redrust 0.1.1

redrust is a port of the popular Redis database system written in Rust programming language. This port aims to provide all the features of Redis while taking advantage of the Rust language's safety, speed, and modern language features.
Documentation 
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extern crate c2rust_bitfields;
extern crate libc;
extern crate core;
extern "C" {
    fn __errno_location() -> *mut libc::c_int;
    fn read(__fd: libc::c_int, __buf: *mut libc::c_void, __nbytes: size_t) -> ssize_t;
    fn write(__fd: libc::c_int, __buf: *const libc::c_void, __n: size_t) -> ssize_t;
    fn aeWait(
        fd: libc::c_int,
        mask: libc::c_int,
        milliseconds: libc::c_longlong,
    ) -> libc::c_int;
    fn mstime() -> libc::c_longlong;
}
pub type __ssize_t = libc::c_long;
pub type size_t = libc::c_ulong;
pub type ssize_t = __ssize_t;
#[no_mangle]
pub unsafe extern "C" fn syncWrite(
    mut fd: libc::c_int,
    mut ptr: *mut libc::c_char,
    mut size: ssize_t,
    mut timeout: libc::c_longlong,
) -> ssize_t {
    let mut nwritten: ssize_t = 0;
    let mut ret: ssize_t = size;
    let mut start: libc::c_longlong = mstime();
    let mut remaining: libc::c_longlong = timeout;
    loop {
        let mut wait: libc::c_longlong = if remaining
            > 10 as libc::c_int as libc::c_longlong
        {
            remaining
        } else {
            10 as libc::c_int as libc::c_longlong
        };
        let mut elapsed: libc::c_longlong = 0;
        nwritten = write(fd, ptr as *const libc::c_void, size as size_t);
        if nwritten == -(1 as libc::c_int) as libc::c_long {
            if *__errno_location() != 11 as libc::c_int {
                return -(1 as libc::c_int) as ssize_t;
            }
        } else {
            ptr = ptr.offset(nwritten as isize);
            size -= nwritten;
        }
        if size == 0 as libc::c_int as libc::c_long {
            return ret;
        }
        aeWait(fd, 2 as libc::c_int, wait);
        elapsed = mstime() - start;
        if elapsed >= timeout {
            *__errno_location() = 110 as libc::c_int;
            return -(1 as libc::c_int) as ssize_t;
        }
        remaining = timeout - elapsed;
    };
}
#[no_mangle]
pub unsafe extern "C" fn syncRead(
    mut fd: libc::c_int,
    mut ptr: *mut libc::c_char,
    mut size: ssize_t,
    mut timeout: libc::c_longlong,
) -> ssize_t {
    let mut nread: ssize_t = 0;
    let mut totread: ssize_t = 0 as libc::c_int as ssize_t;
    let mut start: libc::c_longlong = mstime();
    let mut remaining: libc::c_longlong = timeout;
    if size == 0 as libc::c_int as libc::c_long {
        return 0 as libc::c_int as ssize_t;
    }
    loop {
        let mut wait: libc::c_longlong = if remaining
            > 10 as libc::c_int as libc::c_longlong
        {
            remaining
        } else {
            10 as libc::c_int as libc::c_longlong
        };
        let mut elapsed: libc::c_longlong = 0;
        nread = read(fd, ptr as *mut libc::c_void, size as size_t);
        if nread == 0 as libc::c_int as libc::c_long {
            return -(1 as libc::c_int) as ssize_t;
        }
        if nread == -(1 as libc::c_int) as libc::c_long {
            if *__errno_location() != 11 as libc::c_int {
                return -(1 as libc::c_int) as ssize_t;
            }
        } else {
            ptr = ptr.offset(nread as isize);
            size -= nread;
            totread += nread;
        }
        if size == 0 as libc::c_int as libc::c_long {
            return totread;
        }
        aeWait(fd, 1 as libc::c_int, wait);
        elapsed = mstime() - start;
        if elapsed >= timeout {
            *__errno_location() = 110 as libc::c_int;
            return -(1 as libc::c_int) as ssize_t;
        }
        remaining = timeout - elapsed;
    };
}
#[no_mangle]
pub unsafe extern "C" fn syncReadLine(
    mut fd: libc::c_int,
    mut ptr: *mut libc::c_char,
    mut size: ssize_t,
    mut timeout: libc::c_longlong,
) -> ssize_t {
    let mut nread: ssize_t = 0 as libc::c_int as ssize_t;
    size -= 1;
    while size != 0 {
        let mut c: libc::c_char = 0;
        if syncRead(fd, &mut c, 1 as libc::c_int as ssize_t, timeout)
            == -(1 as libc::c_int) as libc::c_long
        {
            return -(1 as libc::c_int) as ssize_t;
        }
        if c as libc::c_int == '\n' as i32 {
            *ptr = '\0' as i32 as libc::c_char;
            if nread != 0
                && *ptr.offset(-(1 as libc::c_int as isize)) as libc::c_int
                    == '\r' as i32
            {
                *ptr.offset(-(1 as libc::c_int as isize)) = '\0' as i32 as libc::c_char;
            }
            return nread;
        } else {
            let fresh0 = ptr;
            ptr = ptr.offset(1);
            *fresh0 = c;
            *ptr = '\0' as i32 as libc::c_char;
            nread += 1;
        }
        size -= 1;
    }
    return nread;
}