error_t FAT::int_ls(uint32_t sector, dirvector& ents) const
{
bool done = false;
do {
// read sector sync
buffer_t data = device.read_sync(sector);
if (UNLIKELY(!data))
return { error_t::E_IO, "Unable to read directory" };
// parse directory into @ents
done = int_dirent(sector, data->data(), ents);
// go to next sector until done
sector++;
} while (!done);
return no_error;
}
void FAT::int_ls(
uint32_t sector,
dirvec_t dirents,
on_internal_ls_func callback)
{
// list contents of meme sector by sector
typedef std::function<void(uint32_t)> next_func_t;
auto next = std::make_shared<next_func_t> ();
*next =
[this, sector, callback, dirents, next] (uint32_t sector)
{
debug("int_ls: sec=%u\n", sector);
device.read(sector,
[this, sector, callback, dirents, next] (buffer_t data)
{
if (!data)
{
// could not read sector
callback(true, dirents);
return;
}
// parse entries in sector
bool done = int_dirent(sector, data.get(), dirents);
if (done)
{
// execute callback
callback(no_error, dirents);
}
else
{
// go to next sector
(*next)(sector+1);
}
}); // read root dir
};
// start reading sectors asynchronously
(*next)(sector);
}
void FAT::int_ls(
uint32_t sector,
Dirvec_ptr dirents,
on_internal_ls_func callback) const
{
// list contents of meme sector by sector
typedef delegate<void(uint32_t)> next_func_t;
auto next = std::make_shared<next_func_t> ();
auto weak_next = std::weak_ptr<next_func_t>(next);
*next = next_func_t::make_packed(
[this, callback, dirents, weak_next] (uint32_t sector)
{
FS_PRINT("int_ls: sec=%u\n", sector);
auto next = weak_next.lock();
device.read(
sector,
hw::Block_device::on_read_func::make_packed(
[this, sector, callback, dirents, next] (buffer_t data)
{
if (data == nullptr) {
// could not read sector
callback({ error_t::E_IO, "Unable to read directory" }, dirents);
return;
}
// parse entries in sector
bool done = int_dirent(sector, data->data(), *dirents);
if (done)
// execute callback
callback(no_error, dirents);
else
// go to next sector
(*next)(sector+1);
})
); // read root dir
});
// start reading sectors asynchronously
(*next)(sector);
}
