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#![allow(dead_code)]
use std::{io, slice, str};
use std::fmt::{self,Write};
use std::str::FromStr;
use unicase::UniCase;
use http::date;
use Body;
use Headers;
use StatusCode;
#[derive(Clone, Debug)]
pub struct Response {
pub headers: Headers,
pub body: Body,
pub status_message: StatusMessage,
pub code: u16,
pub message: String,
}
#[derive(Clone, Debug)]
pub enum StatusMessage {
Ok,
Custom(u16, String)
}
impl Response {
pub fn new() -> Response {
let status = StatusCode::Ok;
let res = Response {
headers: Headers::new(),
body: Body::new(),
status_message: StatusMessage::Custom(status.to_u16(), status.canonical_reason().unwrap_or("").to_string()),
code: status.to_u16(),
message: status.canonical_reason().unwrap_or("").to_string(),
};
res
}
#[inline]
pub fn with_body(mut self, body: Body) -> Self {
self.body = body;
self
}
#[inline]
pub fn with_header(mut self, name: &str, val: &str) -> Self {
self.headers.push((name.to_string(), val.to_string()));
self
}
#[inline]
pub fn with_status(mut self, code: StatusCode) -> Self {
self.code = code.to_u16();
self.message = code.canonical_reason().clone().unwrap_or("").to_string();
self.status_message = StatusMessage::Custom(code.to_u16(), code.canonical_reason().unwrap_or("").to_string());
self
}
pub fn status_code(mut self, code: u16, message: &str) -> Self {
self.code = code;
self.message = message.clone().to_string();
self.status_message = StatusMessage::Custom(code, message.to_string());
self
}
pub fn content_length(&self) -> u64 {
match self.header("content-length") {
Some(len) => len.parse::<u64>().unwrap_or(0),
None => 0,
}
}
pub fn header(&self, key: &str) -> Option<&str> {
match self.headers.iter().find(|&&(ref k, ref v)| UniCase(k) == UniCase(key)) {
Some(&(ref key, ref value)) => Some(str::from_utf8(value.as_bytes()).unwrap_or("")),
None => None
}
}
}
pub fn encode(res: &Response, buf: &mut Vec<u8>) {
let length = res.body.len();
let now = date::now();
write!(FastWrite(buf), "\
HTTP/1.1 {}\r\n\
Date: {}\r\n\
", res.status_message, now).unwrap();
for &(ref k, ref v) in &res.headers {
buf.extend_from_slice(k.as_bytes());
buf.extend_from_slice(b": ");
buf.extend_from_slice(v.as_bytes());
buf.extend_from_slice(b"\r\n");
}
buf.extend_from_slice(b"\r\n");
buf.extend_from_slice(&res.body[..]);
}
struct FastWrite<'a>(&'a mut Vec<u8>);
impl<'a> fmt::Write for FastWrite<'a> {
fn write_str(&mut self, s: &str) -> fmt::Result {
self.0.extend_from_slice(s.as_bytes());
Ok(())
}
fn write_fmt(&mut self, args: fmt::Arguments) -> fmt::Result {
fmt::write(self, args)
}
}
impl fmt::Display for StatusMessage {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
StatusMessage::Ok => f.pad("200 OK"),
StatusMessage::Custom(c, ref s) => write!(f, "{} {}", c, s),
}
}
}