
+	};
+
+	fsblk_t() : m_block_size(0) {}
+	virtual ~fsblk_t() = default;
+
+	virtual void set_block_size(u32 block_size);
+	virtual u32 block_count() const = 0;
+	virtual block_t get(u32 id) = 0;
+	virtual void fill(u8 data) = 0;
+
+protected:
+	u32 m_block_size;
+};
+
+
+class filesystem_t {
+public:
+	virtual ~filesystem_t() = default;
+
+	// Get the metadata for the volume
+	virtual meta_data volume_metadata();
+
+	// Change the metadata for the volume
+	virtual err_t volume_metadata_change(const meta_data &meta);
+
+	// Get the metadata for a file or a directory.  Empty path targets the root directory
+	virtual std::pair<err_t, meta_data> metadata(const std::vector<std::string> &path);
+
+	// Change the metadata for a file or a directory.  Empty path targets the root directory
+	virtual err_t metadata_change(const std::vector<std::string> &path, const meta_data &meta);
+
+	// Get the contents of a directory, empty path targets the root directory
+	virtual std::pair<err_t, std::vector<dir_entry>> directory_contents(const std::vector<std::string> &path);
+
+	// Rename a file or a directory.  In contrast to metadata_change, this can move the object
+	// between directories
+	virtual err_t rename(const std::vector<std::string> &opath, const std::vector<std::string> &npath);
+
+	// Remove a file or a directory.  Directories must be empty (e.g. it's not recursive)
+	virtual err_t remove(const std::vector<std::string> &path);
+
+	// Create a directory, path designates where the directory must be, directory name is in meta
+	virtual err_t dir_create(const std::vector<std::string> &path, const meta_data &meta);
+
+	// Create an empty file, path designates where the file must be, file name is in meta
+	virtual err_t file_create(const std::vector<std::string> &path, const meta_data &meta);
+
+	// Read the contents of a file
+	virtual std::pair<err_t, std::vector<u8>> file_read(const std::vector<std::string> &path);
+
+	// Replace the contents of a file, the file must already exist
+	virtual err_t file_write(const std::vector<std::string> &path, const std::vector<u8> &data);
+
+	// Read the resource fork of a file on systems that handle those
+	virtual std::pair<err_t, std::vector<u8>> file_rsrc_read(const std::vector<std::string> &path);
+
+	// Replace the resource fork of a file, the file must already exist
+	virtual err_t file_rsrc_write(const std::vector<std::string> &path, const std::vector<u8> &data);
+
+	// Format an image, provide the volume metadata
+	virtual err_t format(const meta_data &meta);
+
+	static void wstr(u8 *p, std::string_view str);
+
+	static std::string_view rstr(const u8 *p, u32 size);
+
+	static std::string_view trim_end_spaces(std::string_view str);
+
+protected:
+	filesystem_t(fsblk_t &blockdev, u32 size) : m_blockdev(blockdev) {
+		m_blockdev.set_block_size(size);
+	}
+
+	fsblk_t &m_blockdev;
+};
+
+} // namespace fs
+
+#endif

src/lib/formats/fsblk_vec.h

@@ -3,7 +3,7 @@
 
 // Block device on vector<uint8_t>
 
-#include "fsmgr.h"
+#include "fsblk.h"
 
 namespace fs {
 

src/lib/formats/fsmgr.cpp

@@ -6,49 +6,10 @@
 // Currently limited to floppies and creation of preformatted images
 
 #include "fsmgr.h"
-
+#include "flopimg.h"
-#include "multibyte.h"
-#include "strformat.h"
-
-#include <stdexcept>
 
 namespace fs {
 
-void refcounted_inner::ref()
-{
-	m_ref ++;
-}
-
-void refcounted_inner::ref_weak()
-{
-	m_weak_ref ++;
-}
-
-bool refcounted_inner::unref()
-{
-	m_ref --;
-	if(m_ref == 0) {
-		if(m_weak_ref)
-			drop_weak_references();
-		else
-			delete this;
-		return true;
-	}
-	return false;
-}
-
-bool refcounted_inner::unref_weak()
-{
-	m_weak_ref --;
-	if(m_weak_ref == 0 && m_ref == 0) {
-		delete this;
-		return true;
-	}
-	return false;
-}
-
-
-
 void manager_t::enumerate_f(floppy_enumerator &fe) const
 {
 }
@@ -104,209 +65,6 @@ char manager_t::directory_separator() const
 	return 0; // Subdirectories not supported by default
 }
 
