CToolBox/src/toolbox/cstring.c

#include "toolbox/cstring.h"
#include "toolbox/log.h"

#include <stdbool.h>
#include <stddef.h>
#include <stdlib.h>

#define TEST_FOR_NULL(POINTER)											\
	if ( POINTER == NULL )												\
		{																\
			LOG_ERROR("Null Pointer Not Expected");					\
			exit(EXIT_FAILURE);										\
		}

size_t
cstring_len(const char *p_cstr) {
	TEST_FOR_NULL(p_cstr);
	size_t len = 0;
	while ( *(p_cstr + len++) ) {}
	return --len;
}

bool
cstring_equal(const char *restrict p_cstr1, const char *restrict p_cstr2) {
	const size_t cstr1_size = cstring_len(p_cstr1);
	const size_t cstr2_size = cstring_len(p_cstr2);
	if ( cstr1_size != cstr2_size ) {
		return false;
	}
	for ( size_t i = 0; i < cstr1_size; ++i ) {
		if ( p_cstr1[i] != p_cstr2[i] ) {
			return false;
		}
	}
	return true;
}

#undef TEST_FOR_NULL