Fast and robust atproto CAR file processing in rust
commit fingerprint: upper 3 bits not upper nibble
righttttttttttt
+5
-2
+5
-2
src/mst.rs
+5
-2
src/mst.rs
···
67
67
0xA2, // map length 2 (for "l" and "e" keys)
68
68
0x61, // text length 1
69
69
b'e', // "e" before "l" because map keys have to be lex-sorted
70
-
// 0x8?: "e" contains an array (0x8 nibble) of some length (low nib)
70
+
// 0x8?: "e" has array (0x100 upper 3 bits) of some length
71
71
];
72
72
let bytes = bytes.as_ref();
73
73
bytes.starts_with(&NODE_FINGERPRINT)
74
-
// && bytes.get(3).map(|b| b & 0xF0 == 0x80).unwrap_or(false)
74
+
&& bytes
75
+
.get(3)
76
+
.map(|b| b & 0b1110_0000 == 0x80)
77
+
.unwrap_or(false)
75
78
}
76
79
77
80
/// Check if a node has any entries