image_blp/parser/
error.rs

1use nom::error::{ContextError, ErrorKind, ParseError};
2use std::fmt;
3use thiserror::Error;
4
5/// Errors that appears when loading from filesystem
6#[derive(Debug, Error)]
7pub enum LoadError {
8    #[error("{0}")]
9    Parsing(String),
10    #[error("File system error with file {0}, due: {1}")]
11    FileSystem(std::path::PathBuf, std::io::Error),
12    #[error("Input stream is incomplete, needed: {0:?}")]
13    Incomplete(nom::Needed),
14    #[error("Cannot derive mipmap name for {0}")]
15    InvalidFilename(std::path::PathBuf),
16}
17
18/// Errors that BLP parser can produce
19#[derive(Debug, Error)]
20pub enum Error<I: fmt::Debug> {
21    #[error("Unexpected magic value {0}. The file format is not BLP or not supported.")]
22    WrongMagic(String),
23    #[error("Failed to extract external mipmap number {0} with error {1}")]
24    ExternalMipmap(usize, Box<dyn std::error::Error>),
25    #[error("There is no body of image for BLP0 mipmap number {0}")]
26    MissingImage(usize),
27    #[error("Part of image exceeds bounds of file for mipmap number {0}")]
28    OutOfBounds(usize),
29    #[error("BLP2 doesn't support external mipmaps")]
30    Blp2NoExternalMips,
31    #[error("Library doesn't support compression tag: {0}")]
32    Blp2UnknownCompression(u8),
33    #[error("Library doesn't support alpha type: {0}")]
34    Blp2UnknownAlphaType(u8),
35    #[error("Impossible branch, JPEG compression but direct content type")]
36    Blp2UnexpectedJpegCompression,
37    #[error("Error {1:?} at: {0:?}")]
38    Nom(I, ErrorKind),
39    #[error("Context: {0}. Error: {1}")]
40    Context(String, Box<Self>),
41}
42
43impl<'a> From<(&'a [u8], ErrorKind)> for Error<&'a [u8]> {
44    fn from((input, kind): (&'a [u8], ErrorKind)) -> Self {
45        Error::Nom(input, kind)
46    }
47}
48
49impl<'a> ParseError<&'a [u8]> for Error<&'a [u8]> {
50    fn from_error_kind(input: &'a [u8], kind: ErrorKind) -> Self {
51        Error::Nom(input, kind)
52    }
53
54    fn append(_: &[u8], _: ErrorKind, other: Self) -> Self {
55        other
56    }
57}
58
59impl<'a> ContextError<&'a [u8]> for Error<&'a [u8]> {
60    fn add_context(_input: &'a [u8], ctx: &'static str, other: Self) -> Self {
61        Error::Context(ctx.to_owned(), Box::new(other))
62    }
63}
image_blp/parser/error.rs

image_blp/parser/
error.rs
