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" {
    pub type _IO_wide_data;
    pub type _IO_codecvt;
    pub type _IO_marker;
    static mut stdout: *mut FILE;
    fn printf(_: *const libc::c_char, _: ...) -> libc::c_int;
    fn fwrite(
        _: *const libc::c_void,
        _: libc::c_ulong,
        _: libc::c_ulong,
        _: *mut FILE,
    ) -> libc::c_ulong;
    fn perror(__s: *const libc::c_char);
    fn rand() -> libc::c_int;
    fn qsort(
        __base: *mut libc::c_void,
        __nmemb: size_t,
        __size: size_t,
        __compar: __compar_fn_t,
    );
    fn memcpy(
        _: *mut libc::c_void,
        _: *const libc::c_void,
        _: libc::c_ulong,
    ) -> *mut libc::c_void;
    fn memmove(
        _: *mut libc::c_void,
        _: *const libc::c_void,
        _: libc::c_ulong,
    ) -> *mut libc::c_void;
    fn memcmp(
        _: *const libc::c_void,
        _: *const libc::c_void,
        _: libc::c_ulong,
    ) -> libc::c_int;
    fn zmalloc(size: size_t) -> *mut libc::c_void;
    fn zrealloc(ptr: *mut libc::c_void, size: size_t) -> *mut libc::c_void;
    fn zfree(ptr: *mut libc::c_void);
    fn string2ll(
        s: *const libc::c_char,
        slen: size_t,
        value: *mut libc::c_longlong,
    ) -> libc::c_int;
    fn _serverAssert(
        estr: *const libc::c_char,
        file: *const libc::c_char,
        line: libc::c_int,
    );
}
pub type size_t = libc::c_ulong;
pub type __int8_t = libc::c_schar;
pub type __uint8_t = libc::c_uchar;
pub type __int16_t = libc::c_short;
pub type __uint16_t = libc::c_ushort;
pub type __int32_t = libc::c_int;
pub type __uint32_t = libc::c_uint;
pub type __int64_t = libc::c_long;
pub type __uint64_t = libc::c_ulong;
pub type __off_t = libc::c_long;
pub type __off64_t = libc::c_long;
#[derive(Copy, Clone)]
#[repr(C)]
pub struct _IO_FILE {
    pub _flags: libc::c_int,
    pub _IO_read_ptr: *mut libc::c_char,
    pub _IO_read_end: *mut libc::c_char,
    pub _IO_read_base: *mut libc::c_char,
    pub _IO_write_base: *mut libc::c_char,
    pub _IO_write_ptr: *mut libc::c_char,
    pub _IO_write_end: *mut libc::c_char,
    pub _IO_buf_base: *mut libc::c_char,
    pub _IO_buf_end: *mut libc::c_char,
    pub _IO_save_base: *mut libc::c_char,
    pub _IO_backup_base: *mut libc::c_char,
    pub _IO_save_end: *mut libc::c_char,
    pub _markers: *mut _IO_marker,
    pub _chain: *mut _IO_FILE,
    pub _fileno: libc::c_int,
    pub _flags2: libc::c_int,
    pub _old_offset: __off_t,
    pub _cur_column: libc::c_ushort,
    pub _vtable_offset: libc::c_schar,
    pub _shortbuf: [libc::c_char; 1],
    pub _lock: *mut libc::c_void,
    pub _offset: __off64_t,
    pub _codecvt: *mut _IO_codecvt,
    pub _wide_data: *mut _IO_wide_data,
    pub _freeres_list: *mut _IO_FILE,
    pub _freeres_buf: *mut libc::c_void,
    pub __pad5: size_t,
    pub _mode: libc::c_int,
    pub _unused2: [libc::c_char; 20],
}
pub type _IO_lock_t = ();
pub type FILE = _IO_FILE;
pub type __compar_fn_t = Option::<
    unsafe extern "C" fn(*const libc::c_void, *const libc::c_void) -> libc::c_int,
>;
pub type int8_t = __int8_t;
pub type int16_t = __int16_t;
pub type int32_t = __int32_t;
pub type int64_t = __int64_t;
pub type uint8_t = __uint8_t;
pub type uint16_t = __uint16_t;
pub type uint32_t = __uint32_t;
pub type uint64_t = __uint64_t;
#[derive(Copy, Clone)]
#[repr(C)]
pub struct ziplistEntry {
    pub sval: *mut libc::c_uchar,
    pub slen: libc::c_uint,
    pub lval: libc::c_longlong,
}
#[derive(Copy, Clone)]
#[repr(C)]
pub struct zlentry {
    pub prevrawlensize: libc::c_uint,
    pub prevrawlen: libc::c_uint,
    pub lensize: libc::c_uint,
    pub len: libc::c_uint,
    pub headersize: libc::c_uint,
    pub encoding: libc::c_uchar,
    pub p: *mut libc::c_uchar,
}
pub type ziplistValidateEntryCB = Option::<
    unsafe extern "C" fn(
        *mut libc::c_uchar,
        libc::c_uint,
        *mut libc::c_void,
    ) -> libc::c_int,
>;
#[derive(Copy, Clone)]
#[repr(C)]
pub struct rand_pick {
    pub index: libc::c_uint,
    pub order: libc::c_uint,
}
#[no_mangle]
pub unsafe extern "C" fn ziplistSafeToAdd(
    mut zl: *mut libc::c_uchar,
    mut add: size_t,
) -> libc::c_int {
    let mut len: size_t = if !zl.is_null() {
        ziplistBlobLen(zl)
    } else {
        0 as libc::c_int as libc::c_ulong
    };
    if len.wrapping_add(add) > ((1 as libc::c_int) << 30 as libc::c_int) as libc::c_ulong
    {
        return 0 as libc::c_int;
    }
    return 1 as libc::c_int;
}
#[inline]
unsafe extern "C" fn zipEncodingLenSize(mut encoding: libc::c_uchar) -> libc::c_uint {
    if encoding as libc::c_int
        == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
        || encoding as libc::c_int
            == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
        || encoding as libc::c_int
            == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
        || encoding as libc::c_int
            == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
        || encoding as libc::c_int == 0xfe as libc::c_int
    {
        return 1 as libc::c_int as libc::c_uint;
    }
    if encoding as libc::c_int >= 0xf1 as libc::c_int
        && encoding as libc::c_int <= 0xfd as libc::c_int
    {
        return 1 as libc::c_int as libc::c_uint;
    }
    if encoding as libc::c_int == (0 as libc::c_int) << 6 as libc::c_int {
        return 1 as libc::c_int as libc::c_uint;
    }
    if encoding as libc::c_int == (1 as libc::c_int) << 6 as libc::c_int {
        return 2 as libc::c_int as libc::c_uint;
    }
    if encoding as libc::c_int == (2 as libc::c_int) << 6 as libc::c_int {
        return 5 as libc::c_int as libc::c_uint;
    }
    return 0xff as libc::c_int as libc::c_uint;
}
#[inline]
unsafe extern "C" fn zipIntSize(mut encoding: libc::c_uchar) -> libc::c_uint {
    match encoding as libc::c_int {
        254 => return 1 as libc::c_int as libc::c_uint,
        192 => return 2 as libc::c_int as libc::c_uint,
        240 => return 3 as libc::c_int as libc::c_uint,
        208 => return 4 as libc::c_int as libc::c_uint,
        224 => return 8 as libc::c_int as libc::c_uint,
        _ => {}
    }
    if encoding as libc::c_int >= 0xf1 as libc::c_int
        && encoding as libc::c_int <= 0xfd as libc::c_int
    {
        return 0 as libc::c_int as libc::c_uint;
    }
    unreachable!();
}
#[no_mangle]
pub unsafe extern "C" fn zipStoreEntryEncoding(
    mut p: *mut libc::c_uchar,
    mut encoding: libc::c_uchar,
    mut rawlen: libc::c_uint,
) -> libc::c_uint {
    let mut len: libc::c_uchar = 1 as libc::c_int as libc::c_uchar;
    let mut buf: [libc::c_uchar; 5] = [0; 5];
    if (encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
        if rawlen <= 0x3f as libc::c_int as libc::c_uint {
            if p.is_null() {
                return len as libc::c_uint;
            }
            buf[0 as libc::c_int
                as usize] = (((0 as libc::c_int) << 6 as libc::c_int) as libc::c_uint
                | rawlen) as libc::c_uchar;
        } else if rawlen <= 0x3fff as libc::c_int as libc::c_uint {
            len = (len as libc::c_int + 1 as libc::c_int) as libc::c_uchar;
            if p.is_null() {
                return len as libc::c_uint;
            }
            buf[0 as libc::c_int
                as usize] = (((1 as libc::c_int) << 6 as libc::c_int) as libc::c_uint
                | rawlen >> 8 as libc::c_int & 0x3f as libc::c_int as libc::c_uint)
                as libc::c_uchar;
            buf[1 as libc::c_int
                as usize] = (rawlen & 0xff as libc::c_int as libc::c_uint)
                as libc::c_uchar;
        } else {
            len = (len as libc::c_int + 4 as libc::c_int) as libc::c_uchar;
            if p.is_null() {
                return len as libc::c_uint;
            }
            buf[0 as libc::c_int
                as usize] = ((2 as libc::c_int) << 6 as libc::c_int) as libc::c_uchar;
            buf[1 as libc::c_int
                as usize] = (rawlen >> 24 as libc::c_int
                & 0xff as libc::c_int as libc::c_uint) as libc::c_uchar;
            buf[2 as libc::c_int
                as usize] = (rawlen >> 16 as libc::c_int
                & 0xff as libc::c_int as libc::c_uint) as libc::c_uchar;
            buf[3 as libc::c_int
                as usize] = (rawlen >> 8 as libc::c_int
                & 0xff as libc::c_int as libc::c_uint) as libc::c_uchar;
            buf[4 as libc::c_int
                as usize] = (rawlen & 0xff as libc::c_int as libc::c_uint)
                as libc::c_uchar;
        }
    } else {
        if p.is_null() {
            return len as libc::c_uint;
        }
        buf[0 as libc::c_int as usize] = encoding;
    }
    memcpy(
        p as *mut libc::c_void,
        buf.as_mut_ptr() as *const libc::c_void,
        len as libc::c_ulong,
    );
    return len as libc::c_uint;
}
#[no_mangle]
pub unsafe extern "C" fn zipStorePrevEntryLengthLarge(
    mut p: *mut libc::c_uchar,
    mut len: libc::c_uint,
) -> libc::c_int {
    let mut u32: uint32_t = 0;
    if !p.is_null() {
        *p.offset(0 as libc::c_int as isize) = 254 as libc::c_int as libc::c_uchar;
        u32 = len;
        memcpy(
            p.offset(1 as libc::c_int as isize) as *mut libc::c_void,
            &mut u32 as *mut uint32_t as *const libc::c_void,
            core::mem::size_of::<uint32_t>() as libc::c_ulong,
        );
    }
    return (1 as libc::c_int as libc::c_ulong)
        .wrapping_add(core::mem::size_of::<uint32_t>() as libc::c_ulong)
        as libc::c_int;
}
#[no_mangle]
pub unsafe extern "C" fn zipStorePrevEntryLength(
    mut p: *mut libc::c_uchar,
    mut len: libc::c_uint,
) -> libc::c_uint {
    if p.is_null() {
        return (if len < 254 as libc::c_int as libc::c_uint {
            1 as libc::c_int as libc::c_ulong
        } else {
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_add(1 as libc::c_int as libc::c_ulong)
        }) as libc::c_uint
    } else if len < 254 as libc::c_int as libc::c_uint {
        *p.offset(0 as libc::c_int as isize) = len as libc::c_uchar;
        return 1 as libc::c_int as libc::c_uint;
    } else {
        return zipStorePrevEntryLengthLarge(p, len) as libc::c_uint
    };
}
#[no_mangle]
pub unsafe extern "C" fn zipPrevLenByteDiff(
    mut p: *mut libc::c_uchar,
    mut len: libc::c_uint,
) -> libc::c_int {
    let mut prevlensize: libc::c_uint = 0;
    if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
        prevlensize = 1 as libc::c_int as libc::c_uint;
    } else {
        prevlensize = 5 as libc::c_int as libc::c_uint;
    }
    return (zipStorePrevEntryLength(0 as *mut libc::c_uchar, len))
        .wrapping_sub(prevlensize) as libc::c_int;
}
#[no_mangle]
pub unsafe extern "C" fn zipTryEncoding(
    mut entry: *mut libc::c_uchar,
    mut entrylen: libc::c_uint,
    mut v: *mut libc::c_longlong,
    mut encoding: *mut libc::c_uchar,
) -> libc::c_int {
    let mut value: libc::c_longlong = 0;
    if entrylen >= 32 as libc::c_int as libc::c_uint
        || entrylen == 0 as libc::c_int as libc::c_uint
    {
        return 0 as libc::c_int;
    }
    if string2ll(entry as *mut libc::c_char, entrylen as size_t, &mut value) != 0 {
        if value >= 0 as libc::c_int as libc::c_longlong
            && value <= 12 as libc::c_int as libc::c_longlong
        {
            *encoding = (0xf1 as libc::c_int as libc::c_longlong + value)
                as libc::c_uchar;
