91 lines
2.3 KiB
C
91 lines
2.3 KiB
C
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/*
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Copyright (c) 2023 : Ognjen 'xolatile' Milan Robovic
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Xhartae is free software! You will redistribute it or modify it under the terms of the GNU General Public License by Free Software Foundation.
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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.
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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.
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*/
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#ifndef CHAPTER_0_SOURCE
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#define CHAPTER_0_SOURCE
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#include "chapter_0.h"
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void in (void * data, int size) {
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fatal_failure (data == NULL, "in: Failed to read from standard input, data is null pointer.");
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fatal_failure (size == 0, "in: Failed to read from standard input, size is zero.");
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(void) read (STDIN_FILENO, data, (unsigned long int) size);
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}
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void out (void * data, int size) {
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fatal_failure (data == NULL, "out: Failed to write to standard output, data is null pointer.");
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fatal_failure (size == 0, "out: Failed to write to standard output, size is zero.");
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(void) write (STDOUT_FILENO, data, (unsigned long int) size);
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}
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void echo (char * string) {
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out (string, string_length (string));
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}
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void fatal_failure (int condition, char * message) {
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if (condition != 0) {
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echo ("[\033[1;31mExiting\033[0m] ");
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echo (message);
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echo ("\n");
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exit (EXIT_FAILURE);
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}
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}
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void limit (int * value, int minimum, int maximum) {
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if (value == NULL) { /* We shouldn't dereference null pointer, but also don't want to abort the program for small mistake. */
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return;
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}
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if (* value <= minimum) {
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* value = minimum;
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}
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if (* value >= maximum) {
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* value = maximum;
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}
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}
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void * allocate (int size) {
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char * data = NULL;
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if (size <= 0) {
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return (NULL);
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}
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data = calloc ((unsigned long int) size, sizeof (* data));
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fatal_failure (data == NULL, "standard : allocate : Failed to allocate memory, internal function 'calloc' returned null pointer.");
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return ((void *) data);
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}
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void * reallocate (void * data, int size) {
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if (size <= 0) {
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return (data);
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}
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data = realloc (data, (unsigned long int) size);
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fatal_failure (data == NULL, "standard : reallocate: Failed to reallocate memory, internal function 'realloc' returned null pointer.");
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return (data);
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}
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void * deallocate (void * data) {
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if (data != NULL) {
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free (data);
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}
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return (NULL);
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}
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#endif
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