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use std::io::Read;
use crate::{
result::{ZipError, ZipResult},
unstable::LittleEndianReadExt,
};
/// The NTFS extra field as described in [PKWARE's APPNOTE.TXT v6.3.9].
///
/// This field stores [Windows file times], which are 64-bit unsigned integer
/// values that represents the number of 100-nanosecond intervals that have
/// elapsed since "1601-01-01 00:00:00 UTC".
///
#[derive(Clone, Debug)]
pub struct Ntfs {
mtime: u64,
atime: u64,
ctime: u64,
}
impl Ntfs {
/// Creates a NTFS extra field struct by reading the required bytes from the
/// reader.
///
/// This method assumes that the length has already been read, therefore it
/// must be passed as an argument.
pub fn try_from_reader<R>(reader: &mut R, len: u16) -> ZipResult<Self>
where
R: Read,
{
if len != 32 {
return Err(ZipError::UnsupportedArchive(
"NTFS extra field has an unsupported length",
));
}
// Read reserved for future use.
let _ = reader.read_u32_le()?;
let tag = reader.read_u16_le()?;
if tag != 0x0001 {
return Err(ZipError::UnsupportedArchive(
"NTFS extra field has an unsupported attribute tag",
));
}
let size = reader.read_u16_le()?;
if size != 24 {
return Err(ZipError::UnsupportedArchive(
"NTFS extra field has an unsupported attribute size",
));
}
let mtime = reader.read_u64_le()?;
let atime = reader.read_u64_le()?;
let ctime = reader.read_u64_le()?;
Ok(Self {
mtime,
atime,
ctime,
})
}
/// Returns the file last modification time as a file time.
pub fn mtime(&self) -> u64 {
self.mtime
}
/// Returns the file last modification time as a file time.
#[cfg(feature = "nt-time")]
pub fn modified_file_time(&self) -> nt_time::FileTime {
nt_time::FileTime::new(self.mtime)
}
/// Returns the file last access time as a file time.
pub fn atime(&self) -> u64 {
self.atime
}
/// Returns the file last access time as a file time.
#[cfg(feature = "nt-time")]
pub fn accessed_file_time(&self) -> nt_time::FileTime {
nt_time::FileTime::new(self.atime)
}
/// Returns the file creation time as a file time.
pub fn ctime(&self) -> u64 {
self.ctime
}
/// Returns the file creation time as a file time.
#[cfg(feature = "nt-time")]
pub fn created_file_time(&self) -> nt_time::FileTime {
nt_time::FileTime::new(self.ctime)
}
}