samplecode/zlib-lazy-static-sample/enclave/src/lib.rs

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#![crate_name = "zlibsampleenclave"]
#![crate_type = "staticlib"]

#![no_std]

extern crate sgx_types;
#[macro_use]
extern crate sgx_tstd as std;
extern crate inflate;
extern crate libflate;
#[macro_use]
extern crate lazy_static;

use sgx_types::*;
use std::string::String;
use std::vec::Vec;
use std::str::from_utf8;

use inflate::inflate_bytes_zlib;
use libflate::zlib::Encoder;
use std::io::Write;

lazy_static! {
    static ref HELLOSTR : String = String::from("This is a global rust String init by lazy_static!");
}

#[no_mangle]
pub extern "C"
fn zlib_sample() -> sgx_status_t {
    println!("Source string is : {:?}", *HELLOSTR);
    println!("Source data is : {:?}", HELLOSTR.as_bytes());

    let mut encoder = Encoder::new(Vec::new()).unwrap();
    encoder.write_all(HELLOSTR.as_bytes()).unwrap();
    let encoded_data = encoder.finish().into_result().unwrap();

    println!("After zlib compress : {:?}", encoded_data);

    let decoded = inflate_bytes_zlib(&encoded_data[..]).unwrap();

    let decoded_string = from_utf8(&decoded[..]);
    println!("After zlib decompress: {:?}", decoded_string.unwrap());

    sgx_status_t::SGX_SUCCESS
}