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// Copyright 2021 Colin Finck <colin@reactos.org>
// SPDX-License-Identifier: MIT OR Apache-2.0
use binread::BinRead;
use core::fmt;
/// Size of a single GUID on disk (= size of all GUID fields).
pub(crate) const GUID_SIZE: usize = 16;
/// A Globally Unique Identifier (GUID), used for Object IDs in NTFS.
#[derive(BinRead, Clone, Debug, Eq, PartialEq)]
pub struct NtfsGuid {
pub data1: u32,
pub data2: u16,
pub data3: u16,
pub data4: [u8; 8],
}
impl fmt::Display for NtfsGuid {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"{:8X}-{:4X}-{:4X}-{:2X}{:2X}-{:2X}{:2X}{:2X}{:2X}{:2X}{:2X}",
self.data1,
self.data2,
self.data3,
self.data4[0],
self.data4[1],
self.data4[2],
self.data4[3],
self.data4[4],
self.data4[5],
self.data4[6],
self.data4[7]
)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_guid() {
let guid = NtfsGuid {
data1: 0x67c8770b,
data2: 0x44f1,
data3: 0x410a,
data4: [0xab, 0x9a, 0xf9, 0xb5, 0x44, 0x6f, 0x13, 0xee],
};
let guid_string = guid.to_string();
assert_eq!(guid_string, "67C8770B-44F1-410A-AB9A-F9B5446F13EE");
}
}
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