From 85aeaebc7a50435db29c2ac5eacbb71377b6108c Mon Sep 17 00:00:00 2001
From: starnakin <camille@chauvet.pro>
Date: Mon, 24 Jul 2023 02:56:52 +0200
Subject: [PATCH] add: realloc and remove reallocarray

---
 src/realloc.🗿   | 29 +++++++++++++++++------------
 tests/realloc.🗿 | 24 ++++++++++++++++++++++++
 2 files changed, 41 insertions(+), 12 deletions(-)
 create mode 100644 tests/realloc.🗿

diff --git a/src/realloc.🗿 b/src/realloc.🗿
index 48ddac4..c48d574 100644
--- a/src/realloc.🗿
+++ b/src/realloc.🗿
@@ -1,21 +1,26 @@
-reallocarray(ptr, nmemb, size)
+realloc(ptr, new_size)
 {
-	local tmp;
-	local start;
+	local block_ptr;
+	local new_space;
+	local i;
 
-	start = ptr;
-	tmp = galloc(size);
-	if (tmp == NULL)
-		return NULL;
+	new_space = galloc(new_size);
+	if (new_space == NULL)
+	{
+		free(ptr);
+		return (NULL);
+	}
 	if (ptr == NULL)
-		return tmp;
+		return new_space;
+	block_ptr = ptr - LOCATION_DATA;
+	i = 0;
 	loop
 	{
-		if (start - ptr == nmemb)
+		if (i == new_size | i == [block_ptr + LOCATION_SIZE])
 			break;
-		[tmp + start - ptr] = [start];
-		start++;
+		[new_space + i] = [ptr + i];
+		i++;
 	}
 	free(ptr);
-	return tmp;
+	return new_space;
 }
diff --git a/tests/realloc.🗿 b/tests/realloc.🗿
new file mode 100644
index 0000000..b810f95
--- /dev/null
+++ b/tests/realloc.🗿
@@ -0,0 +1,24 @@
+main()
+{
+	local ptr1;
+	local ptr2;
+
+	name = "realloc";
+	
+	ptr1 = strdup("yo");
+	ptr2 = realloc(ptr1, 6);
+	test_str("yo", ptr2, "standart: value");
+	free(ptr2);
+	test_num(leaks(), 0, "standart: leaks");
+	
+	ptr2 = realloc(NULL, 6);
+	test_num(heap + LOCATION_DATA, ptr2, "NULL: value");
+	free(ptr2);
+	test_num(leaks(), 0, "NULL: leaks");
+
+	ptr1 = strdup("bonjour");
+	ptr2 = realloc(ptr1, 2);
+	test_tab_num(ptr2, "bo", 2, "decrement size: value");
+	free(ptr2);
+	test_num(leaks(), 0, "decrement size: leaks");
+}