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// Copyright 2013-2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
// ignore-test needs networking
extern crate extra;
use extra::net::tcp::TcpSocketBuf;
use std::io;
use std::int;
use std::io::{ReaderUtil,WriterUtil};
enum Result {
Nil,
Int(int),
Data(~[u8]),
List(~[Result]),
Error(String),
Status(String)
}
priv fn parse_data(len: uint, io: @io::Reader) -> Result {
let res =
if (len > 0) {
let bytes = io.read_bytes(len as uint);
assert_eq!(bytes.len(), len);
Data(bytes)
} else {
Data(~[])
};
assert_eq!(io.read_char(), '\r');
assert_eq!(io.read_char(), '\n');
return res;
}
priv fn parse_list(len: uint, io: @io::Reader) -> Result {
let mut list: ~[Result] = ~[];
for _ in range(0, len) {
let v = match io.read_char() {
'$' => parse_bulk(io),
':' => parse_int(io),
_ => fail!()
};
list.push(v);
}
return List(list);
}
priv fn chop(s: String) -> String {
s.slice(0, s.len() - 1).to_owned()
}
priv fn parse_bulk(io: @io::Reader) -> Result {
match from_str::<int>(chop(io.read_line())) {
None => fail!(),
Some(-1) => Nil,
Some(len) if len >= 0 => parse_data(len as uint, io),
Some(_) => fail!()
}
}
priv fn parse_multi(io: @io::Reader) -> Result {
match from_str::<int>(chop(io.read_line())) {
None => fail!(),
Some(-1) => Nil,
Some(0) => List(~[]),
Some(len) if len >= 0 => parse_list(len as uint, io),
Some(_) => fail!()
}
}
priv fn parse_int(io: @io::Reader) -> Result {
match from_str::<int>(chop(io.read_line())) {
None => fail!(),
Some(i) => Int(i)
}
}
priv fn parse_response(io: @io::Reader) -> Result {
match io.read_char() {
'$' => parse_bulk(io),
'*' => parse_multi(io),
'+' => Status(chop(io.read_line())),
'-' => Error(chop(io.read_line())),
':' => parse_int(io),
_ => fail!()
}
}
priv fn cmd_to_str(cmd: ~[String]) -> String {
let mut res = "*".to_string();
res.push_str(cmd.len().to_str());
res.push_str("\r\n");
for s in cmd.iter() {
res.push_str(["$".to_string(), s.len().to_str(), "\r\n".to_string(),
(*s).clone(), "\r\n".to_string()].concat() );
}
res
}
fn query(cmd: ~[String], sb: TcpSocketBuf) -> Result {
let cmd = cmd_to_str(cmd);
//println!("{}", cmd);
sb.write_str(cmd);
let res = parse_response(@sb as @io::Reader);
res
}
fn query2(cmd: ~[String]) -> Result {
let _cmd = cmd_to_str(cmd);
io::with_str_reader("$3\r\nXXX\r\n".to_string())(|sb| {
let res = parse_response(@sb as @io::Reader);
println!("{:?}", res);
res
});
}
pub fn main() {
}
|
