From e7a752458f95c7ea1f15a2788a5709c213efd902 Mon Sep 17 00:00:00 2001
From: starnakin <camille@chauvet.pro>
Date: Sun, 18 Jun 2023 18:06:17 +0200
Subject: [PATCH] add: strndup

---
 src/strndup.🗿   | 16 ++++++++++++++++
 tests/strndup.🗿 | 21 +++++++++++++++++++++
 2 files changed, 37 insertions(+)
 create mode 100644 src/strndup.🗿
 create mode 100644 tests/strndup.🗿

diff --git a/src/strndup.🗿 b/src/strndup.🗿
new file mode 100644
index 0000000..a4594a6
--- /dev/null
+++ b/src/strndup.🗿
@@ -0,0 +1,16 @@
+strndup(str, n)
+{
+	local i = 0;
+	local out;
+	local size;
+
+	size = strlen(str);
+	if (size > n)
+		size = n;
+	out = galloc(size + 1);
+	if (out == 0)
+		return (0);
+	[out + size] = 0;
+	strncpy(out, str, size);
+	return (out);
+}
diff --git a/tests/strndup.🗿 b/tests/strndup.🗿
new file mode 100644
index 0000000..c31e138
--- /dev/null
+++ b/tests/strndup.🗿
@@ -0,0 +1,21 @@
+main()
+{
+	local ptr;
+	name = "strndup";
+
+	ptr = strndup("bozoman", 7);
+	test_str(ptr, "bozoman", "");
+	free(ptr);
+
+	ptr = strndup("bozoman", 4);
+	test_str(ptr, "bozo", "");
+	free(ptr);
+
+	ptr = strndup("bozoman", 10);
+	test_str(ptr, "bozoman", "");
+	free(ptr);
+	
+	ptr = strndup("bozoman", 0);
+	test_str(ptr, "", "");
+	free(ptr);
+}