        } else if value >= -(128 as libc::c_int) as libc::c_longlong
            && value <= 127 as libc::c_int as libc::c_longlong
        {
            *encoding = 0xfe as libc::c_int as libc::c_uchar;
        } else if value
            >= (-(32767 as libc::c_int) - 1 as libc::c_int) as libc::c_longlong
            && value <= 32767 as libc::c_int as libc::c_longlong
        {
            *encoding = (0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int)
                as libc::c_uchar;
        } else if value
            >= (-(0x7fffff as libc::c_int) - 1 as libc::c_int) as libc::c_longlong
            && value <= 0x7fffff as libc::c_int as libc::c_longlong
        {
            *encoding = (0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int)
                as libc::c_uchar;
        } else if value
            >= (-(2147483647 as libc::c_int) - 1 as libc::c_int) as libc::c_longlong
            && value <= 2147483647 as libc::c_int as libc::c_longlong
        {
            *encoding = (0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int)
                as libc::c_uchar;
        } else {
            *encoding = (0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int)
                as libc::c_uchar;
        }
        *v = value;
        return 1 as libc::c_int;
    }
    return 0 as libc::c_int;
}
#[no_mangle]
pub unsafe extern "C" fn zipSaveInteger(
    mut p: *mut libc::c_uchar,
    mut value: int64_t,
    mut encoding: libc::c_uchar,
) {
    let mut i16: int16_t = 0;
    let mut i32: int32_t = 0;
    let mut i64: int64_t = 0;
    if encoding as libc::c_int == 0xfe as libc::c_int {
        *(p as *mut int8_t).offset(0 as libc::c_int as isize) = value as int8_t;
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
    {
        i16 = value as int16_t;
        memcpy(
            p as *mut libc::c_void,
            &mut i16 as *mut int16_t as *const libc::c_void,
            core::mem::size_of::<int16_t>() as libc::c_ulong,
        );
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
    {
        i32 = ((value as uint64_t) << 8 as libc::c_int) as int32_t;
        memcpy(
            p as *mut libc::c_void,
            (&mut i32 as *mut int32_t as *mut uint8_t).offset(1 as libc::c_int as isize)
                as *const libc::c_void,
            (core::mem::size_of::<int32_t>() as libc::c_ulong)
                .wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong),
        );
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
    {
        i32 = value as int32_t;
        memcpy(
            p as *mut libc::c_void,
            &mut i32 as *mut int32_t as *const libc::c_void,
            core::mem::size_of::<int32_t>() as libc::c_ulong,
        );
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
    {
        i64 = value;
        memcpy(
            p as *mut libc::c_void,
            &mut i64 as *mut int64_t as *const libc::c_void,
            core::mem::size_of::<int64_t>() as libc::c_ulong,
        );
    } else if !(encoding as libc::c_int >= 0xf1 as libc::c_int
        && encoding as libc::c_int <= 0xfd as libc::c_int)
    {
        if !(0 as *mut libc::c_void).is_null() as libc::c_int as libc::c_long != 0
        {} else {
            _serverAssert(
                b"NULL\0" as *const u8 as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                574 as libc::c_int,
            );
            unreachable!();
        };
    }
}
#[no_mangle]
pub unsafe extern "C" fn zipLoadInteger(
    mut p: *mut libc::c_uchar,
    mut encoding: libc::c_uchar,
) -> int64_t {
    let mut i16: int16_t = 0;
    let mut i32: int32_t = 0;
    let mut i64: int64_t = 0;
    let mut ret: int64_t = 0 as libc::c_int as int64_t;
    if encoding as libc::c_int == 0xfe as libc::c_int {
        ret = *(p as *mut int8_t).offset(0 as libc::c_int as isize) as int64_t;
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
    {
        memcpy(
            &mut i16 as *mut int16_t as *mut libc::c_void,
            p as *const libc::c_void,
            core::mem::size_of::<int16_t>() as libc::c_ulong,
        );
        ret = i16 as int64_t;
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
    {
        memcpy(
            &mut i32 as *mut int32_t as *mut libc::c_void,
            p as *const libc::c_void,
            core::mem::size_of::<int32_t>() as libc::c_ulong,
        );
        ret = i32 as int64_t;
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
    {
        i32 = 0 as libc::c_int;
        memcpy(
            (&mut i32 as *mut int32_t as *mut uint8_t).offset(1 as libc::c_int as isize)
                as *mut libc::c_void,
            p as *const libc::c_void,
            (core::mem::size_of::<int32_t>() as libc::c_ulong)
                .wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong),
        );
        ret = (i32 >> 8 as libc::c_int) as int64_t;
    } else if encoding as libc::c_int
        == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
    {
        memcpy(
            &mut i64 as *mut int64_t as *mut libc::c_void,
            p as *const libc::c_void,
            core::mem::size_of::<int64_t>() as libc::c_ulong,
        );
        ret = i64;
    } else if encoding as libc::c_int >= 0xf1 as libc::c_int
        && encoding as libc::c_int <= 0xfd as libc::c_int
    {
        ret = ((encoding as libc::c_int & 0xf as libc::c_int) - 1 as libc::c_int)
            as int64_t;
    } else {
        if !(0 as *mut libc::c_void).is_null() as libc::c_int as libc::c_long != 0
        {} else {
            _serverAssert(
                b"NULL\0" as *const u8 as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                605 as libc::c_int,
            );
            unreachable!();
        };
    }
    return ret;
}
#[inline]
unsafe extern "C" fn zipEntry(mut p: *mut libc::c_uchar, mut e: *mut zlentry) {
    if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
        (*e).prevrawlensize = 1 as libc::c_int as libc::c_uint;
    } else {
        (*e).prevrawlensize = 5 as libc::c_int as libc::c_uint;
    }
    if (*e).prevrawlensize == 1 as libc::c_int as libc::c_uint {
        (*e).prevrawlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
    } else {
        (*e)
            .prevrawlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
            << 24 as libc::c_int
            | (*p.offset(3 as libc::c_int as isize) as libc::c_int) << 16 as libc::c_int
            | (*p.offset(2 as libc::c_int as isize) as libc::c_int) << 8 as libc::c_int
            | *p.offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
    }
    (*e)
        .encoding = *p
        .offset((*e).prevrawlensize as isize)
        .offset(0 as libc::c_int as isize);
    if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
        (*e)
            .encoding = ((*e).encoding as libc::c_int & 0xc0 as libc::c_int)
            as libc::c_uchar;
    }
    if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
        if (*e).encoding as libc::c_int == (0 as libc::c_int) << 6 as libc::c_int {
            (*e).lensize = 1 as libc::c_int as libc::c_uint;
            (*e)
                .len = (*p
                .offset((*e).prevrawlensize as isize)
                .offset(0 as libc::c_int as isize) as libc::c_int & 0x3f as libc::c_int)
                as libc::c_uint;
        } else if (*e).encoding as libc::c_int == (1 as libc::c_int) << 6 as libc::c_int
        {
            (*e).lensize = 2 as libc::c_int as libc::c_uint;
            (*e)
                .len = ((*p
                .offset((*e).prevrawlensize as isize)
                .offset(0 as libc::c_int as isize) as libc::c_int & 0x3f as libc::c_int)
                << 8 as libc::c_int
                | *p
                    .offset((*e).prevrawlensize as isize)
                    .offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
        } else if (*e).encoding as libc::c_int == (2 as libc::c_int) << 6 as libc::c_int
        {
            (*e).lensize = 5 as libc::c_int as libc::c_uint;
            (*e)
                .len = (*p
                .offset((*e).prevrawlensize as isize)
                .offset(1 as libc::c_int as isize) as uint32_t) << 24 as libc::c_int
                | (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(2 as libc::c_int as isize) as uint32_t) << 16 as libc::c_int
                | (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(3 as libc::c_int as isize) as uint32_t) << 8 as libc::c_int
                | *p
                    .offset((*e).prevrawlensize as isize)
                    .offset(4 as libc::c_int as isize) as uint32_t;
        } else {
            (*e).lensize = 0 as libc::c_int as libc::c_uint;
            (*e).len = 0 as libc::c_int as libc::c_uint;
        }
    } else {
        (*e).lensize = 1 as libc::c_int as libc::c_uint;
        if (*e).encoding as libc::c_int == 0xfe as libc::c_int {
            (*e).len = 1 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 2 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 3 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 4 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 8 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int >= 0xf1 as libc::c_int
            && (*e).encoding as libc::c_int <= 0xfd as libc::c_int
        {
            (*e).len = 0 as libc::c_int as libc::c_uint;
        } else {
            (*e).len = 0 as libc::c_int as libc::c_uint;
            (*e).lensize = (*e).len;
        }
    }
    if ((*e).lensize != 0 as libc::c_int as libc::c_uint) as libc::c_int as libc::c_long
        != 0
    {} else {
        _serverAssert(
            b"e->lensize != 0\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            620 as libc::c_int,
        );
        unreachable!();
    };
    (*e).headersize = ((*e).prevrawlensize).wrapping_add((*e).lensize);
    (*e).p = p;
}
#[inline]
unsafe extern "C" fn zipEntrySafe(
    mut zl: *mut libc::c_uchar,
    mut zlbytes: size_t,
    mut p: *mut libc::c_uchar,
    mut e: *mut zlentry,
    mut validate_prevlen: libc::c_int,
) -> libc::c_int {
    let mut zlfirst: *mut libc::c_uchar = zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                as isize,
        );
    let mut zllast: *mut libc::c_uchar = zl
        .offset(zlbytes as isize)
        .offset(-(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize));
    if p >= zlfirst && p.offset(10 as libc::c_int as isize) < zllast {
        if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
            (*e).prevrawlensize = 1 as libc::c_int as libc::c_uint;
        } else {
            (*e).prevrawlensize = 5 as libc::c_int as libc::c_uint;
        }
        if (*e).prevrawlensize == 1 as libc::c_int as libc::c_uint {
            (*e).prevrawlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
        } else {
            (*e)
                .prevrawlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
                << 24 as libc::c_int
                | (*p.offset(3 as libc::c_int as isize) as libc::c_int)
                    << 16 as libc::c_int
                | (*p.offset(2 as libc::c_int as isize) as libc::c_int)
                    << 8 as libc::c_int
                | *p.offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
        }
        (*e)
            .encoding = *p
            .offset((*e).prevrawlensize as isize)
