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macro_rules! try_read {
($cursor: ident, u8) => {
$cursor.read_u8().context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "u8",
})?;
};
($cursor: ident, i8) => {
$cursor.read_i8().context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "i8",
})?;
};
($cursor: ident, u16) => {
$cursor
.read_u16::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "u16",
})?;
};
($cursor: ident, i16) => {
$cursor
.read_i16::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "i16",
})?;
};
($cursor: ident, i32) => {
$cursor
.read_i32::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "i32",
})?;
};
($cursor: ident, u32) => {
$cursor
.read_u32::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "u32",
})?;
};
($cursor: ident, f32) => {
$cursor
.read_f32::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "f32",
})?;
};
($cursor: ident, i64) => {
$cursor
.read_i64::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "i64",
})?;
};
($cursor: ident, u64) => {
$cursor
.read_u64::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "u64",
})?;
};
($cursor: ident, f64) => {
$cursor
.read_f64::<byteorder::LittleEndian>()
.context(err::FailedToRead {
offset: $cursor.tell().unwrap(),
t: "f64",
})?;
};
($cursor: ident, bool) => {{
let bool_value = try_read!($cursor, i32);
match bool_value {
0 => false,
1 => true,
_ => {
log::warn!(
"{:?} is an unknown value for bool, coercing to `true`",
bool_value
);
true
}
}
}};
($cursor: ident, guid) => {
Guid::from_stream($cursor).context(err::FailedToReadGUID {
offset: $cursor.position(),
})?
};
($cursor: ident, utf_16_str) => {{
let s = read_len_prefixed_utf16_string($cursor, false)
.context(err::FailedToDecodeUTF16String {
offset: $cursor.position(),
})?
.unwrap_or_else(|| "".to_owned());
Cow::Owned(s)
}};
($cursor: ident, null_terminated_utf_16_str) => {{
let s =
read_null_terminated_utf16_string($cursor).context(err::FailedToDecodeUTF16String {
offset: $cursor.position(),
})?;
Cow::Owned(s)
}};
($cursor: ident, sid) => {
Sid::from_stream($cursor).context(err::FailedToReadNTSID {
offset: $cursor.position(),
})?
};
($cursor: ident, hex32) => {
Cow::Owned(format!("0x{:x}", try_read!($cursor, i32)))
};
($cursor: ident, hex64) => {
Cow::Owned(format!("0x{:x}", try_read!($cursor, i64)))
};
($cursor: ident, filetime) => {
datetime_from_filetime(try_read!($cursor, u64))
};
($cursor: ident, systime) => {
read_systemtime($cursor)?
};
}
macro_rules! try_read_sized_array {
($cursor: ident, $unit: ident, $size: ident) => {{
let mut array = vec![];
let start_pos = $cursor.position();
loop {
if ($cursor.position() - start_pos) >= u64::from($size) {
break;
}
let val = try_read!($cursor, $unit);
array.push(val);
}
array
}};
}