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use std::borrow::Cow;
use std::error::Error as StdError;
use std::fmt::{self, Display};
use std::io;
use std::string::FromUtf8Error;
use super::{httparse, hyper};
pub enum Error {
NoRequestContentType,
NotMultipart,
BoundaryNotSpecified,
PartialHeaders,
EofInMainHeaders,
EofBeforeFirstBoundary,
NoCrLfAfterBoundary,
EofInPartHeaders,
EofInFile,
EofInPart,
Httparse(httparse::Error),
Io(io::Error),
Hyper(hyper::Error),
Utf8(FromUtf8Error),
Decoding(Cow<'static, str>),
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Error {
Error::Io(err)
}
}
impl From<httparse::Error> for Error {
fn from(err: httparse::Error) -> Error {
Error::Httparse(err)
}
}
impl From<hyper::Error> for Error {
fn from(err: hyper::Error) -> Error {
Error::Hyper(err)
}
}
impl From<FromUtf8Error> for Error {
fn from(err: FromUtf8Error) -> Error {
Error::Utf8(err)
}
}
impl Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::Httparse(ref e) =>
format!("{}: {:?}", self.description(), e).fmt(f),
Error::Io(ref e) =>
format!("{}: {}", self.description(), e).fmt(f),
Error::Hyper(ref e) =>
format!("{}: {}", self.description(), e).fmt(f),
Error::Utf8(ref e) =>
format!("{}: {}", self.description(), e).fmt(f),
Error::Decoding(ref e) =>
format!("{}: {}", self.description(), e).fmt(f),
_ => format!("{}", self.description()).fmt(f),
}
}
}
impl fmt::Debug for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
try!( f.write_str(&*self.description()) );
if self.cause().is_some() {
try!( write!(f, ": {:?}", self.cause().unwrap()) );
}
Ok(())
}
}
impl StdError for Error {
fn description(&self) -> &str{
match *self {
Error::NoRequestContentType => "The Hyper request did not have a Content-Type header.",
Error::NotMultipart =>
"The Hyper request Content-Type top-level Mime was not multipart.",
Error::BoundaryNotSpecified =>
"The Content-Type header failed to specify a boundary token.",
Error::PartialHeaders =>
"A multipart section contained only partial headers.",
Error::EofInMainHeaders =>
"The request headers ended pre-maturely.",
Error::EofBeforeFirstBoundary =>
"The request body ended prior to reaching the expected starting boundary.",
Error::NoCrLfAfterBoundary =>
"Missing CRLF after boundary.",
Error::EofInPartHeaders =>
"The request body ended prematurely while parsing headers of a multipart part.",
Error::EofInFile =>
"The request body ended prematurely while streaming a file part.",
Error::EofInPart =>
"The request body ended prematurely while reading a multipart part.",
Error::Httparse(_) =>
"A parse error occurred while parsing the headers of a multipart section.",
Error::Io(_) => "An I/O error occurred.",
Error::Hyper(_) => "A Hyper error occurred.",
Error::Utf8(_) => "A UTF-8 error occurred.",
Error::Decoding(_) => "A decoding error occurred.",
}
}
}