84 lines
1.7 KiB
Rust
84 lines
1.7 KiB
Rust
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use bytes::Buf;
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use std::fmt;
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use std::io::Cursor;
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use std::num::TryFromIntError;
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use std::string::FromUtf8Error;
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use tracing::{debug, error, info};
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#[derive(Clone, Debug)]
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pub enum Frame {}
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#[derive(Debug)]
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pub enum Error {
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Incomplete,
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Other(crate::Error),
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}
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impl Frame {
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pub fn check(src: &mut Cursor<&[u8]>) -> Result<(), Error> {
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unimplemented!()
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}
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pub fn parse(src: &mut Cursor<&[u8]>) -> Result<Frame, Error> {
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unimplemented!()
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}
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}
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fn get_decimal(src: &[u8]) -> Result<i32, Error> {
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debug!(?src);
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if let Ok(number) = <[u8; 4]>::try_from(src) {
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return Ok(i32::from_be_bytes(number));
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};
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Err("protocol error; invalid frame format".into())
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}
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fn get_u8(src: &mut Cursor<&[u8]>) -> Result<u8, Error> {
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if !src.has_remaining() {
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error!("Incomplete frame");
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return Err(Error::Incomplete);
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}
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Ok(src.get_u8())
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}
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fn get_line<'a>(src: &mut Cursor<&'a [u8]>) -> Result<&'a [u8], Error> {
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unimplemented!()
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}
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impl From<String> for Error {
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fn from(src: String) -> Error {
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Error::Other(src.into())
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}
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}
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impl From<&str> for Error {
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fn from(src: &str) -> Error {
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src.to_string().into()
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}
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}
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impl From<FromUtf8Error> for Error {
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fn from(_src: FromUtf8Error) -> Error {
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"protocol error; invalid frame format".into()
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}
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}
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impl From<TryFromIntError> for Error {
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fn from(_src: TryFromIntError) -> Error {
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"protocol error; invalid frame format".into()
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}
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}
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impl std::error::Error for Error {}
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impl fmt::Display for Error {
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fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
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match self {
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Error::Incomplete => "stream ended early".fmt(fmt),
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Error::Other(err) => err.fmt(fmt),
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}
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}
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}
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