            .offset(0 as libc::c_int as isize);
        if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
            (*e)
                .encoding = ((*e).encoding as libc::c_int & 0xc0 as libc::c_int)
                as libc::c_uchar;
        }
        if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
            if (*e).encoding as libc::c_int == (0 as libc::c_int) << 6 as libc::c_int {
                (*e).lensize = 1 as libc::c_int as libc::c_uint;
                (*e)
                    .len = (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(0 as libc::c_int as isize) as libc::c_int
                    & 0x3f as libc::c_int) as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == (1 as libc::c_int) << 6 as libc::c_int
            {
                (*e).lensize = 2 as libc::c_int as libc::c_uint;
                (*e)
                    .len = ((*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(0 as libc::c_int as isize) as libc::c_int
                    & 0x3f as libc::c_int) << 8 as libc::c_int
                    | *p
                        .offset((*e).prevrawlensize as isize)
                        .offset(1 as libc::c_int as isize) as libc::c_int)
                    as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == (2 as libc::c_int) << 6 as libc::c_int
            {
                (*e).lensize = 5 as libc::c_int as libc::c_uint;
                (*e)
                    .len = (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(1 as libc::c_int as isize) as uint32_t) << 24 as libc::c_int
                    | (*p
                        .offset((*e).prevrawlensize as isize)
                        .offset(2 as libc::c_int as isize) as uint32_t)
                        << 16 as libc::c_int
                    | (*p
                        .offset((*e).prevrawlensize as isize)
                        .offset(3 as libc::c_int as isize) as uint32_t)
                        << 8 as libc::c_int
                    | *p
                        .offset((*e).prevrawlensize as isize)
                        .offset(4 as libc::c_int as isize) as uint32_t;
            } else {
                (*e).lensize = 0 as libc::c_int as libc::c_uint;
                (*e).len = 0 as libc::c_int as libc::c_uint;
            }
        } else {
            (*e).lensize = 1 as libc::c_int as libc::c_uint;
            if (*e).encoding as libc::c_int == 0xfe as libc::c_int {
                (*e).len = 1 as libc::c_int as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
            {
                (*e).len = 2 as libc::c_int as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
            {
                (*e).len = 3 as libc::c_int as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
            {
                (*e).len = 4 as libc::c_int as libc::c_uint;
            } else if (*e).encoding as libc::c_int
                == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
            {
                (*e).len = 8 as libc::c_int as libc::c_uint;
            } else if (*e).encoding as libc::c_int >= 0xf1 as libc::c_int
                && (*e).encoding as libc::c_int <= 0xfd as libc::c_int
            {
                (*e).len = 0 as libc::c_int as libc::c_uint;
            } else {
                (*e).len = 0 as libc::c_int as libc::c_uint;
                (*e).lensize = (*e).len;
            }
        }
        (*e).headersize = ((*e).prevrawlensize).wrapping_add((*e).lensize);
        (*e).p = p;
        if ((*e).lensize == 0 as libc::c_int as libc::c_uint) as libc::c_int
            as libc::c_long != 0
        {
            return 0 as libc::c_int;
        }
        if (p.offset((*e).headersize as isize).offset((*e).len as isize) < zlfirst
            || p.offset((*e).headersize as isize).offset((*e).len as isize) > zllast)
            as libc::c_int as libc::c_long != 0
        {
            return 0 as libc::c_int;
        }
        if validate_prevlen != 0
            && (p.offset(-((*e).prevrawlen as isize)) < zlfirst
                || p.offset(-((*e).prevrawlen as isize)) > zllast) as libc::c_int
                as libc::c_long != 0
        {
            return 0 as libc::c_int;
        }
        return 1 as libc::c_int;
    }
    if (p < zlfirst || p > zllast) as libc::c_int as libc::c_long != 0 {
        return 0 as libc::c_int;
    }
    if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
        (*e).prevrawlensize = 1 as libc::c_int as libc::c_uint;
    } else {
        (*e).prevrawlensize = 5 as libc::c_int as libc::c_uint;
    }
    if (p.offset((*e).prevrawlensize as isize) < zlfirst
        || p.offset((*e).prevrawlensize as isize) > zllast) as libc::c_int
        as libc::c_long != 0
    {
        return 0 as libc::c_int;
    }
    (*e)
        .encoding = *p
        .offset((*e).prevrawlensize as isize)
        .offset(0 as libc::c_int as isize);
    if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
        (*e)
            .encoding = ((*e).encoding as libc::c_int & 0xc0 as libc::c_int)
            as libc::c_uchar;
    }
    (*e).lensize = zipEncodingLenSize((*e).encoding);
    if ((*e).lensize == 0xff as libc::c_int as libc::c_uint) as libc::c_int
        as libc::c_long != 0
    {
        return 0 as libc::c_int;
    }
    if (p.offset((*e).prevrawlensize as isize).offset((*e).lensize as isize) < zlfirst
        || p.offset((*e).prevrawlensize as isize).offset((*e).lensize as isize) > zllast)
        as libc::c_int as libc::c_long != 0
    {
        return 0 as libc::c_int;
    }
    if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
        (*e).prevrawlensize = 1 as libc::c_int as libc::c_uint;
    } else {
        (*e).prevrawlensize = 5 as libc::c_int as libc::c_uint;
    }
    if (*e).prevrawlensize == 1 as libc::c_int as libc::c_uint {
        (*e).prevrawlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
    } else {
        (*e)
            .prevrawlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
            << 24 as libc::c_int
            | (*p.offset(3 as libc::c_int as isize) as libc::c_int) << 16 as libc::c_int
            | (*p.offset(2 as libc::c_int as isize) as libc::c_int) << 8 as libc::c_int
            | *p.offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
    }
    if ((*e).encoding as libc::c_int) < 0xc0 as libc::c_int {
        if (*e).encoding as libc::c_int == (0 as libc::c_int) << 6 as libc::c_int {
            (*e).lensize = 1 as libc::c_int as libc::c_uint;
            (*e)
                .len = (*p
                .offset((*e).prevrawlensize as isize)
                .offset(0 as libc::c_int as isize) as libc::c_int & 0x3f as libc::c_int)
                as libc::c_uint;
        } else if (*e).encoding as libc::c_int == (1 as libc::c_int) << 6 as libc::c_int
        {
            (*e).lensize = 2 as libc::c_int as libc::c_uint;
            (*e)
                .len = ((*p
                .offset((*e).prevrawlensize as isize)
                .offset(0 as libc::c_int as isize) as libc::c_int & 0x3f as libc::c_int)
                << 8 as libc::c_int
                | *p
                    .offset((*e).prevrawlensize as isize)
                    .offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
        } else if (*e).encoding as libc::c_int == (2 as libc::c_int) << 6 as libc::c_int
        {
            (*e).lensize = 5 as libc::c_int as libc::c_uint;
            (*e)
                .len = (*p
                .offset((*e).prevrawlensize as isize)
                .offset(1 as libc::c_int as isize) as uint32_t) << 24 as libc::c_int
                | (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(2 as libc::c_int as isize) as uint32_t) << 16 as libc::c_int
                | (*p
                    .offset((*e).prevrawlensize as isize)
                    .offset(3 as libc::c_int as isize) as uint32_t) << 8 as libc::c_int
                | *p
                    .offset((*e).prevrawlensize as isize)
                    .offset(4 as libc::c_int as isize) as uint32_t;
        } else {
            (*e).lensize = 0 as libc::c_int as libc::c_uint;
            (*e).len = 0 as libc::c_int as libc::c_uint;
        }
    } else {
        (*e).lensize = 1 as libc::c_int as libc::c_uint;
        if (*e).encoding as libc::c_int == 0xfe as libc::c_int {
            (*e).len = 1 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (0 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 2 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (3 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 3 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (1 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 4 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int
            == 0xc0 as libc::c_int | (2 as libc::c_int) << 4 as libc::c_int
        {
            (*e).len = 8 as libc::c_int as libc::c_uint;
        } else if (*e).encoding as libc::c_int >= 0xf1 as libc::c_int
            && (*e).encoding as libc::c_int <= 0xfd as libc::c_int
        {
            (*e).len = 0 as libc::c_int as libc::c_uint;
        } else {
            (*e).len = 0 as libc::c_int as libc::c_uint;
            (*e).lensize = (*e).len;
        }
    }
    (*e).headersize = ((*e).prevrawlensize).wrapping_add((*e).lensize);
    if (p.offset((*e).headersize as isize).offset((*e).len as isize) < zlfirst
        || p.offset((*e).headersize as isize).offset((*e).len as isize) > zllast)
        as libc::c_int as libc::c_long != 0
    {
        return 0 as libc::c_int;
    }
    if validate_prevlen != 0
        && (p.offset(-((*e).prevrawlen as isize)) < zlfirst
            || p.offset(-((*e).prevrawlen as isize)) > zllast) as libc::c_int
            as libc::c_long != 0
    {
        return 0 as libc::c_int;
    }
    (*e).p = p;
    return 1 as libc::c_int;
}
#[inline]
unsafe extern "C" fn zipRawEntryLengthSafe(
    mut zl: *mut libc::c_uchar,
    mut zlbytes: size_t,
    mut p: *mut libc::c_uchar,
) -> libc::c_uint {
    let mut e: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    if (zipEntrySafe(zl, zlbytes, p, &mut e, 0 as libc::c_int) != 0) as libc::c_int
        as libc::c_long != 0
    {} else {
        _serverAssert(
            b"zipEntrySafe(zl, zlbytes, p, &e, 0)\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            694 as libc::c_int,
        );
        unreachable!();
    };
    return (e.headersize).wrapping_add(e.len);
}
#[inline]
unsafe extern "C" fn zipRawEntryLength(mut p: *mut libc::c_uchar) -> libc::c_uint {
    let mut e: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    zipEntry(p, &mut e);
    return (e.headersize).wrapping_add(e.len);
}
#[inline]
unsafe extern "C" fn zipAssertValidEntry(
    mut zl: *mut libc::c_uchar,
    mut zlbytes: size_t,
    mut p: *mut libc::c_uchar,
) {
    let mut e: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    if (zipEntrySafe(zl, zlbytes, p, &mut e, 1 as libc::c_int) != 0) as libc::c_int
        as libc::c_long != 0
    {} else {
        _serverAssert(
            b"zipEntrySafe(zl, zlbytes, p, &e, 1)\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            708 as libc::c_int,
        );
        unreachable!();
    };
}
#[no_mangle]
pub unsafe extern "C" fn ziplistNew() -> *mut libc::c_uchar {
    let mut bytes: libc::c_uint = (core::mem::size_of::<uint32_t>() as libc::c_ulong)
        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
