prodigal-rs 0.3.4

Prokaryotic gene prediction — Prodigal rewritten in Rust
Documentation 
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use crate::training_data;
use crate::types::Training;
use std::ffi::CStr;
use std::fs::File;
use std::io::{Read, Write};
use std::os::raw::{c_char, c_int};

pub unsafe fn read_training_file(path: *const c_char, tinf: *mut Training) -> c_int {
    let path_str = match CStr::from_ptr(path).to_str() {
        Ok(s) => s,
        Err(_) => return 1,
    };
    let mut file = match File::open(path_str) {
        Ok(f) => f,
        Err(_) => return 1,
    };
    let size = std::mem::size_of::<Training>();
    let buf = std::slice::from_raw_parts_mut(tinf as *mut u8, size);
    match file.read_exact(buf) {
        Ok(()) => 0,
        Err(_) => -1,
    }
}

pub unsafe fn write_training_file(path: *const c_char, tinf: *mut Training) -> c_int {
    let path_str = match CStr::from_ptr(path).to_str() {
        Ok(s) => s,
        Err(_) => return -1,
    };
    let mut file = match File::create(path_str) {
        Ok(f) => f,
        Err(_) => return -1,
    };
    let size = std::mem::size_of::<Training>();
    let buf = std::slice::from_raw_parts(tinf as *const u8, size);
    match file.write_all(buf) {
        Ok(()) => 0,
        Err(_) => -1,
    }
}

// Generate all 50 initialize_metagenome_N functions
macro_rules! init_metagenome_fn {
    ($n:literal, $name:ident) => {
        pub unsafe fn $name(tptr: *mut Training) {
            training_data::load_metagenome($n, tptr);
        }
    };
}

init_metagenome_fn!(0, initialize_metagenome_0);
init_metagenome_fn!(1, initialize_metagenome_1);
init_metagenome_fn!(2, initialize_metagenome_2);
init_metagenome_fn!(3, initialize_metagenome_3);
init_metagenome_fn!(4, initialize_metagenome_4);
init_metagenome_fn!(5, initialize_metagenome_5);
init_metagenome_fn!(6, initialize_metagenome_6);
init_metagenome_fn!(7, initialize_metagenome_7);
init_metagenome_fn!(8, initialize_metagenome_8);
init_metagenome_fn!(9, initialize_metagenome_9);
init_metagenome_fn!(10, initialize_metagenome_10);
init_metagenome_fn!(11, initialize_metagenome_11);
init_metagenome_fn!(12, initialize_metagenome_12);
init_metagenome_fn!(13, initialize_metagenome_13);
init_metagenome_fn!(14, initialize_metagenome_14);
init_metagenome_fn!(15, initialize_metagenome_15);
init_metagenome_fn!(16, initialize_metagenome_16);
init_metagenome_fn!(17, initialize_metagenome_17);
init_metagenome_fn!(18, initialize_metagenome_18);
init_metagenome_fn!(19, initialize_metagenome_19);
init_metagenome_fn!(20, initialize_metagenome_20);
init_metagenome_fn!(21, initialize_metagenome_21);
init_metagenome_fn!(22, initialize_metagenome_22);
init_metagenome_fn!(23, initialize_metagenome_23);
init_metagenome_fn!(24, initialize_metagenome_24);
init_metagenome_fn!(25, initialize_metagenome_25);
init_metagenome_fn!(26, initialize_metagenome_26);
init_metagenome_fn!(27, initialize_metagenome_27);
init_metagenome_fn!(28, initialize_metagenome_28);
init_metagenome_fn!(29, initialize_metagenome_29);
init_metagenome_fn!(30, initialize_metagenome_30);
init_metagenome_fn!(31, initialize_metagenome_31);
init_metagenome_fn!(32, initialize_metagenome_32);
init_metagenome_fn!(33, initialize_metagenome_33);
init_metagenome_fn!(34, initialize_metagenome_34);
init_metagenome_fn!(35, initialize_metagenome_35);
init_metagenome_fn!(36, initialize_metagenome_36);
init_metagenome_fn!(37, initialize_metagenome_37);
init_metagenome_fn!(38, initialize_metagenome_38);
init_metagenome_fn!(39, initialize_metagenome_39);
init_metagenome_fn!(40, initialize_metagenome_40);
init_metagenome_fn!(41, initialize_metagenome_41);
init_metagenome_fn!(42, initialize_metagenome_42);
init_metagenome_fn!(43, initialize_metagenome_43);
init_metagenome_fn!(44, initialize_metagenome_44);
init_metagenome_fn!(45, initialize_metagenome_45);
init_metagenome_fn!(46, initialize_metagenome_46);
init_metagenome_fn!(47, initialize_metagenome_47);
init_metagenome_fn!(48, initialize_metagenome_48);
init_metagenome_fn!(49, initialize_metagenome_49);