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use std;
use std::collections::HashMap;
use std::ffi::OsString;
use std::fmt;
use byteorder;
use walkdir;
use information_element::{InformationElementType, InformationElement};
#[derive(Debug)]
pub enum Error {
Byteorder(byteorder::Error),
Io(std::io::Error),
InvalidImei,
InvalidProtocolRevisionNumber(u8),
MissingMobileOriginatedHeader,
MissingMobileOriginatedPayload,
NotADirectory(OsString),
Oversized,
Undersized(usize),
UnhandledInformationElements(HashMap<InformationElementType, InformationElement>),
Utf8(std::str::Utf8Error),
WalkDir(walkdir::Error),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Byteorder(ref err) => write!(f, "Byteorder error: {}", err),
Error::Io(ref err) => write!(f, "IO error: {}", err),
Error::InvalidImei => write!(f, "Invalid IMEI number"),
Error::InvalidProtocolRevisionNumber(number) => {
write!(f, "Invalid protocol revision number: {}", number)
}
Error::MissingMobileOriginatedHeader => write!(f, "Missing mobile origianted header"),
Error::MissingMobileOriginatedPayload => write!(f, "Missing mobile orignated payload"),
Error::NotADirectory(ref path) => {
write!(f,
"Not a directory: {}",
path.clone().into_string().unwrap_or("<undisplayable path>".to_string()))
}
Error::Oversized => write!(f, "Oversized message"),
Error::Undersized(size) => write!(f, "Undersized message: {}", size),
Error::UnhandledInformationElements(ref ies) => {
write!(f, "Unhandled information elements: {:?}", ies)
}
Error::Utf8(ref err) => write!(f, "Utf8 error: {}", err),
Error::WalkDir(ref err) => write!(f, "WalkDir error: {}", err),
}
}
}
impl std::error::Error for Error {
fn description(&self) -> &str {
match *self {
Error::Byteorder(ref err) => err.description(),
Error::Io(ref err) => err.description(),
Error::InvalidImei => "invalid IMEI number",
Error::InvalidProtocolRevisionNumber(_) => "invalid protocol revision number",
Error::MissingMobileOriginatedHeader => "missing mobile originated header",
Error::MissingMobileOriginatedPayload => "missing mobile originated payload",
Error::NotADirectory(_) => "directory expected but it wasn't",
Error::Oversized => "oversized message",
Error::Undersized(_) => "undersized message",
Error::UnhandledInformationElements(_) => "unhandled information elements",
Error::Utf8(ref err) => err.description(),
Error::WalkDir(ref err) => err.description(),
}
}
fn cause(&self) -> Option<&std::error::Error> {
match *self {
Error::Byteorder(ref err) => Some(err),
Error::Io(ref err) => Some(err),
Error::Utf8(ref err) => Some(err),
Error::WalkDir(ref err) => Some(err),
_ => None,
}
}
}
impl From<byteorder::Error> for Error {
fn from(err: byteorder::Error) -> Error {
Error::Byteorder(err)
}
}
impl From<std::io::Error> for Error {
fn from(err: std::io::Error) -> Error {
Error::Io(err)
}
}
impl From<walkdir::Error> for Error {
fn from(err: walkdir::Error) -> Error {
Error::WalkDir(err)
}
}
impl From<std::str::Utf8Error> for Error {
fn from(err: std::str::Utf8Error) -> Error {
Error::Utf8(err)
}
}