COXave 1.0.6-beta.2

Instruments for codings
Documentation 
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/*
 * Copyright 2024 Stanislav Mikhailov (xavetar)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

use std::{
    mem::{
        transmute
    }
};

pub use crate::{
    essence::{
        ASCII
    }
};

impl ASCII {
    const fn is_not_ascii(code: u128) -> bool {
        return if (code & 0x80808080808080808080808080808080) != 0 { true } else { false };
    }

    const fn is_ascii(array: &[u128]) -> bool {
        let (mut index, length): (usize, usize) = (0_usize, array.len());

        while index < length { if ASCII::is_not_ascii(array[index]) { return false; } else { index += 1_usize; } }

        return true;
    }

    pub const fn is_ascii_from_byte_array(array: &[u8]) -> bool {
        let length: usize = array.len();

        let (mut index, indivisible, mut result): (usize, usize, bool) = (0_usize, length % 16_usize, true);

        if length == 0_usize { return false; }

        if indivisible != 0_usize {
            let indivisible_code_array: u128 = {
                let mut indivisible_code_array: [u8; 16_usize] = [0_u8; 16_usize];
                while index < indivisible { indivisible_code_array[index] = array[index]; index += 1_usize; }
                unsafe { transmute::<[u8; 16_usize], u128>(indivisible_code_array) }
            };

            result &= ASCII::is_ascii(&[indivisible_code_array]);
        }

        if result {
            let remains_length: usize = length - indivisible;

            if remains_length != 0_usize {
                result &= ASCII::is_ascii(unsafe { std::slice::from_raw_parts::<u128>(transmute::<*const u8, *const u128>(array.as_ptr().add(indivisible)), remains_length / 16_usize) });
            }
        }

        return result;
    }
}