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pub use std::path::{Path, PathBuf};
pub enum FileError {
InvalidExtension,
NotFound,
NotReadable,
IsADirectory,
InvalidUtf8,
Unknown,
}
impl std::fmt::Debug for FileError {
fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
let message = match self {
Self::InvalidExtension => "File has invalid extension",
Self::NotFound => "File was not found",
Self::InvalidUtf8 => "File does not contain valid UTF-8 text",
Self::NotReadable => "File is not readable",
Self::IsADirectory => "File is a directory",
Self::Unknown => "Unknown error while attempting to read from path",
};
write!(f, "{message}")
}
}
pub fn read_file(path: &Path) -> Result<String, FileError> {
match std::fs::read(&path) {
Ok(bytes) => match String::from_utf8(bytes) {
Ok(source) => Ok(source),
Err(_) => return Err(FileError::InvalidUtf8),
}
Err(err) => return Err( match err.kind() {
std::io::ErrorKind::NotFound => FileError::NotFound,
std::io::ErrorKind::PermissionDenied => FileError::NotReadable,
std::io::ErrorKind::IsADirectory => FileError::IsADirectory,
_ => FileError::Unknown,
} )
}
}
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