logic_gate.c
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#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include "auxiliar.h"
int check_length(char **inputs, uint8_t num_inputs)
{
int i;
int length = strlen(inputs[0]);
for(i = 1; i < num_inputs; i++)
{
if(strlen(inputs[i]) != length)
{
return -1;
}
}
return length;
}
char* or(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x00, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] |= inputs[j][i];
}
if(result[i])
{
result[i] = '1';
}
else
{
result[i] = '0';
}
}
return result;
}
char* nor(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x00, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] |= inputs[j][i];
}
if(result[i])
{
result[i] = '0';
}
else
{
result[i] = '1';
}
}
return result;
}
char* xor(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x00, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] ^= inputs[j][i];
}
if(result[i])
{
result[i] = '1';
}
else
{
result[i] = '0';
}
}
return result;
}
char* xnor(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x00, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] ^= inputs[j][i];
}
if(result[i])
{
result[i] = '0';
}
else
{
result[i] = '1';
}
}
return result;
}
char* and(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x01, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] &= inputs[j][i];
}
if(result[i])
{
result[i] = '1';
}
else
{
result[i] = '0';
}
}
return result;
}
char* nand(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x01, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] &= inputs[j][i];
}
if(result[i])
{
result[i] = '0';
}
else
{
result[i] = '1';
}
}
return result;
}
char* not(char **inputs, int num_inputs, int input_length)
{
int i;
int j;
char *result = malloc(sizeof(char) * (input_length + 1));
memset(result, 0x01, input_length+1);
for(i = 0; i < input_length; i++)
{
for(j = 0; j < num_inputs; j++)
{
result[i] = inputs[j][i];
}
if(result[i])
{
result[i] = '0';
}
else
{
result[i] = '1';
}
}
return result;
}
int main(int argc, char **argv)
{
if(argc != 2)
{
error();
}
char *input = argv[1];
if(!strcmp(input,"error"))
{
error();
}
char **inputs = comma_separate(input);
if(inputs == NULL)
{
error();
}
int num_inputs = num_occurrences(input,',');
int input_length = check_length(inputs,num_inputs);
if(input_length == -1)
{
error();
}
normalize(inputs,num_inputs);
char *result;
char *command_name;
if(last_occurrence(argv[0],'/') == -1)
{
command_name = argv[0];
}
else
{
command_name = substring(argv[0],last_occurrence(argv[0],'/')+1,strlen(argv[0]));
}
if(!strcmp(command_name,"or"))
{
result = or(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"nor"))
{
result = nor(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"xor"))
{
result = xor(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"xnor"))
{
result = xnor(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"and"))
{
result = and(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"nand"))
{
result = nand(inputs,num_inputs,input_length);
}
else if(!strcmp(command_name,"not"))
{
result = not(inputs,num_inputs,input_length);
}
else
{
error();
}
free_mem(inputs,num_inputs);
printf("%s",result);
free(result);
return 0;
}