input buffer and key repeat

1 files changed, 34 insertions, 0 deletions

diff --git a/array.h b/array.h
new file mode 100644
index 0000000..c2d908a
--- /dev/null
+++ b/array.h
@@ -0,0 +1,34 @@
+#ifndef ARRAY_H_
+#define ARRAY_H_
+#include <stdlib.h>
+
+typedef struct {
+    size_t size;
+    size_t capacity;
+    char array[];
+} array_info;
+
+array_info* array_new_(size_t item_size, size_t capacity);
+void array_print(void* array);
+void array_pop(void* array);
+void* array_add_(void* array, size_t item_size);
+
+
+#define array_clear(array) (((array_info*)(array))[-1].size = 0)
+#define array_size(array) (((array_info*)(array))[-1].size)
+#define array_new(type, capacity) ((type*)(array_new_(sizeof(type), capacity)->array))
+
+#define array_free(array) do {          \
+    free(((array_info*)(array)) - 1);   \
+    (array) = NULL;                     \
+} while (0)
+
+#define array_add(array, value) do {                        \
+    void* __temp = array_add_((array), sizeof(*(array)));   \
+    (array) = __temp;                                       \
+    (array)[array_size((array)) - 1] = value;               \
+} while (0)
+
+#define array_last(array) (array_size(array) ? (array)[array_size(array) - 1] : NULL);
+
+#endif // ARRAY_H_