Reformat and macro aliasing

driver.c

@@ -6,11 +6,13 @@
 #define rb_size_t size_t
 #include "ringbuf.h"
 
-int main(void) {
+int
+main(void)
+{
   struct RingBuf rb;
   rb_init(&rb, 10, malloc, sizeof(int));
 
-  int data[] = {1, 2, 3, 4, 5};
+  int data[] = { 1, 2, 3, 4, 5 };
   rb_push(&rb, (void **)data, 5, memcpy);
 
   // rb_destroy(&rb, free);

ringbuf.c

@@ -1,9 +1,17 @@
 /* SPDX-License-Identifier: MIT */
 
+#include <stdlib.h>
+#include <string.h>
+#include <stdio.h>
+
 #include "ringbuf.h"
 
-void rb_init(struct RingBuf *rb, rb_size_t capacity, void *(*alloc)(rb_size_t),
-             rb_size_t struct_size) {
+#define ALLOC_T  void *(*alloc)(rb_size_t)
+#define MEMCPY_T void *(*memcpy)(void *, const void *, rb_size_t)
+
+void
+rb_init(struct RingBuf *rb, rb_size_t capacity, ALLOC_T, rb_size_t struct_size)
+{
   rb->struct_size = struct_size;
   rb->capacity = capacity;
   rb->write_idx = 0;
@@ -11,21 +19,37 @@ void rb_init(struct RingBuf *rb, rb_size_t capacity, void *(*alloc)(rb_size_t),
   rb->buffer = alloc(capacity * struct_size); /* Calloc? */
 }
 
-void rb_destroy(struct RingBuf *rb, rb_size_t(free)(void *)) {
+void
+rb_destroy(struct RingBuf *rb, rb_size_t(free)(void *))
+{
   free(rb->buffer);
 }
 
-enum WriteResult rb_push(struct RingBuf *rb, void *data[], rb_size_t amount,
-                         void *(*memcpy)(void *, const void *, rb_size_t)) {
-  if (rb->write_idx + amount >= rb->capacity) {
+enum WriteResult
+rb_push(struct RingBuf *rb, void *data[], rb_size_t amount, MEMCPY_T)
+{
+  if(rb->write_idx + amount >= rb->capacity) {
     return CollisionError;
   }
 
-  for (rb_size_t i = 0; i < amount; i++) {
-    memcpy(rb->buffer + rb->write_idx * rb->struct_size, data[i],
-           rb->struct_size);
+  printf("write_idx: %d\n", rb->write_idx);
+  printf("amount: %d\n", amount);
+
+  for(rb_size_t i = 0; i < amount; i++) {
+    printf("memcpy: %d, write_idx: %d\n", i, rb->write_idx);
+    // write to the buffer
+    rb->buffer[rb->write_idx] = data[i];
+    // memcpy(rb->buffer + rb->write_idx * rb->struct_size, data[i], rb->struct_size);
+
     rb->write_idx = (rb->write_idx + 1) % rb->capacity;
   }
 
+  // Read it back to stdout
+  for(rb_size_t i = 0; i < amount; i++) {
+    printf("read_idx: %d\n", rb->read_idx);
+    printf("data: %d\n", *(int *)rb->buffer[rb->read_idx]);
+    rb->read_idx = (rb->read_idx + 1) % rb->capacity;
+  }
+
   return Ok;
 }

ringbuf.h

@@ -20,8 +20,7 @@ struct RingBuf {
 enum WriteResult { CollisionError, Ok };
 
 /** Initialize the ring buffer */
-void rb_init(struct RingBuf *rb, rb_size_t capacity, void *(*alloc)(rb_size_t),
-             rb_size_t struct_size);
+void rb_init(struct RingBuf *rb, rb_size_t capacity, void *(*alloc)(rb_size_t), rb_size_t struct_size);
 
 /** Insert data to the ring buffer */
 enum WriteResult rb_push(struct RingBuf *rb, void *data[], rb_size_t amount,