libUFN/inc-c/ufn/ufn_ascii.h

#ifndef UFN_ASCII_H
#define UFN_ASCII_H

#include <stdbool.h>
#include <stdint.h>

bool ufn_is_ascii_lowercase(char character);
bool ufn_is_ascii_uppercase(char character);
bool ufn_is_ascii_letter(char character);
bool ufn_is_ascii_digit(char character);
bool ufn_is_ascii_sign(char character);
bool ufn_is_ascii_blank(char character);
bool ufn_is_ascii_control(char character);
uint8_t ufn_check_ascii_newline(const char *text, uint32_t remaining);

#ifdef UFN_IMPLEMENTATION

bool ufn_is_ascii_lowercase(char character)
{
    if(character < 'a')
    {
        return false;
    }
    if(character > 'z')
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_uppercase(char character)
{
    if(character < 'A')
    {
        return false;
    }
    if(character > 'Z')
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_letter(char character)
{
    if(ufn_is_ascii_uppercase(character))
    {
        return true;
    }
    if(ufn_is_ascii_lowercase(character))
    {
        return true;
    }
    return false;
}

bool ufn_is_ascii_digit(char character)
{
    if(character < '0')
    {
        return false;
    }
    if(character > '9')
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_sign_1(char character)
{
    if(character < 0x21)
    {
        return false;
    }
    if(character > 0x2f)
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_sign_2(char character)
{

    if(character < 0x3a)
    {
        return false;
    }
    if(character > 0x40)
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_sign_3(char character)
{
    if(character < 0x5b)
    {
        return false;
    }
    if(character > 0x60)
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_sign_4(char character)
{
    if(character < 0x7b)
    {
        return false;
    }
    if(character > 0x7e)
    {
        return false;
    }
    return true;
}

bool ufn_is_ascii_sign(char character)
{
    if(ufn_is_ascii_sign_1(character))
    {
        return true;
    }
    if(ufn_is_ascii_sign_2(character))
    {
        return true;
    }
    if(ufn_is_ascii_sign_3(character))
    {
        return true;
    }
    if(ufn_is_ascii_sign_4(character))
    {
        return true;
    }
    return false;
}

bool ufn_is_ascii_blank(char character)
{
    if(character == ' ')
    {
        return true;
    }
    if(character == '\t')
    {
        return true;
    }
    return false;
}

bool ufn_is_ascii_control(char character)
{
    if(character < 32)
    {
        return true;
    }
    if(character == 127)
    {
        return true;
    }
    return false;
}

uint8_t ufn_check_ascii_newline(const char *text, uint32_t remaining)
{
    if(remaining == 0)
    {
        return 0;
    }
    if(remaining < 2)
    {
        if(text[0] == '\n')
        {
            return 1;
        }
        return 0;
    }
    uint8_t length = 0;
    if(text[0] == '\r')
    {
        length = 1;
    }
    if(text[length] == '\r')
    {
        ++length;
    }
    return length;
}

#endif // UFN_IMPLEMENTATION

#endif // UFN_ASCII_H