string_manipulation

string_manipulation.c

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>

char * create_char_vector(int i)
{
	char *vector;
	vector = (char *) calloc(i + 1,sizeof(char *));
	vector[i+1] = 0;
	return vector; 
}

void print_char_vector(char * array)
{
	int i;
	printf("\n");
	for (i = 0; i < strlen(array); ++i) printf("\%c",array[i]);
}

void free_char_array(char ** array)
{
	int i = 0;

	do {
		free(array);
		++i;
	} while (array[i]);
	free(array);
}

void print_char_array(char ** array)
{
	int i = 0;

	do 
	{	
		printf("\n%s",array[i]);
		++i;
	} while (array[i]);
}


char * string_upcase(char *vector)
{
	int i;
	char *result_vector = create_char_vector(strlen(vector)+1);

	for(i = 0; i < strlen(vector)+1; ++i) result_vector[i] = toupper(vector[i]);
	return result_vector;
}



char * string_downcase( char *vector)
{
	int i;
	char *result_vector = create_char_vector(strlen(vector));

	for(i = 0; i < strlen(vector); ++i) result_vector[i] = tolower(vector[i]);
	return result_vector;
}

char * string_reverse( char *vector)
{
	int i;
	char *result_vector = create_char_vector(strlen(vector));

	for(i = 0; i < strlen(vector); ++i) result_vector[i] = vector[strlen(vector) - 1 - i];
	return result_vector;
}

int string_compare( char *vector_a, char *vector_b)
{
	int i;
	char *temp1 = create_char_vector(strlen(vector_a));
	char *temp2 = create_char_vector(strlen(vector_b));
	
	temp1 = string_downcase(vector_a);
	temp2 = string_downcase(vector_b);

	i = strcmp(temp1,temp2);
	free(temp1);
	free(temp2);
	return i;
}

char ** string_split(char *char_vector, char sign)
{
	char *string;
	char *rest;
	char *temp = char_vector;
	char **array;
	int i;
	int count = 0;

	for(i = 0; i < strlen(temp); ++i)
	{
		if (temp[i] == sign) ++count;
	}

	array = (char **) calloc(count + 1, sizeof(char*));

	i = 0;
        while(string = strtok_s(temp,&sign, &rest)) {
		array[i] = create_char_vector(strlen(string));
		array[i] = string;
		temp = rest;  
		++i;
    }
	array[count + 1] = 0;
	return array;
}

void pstring_split(char *char_vector, char sign)
{
	char *string;
	char *rest;
	char *temp = char_vector;
	int i;

	i = 0;
	while(string = strtok_s(temp,&sign, &rest)) {
		print_char_vector(string);
		temp = rest;  
		++i;
    }
}

int main(int argc, char *argv[])
{

	char text1[] = {"lubie duze literki\0"};
	char text2[] = {"ty tez jestes bogiem\0"};
	char text3[] = {"acnok do einm zsipan\0"};
	char text4[] = {"Ty Tez jeStes Bogiem\0"};
	char *string;
	char **array;
	char delimiter = ' ';

	printf("string = %s",text1);

	printf("\n\nstring_upcase(\"%s\") = ",text1); 
	string = string_upcase(text1);
	printf("%s",string);

	printf("\n\nstring_downcase(\"%s\") = ",string); 
	string = string_downcase(text1);
	printf("%s",string);

	printf("\n\nstring_reverse(\"%s\") = ",text3);
	string = string_reverse(text3);
	printf("%s",string);

	printf("\n\nstrcmp(\"%s\", \"%s\") = ",text2,text4);
	printf("%d",strcmp(text2,text4));

	printf("\n\nstring_compare(\"%s\", \"%s\") = ",text2,text4);
	printf("%d",string_compare(text2,text4));

	printf("\n\nstring_split (\"%s\" ,\"%c\") = \n",text2,delimiter);

	array = string_split(text3,delimiter);
	print_char_array(array);
	
	printf("\n\npstring_split (\"%s\" ,\"%c\") = \n",text4,delimiter);
	pstring_split(text4,delimiter);

	free(string);
	//free_char_array(array);

	getchar();
	return 1;

}