-void fsblk_t::set_block_size(u32 block_size)
-{
-	m_block_size = block_size;
-}
-
-u8 *fsblk_t::iblock_t::offset(const char *function, u32 off, u32 size)
-{
-	if(off + size > m_size)
-		throw std::out_of_range(util::string_format("block_t::%s out-of-block access, offset=%d, size=%d, block size=%d", function, off, size, m_size));
-	return data() + off;
-}
-
-const u8 *fsblk_t::iblock_t::rooffset(const char *function, u32 off, u32 size)
-{
-	if(off + size > m_size)
-		throw std::out_of_range(util::string_format("block_t::%s out-of-block read access, offset=%d, size=%d, block size=%d\n", function, off, size, m_size));
-	return rodata() + off;
-}
-
-void fsblk_t::block_t::copy(u32 offset, const u8 *src, u32 size)
-{
-	memcpy(m_object->offset("copy", offset, size), src, size);
-}
-
-void fsblk_t::block_t::fill(u32 offset, u8 data, u32 size)
-{
-	memset(m_object->offset("fill", offset, size), data, size);
-}
-
-void fsblk_t::block_t::fill(u8 data)
-{
-	memset(m_object->data(), data, m_object->size());
-}
-
-void fsblk_t::block_t::wstr(u32 offset, std::string_view str)
-{
-	memcpy(m_object->offset("wstr", offset, str.size()), str.data(), str.size());
-}
-
-void fsblk_t::block_t::w8(u32 offset, u8 data)
-{
-	m_object->offset("w8", offset, 1)[0] = data;
-}
-
-void fsblk_t::block_t::w16b(u32 offset, u16 data)
-{
-	put_u16be(m_object->offset("w16b", offset, 2), data);
-}
-
-void fsblk_t::block_t::w24b(u32 offset, u32 data)
-{
-	put_u24be(m_object->offset("w24b", offset, 3), data);
-}
-
-void fsblk_t::block_t::w32b(u32 offset, u32 data)
-{
-	put_u32be(m_object->offset("w32b", offset, 4), data);
-}
-
-void fsblk_t::block_t::w16l(u32 offset, u16 data)
-{
-	put_u16le(m_object->offset("w16l", offset, 2), data);
-}
-
-void fsblk_t::block_t::w24l(u32 offset, u32 data)
-{
-	put_u24le(m_object->offset("w24l", offset, 3), data);
-}
-
-void fsblk_t::block_t::w32l(u32 offset, u32 data)
-{
-	put_u32le(m_object->offset("w32l", offset, 4), data);
-}
-
-std::string_view fsblk_t::block_t::rstr(u32 offset, u32 size) const
-{
-	const u8 *d = m_object->rooffset("rstr", offset, size);
-	return std::string_view(reinterpret_cast<const char *>(d), size);
-}
-
-u8 fsblk_t::block_t::r8(u32 offset) const
-{
-	return m_object->offset("r8", offset, 1)[0];
-}
-
-u16 fsblk_t::block_t::r16b(u32 offset) const
-{
-	return get_u16be(m_object->offset("r16b", offset, 2));
-}
-
-u32 fsblk_t::block_t::r24b(u32 offset) const
-{
-	return get_u24be(m_object->offset("r24b", offset, 3));
-}
-
-u32 fsblk_t::block_t::r32b(u32 offset) const
-{
-	return get_u32be(m_object->offset("r32b", offset, 4));
-}
-
-u16 fsblk_t::block_t::r16l(u32 offset) const
-{
-	return get_u16le(m_object->offset("r16l", offset, 2));
