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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
// Filesystem management code for floppy and hd images
// Currently limited to floppies and creation of preformatted images
#include "fsmgr.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
{
}
void manager_t::enumerate_h(hd_enumerator &he) const
{
}
void manager_t::enumerate_c(cdrom_enumerator &ce) const
{
}
bool manager_t::has_variant(const std::vector<u32> &variants, u32 variant)
{
for(u32 v : variants)
if(variant == v)
return true;
return false;
}
bool manager_t::has(u32 form_factor, const std::vector<u32> &variants, u32 ff, u32 variant)
{
if(form_factor == floppy_image::FF_UNKNOWN)
return true;
if(form_factor != ff)
return false;
for(u32 v : variants)
if(variant == v)
return true;
return false;
}
std::vector<meta_description> manager_t::volume_meta_description() const
{
std::vector<meta_description> res;
return res;
}
std::vector<meta_description> manager_t::file_meta_description() const
{
std::vector<meta_description> res;
return res;
}
std::vector<meta_description> manager_t::directory_meta_description() const
{
std::vector<meta_description> res;
return res;
}
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)
{
}
void manager_t::floppy_enumerator::add(const floppy_image_format_t &type, u32 form_factor, u32 variant, u32 image_size, const char *name, const char *description)
{
if (has(m_form_factor, m_variants, form_factor, variant))
add_format(type, image_size, name, description);
}
} // namespace fs
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