        .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
        .wrapping_add(core::mem::size_of::<uint8_t>() as libc::c_ulong)
        as libc::c_uint;
    let mut zl: *mut libc::c_uchar = zmalloc(bytes as size_t) as *mut libc::c_uchar;
    *(zl as *mut uint32_t) = bytes;
    *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
        as *mut uint32_t) = (core::mem::size_of::<uint32_t>() as libc::c_ulong)
        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
        .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong) as uint32_t;
    *(zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) = 0 as libc::c_int as uint16_t;
    *zl
        .offset(
            bytes.wrapping_sub(1 as libc::c_int as libc::c_uint) as isize,
        ) = 255 as libc::c_int as libc::c_uchar;
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistResize(
    mut zl: *mut libc::c_uchar,
    mut len: size_t,
) -> *mut libc::c_uchar {
    if (len < 4294967295 as libc::c_uint as libc::c_ulong) as libc::c_int as libc::c_long
        != 0
    {} else {
        _serverAssert(
            b"len < UINT32_MAX\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            724 as libc::c_int,
        );
        unreachable!();
    };
    zl = zrealloc(zl as *mut libc::c_void, len) as *mut libc::c_uchar;
    *(zl as *mut uint32_t) = len as uint32_t;
    *zl
        .offset(
            len.wrapping_sub(1 as libc::c_int as libc::c_ulong) as isize,
        ) = 255 as libc::c_int as libc::c_uchar;
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn __ziplistCascadeUpdate(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
) -> *mut libc::c_uchar {
    let mut cur: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    let mut prevlen: size_t = 0;
    let mut prevlensize: size_t = 0;
    let mut prevoffset: size_t = 0;
    let mut firstentrylen: size_t = 0;
    let mut rawlen: size_t = 0;
    let mut curlen: size_t = *(zl as *mut uint32_t) as size_t;
    let mut extra: size_t = 0 as libc::c_int as size_t;
    let mut cnt: size_t = 0 as libc::c_int as size_t;
    let mut offset: size_t = 0;
    let mut delta: size_t = 4 as libc::c_int as size_t;
    let mut tail: *mut libc::c_uchar = zl
        .offset(
            *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t) as isize,
        );
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int {
        return zl;
    }
    zipEntry(p, &mut cur);
    prevlen = (cur.headersize).wrapping_add(cur.len) as size_t;
    firstentrylen = prevlen;
    prevlensize = zipStorePrevEntryLength(
        0 as *mut libc::c_uchar,
        prevlen as libc::c_uint,
    ) as size_t;
    prevoffset = p.offset_from(zl) as libc::c_long as size_t;
    p = p.offset(prevlen as isize);
    while *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
        if (zipEntrySafe(zl, curlen, p, &mut cur, 0 as libc::c_int) != 0) as libc::c_int
            as libc::c_long != 0
        {} else {
            _serverAssert(
                b"zipEntrySafe(zl, curlen, p, &cur, 0)\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                771 as libc::c_int,
            );
            unreachable!();
        };
        if cur.prevrawlen as libc::c_ulong == prevlen {
            break;
        }
        if cur.prevrawlensize as libc::c_ulong >= prevlensize {
            if cur.prevrawlensize as libc::c_ulong == prevlensize {
                zipStorePrevEntryLength(p, prevlen as libc::c_uint);
            } else {
                zipStorePrevEntryLengthLarge(p, prevlen as libc::c_uint);
            }
            break;
        } else {
            if (cur.prevrawlen == 0 as libc::c_int as libc::c_uint
                || (cur.prevrawlen as libc::c_ulong).wrapping_add(delta) == prevlen)
                as libc::c_int as libc::c_long != 0
            {} else {
                _serverAssert(
                    b"cur.prevrawlen == 0 || cur.prevrawlen + delta == prevlen\0"
                        as *const u8 as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    789 as libc::c_int,
                );
                unreachable!();
            };
            rawlen = (cur.headersize).wrapping_add(cur.len) as size_t;
            prevlen = rawlen.wrapping_add(delta);
            prevlensize = zipStorePrevEntryLength(
                0 as *mut libc::c_uchar,
                prevlen as libc::c_uint,
            ) as size_t;
            prevoffset = p.offset_from(zl) as libc::c_long as size_t;
            p = p.offset(rawlen as isize);
            extra = (extra as libc::c_ulong).wrapping_add(delta) as size_t as size_t;
            cnt = cnt.wrapping_add(1);
        }
    }
    if extra == 0 as libc::c_int as libc::c_ulong {
        return zl;
    }
    if tail == zl.offset(prevoffset as isize) {
        if extra.wrapping_sub(delta) != 0 as libc::c_int as libc::c_ulong {
            *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t) = (*(zl
                .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t) as libc::c_ulong)
                .wrapping_add(extra)
                .wrapping_sub(delta) as uint32_t;
        }
    } else {
        *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) = (*(zl
            .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) as libc::c_ulong)
            .wrapping_add(extra) as uint32_t;
    }
    offset = p.offset_from(zl) as libc::c_long as size_t;
    zl = ziplistResize(zl, curlen.wrapping_add(extra));
    p = zl.offset(offset as isize);
    memmove(
        p.offset(extra as isize) as *mut libc::c_void,
        p as *const libc::c_void,
        curlen.wrapping_sub(offset).wrapping_sub(1 as libc::c_int as libc::c_ulong),
    );
    p = p.offset(extra as isize);
    while cnt != 0 {
        zipEntry(zl.offset(prevoffset as isize), &mut cur);
        rawlen = (cur.headersize).wrapping_add(cur.len) as size_t;
        memmove(
            p
                .offset(
                    -(rawlen.wrapping_sub(cur.prevrawlensize as libc::c_ulong) as isize),
                ) as *mut libc::c_void,
            zl.offset(prevoffset as isize).offset(cur.prevrawlensize as isize)
                as *const libc::c_void,
            rawlen.wrapping_sub(cur.prevrawlensize as libc::c_ulong),
        );
        p = p.offset(-(rawlen.wrapping_add(delta) as isize));
        if cur.prevrawlen == 0 as libc::c_int as libc::c_uint {
            zipStorePrevEntryLength(p, firstentrylen as libc::c_uint);
        } else {
            zipStorePrevEntryLength(
                p,
                (cur.prevrawlen as libc::c_ulong).wrapping_add(delta) as libc::c_uint,
            );
        }
        prevoffset = (prevoffset as libc::c_ulong)
            .wrapping_sub(cur.prevrawlen as libc::c_ulong) as size_t as size_t;
        cnt = cnt.wrapping_sub(1);
    }
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn __ziplistDelete(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
    mut num: libc::c_uint,
) -> *mut libc::c_uchar {
    let mut i: libc::c_uint = 0;
    let mut totlen: libc::c_uint = 0;
    let mut deleted: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut offset: size_t = 0;
    let mut nextdiff: libc::c_int = 0 as libc::c_int;
    let mut first: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    let mut tail: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    let mut zlbytes: size_t = *(zl as *mut uint32_t) as size_t;
    zipEntry(p, &mut first);
    i = 0 as libc::c_int as libc::c_uint;
    while *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int
        && i < num
    {
        p = p.offset(zipRawEntryLengthSafe(zl, zlbytes, p) as isize);
        deleted = deleted.wrapping_add(1);
        i = i.wrapping_add(1);
    }
    if (p >= first.p) as libc::c_int as libc::c_long != 0 {} else {
        _serverAssert(
            b"p >= first.p\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            863 as libc::c_int,
        );
        unreachable!();
    };
    totlen = p.offset_from(first.p) as libc::c_long as libc::c_uint;
    if totlen > 0 as libc::c_int as libc::c_uint {
        let mut set_tail: uint32_t = 0;
        if *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
            nextdiff = zipPrevLenByteDiff(p, first.prevrawlen);
            p = p.offset(-(nextdiff as isize));
            if (p >= first.p
                && p < zl.offset(zlbytes as isize).offset(-(1 as libc::c_int as isize)))
                as libc::c_int as libc::c_long != 0
            {} else {
                _serverAssert(
                    b"p >= first.p && p<zl+zlbytes-1\0" as *const u8
                        as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    879 as libc::c_int,
                );
                unreachable!();
            };
            zipStorePrevEntryLength(p, first.prevrawlen);
            set_tail = (*(zl
                .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t))
                .wrapping_sub(totlen);
            if (zipEntrySafe(zl, zlbytes, p, &mut tail, 1 as libc::c_int) != 0)
                as libc::c_int as libc::c_long != 0
            {} else {
                _serverAssert(
                    b"zipEntrySafe(zl, zlbytes, p, &tail, 1)\0" as *const u8
                        as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    888 as libc::c_int,
                );
                unreachable!();
            };
            if *p.offset((tail.headersize).wrapping_add(tail.len) as isize)
                as libc::c_int != 255 as libc::c_int
            {
                set_tail = set_tail.wrapping_add(nextdiff as libc::c_uint);
            }
            let mut bytes_to_move: size_t = zlbytes
                .wrapping_sub(p.offset_from(zl) as libc::c_long as libc::c_ulong)
                .wrapping_sub(1 as libc::c_int as libc::c_ulong);
            memmove(
                first.p as *mut libc::c_void,
                p as *const libc::c_void,
                bytes_to_move,
            );
        } else {
            set_tail = ((first.p).offset_from(zl) as libc::c_long
                - first.prevrawlen as libc::c_long) as uint32_t;
        }
        offset = (first.p).offset_from(zl) as libc::c_long as size_t;
        zlbytes = (zlbytes as libc::c_ulong)
            .wrapping_sub(totlen.wrapping_sub(nextdiff as libc::c_uint) as libc::c_ulong)
            as size_t as size_t;
        zl = ziplistResize(zl, zlbytes);
        p = zl.offset(offset as isize);
        if (*(zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
            ) as *mut uint16_t) as libc::c_int) < 65535 as libc::c_int
        {
            *(zl
                .offset(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
                )
                as *mut uint16_t) = (*(zl
                .offset(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
                ) as *mut uint16_t) as libc::c_uint)
                .wrapping_add(deleted.wrapping_neg()) as uint16_t;
        }
        if (set_tail as libc::c_ulong
            <= zlbytes.wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong))
            as libc::c_int as libc::c_long != 0
        {} else {
            _serverAssert(
                b"set_tail <= zlbytes - ZIPLIST_END_SIZE\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                914 as libc::c_int,
            );
            unreachable!();