-}
-
-u32 fsblk_t::block_t::r24l(u32 offset) const
-{
-	return get_u24le(m_object->offset("r24l", offset, 3));
-}
-
-u32 fsblk_t::block_t::r32l(u32 offset) const
-{
-	return get_u32le(m_object->offset("r32l", offset, 4));
-}
-
-
-
-void filesystem_t::wstr(u8 *p, std::string_view str)
-{
-	memcpy(p, str.data(), str.size());
-}
-
-std::string_view filesystem_t::rstr(const u8 *p, u32 size)
-{
-	return std::string_view(reinterpret_cast<const char *>(p), size);
-}
-
-std::string_view filesystem_t::trim_end_spaces(std::string_view str)
-{
-	const auto i = str.find_last_not_of(' ');
-	return str.substr(0, (std::string::npos != i) ? (i + 1) : 0);
-}
-
-meta_data filesystem_t::volume_metadata()
-{
-	return meta_data();
-}
-
-err_t filesystem_t::volume_metadata_change(const meta_data &meta)
-{
-	return ERR_UNSUPPORTED;
-}
-
-std::pair<err_t, meta_data> filesystem_t::metadata(const std::vector<std::string> &path)
-{
-	return std::make_pair(ERR_UNSUPPORTED, meta_data());
-}
-
-err_t filesystem_t::metadata_change(const std::vector<std::string> &path, const meta_data &meta)
-{
-	return ERR_UNSUPPORTED;
-}
-
-std::pair<err_t, std::vector<dir_entry>> filesystem_t::directory_contents(const std::vector<std::string> &path)
-{
-	return std::make_pair(ERR_UNSUPPORTED, std::vector<dir_entry>());
-}
-
-err_t filesystem_t::rename(const std::vector<std::string> &opath, const std::vector<std::string> &npath)
-{
-	return ERR_UNSUPPORTED;
-}
-
-err_t filesystem_t::remove(const std::vector<std::string> &path)
-{
-	return ERR_UNSUPPORTED;
-}
-
-err_t filesystem_t::dir_create(const std::vector<std::string> &path, const meta_data &meta)
-{
-	return ERR_UNSUPPORTED;
-}
-
-err_t filesystem_t::file_create(const std::vector<std::string> &path, const meta_data &meta)
-{
-	return ERR_UNSUPPORTED;
-}
-
-std::pair<err_t, std::vector<u8>> filesystem_t::file_read(const std::vector<std::string> &path)
-{
-	return std::make_pair(ERR_UNSUPPORTED, std::vector<u8>());
-}
-
-err_t filesystem_t::file_write(const std::vector<std::string> &path, const std::vector<u8> &data)
-{
-	return ERR_UNSUPPORTED;
-}
-
-std::pair<err_t, std::vector<u8>> filesystem_t::file_rsrc_read(const std::vector<std::string> &path)
-{
-	return std::make_pair(ERR_UNSUPPORTED, std::vector<u8>());
-}
-
-err_t filesystem_t::file_rsrc_write(const std::vector<std::string> &path, const std::vector<u8> &data)
-{
-	return ERR_UNSUPPORTED;
-}
-
-err_t filesystem_t::format(const meta_data &meta)
-{
-	return ERR_UNSUPPORTED;
-}
-
 manager_t::floppy_enumerator::floppy_enumerator(u32 form_factor, const std::vector<u32> &variants)
 	: m_form_factor(form_factor)
 	, m_variants(variants)

