move from private r&d repo

utils.c

@@ -0,0 +1,30 @@
+#include "utils.h"
+#include <string.h>
+
+size_t curl_read_callback_file(void *ptr, size_t size, size_t nmemb,
+                            void *userdata) {
+  struct curl_file_data *data = (struct curl_file_data *)userdata;
+  size_t bytes_to_read = size * nmemb;
+  return fread(ptr, 1, bytes_to_read, data->file);
+}
+
+size_t curl_write_callback_response(void *contents, size_t size, size_t nmemb,
+                             void *userp) {
+  size_t total_size = size * nmemb;
+  struct curl_response_data *response = (struct curl_response_data *)userp;
+
+  // Reallocate buffer to fit new data
+  response->data = realloc(response->data, response->size + total_size + 1);
+  if (response->data == NULL) {
+    return 0; // Error
+  }
+
+  // Copy new data to buffer
+  memcpy(&response->data[response->size], contents, total_size);
+  response->size += total_size;
+  response->data[response->size] = '\0'; // Null terminate
+
+  printf("read an extra %d bytes of data\n", (int)total_size);
+
+  return total_size;
+}