        };
        *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) = set_tail;
        if nextdiff != 0 as libc::c_int {
            zl = __ziplistCascadeUpdate(zl, p);
        }
    }
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn __ziplistInsert(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
    mut s: *mut libc::c_uchar,
    mut slen: libc::c_uint,
) -> *mut libc::c_uchar {
    let mut curlen: size_t = *(zl as *mut uint32_t) as size_t;
    let mut reqlen: size_t = 0;
    let mut newlen: size_t = 0;
    let mut prevlensize: libc::c_uint = 0;
    let mut prevlen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut offset: size_t = 0;
    let mut nextdiff: libc::c_int = 0 as libc::c_int;
    let mut encoding: libc::c_uchar = 0 as libc::c_int as libc::c_uchar;
    let mut value: libc::c_longlong = 123456789 as libc::c_int as libc::c_longlong;
    let mut tail: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    if *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
        if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
            prevlensize = 1 as libc::c_int as libc::c_uint;
        } else {
            prevlensize = 5 as libc::c_int as libc::c_uint;
        }
        if prevlensize == 1 as libc::c_int as libc::c_uint {
            prevlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
        } else {
            prevlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
                << 24 as libc::c_int
                | (*p.offset(3 as libc::c_int as isize) as libc::c_int)
                    << 16 as libc::c_int
                | (*p.offset(2 as libc::c_int as isize) as libc::c_int)
                    << 8 as libc::c_int
                | *p.offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
        }
    } else {
        let mut ptail: *mut libc::c_uchar = zl
            .offset(
                *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                    as *mut uint32_t) as isize,
            );
        if *ptail.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int
        {
            prevlen = zipRawEntryLengthSafe(zl, curlen, ptail);
        }
    }
    if zipTryEncoding(s, slen, &mut value, &mut encoding) != 0 {
        reqlen = zipIntSize(encoding) as size_t;
    } else {
        reqlen = slen as size_t;
    }
    reqlen = (reqlen as libc::c_ulong)
        .wrapping_add(
            zipStorePrevEntryLength(0 as *mut libc::c_uchar, prevlen) as libc::c_ulong,
        ) as size_t as size_t;
    reqlen = (reqlen as libc::c_ulong)
        .wrapping_add(
            zipStoreEntryEncoding(0 as *mut libc::c_uchar, encoding, slen)
                as libc::c_ulong,
        ) as size_t as size_t;
    let mut forcelarge: libc::c_int = 0 as libc::c_int;
    nextdiff = if *p.offset(0 as libc::c_int as isize) as libc::c_int
        != 255 as libc::c_int
    {
        zipPrevLenByteDiff(p, reqlen as libc::c_uint)
    } else {
        0 as libc::c_int
    };
    if nextdiff == -(4 as libc::c_int) && reqlen < 4 as libc::c_int as libc::c_ulong {
        nextdiff = 0 as libc::c_int;
        forcelarge = 1 as libc::c_int;
    }
    offset = p.offset_from(zl) as libc::c_long as size_t;
    newlen = curlen.wrapping_add(reqlen).wrapping_add(nextdiff as libc::c_ulong);
    zl = ziplistResize(zl, newlen);
    p = zl.offset(offset as isize);
    if *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
        memmove(
            p.offset(reqlen as isize) as *mut libc::c_void,
            p.offset(-(nextdiff as isize)) as *const libc::c_void,
            curlen
                .wrapping_sub(offset)
                .wrapping_sub(1 as libc::c_int as libc::c_ulong)
                .wrapping_add(nextdiff as libc::c_ulong),
        );
        if forcelarge != 0 {
            zipStorePrevEntryLengthLarge(
                p.offset(reqlen as isize),
                reqlen as libc::c_uint,
            );
        } else {
            zipStorePrevEntryLength(p.offset(reqlen as isize), reqlen as libc::c_uint);
        }
        *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) = (*(zl
            .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) as libc::c_ulong)
            .wrapping_add(reqlen) as uint32_t;
        if (zipEntrySafe(
            zl,
            newlen,
            p.offset(reqlen as isize),
            &mut tail,
            1 as libc::c_int,
        ) != 0) as libc::c_int as libc::c_long != 0
        {} else {
            _serverAssert(
                b"zipEntrySafe(zl, newlen, p+reqlen, &tail, 1)\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                995 as libc::c_int,
            );
            unreachable!();
        };
        if *p
            .offset(
                reqlen
                    .wrapping_add(tail.headersize as libc::c_ulong)
                    .wrapping_add(tail.len as libc::c_ulong) as isize,
            ) as libc::c_int != 255 as libc::c_int
        {
            *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t) = (*(zl
                .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                as *mut uint32_t))
                .wrapping_add(nextdiff as libc::c_uint);
        }
    } else {
        *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t) = p.offset_from(zl) as libc::c_long as uint32_t;
    }
    if nextdiff != 0 as libc::c_int {
        offset = p.offset_from(zl) as libc::c_long as size_t;
        zl = __ziplistCascadeUpdate(zl, p.offset(reqlen as isize));
        p = zl.offset(offset as isize);
    }
    p = p.offset(zipStorePrevEntryLength(p, prevlen) as isize);
    p = p.offset(zipStoreEntryEncoding(p, encoding, slen) as isize);
    if (encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
        memcpy(p as *mut libc::c_void, s as *const libc::c_void, slen as libc::c_ulong);
    } else {
        zipSaveInteger(p, value as int64_t, encoding);
    }
    if (*(zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) as libc::c_int) < 65535 as libc::c_int
    {
        *(zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
            )
            as *mut uint16_t) = (*(zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
            ) as *mut uint16_t) as libc::c_int + 1 as libc::c_int) as uint16_t;
    }
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistMerge(
    mut first: *mut *mut libc::c_uchar,
    mut second: *mut *mut libc::c_uchar,
) -> *mut libc::c_uchar {
    if first.is_null() || (*first).is_null() || second.is_null() || (*second).is_null() {
        return 0 as *mut libc::c_uchar;
    }
    if *first == *second {
        return 0 as *mut libc::c_uchar;
    }
    let mut first_bytes: size_t = *(*first as *mut uint32_t) as size_t;
    let mut first_len: size_t = *((*first)
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) as size_t;
    let mut second_bytes: size_t = *(*second as *mut uint32_t) as size_t;
    let mut second_len: size_t = *((*second)
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) as size_t;
    let mut append: libc::c_int = 0;
    let mut source: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut target: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut target_bytes: size_t = 0;
    let mut source_bytes: size_t = 0;
    if first_len >= second_len {
        target = *first;
        target_bytes = first_bytes;
        source = *second;
        source_bytes = second_bytes;
        append = 1 as libc::c_int;
    } else {
        target = *second;
        target_bytes = second_bytes;
        source = *first;
        source_bytes = first_bytes;
        append = 0 as libc::c_int;
    }
    let mut zlbytes: size_t = first_bytes
        .wrapping_add(second_bytes)
        .wrapping_sub(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong),
        )
        .wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong);
    let mut zllength: size_t = first_len.wrapping_add(second_len);
    zllength = if zllength < 65535 as libc::c_int as libc::c_ulong {
        zllength
    } else {
        65535 as libc::c_int as libc::c_ulong
    };
    if (zlbytes < 4294967295 as libc::c_uint as libc::c_ulong) as libc::c_int
        as libc::c_long != 0
    {} else {
        _serverAssert(
            b"zlbytes < UINT32_MAX\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            1086 as libc::c_int,
        );
        unreachable!();
    };
    let mut first_offset: size_t = *((*first)
        .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
        as *mut uint32_t) as size_t;
    let mut second_offset: size_t = *((*second)
        .offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
        as *mut uint32_t) as size_t;
    target = zrealloc(target as *mut libc::c_void, zlbytes) as *mut libc::c_uchar;
    if append != 0 {
        memcpy(
            target
                .offset(target_bytes as isize)
                .offset(-(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize))
                as *mut libc::c_void,
            source
                .offset(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                        .wrapping_add(
                            core::mem::size_of::<uint16_t>() as libc::c_ulong,
                        ) as isize,
                ) as *const libc::c_void,
            source_bytes
                .wrapping_sub(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                        .wrapping_add(
                            core::mem::size_of::<uint16_t>() as libc::c_ulong,
                        ),
                ),
        );
    } else {
        memmove(
            target
                .offset(source_bytes as isize)
                .offset(-(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize))
                as *mut libc::c_void,
            target
                .offset(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                        .wrapping_add(
                            core::mem::size_of::<uint16_t>() as libc::c_ulong,
                        ) as isize,
                ) as *const libc::c_void,
            target_bytes
                .wrapping_sub(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                        .wrapping_add(
                            core::mem::size_of::<uint16_t>() as libc::c_ulong,
                        ),
                ),
        );
        memcpy(
            target as *mut libc::c_void,
            source as *const libc::c_void,
            source_bytes.wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong),
        );
    }
    *(target as *mut uint32_t) = zlbytes as uint32_t;
    *(target
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) = zllength as uint16_t;
    *(target.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
        as *mut uint32_t) = first_bytes
        .wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong)
        .wrapping_add(
            second_offset
                .wrapping_sub(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                        .wrapping_add(
                            core::mem::size_of::<uint16_t>() as libc::c_ulong,
                        ),
                ),
        ) as uint32_t;
    target = __ziplistCascadeUpdate(target, target.offset(first_offset as isize));
    if append != 0 {
        zfree(*second as *mut libc::c_void);
        *second = 0 as *mut libc::c_uchar;
        *first = target;
