Function compress2

#[export_name = "compress2"]
pub unsafe extern "C-unwind" fn compress2(
    dest: *mut Bytef,
    destLen: *mut c_ulong,
    source: *const Bytef,
    sourceLen: c_ulong,
    level: c_int,
) -> c_int

Compresses source into dest, and writes the final deflated size into destLen.

The level parameter has the same meaning as in deflateInit_. sourceLen is the byte length of the source buffer. Upon entry, destLen is the total size of the destination buffer, which must be at least the value returned by compressBound(sourceLen). Upon exit, destLen is the actual size of the compressed data.

Returns

• Z_OK if success
• Z_MEM_ERROR if there was not enough memory
• Z_BUF_ERROR if there was not enough room in the output buffer

Safety

The caller must guarantee that

• Either
  • destLen is NULL
  • destLen satisfies the requirements of &mut *destLen
• Either
  • dest is NULL
  • dest and *destLen satisfy the requirements of core::slice::from_raw_parts_mut::<MaybeUninit<u8>>
• Either
  • source is NULL
  • source and sourceLen satisfy the requirements of core::slice::from_raw_parts