Separate out implementation to make looking at code files easier

1 files changed, 76 insertions, 0 deletions

diff --git a/vec.c b/vec.c
new file mode 100644
index 0000000..b897340
--- /dev/null
+++ b/vec.c
@@ -0,0 +1,76 @@
+/* Copyright (C) 2025 Aryadev Chavali
+
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the Unlicense for details.
+
+ * You may distribute and modify this code under the terms of the Unlicense,
+ * which you should have received a copy of along with this program.  If not,
+ * please go to <https://unlicense.org/>.
+
+ * Created: 2025-08-19
+ * Description: Vector implementation
+ */
+
+#include <malloc.h>
+#include <string.h>
+
+#include "./base.h"
+
+void vec_make(void **ptr, u64 size)
+{
+  if (!ptr)
+    return;
+  vec_t *vector    = calloc(1, sizeof(*vector) + size);
+  vector->size     = 0;
+  vector->capacity = size;
+  *ptr             = (vector + 1);
+}
+
+void vec_free(void **data)
+{
+  if (!data || !*data)
+    return;
+  free(VEC_GET(*data));
+  *data = NULL;
+}
+
+void vec_ensure_remaining(void **ptr, u64 space)
+{
+  if (!ptr || !*ptr)
+    return;
+  vec_t *vec = VEC_GET(*ptr);
+  if (vec->capacity - vec->size < space)
+  {
+    void *new_vec = NULL;
+    vec_make(&new_vec, MAX(vec->capacity * VEC_MULT, vec->size + space));
+    VEC_SIZE(new_vec) = vec->size;
+    memcpy(new_vec, *ptr, vec->size);
+    vec_free(ptr);
+    *ptr = new_vec;
+  }
+}
+
+void vec_append_byte(void **ptr, u8 byte)
+{
+  vec_ensure_remaining(ptr, 1);
+  vec_t *vec              = VEC_GET(*ptr);
+  vec->bytes[vec->size++] = byte;
+}
+
+void vec_append(void **ptr, void *data, u64 size)
+{
+  vec_ensure_remaining(ptr, size);
+  vec_t *vec = VEC_GET(*ptr);
+  memcpy(*ptr + vec->size, data, size);
+  vec->size += size;
+}
+
+void vec_clone(void **dest, void **src)
+{
+  if (!dest || !src || !*src)
+    return;
+  vec_make(dest, VEC_SIZE(*src));
+  memcpy(*dest, *src, VEC_SIZE(*src));
+  VEC_SIZE(*dest) = VEC_SIZE(*src);
+}