Bus.c

#include "Bus.h"

#include <memory.h>

typedef struct SubscriptionList {
    Subscription subscriptions[MAX_SUBSCRIBERS_PER_TOPIC];
} SubscriptionList;

typedef struct Topic {
    char* topicString;
    SubscriptionList subscriptions;
} Topic;

static Topic topics[MAX_TOPICS];

void Bus_Init(void) {
    memset(&topics, 0, sizeof(topics));
}

BusStatus Bus_Publish(const char* const topic, void* data, size_t size) {

}

BusStatus Bus_Subscribe(const char* const topic, Subscription subscription) {

}

Bus.h

#ifndef UNTITLED5_BUS_H
#define UNTITLED5_BUS_H

#include <stdlib.h>

#define MAX_TOPICS                5
#define MAX_SUBSCRIBERS_PER_TOPIC 5

typedef enum BusStatus {
    PUBLISHED,
    SUBSCRIBED,
    ERROR,
} BusStatus;

typedef int (*Subscription)(void* data, size_t size);

void      Bus_Init(void);
BusStatus Bus_Publish(const char* const topic, void* data, size_t size);
BusStatus Bus_Subscribe(const char* const topic, Subscription subscription);

#endif //UNTITLED5_BUS_H

gistfile1.txt

#include "Bus.h"

#include <memory.h>

typedef struct SubscriptionList {
    Subscription subscriptions[MAX_SUBSCRIBERS_PER_TOPIC];
} SubscriptionList;

typedef struct Topic {
    char* topicString;
    SubscriptionList subscriptions;
} Topic;

static Topic topics[MAX_TOPICS];

void Bus_Init(void) {
    memset(&topics, 0, sizeof(topics));
}

BusStatus Bus_Publish(const char* const topic, void* data, size_t size) {

}

BusStatus Bus_Subscribe(const char* const topic, Subscription subscription) {

}


#ifndef UNTITLED5_BUS_H
#define UNTITLED5_BUS_H

#include <stdlib.h>

#define MAX_TOPICS                5
#define MAX_SUBSCRIBERS_PER_TOPIC 5

typedef enum BusStatus {
    PUBLISHED,
    SUBSCRIBED,
    ERROR,
} BusStatus;

typedef int (*Subscription)(void* data, size_t size);

void      Bus_Init(void);
BusStatus Bus_Publish(const char* const topic, void* data, size_t size);
BusStatus Bus_Subscribe(const char* const topic, Subscription subscription);

#endif //UNTITLED5_BUS_H