    } else {
        zfree(*first as *mut libc::c_void);
        *first = 0 as *mut libc::c_uchar;
        *second = target;
    }
    return target;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistPush(
    mut zl: *mut libc::c_uchar,
    mut s: *mut libc::c_uchar,
    mut slen: libc::c_uint,
    mut where_0: libc::c_int,
) -> *mut libc::c_uchar {
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    p = if where_0 == 0 as libc::c_int {
        zl.offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                as isize,
        )
    } else {
        zl.offset(*(zl as *mut uint32_t) as isize)
            .offset(-(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize))
    };
    return __ziplistInsert(zl, p, s, slen);
}
#[no_mangle]
pub unsafe extern "C" fn ziplistIndex(
    mut zl: *mut libc::c_uchar,
    mut index: libc::c_int,
) -> *mut libc::c_uchar {
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut prevlensize: libc::c_uint = 0;
    let mut prevlen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut zlbytes: size_t = *(zl as *mut uint32_t) as size_t;
    if index < 0 as libc::c_int {
        index = -index - 1 as libc::c_int;
        p = zl
            .offset(
                *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                    as *mut uint32_t) as isize,
            );
        if *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
            if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int
            {
                prevlensize = 1 as libc::c_int as libc::c_uint;
            } else {
                prevlensize = 5 as libc::c_int as libc::c_uint;
            }
            if (p.offset(prevlensize as isize)
                < zl
                    .offset(zlbytes as isize)
                    .offset(
                        -(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize),
                    )) as libc::c_int as libc::c_long != 0
            {} else {
                _serverAssert(
                    b"p + prevlensize < zl + zlbytes - ZIPLIST_END_SIZE\0" as *const u8
                        as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    1164 as libc::c_int,
                );
                unreachable!();
            };
            if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int
            {
                prevlensize = 1 as libc::c_int as libc::c_uint;
            } else {
                prevlensize = 5 as libc::c_int as libc::c_uint;
            }
            if prevlensize == 1 as libc::c_int as libc::c_uint {
                prevlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
            } else {
                prevlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
                    << 24 as libc::c_int
                    | (*p.offset(3 as libc::c_int as isize) as libc::c_int)
                        << 16 as libc::c_int
                    | (*p.offset(2 as libc::c_int as isize) as libc::c_int)
                        << 8 as libc::c_int
                    | *p.offset(1 as libc::c_int as isize) as libc::c_int)
                    as libc::c_uint;
            }
            while prevlen > 0 as libc::c_int as libc::c_uint
                && {
                    let fresh0 = index;
                    index = index - 1;
                    fresh0 != 0
                }
            {
                p = p.offset(-(prevlen as isize));
                if (p
                    >= zl
                        .offset(
                            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                                .wrapping_add(
                                    core::mem::size_of::<uint16_t>() as libc::c_ulong,
                                ) as isize,
                        )
                    && p
                        < zl
                            .offset(zlbytes as isize)
                            .offset(
                                -(core::mem::size_of::<uint8_t>() as libc::c_ulong
                                    as isize),
                            )) as libc::c_int as libc::c_long != 0
                {} else {
                    _serverAssert(
                        b"p >= zl + ZIPLIST_HEADER_SIZE && p < zl + zlbytes - ZIPLIST_END_SIZE\0"
                            as *const u8 as *const libc::c_char,
                        b"ziplist.c\0" as *const u8 as *const libc::c_char,
                        1168 as libc::c_int,
                    );
                    unreachable!();
                };
                if (*p.offset(0 as libc::c_int as isize) as libc::c_int)
                    < 254 as libc::c_int
                {
                    prevlensize = 1 as libc::c_int as libc::c_uint;
                } else {
                    prevlensize = 5 as libc::c_int as libc::c_uint;
                }
                if prevlensize == 1 as libc::c_int as libc::c_uint {
                    prevlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
                } else {
                    prevlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
                        << 24 as libc::c_int
                        | (*p.offset(3 as libc::c_int as isize) as libc::c_int)
                            << 16 as libc::c_int
                        | (*p.offset(2 as libc::c_int as isize) as libc::c_int)
                            << 8 as libc::c_int
                        | *p.offset(1 as libc::c_int as isize) as libc::c_int)
                        as libc::c_uint;
                }
            }
        }
    } else {
        p = zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                    .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                    as isize,
            );
        loop {
            let fresh1 = index;
            index = index - 1;
            if !(fresh1 != 0) {
                break;
            }
            p = p.offset(zipRawEntryLengthSafe(zl, zlbytes, p) as isize);
            if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int
            {
                break;
            }
        }
    }
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int
        || index > 0 as libc::c_int
    {
        return 0 as *mut libc::c_uchar;
    }
    zipAssertValidEntry(zl, zlbytes, p);
    return p;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistNext(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
) -> *mut libc::c_uchar {
    let mut zlbytes: size_t = *(zl as *mut uint32_t) as size_t;
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int {
        return 0 as *mut libc::c_uchar;
    }
    p = p.offset(zipRawEntryLength(p) as isize);
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int {
        return 0 as *mut libc::c_uchar;
    }
    zipAssertValidEntry(zl, zlbytes, p);
    return p;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistPrev(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
) -> *mut libc::c_uchar {
    let mut prevlensize: libc::c_uint = 0;
    let mut prevlen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int {
        p = zl
            .offset(
                *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
                    as *mut uint32_t) as isize,
            );
        return if *p.offset(0 as libc::c_int as isize) as libc::c_int
            == 255 as libc::c_int
        {
            0 as *mut libc::c_uchar
        } else {
            p
        };
    } else if p
        == zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                    .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                    as isize,
            )
    {
        return 0 as *mut libc::c_uchar
    } else {
        if (*p.offset(0 as libc::c_int as isize) as libc::c_int) < 254 as libc::c_int {
            prevlensize = 1 as libc::c_int as libc::c_uint;
        } else {
            prevlensize = 5 as libc::c_int as libc::c_uint;
        }
        if prevlensize == 1 as libc::c_int as libc::c_uint {
            prevlen = *p.offset(0 as libc::c_int as isize) as libc::c_uint;
        } else {
            prevlen = ((*p.offset(4 as libc::c_int as isize) as libc::c_int)
                << 24 as libc::c_int
                | (*p.offset(3 as libc::c_int as isize) as libc::c_int)
                    << 16 as libc::c_int
                | (*p.offset(2 as libc::c_int as isize) as libc::c_int)
                    << 8 as libc::c_int
                | *p.offset(1 as libc::c_int as isize) as libc::c_int) as libc::c_uint;
        }
        if (prevlen > 0 as libc::c_int as libc::c_uint) as libc::c_int as libc::c_long
            != 0
        {} else {
            _serverAssert(
                b"prevlen > 0\0" as *const u8 as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                1228 as libc::c_int,
            );
            unreachable!();
        };
        p = p.offset(-(prevlen as isize));
        let mut zlbytes: size_t = *(zl as *mut uint32_t) as size_t;
        zipAssertValidEntry(zl, zlbytes, p);
        return p;
    };
}
#[no_mangle]
pub unsafe extern "C" fn ziplistGet(
    mut p: *mut libc::c_uchar,
    mut sstr: *mut *mut libc::c_uchar,
    mut slen: *mut libc::c_uint,
    mut sval: *mut libc::c_longlong,
) -> libc::c_uint {
    let mut entry: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    if p.is_null()
        || *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int
    {
        return 0 as libc::c_int as libc::c_uint;
    }
    if !sstr.is_null() {
        *sstr = 0 as *mut libc::c_uchar;
    }
    zipEntry(p, &mut entry);
    if (entry.encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
        if !sstr.is_null() {
            *slen = entry.len;
            *sstr = p.offset(entry.headersize as isize);
        }
    } else if !sval.is_null() {
        *sval = zipLoadInteger(p.offset(entry.headersize as isize), entry.encoding)
            as libc::c_longlong;
    }
    return 1 as libc::c_int as libc::c_uint;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistInsert(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
    mut s: *mut libc::c_uchar,
    mut slen: libc::c_uint,
) -> *mut libc::c_uchar {
    return __ziplistInsert(zl, p, s, slen);
}
#[no_mangle]
pub unsafe extern "C" fn ziplistDelete(
    mut zl: *mut libc::c_uchar,
    mut p: *mut *mut libc::c_uchar,
) -> *mut libc::c_uchar {
    let mut offset: size_t = (*p).offset_from(zl) as libc::c_long as size_t;
    zl = __ziplistDelete(zl, *p, 1 as libc::c_int as libc::c_uint);
    *p = zl.offset(offset as isize);
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistDeleteRange(
    mut zl: *mut libc::c_uchar,
    mut index: libc::c_int,
    mut num: libc::c_uint,
) -> *mut libc::c_uchar {
    let mut p: *mut libc::c_uchar = ziplistIndex(zl, index);
    return if p.is_null() { zl } else { __ziplistDelete(zl, p, num) };
}
#[no_mangle]
pub unsafe extern "C" fn ziplistReplace(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
    mut s: *mut libc::c_uchar,
    mut slen: libc::c_uint,
) -> *mut libc::c_uchar {
    let mut entry: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    zipEntry(p, &mut entry);
    let mut reqlen: libc::c_uint = 0;
    let mut encoding: libc::c_uchar = 0 as libc::c_int as libc::c_uchar;
    let mut value: libc::c_longlong = 123456789 as libc::c_int as libc::c_longlong;
