From a01b56ed39f6cd16064edbd4f521fb391ee42895 Mon Sep 17 00:00:00 2001
From: apio <blobs.trading@gmail.com>
Date: Fri, 6 Jan 2023 16:20:35 +0100
Subject: [PATCH] CString: Support strcpy(), strcat() and strchr()

---
 luna/include/luna/CString.h |  5 +++++
 luna/src/CString.cpp        | 24 ++++++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/luna/include/luna/CString.h b/luna/include/luna/CString.h
index df46497c..b4ac3029 100644
--- a/luna/include/luna/CString.h
+++ b/luna/include/luna/CString.h
@@ -16,4 +16,9 @@ extern "C"
 
     // Copies len bytes from src into dest and adds a null terminator.
     void nullcpy(char* dest, const char* src, usize len);
+
+    [[deprecated]] char* strcpy(char* dst, const char* src);
+    [[deprecated]] char* strcat(char* dst, const char* src);
+
+    char* strchr(const char* str, int c);
 }
diff --git a/luna/src/CString.cpp b/luna/src/CString.cpp
index ac048c3c..06f129f6 100644
--- a/luna/src/CString.cpp
+++ b/luna/src/CString.cpp
@@ -81,4 +81,28 @@ extern "C"
         memcpy(dest, src, len);
         dest[len] = 0;
     }
+
+    char* strcpy(char* dest, const char* src)
+    {
+        char* s = dest;
+        for (; *src; dest++, src++) *dest = *src;
+        *dest = 0;
+        return s;
+    }
+
+    char* strcat(char* dest, const char* src)
+    {
+        char* s = dest;
+        while (*dest) dest++;
+        for (; *src; dest++, src++) *dest = *src;
+        *dest = 0;
+        return s;
+    }
+
+    char* strchr(const char* str, int c)
+    {
+        while (*str && *str != c) str++;
+        if (*str) return const_cast<char*>(str);
+        return NULL;
+    }
 }