From 7e6b8c93b4904d9cab50319ac3434b7d8b4107ba Mon Sep 17 00:00:00 2001
From: Bananymous <oskari.alaranta@bananymous.com>
Date: Thu, 2 Apr 2026 15:40:23 +0300
Subject: [PATCH] LibC: Implement strsep

---
 userspace/libraries/LibC/include/string.h |  1 +
 userspace/libraries/LibC/string.cpp       | 19 +++++++++++++++++++
 2 files changed, 20 insertions(+)

diff --git a/userspace/libraries/LibC/include/string.h b/userspace/libraries/LibC/include/string.h
index 3a6575f1..75bef719 100644
--- a/userspace/libraries/LibC/include/string.h
+++ b/userspace/libraries/LibC/include/string.h
@@ -42,6 +42,7 @@ char*	strndup(const char* s, size_t n);
 size_t	strnlen(const char* s, size_t maxlen);
 char*	strpbrk(const char* s1, const char* s2);
 char*	strrchr(const char* s, int c);
+char*	strsep(char** __restrict stringp, const char* __restrict delim);
 char*	strsignal(int signum);
 size_t	strspn(const char* s1, const char* s2);
 char*	strstr(const char* s1, const char* s2);
diff --git a/userspace/libraries/LibC/string.cpp b/userspace/libraries/LibC/string.cpp
index 96d0acd8..3479d946 100644
--- a/userspace/libraries/LibC/string.cpp
+++ b/userspace/libraries/LibC/string.cpp
@@ -274,6 +274,25 @@ char* strrchr(const char* str, int c)
 	return (*str == c) ? (char*)str : nullptr;
 }
 
+char* strsep(char** __restrict stringp, const char* __restrict delim)
+{
+	if (*stringp == nullptr)
+		return nullptr;
+
+	char* original = *stringp;
+
+	char* match = strpbrk(*stringp, delim);
+	if (match == nullptr)
+		*stringp = nullptr;
+	else
+	{
+		*stringp = match + 1;
+		*match = '\0';
+	}
+
+	return original;
+}
+
 char* strstr(const char* haystack, const char* needle)
 {
 	const size_t needle_len = strlen(needle);