    if zipTryEncoding(s, slen, &mut value, &mut encoding) != 0 {
        reqlen = zipIntSize(encoding);
    } else {
        reqlen = slen;
    }
    reqlen = reqlen
        .wrapping_add(zipStoreEntryEncoding(0 as *mut libc::c_uchar, encoding, slen));
    if reqlen == (entry.lensize).wrapping_add(entry.len) {
        p = p.offset(entry.prevrawlensize as isize);
        p = p.offset(zipStoreEntryEncoding(p, encoding, slen) as isize);
        if (encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
            memcpy(
                p as *mut libc::c_void,
                s as *const libc::c_void,
                slen as libc::c_ulong,
            );
        } else {
            zipSaveInteger(p, value as int64_t, encoding);
        }
    } else {
        zl = ziplistDelete(zl, &mut p);
        zl = ziplistInsert(zl, p, s, slen);
    }
    return zl;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistCompare(
    mut p: *mut libc::c_uchar,
    mut sstr: *mut libc::c_uchar,
    mut slen: libc::c_uint,
) -> libc::c_uint {
    let mut entry: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    let mut sencoding: libc::c_uchar = 0;
    let mut zval: libc::c_longlong = 0;
    let mut sval: libc::c_longlong = 0;
    if *p.offset(0 as libc::c_int as isize) as libc::c_int == 255 as libc::c_int {
        return 0 as libc::c_int as libc::c_uint;
    }
    zipEntry(p, &mut entry);
    if (entry.encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
        if entry.len == slen {
            return (memcmp(
                p.offset(entry.headersize as isize) as *const libc::c_void,
                sstr as *const libc::c_void,
                slen as libc::c_ulong,
            ) == 0 as libc::c_int) as libc::c_int as libc::c_uint
        } else {
            return 0 as libc::c_int as libc::c_uint
        }
    } else {
        if zipTryEncoding(sstr, slen, &mut sval, &mut sencoding) != 0 {
            zval = zipLoadInteger(p.offset(entry.headersize as isize), entry.encoding)
                as libc::c_longlong;
            return (zval == sval) as libc::c_int as libc::c_uint;
        }
    }
    return 0 as libc::c_int as libc::c_uint;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistFind(
    mut zl: *mut libc::c_uchar,
    mut p: *mut libc::c_uchar,
    mut vstr: *mut libc::c_uchar,
    mut vlen: libc::c_uint,
    mut skip: libc::c_uint,
) -> *mut libc::c_uchar {
    let mut skipcnt: libc::c_int = 0 as libc::c_int;
    let mut vencoding: libc::c_uchar = 0 as libc::c_int as libc::c_uchar;
    let mut vll: libc::c_longlong = 0 as libc::c_int as libc::c_longlong;
    let mut zlbytes: size_t = ziplistBlobLen(zl);
    while *p.offset(0 as libc::c_int as isize) as libc::c_int != 255 as libc::c_int {
        let mut e: zlentry = zlentry {
            prevrawlensize: 0,
            prevrawlen: 0,
            lensize: 0,
            len: 0,
            headersize: 0,
            encoding: 0,
            p: 0 as *mut libc::c_uchar,
        };
        let mut q: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
        if (zipEntrySafe(zl, zlbytes, p, &mut e, 1 as libc::c_int) != 0) as libc::c_int
            as libc::c_long != 0
        {} else {
            _serverAssert(
                b"zipEntrySafe(zl, zlbytes, p, &e, 1)\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                1360 as libc::c_int,
            );
            unreachable!();
        };
        q = p.offset(e.prevrawlensize as isize).offset(e.lensize as isize);
        if skipcnt == 0 as libc::c_int {
            if (e.encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
                if e.len == vlen
                    && memcmp(
                        q as *const libc::c_void,
                        vstr as *const libc::c_void,
                        vlen as libc::c_ulong,
                    ) == 0 as libc::c_int
                {
                    return p;
                }
            } else {
                if vencoding as libc::c_int == 0 as libc::c_int {
                    if zipTryEncoding(vstr, vlen, &mut vll, &mut vencoding) == 0 {
                        vencoding = (127 as libc::c_int * 2 as libc::c_int
                            + 1 as libc::c_int) as libc::c_uchar;
                    }
                    if (vencoding != 0) as libc::c_int as libc::c_long != 0 {} else {
                        _serverAssert(
                            b"vencoding\0" as *const u8 as *const libc::c_char,
                            b"ziplist.c\0" as *const u8 as *const libc::c_char,
                            1381 as libc::c_int,
                        );
                        unreachable!();
                    };
                }
                if vencoding as libc::c_int
                    != 127 as libc::c_int * 2 as libc::c_int + 1 as libc::c_int
                {
                    let mut ll: libc::c_longlong = zipLoadInteger(q, e.encoding)
                        as libc::c_longlong;
                    if ll == vll {
                        return p;
                    }
                }
            }
            skipcnt = skip as libc::c_int;
        } else {
            skipcnt -= 1;
        }
        p = q.offset(e.len as isize);
    }
    return 0 as *mut libc::c_uchar;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistLen(mut zl: *mut libc::c_uchar) -> libc::c_uint {
    let mut len: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    if (*(zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) as libc::c_int) < 65535 as libc::c_int
    {
        len = *(zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
            ) as *mut uint16_t) as libc::c_uint;
    } else {
        let mut p: *mut libc::c_uchar = zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                    .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                    as isize,
            );
        let mut zlbytes: size_t = *(zl as *mut uint32_t) as size_t;
        while *p as libc::c_int != 255 as libc::c_int {
            p = p.offset(zipRawEntryLengthSafe(zl, zlbytes, p) as isize);
            len = len.wrapping_add(1);
        }
        if len < 65535 as libc::c_int as libc::c_uint {
            *(zl
                .offset(
                    (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                        .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
                ) as *mut uint16_t) = len as uint16_t;
        }
    }
    return len;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistBlobLen(mut zl: *mut libc::c_uchar) -> size_t {
    return *(zl as *mut uint32_t) as size_t;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistRepr(mut zl: *mut libc::c_uchar) {
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut index: libc::c_int = 0 as libc::c_int;
    let mut entry: zlentry = zlentry {
        prevrawlensize: 0,
        prevrawlen: 0,
        lensize: 0,
        len: 0,
        headersize: 0,
        encoding: 0,
        p: 0 as *mut libc::c_uchar,
    };
    let mut zlbytes: size_t = ziplistBlobLen(zl);
    printf(
        b"{total bytes %u} {num entries %u}\n{tail offset %u}\n\0" as *const u8
            as *const libc::c_char,
        *(zl as *mut uint32_t),
        *(zl
            .offset(
                (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                    .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
            ) as *mut uint16_t) as libc::c_int,
        *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
            as *mut uint32_t),
    );
    p = zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                as isize,
        );
    while *p as libc::c_int != 255 as libc::c_int {
        if (zipEntrySafe(zl, zlbytes, p, &mut entry, 1 as libc::c_int) != 0)
            as libc::c_int as libc::c_long != 0
        {} else {
            _serverAssert(
                b"zipEntrySafe(zl, zlbytes, p, &entry, 1)\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                1448 as libc::c_int,
            );
            unreachable!();
        };
        printf(
            b"{\n\taddr 0x%08lx,\n\tindex %2d,\n\toffset %5lu,\n\thdr+entry len: %5u,\n\thdr len%2u,\n\tprevrawlen: %5u,\n\tprevrawlensize: %2u,\n\tpayload %5u\n\0"
                as *const u8 as *const libc::c_char,
            p as libc::c_ulong,
            index,
            p.offset_from(zl) as libc::c_long as libc::c_ulong,
            (entry.headersize).wrapping_add(entry.len),
            entry.headersize,
            entry.prevrawlen,
            entry.prevrawlensize,
            entry.len,
        );
        printf(b"\tbytes: \0" as *const u8 as *const libc::c_char);
        let mut i: libc::c_uint = 0 as libc::c_int as libc::c_uint;
        while i < (entry.headersize).wrapping_add(entry.len) {
            printf(
                b"%02x|\0" as *const u8 as *const libc::c_char,
                *p.offset(i as isize) as libc::c_int,
            );
            i = i.wrapping_add(1);
        }
        printf(b"\n\0" as *const u8 as *const libc::c_char);
        p = p.offset(entry.headersize as isize);
        if (entry.encoding as libc::c_int & 0xc0 as libc::c_int) < 0xc0 as libc::c_int {
            printf(b"\t[str]\0" as *const u8 as *const libc::c_char);
            if entry.len > 40 as libc::c_int as libc::c_uint {
                if fwrite(
                    p as *const libc::c_void,
                    40 as libc::c_int as libc::c_ulong,
                    1 as libc::c_int as libc::c_ulong,
                    stdout,
                ) == 0 as libc::c_int as libc::c_ulong
                {
                    perror(b"fwrite\0" as *const u8 as *const libc::c_char);
                }
                printf(b"...\0" as *const u8 as *const libc::c_char);
            } else if entry.len != 0
                && fwrite(
                    p as *const libc::c_void,
                    entry.len as libc::c_ulong,
                    1 as libc::c_int as libc::c_ulong,
                    stdout,
                ) == 0 as libc::c_int as libc::c_ulong
            {
                perror(b"fwrite\0" as *const u8 as *const libc::c_char);
            }
        } else {
            printf(
                b"\t[int]%lld\0" as *const u8 as *const libc::c_char,
                zipLoadInteger(p, entry.encoding) as libc::c_longlong,
            );
        }
        printf(b"\n}\n\0" as *const u8 as *const libc::c_char);
        p = p.offset(entry.len as isize);
        index += 1;
    }
    printf(b"{end}\n\n\0" as *const u8 as *const libc::c_char);
}
#[no_mangle]
pub unsafe extern "C" fn ziplistValidateIntegrity(
    mut zl: *mut libc::c_uchar,
    mut size: size_t,
    mut deep: libc::c_int,
    mut entry_cb: ziplistValidateEntryCB,
    mut cb_userdata: *mut libc::c_void,
) -> libc::c_int {
    if size
        < (core::mem::size_of::<uint32_t>() as libc::c_ulong)
            .wrapping_mul(2 as libc::c_int as libc::c_ulong)
            .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
            .wrapping_add(core::mem::size_of::<uint8_t>() as libc::c_ulong)
    {
        return 0 as libc::c_int;
    }
    let mut bytes: size_t = *(zl as *mut uint32_t) as size_t;
    if bytes != size {
        return 0 as libc::c_int;
    }
    if *zl
        .offset(
            size.wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong)
