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Implement std::filesystem::space().

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This commit is contained in:
Jared Boone 2016-05-11 10:58:57 -07:00
parent c48a88539a
commit f157c13442
2 changed files with 30 additions and 0 deletions
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18
firmware/application/file.cpp
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@ -164,5 +164,23 @@ bool is_regular_file(const file_status s) {
return !(s & AM_DIR);
}
space_info space(const path& p) {
DWORD free_clusters { 0 };
FATFS* fs;
if( f_getfree(p.c_str(), &free_clusters, &fs) == FR_OK ) {
#if _MAX_SS != _MIN_SS
static_assert(false, "FatFs not configured for fixed sector size");
#else
return {
(fs->n_fatent - 2) * fs->csize * _MIN_SS,
free_clusters * fs->csize * _MIN_SS,
free_clusters * fs->csize * _MIN_SS,
};
#endif
} else {
return { 0, 0, 0 };
}
}
} /* namespace filesystem */
} /* namespace std */