v_jsonescape 0.2.1

The simd optimized JSON escaping code
Documentation 
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use std::env;

fn main() {
    enable_simd_optimizations();
}

fn enable_simd_optimizations() {
    if is_env_set("CARGO_CFG_JSONESCAPE_DISABLE_AUTO_SIMD") {
        return;
    }

    println!("cargo:rustc-cfg=v_jsonescape_simd");
    println!("cargo:rustc-cfg=v_jsonescape_sse");

    if !is_env_set("CARGO_CFG_JSONESCAPE_DISABLE_AUTO_AVX") {
        println!("cargo:rustc-cfg=v_jsonescape_avx");
    }
}

fn is_env_set(name: &str) -> bool {
    env::var(name).is_ok()
}