                as isize,
        ) as libc::c_int != 255 as libc::c_int
    {
        return 0 as libc::c_int;
    }
    if *(zl.offset(core::mem::size_of::<uint32_t>() as libc::c_ulong as isize)
        as *mut uint32_t) as libc::c_ulong
        > size.wrapping_sub(core::mem::size_of::<uint8_t>() as libc::c_ulong)
    {
        return 0 as libc::c_int;
    }
    if deep == 0 {
        return 1 as libc::c_int;
    }
    let mut count: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut header_count: libc::c_uint = *(zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong) as isize,
        ) as *mut uint16_t) as libc::c_uint;
    let mut p: *mut libc::c_uchar = zl
        .offset(
            (core::mem::size_of::<uint32_t>() as libc::c_ulong)
                .wrapping_mul(2 as libc::c_int as libc::c_ulong)
                .wrapping_add(core::mem::size_of::<uint16_t>() as libc::c_ulong)
                as isize,
        );
    let mut prev: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut prev_raw_size: size_t = 0 as libc::c_int as size_t;
    while *p as libc::c_int != 255 as libc::c_int {
        let mut e: zlentry = zlentry {
            prevrawlensize: 0,
            prevrawlen: 0,
            lensize: 0,
            len: 0,
            headersize: 0,
            encoding: 0,
            p: 0 as *mut libc::c_uchar,
        };
        if zipEntrySafe(zl, size, p, &mut e, 1 as libc::c_int) == 0 {
            return 0 as libc::c_int;
        }
        if e.prevrawlen as libc::c_ulong != prev_raw_size {
            return 0 as libc::c_int;
        }
        if entry_cb.is_some()
            && entry_cb.expect("non-null function pointer")(p, header_count, cb_userdata)
                == 0
        {
            return 0 as libc::c_int;
        }
        prev_raw_size = (e.headersize).wrapping_add(e.len) as size_t;
        prev = p;
        p = p.offset((e.headersize).wrapping_add(e.len) as isize);
        count = count.wrapping_add(1);
    }
    if p
        != zl
            .offset(bytes as isize)
            .offset(-(core::mem::size_of::<uint8_t>() as libc::c_ulong as isize))
    {
        return 0 as libc::c_int;
    }
    if !prev.is_null()
        && prev
            != zl
                .offset(
                    *(zl
                        .offset(
                            core::mem::size_of::<uint32_t>() as libc::c_ulong as isize,
                        ) as *mut uint32_t) as isize,
                )
    {
        return 0 as libc::c_int;
    }
    if header_count != 65535 as libc::c_int as libc::c_uint && count != header_count {
        return 0 as libc::c_int;
    }
    return 1 as libc::c_int;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistRandomPair(
    mut zl: *mut libc::c_uchar,
    mut total_count: libc::c_ulong,
    mut key: *mut ziplistEntry,
    mut val: *mut ziplistEntry,
) {
    let mut ret: libc::c_int = 0;
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    if (total_count != 0) as libc::c_int as libc::c_long != 0 {} else {
        _serverAssert(
            b"total_count\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            1567 as libc::c_int,
        );
        unreachable!();
    };
    let mut r: libc::c_int = (rand() as libc::c_ulong)
        .wrapping_rem(total_count)
        .wrapping_mul(2 as libc::c_int as libc::c_ulong) as libc::c_int;
    p = ziplistIndex(zl, r);
    ret = ziplistGet(p, &mut (*key).sval, &mut (*key).slen, &mut (*key).lval)
        as libc::c_int;
    if (ret != 0 as libc::c_int) as libc::c_int as libc::c_long != 0 {} else {
        _serverAssert(
            b"ret != 0\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            1573 as libc::c_int,
        );
        unreachable!();
    };
    if val.is_null() {
        return;
    }
    p = ziplistNext(zl, p);
    ret = ziplistGet(p, &mut (*val).sval, &mut (*val).slen, &mut (*val).lval)
        as libc::c_int;
    if (ret != 0 as libc::c_int) as libc::c_int as libc::c_long != 0 {} else {
        _serverAssert(
            b"ret != 0\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            1579 as libc::c_int,
        );
        unreachable!();
    };
}
#[no_mangle]
pub unsafe extern "C" fn uintCompare(
    mut a: *const libc::c_void,
    mut b: *const libc::c_void,
) -> libc::c_int {
    return (*(a as *mut libc::c_uint)).wrapping_sub(*(b as *mut libc::c_uint))
        as libc::c_int;
}
#[inline]
unsafe extern "C" fn ziplistSaveValue(
    mut val: *mut libc::c_uchar,
    mut len: libc::c_uint,
    mut lval: libc::c_longlong,
    mut dest: *mut ziplistEntry,
) {
    (*dest).sval = val;
    (*dest).slen = len;
    (*dest).lval = lval;
}
#[no_mangle]
pub unsafe extern "C" fn ziplistRandomPairs(
    mut zl: *mut libc::c_uchar,
    mut count: libc::c_uint,
    mut keys: *mut ziplistEntry,
    mut vals: *mut ziplistEntry,
) {
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut key: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut value: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut klen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut vlen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut klval: libc::c_longlong = 0 as libc::c_int as libc::c_longlong;
    let mut vlval: libc::c_longlong = 0 as libc::c_int as libc::c_longlong;
    let mut picks: *mut rand_pick = zmalloc(
        (core::mem::size_of::<rand_pick>() as libc::c_ulong)
            .wrapping_mul(count as libc::c_ulong),
    ) as *mut rand_pick;
    let mut total_size: libc::c_uint = (ziplistLen(zl))
        .wrapping_div(2 as libc::c_int as libc::c_uint);
    if (total_size != 0) as libc::c_int as libc::c_long != 0 {} else {
        _serverAssert(
            b"total_size\0" as *const u8 as *const libc::c_char,
            b"ziplist.c\0" as *const u8 as *const libc::c_char,
            1612 as libc::c_int,
        );
        unreachable!();
    };
    let mut i: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    while i < count {
        (*picks.offset(i as isize))
            .index = (rand() as libc::c_uint)
            .wrapping_rem(total_size)
            .wrapping_mul(2 as libc::c_int as libc::c_uint);
        (*picks.offset(i as isize)).order = i;
        i = i.wrapping_add(1);
    }
    qsort(
        picks as *mut libc::c_void,
        count as size_t,
        core::mem::size_of::<rand_pick>() as libc::c_ulong,
        Some(
            uintCompare
                as unsafe extern "C" fn(
                    *const libc::c_void,
                    *const libc::c_void,
                ) -> libc::c_int,
        ),
    );
    let mut zipindex: libc::c_uint = (*picks.offset(0 as libc::c_int as isize)).index;
    let mut pickindex: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    p = ziplistIndex(zl, zipindex as libc::c_int);
    while ziplistGet(p, &mut key, &mut klen, &mut klval) != 0 && pickindex < count {
        p = ziplistNext(zl, p);
        if (ziplistGet(p, &mut value, &mut vlen, &mut vlval) != 0) as libc::c_int
            as libc::c_long != 0
        {} else {
            _serverAssert(
                b"ziplistGet(p, &value, &vlen, &vlval)\0" as *const u8
                    as *const libc::c_char,
                b"ziplist.c\0" as *const u8 as *const libc::c_char,
                1629 as libc::c_int,
            );
            unreachable!();
        };
        while pickindex < count && zipindex == (*picks.offset(pickindex as isize)).index
        {
            let mut storeorder: libc::c_int = (*picks.offset(pickindex as isize)).order
                as libc::c_int;
            ziplistSaveValue(key, klen, klval, &mut *keys.offset(storeorder as isize));
            if !vals.is_null() {
                ziplistSaveValue(
                    value,
                    vlen,
                    vlval,
                    &mut *vals.offset(storeorder as isize),
                );
            }
            pickindex = pickindex.wrapping_add(1);
        }
        zipindex = zipindex.wrapping_add(2 as libc::c_int as libc::c_uint);
        p = ziplistNext(zl, p);
    }
    zfree(picks as *mut libc::c_void);
}
#[no_mangle]
pub unsafe extern "C" fn ziplistRandomPairsUnique(
    mut zl: *mut libc::c_uchar,
    mut count: libc::c_uint,
    mut keys: *mut ziplistEntry,
    mut vals: *mut ziplistEntry,
) -> libc::c_uint {
    let mut p: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut key: *mut libc::c_uchar = 0 as *mut libc::c_uchar;
    let mut klen: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut klval: libc::c_longlong = 0 as libc::c_int as libc::c_longlong;
    let mut total_size: libc::c_uint = (ziplistLen(zl))
        .wrapping_div(2 as libc::c_int as libc::c_uint);
    let mut index: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    if count > total_size {
        count = total_size;
    }
    p = ziplistIndex(zl, 0 as libc::c_int);
    let mut picked: libc::c_uint = 0 as libc::c_int as libc::c_uint;
    let mut remaining: libc::c_uint = count;
    while picked < count && !p.is_null() {
        let mut randomDouble: libc::c_double = rand() as libc::c_double
            / 2147483647 as libc::c_int as libc::c_double;
        let mut threshold: libc::c_double = remaining as libc::c_double
            / total_size.wrapping_sub(index) as libc::c_double;
        if randomDouble <= threshold {
            if (ziplistGet(p, &mut key, &mut klen, &mut klval) != 0) as libc::c_int
                as libc::c_long != 0
            {} else {
                _serverAssert(
                    b"ziplistGet(p, &key, &klen, &klval)\0" as *const u8
                        as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    1669 as libc::c_int,
                );
                unreachable!();
            };
            ziplistSaveValue(key, klen, klval, &mut *keys.offset(picked as isize));
            p = ziplistNext(zl, p);
            if !p.is_null() as libc::c_int as libc::c_long != 0 {} else {
                _serverAssert(
                    b"p\0" as *const u8 as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    1672 as libc::c_int,
                );
                unreachable!();
            };
            if !vals.is_null() {
                if (ziplistGet(p, &mut key, &mut klen, &mut klval) != 0) as libc::c_int
                    as libc::c_long != 0
                {} else {
                    _serverAssert(
                        b"ziplistGet(p, &key, &klen, &klval)\0" as *const u8
                            as *const libc::c_char,
                        b"ziplist.c\0" as *const u8 as *const libc::c_char,
                        1674 as libc::c_int,
                    );
                    unreachable!();
                };
                ziplistSaveValue(key, klen, klval, &mut *vals.offset(picked as isize));
            }
            remaining = remaining.wrapping_sub(1);
            picked = picked.wrapping_add(1);
        } else {
            p = ziplistNext(zl, p);
            if !p.is_null() as libc::c_int as libc::c_long != 0 {} else {
                _serverAssert(
                    b"p\0" as *const u8 as *const libc::c_char,
                    b"ziplist.c\0" as *const u8 as *const libc::c_char,
                    1681 as libc::c_int,
                );
                unreachable!();
            };
        }
        p = ziplistNext(zl, p);
        index = index.wrapping_add(1);
    }
    return picked;
}