1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80
use std::{error::Error, fmt, io}; #[derive(Debug)] pub enum CompressError { IOErr(io::Error), Overflow, Malformed, } #[derive(Debug)] pub enum DecompressError { IOErr(io::Error), Unsupported, Underflow, Malformed, TypeMismatch, } impl From<io::Error> for CompressError { fn from(err: io::Error) -> Self { CompressError::IOErr(err) } } impl fmt::Display for CompressError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { CompressError::IOErr(e) => write!(f, "{}", e), CompressError::Overflow => write!(f, "Buffer is too small"), CompressError::Malformed => write!(f, "Invalid arguments"), } } } impl Error for CompressError {} impl From<io::Error> for DecompressError { fn from(err: io::Error) -> Self { DecompressError::IOErr(err) } } impl fmt::Display for DecompressError { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { DecompressError::IOErr(e) => write!(f, "{}", e), DecompressError::Unsupported => write!(f, "Unsupported image format"), DecompressError::Malformed => write!(f, "Invalid arguments"), DecompressError::Underflow => write!(f, "Buffer underflow detected"), DecompressError::TypeMismatch => write!(f, "Image data doesn't match the header"), } } } impl Error for DecompressError {} #[derive(Debug)] pub enum HeaderErr { IOErr(io::Error), WrongMagic, WrongValue(String), } impl From<io::Error> for HeaderErr { fn from(err: io::Error) -> HeaderErr { HeaderErr::IOErr(err) } } impl fmt::Display for HeaderErr { fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { match self { HeaderErr::IOErr(e) => write!(f, "{}", e), HeaderErr::WrongMagic => write!(f, "Header doesn't contain GFWX magic"), HeaderErr::WrongValue(e) => write!(f, "Invalid filed value in header: {}", e), } } } impl Error for HeaderErr {}