xhartae/chapters/chapter_1.c

/*
Copyright (c) 2023 : Ognjen 'xolatile' Milan Robovic

Xhartae is free software! You will redistribute it or modify it under the terms of the GNU General Public License by Free Software Foundation.
And when you do redistribute it or modify it, it will use either version 3 of the License, or (at yours truly opinion) any later version.
It is distributed in the hope that it will be useful or harmful, it really depends... But no warranty what so ever, seriously. See GNU/GPLv3.
*/

#ifndef CHAPTER_1_SOURCE
#define CHAPTER_1_SOURCE

#include "chapter_1.h"

int character_is_uppercase (char character) {
	return ((int) ((character >= 'A') && (character <= 'Z')));
}

int character_is_lowercase (char character) {
	return ((int) ((character >= 'a') && (character <= 'z')));
}

int character_is_digit (char character) {
	return ((int) ((character >= '0') && (character <= '9')));
}

int character_is_blank (char character) {
	return ((int) ((character == ' ') || (character == CHARACTER_TAB_HORIZONTAL) || (character == CHARACTER_CARRIAGE_RETURN) || (character == CHARACTER_LINE_FEED)));
	// If you like smaller line length limit, you can align it like this:
	// return ((character == ' ')
	//      || (character == CHARACTER_TAB_HORIZONTAL)
	//      || (character == CHARACTER_CARRIAGE_RETURN)
	//      || (character == CHARACTER_LINE_FEED));
	// Or:
	// return ((character == ' ')                       ||
	//         (character == CHARACTER_TAB_HORIZONTAL)  ||
	//         (character == CHARACTER_CARRIAGE_RETURN) ||
	//         (character == CHARACTER_LINE_FEED));
	// Or even use literal characters:
	// return ((character == ' ')  ||
	//         (character == '\t') ||
	//         (character == '\r') ||
	//         (character == '\n'));
}

int character_is_alpha (char character) {
	return ((character_is_uppercase (character) != 0) || (character_is_lowercase (character) != 0));
}

int character_is_symbol (char character) {
	return (character_compare_array (character, "~!@#$%^&*()+{}|:\"<>?`-=[]\\;',./"));
}

int character_is_visible (char character) {
	return ((int) ((character >= ' ') && (character <= '~')));
}

int character_is_invisible (char character) {
	return (character_is_visible (character) == 0);
}

int character_is_escape (char character) {
	return ((int) (character == '\033'));
}

int character_is_underscore (char character) {
	return ((int) (character == '_'));
}

int character_is_hexadecimal (char character) {
	return (character_compare_array (character, "0123456789ABCDEF"));
}

int character_compare_array (char character, char * character_array) {
	int i;

	for (i = 0; i != string_length (character_array); ++i) {
		if (character == character_array [i]) {
			return (1);
		}
	}

	return (0);
}

#endif