M-Labs/rust-fatfs
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Fix decoding 0xE5 character in first byte of short name

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This commit is contained in:
Rafał Harabień 2018-06-25 00:16:14 +02:00
parent be96ba8122
commit f9ca0f95ce
1 changed files with 11 additions and 0 deletions
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11
src/dir_entry.rs
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@ -38,6 +38,7 @@ pub(crate) const LFN_PART_LEN: usize = 13;
pub(crate) const DIR_ENTRY_SIZE: u64 = 32;
pub(crate) const DIR_ENTRY_FREE_FLAG: u8 = 0xE5;
pub(crate) const LFN_ENTRY_LAST_FLAG: u8 = 0x40;
pub(crate) const LFN_ENTRY_REALLY_E5_FLAG: u8 = 0x05;
/// Decoded file short name
#[derive(Clone, Debug, Default)]
@ -64,6 +65,10 @@ impl ShortName {
// No extension - return length of name part
name_len
};
// FAT encodes character 0xE5 as 0x05 because 0xE5 marks deleted files
if name[0] == LFN_ENTRY_REALLY_E5_FLAG {
name[0] = 0xE5;
}
// Short names in FAT filesystem are encoded in OEM code-page
ShortName {
name,
@ -798,6 +803,12 @@ mod tests {
assert_eq!(ShortName::new(&raw_short_name).to_string(), "LOOK AT");
}
#[test]
fn short_name_05_changed_to_e5() {
let raw_short_name = [0x05;11];
assert_eq!(ShortName::new(&raw_short_name).as_bytes(), [0xE5, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, 0x05, '.' as u8, 0x05, 0x05, 0x05]);
}
#[test]
fn lowercase_short_name() {
let mut raw_short_name = [0u8;11];