src/lib/formats/fsmgr.h

@@ -8,266 +8,20 @@
 
 #pragma once
 
-#include "flopimg.h"
 #include "fsmeta.h"
 
+#include <memory>
+#include <vector>
+
+class floppy_image_format_t;
+
 namespace fs {
 
-using u8  = uint8_t;
+// declared in fsblk.h
-using u16 = uint16_t;
+class filesystem_t;
+class fsblk_t;
+
 using u32 = uint32_t;
-using u64 = uint64_t;
-
-enum err_t {
-	ERR_OK = 0,
-	ERR_UNSUPPORTED,
-	ERR_INVALID,
-	ERR_NOT_FOUND,
-	ERR_NOT_EMPTY,
-	ERR_NO_SPACE,
-};
-
-template<typename T> class refcounted_outer {
-public:
-	refcounted_outer(bool weak) :  m_object(nullptr), m_is_weak_ref(weak) {}
-	refcounted_outer(T *object, bool weak) : m_object(object), m_is_weak_ref(weak) {
-		ref();
-	}
-
-	refcounted_outer(const refcounted_outer &cref) {
-		m_object = cref.m_object;
-		m_is_weak_ref = cref.m_is_weak_ref;
-		ref();
-	}
-
-	refcounted_outer(refcounted_outer &&cref) {
-		m_object = cref.m_object;
-		m_is_weak_ref = cref.m_is_weak_ref;
-		cref.m_object = nullptr;
-	}
-
-	~refcounted_outer() {
-		unref();
-	}
-
-	refcounted_outer<T> &operator =(T *dir) {
-		if(m_object != dir) {
-			unref();
-			m_object = dir;
-			ref();
-		}
-		return *this;
-	}
-
-	refcounted_outer<T> &operator =(const refcounted_outer<T> &cref) {
-		if(m_object != cref.m_object) {
-			unref();
-			m_object = cref.m_object;
-			ref();
-		}
-		return *this;
-	}
-
-	refcounted_outer<T> &operator =(refcounted_outer<T> &&cref) {
-		if(m_object != cref.m_object) {
-			unref();
-			m_object = cref.m_object;
-			ref();
-		} else if(m_is_weak_ref != cref.m_is_weak_ref) {
-			ref();
-			cref.unref();
-			m_object = cref.m_object; // In case the object got deleted (when going from strong ref to weak on the last strong)
-		}
-		cref.m_object = nullptr;
-		return *this;
-	}
-
-	operator bool() const { return m_object != nullptr; }
-
-protected:
-	T *m_object;
-	bool m_is_weak_ref;
-
-private:
-	void ref() {
-		if(m_object) {
-			if(m_is_weak_ref)
-				m_object->ref_weak();
-			else
-				m_object->ref();
-		}
-	}
-
-	void unref() {
-		if(m_object) {
-			bool del = m_is_weak_ref ? m_object->unref_weak() : m_object->unref();
-			if(del)
-				m_object = nullptr;
-		}
-	}
-};
-
-
-class refcounted_inner {
-public:
-	refcounted_inner() : m_ref(0), m_weak_ref(0) {}
-	virtual ~refcounted_inner() = default;
-
-	void ref();
-	void ref_weak();
-	bool unref();
-	bool unref_weak();
-
-	virtual void drop_weak_references() = 0;
-
-public:
-	u32 m_ref, m_weak_ref;
-};
-
-enum class dir_entry_type {
-	dir,
-	file,
-};
-
-struct dir_entry {
-	std::string m_name;
-	dir_entry_type m_type;
-	meta_data m_meta;
-
-	dir_entry(dir_entry_type type, const meta_data &meta) : m_name(meta.get_string(meta_name::name)), m_type(type), m_meta(std::move(meta)) {}
-};
-
-class fsblk_t {
-protected:
-	class iblock_t : public refcounted_inner {
-	public:
-		iblock_t(u32 size) : refcounted_inner(), m_size(size) {}
-		virtual ~iblock_t() = default;
-
-		u32 size() const { return m_size; }
-
-		virtual const u8 *rodata() = 0;
-		virtual u8 *data() = 0;
-		u8 *offset(const char *function, u32 off, u32 size);
-		const u8 *rooffset(const char *function, u32 off, u32 size);
-
-	protected:
-		u32 m_size;
-	};
-
-
-public:
-	class block_t : public refcounted_outer<iblock_t> {
-	public:
-		block_t(bool weak = false) :  refcounted_outer<iblock_t>(weak) {}
-		block_t(iblock_t *block, bool weak = true) : refcounted_outer(block, weak) {}
-		virtual ~block_t() = default;
-
-		block_t strong() { return block_t(m_object, false); }
-		block_t weak() { return block_t(m_object, true); }
-
-		u32 size() const { return m_object->size(); }
-
-		const u8 *rodata() const { return m_object->rodata(); }
-		u8 *data() { return m_object->data(); }
-
-		void copy(u32 offset, const u8 *src, u32 size);
-		void fill(            u8 data);
-		void fill(u32 offset, u8 data, u32 size);
-		void wstr(u32 offset, std::string_view str);
-		void w8(  u32 offset, u8 data);
