actix-web/actix-files/src/error.rs

use actix_web::{http::StatusCode, HttpResponse, ResponseError};
use derive_more::Display;

/// Errors which can occur when serving static files.
#[derive(Display, Debug, PartialEq)]
pub enum FilesError {
    /// Path is not a directory
    #[display(fmt = "Path is not a directory. Unable to serve static files")]
    IsNotDirectory,

    /// Cannot render directory
    #[display(fmt = "Unable to render directory without index file")]
    IsDirectory,
}

/// Return `NotFound` for `FilesError`
impl ResponseError for FilesError {
    fn error_response(&self) -> HttpResponse {
        HttpResponse::new(StatusCode::NOT_FOUND)
    }
}

#[derive(Display, Debug, PartialEq)]
pub enum UriSegmentError {
    /// The segment started with the wrapped invalid character.
    #[display(fmt = "The segment started with the wrapped invalid character")]
    BadStart(char),
    /// The segment contained the wrapped invalid character.
    #[display(fmt = "The segment contained the wrapped invalid character")]
    BadChar(char),
    /// The segment ended with the wrapped invalid character.
    #[display(fmt = "The segment ended with the wrapped invalid character")]
    BadEnd(char),
}

/// Return `BadRequest` for `UriSegmentError`
impl ResponseError for UriSegmentError {
    fn error_response(&self) -> HttpResponse {
        HttpResponse::new(StatusCode::BAD_REQUEST)
    }
}