-		void w16b(u32 offset, u16 data);
-		void w24b(u32 offset, u32 data);
-		void w32b(u32 offset, u32 data);
-		void w16l(u32 offset, u16 data);
-		void w24l(u32 offset, u32 data);
-		void w32l(u32 offset, u32 data);
-
-		std::string_view rstr(u32 offset, u32 size) const;
-		u8  r8(  u32 offset) const;
-		u16 r16b(u32 offset) const;
-		u32 r24b(u32 offset) const;
-		u32 r32b(u32 offset) const;
-		u16 r16l(u32 offset) const;
-		u32 r24l(u32 offset) const;
-		u32 r32l(u32 offset) const;
-	};
-
-	fsblk_t() : m_block_size(0) {}
-	virtual ~fsblk_t() = default;
-
-	virtual void set_block_size(u32 block_size);
-	virtual u32 block_count() const = 0;
-	virtual block_t get(u32 id) = 0;
-	virtual void fill(u8 data) = 0;
-
-protected:
-	u32 m_block_size;
-};
-
-
-class filesystem_t {
-public:
-	virtual ~filesystem_t() = default;
-
-	// Get the metadata for the volume
-	virtual meta_data volume_metadata();
-
-	// Change the metadata for the volume
-	virtual err_t volume_metadata_change(const meta_data &meta);
-
-	// Get the metadata for a file or a directory.  Empty path targets the root directory
-	virtual std::pair<err_t, meta_data> metadata(const std::vector<std::string> &path);
-
-	// Change the metadata for a file or a directory.  Empty path targets the root directory
-	virtual err_t metadata_change(const std::vector<std::string> &path, const meta_data &meta);
-
-	// Get the contents of a directory, empty path targets the root directory
-	virtual std::pair<err_t, std::vector<dir_entry>> directory_contents(const std::vector<std::string> &path);
-
-	// Rename a file or a directory.  In contrast to metadata_change, this can move the object
-	// between directories
-	virtual err_t rename(const std::vector<std::string> &opath, const std::vector<std::string> &npath);
-
-	// Remove a file or a directory.  Directories must be empty (e.g. it's not recursive)
-	virtual err_t remove(const std::vector<std::string> &path);
-
-	// Create a directory, path designates where the directory must be, directory name is in meta
-	virtual err_t dir_create(const std::vector<std::string> &path, const meta_data &meta);
-
-	// Create an empty file, path designates where the file must be, file name is in meta
-	virtual err_t file_create(const std::vector<std::string> &path, const meta_data &meta);
-
-	// Read the contents of a file
-	virtual std::pair<err_t, std::vector<u8>> file_read(const std::vector<std::string> &path);
-
-	// Replace the contents of a file, the file must already exist
-	virtual err_t file_write(const std::vector<std::string> &path, const std::vector<u8> &data);
-
-	// Read the resource fork of a file on systems that handle those
-	virtual std::pair<err_t, std::vector<u8>> file_rsrc_read(const std::vector<std::string> &path);
-
-	// Replace the resource fork of a file, the file must already exist
-	virtual err_t file_rsrc_write(const std::vector<std::string> &path, const std::vector<u8> &data);
-
-	// Format an image, provide the volume metadata
-	virtual err_t format(const meta_data &meta);
-
-	static void wstr(u8 *p, std::string_view str);
-
-	static std::string_view rstr(const u8 *p, u32 size);
-
-	static std::string_view trim_end_spaces(std::string_view str);
-
-protected:
-	filesystem_t(fsblk_t &blockdev, u32 size) : m_blockdev(blockdev) {
-		m_blockdev.set_block_size(size);
-	}
-
-	fsblk_t &m_blockdev;
-};
-
-class unformatted_floppy_creator;
 
 class manager_t {
 public:
@@ -301,7 +55,6 @@ public:
 		virtual void add(const manager_t *manager, const char *name, const char *description) = 0;
 	};
 
-
 	virtual ~manager_t() = default;
 
 	virtual const char *name() const = 0;

src/tools/floptool.cpp

@@ -8,6 +8,8 @@
 
 #include "image_handler.h"
 
+#include "formats/fsblk.h"
+
 #include "corestr.h"
 #include "ioprocs.h"
 #include "path.h"

src/tools/image_handler.h

@@ -8,6 +8,7 @@
 
 #pragma once
 
+#include "formats/flopimg.h"
 #include "formats/fsmgr.h"
 #include "harddisk.h"