refactor: Change to Rust's CStr

Cargo.toml

@@ -21,8 +21,3 @@ path = "examples/dark.rs"
 [profile.release]
 opt-level = "z"
 lto = "thin"
-
-[dependencies]
-cstr_core = { version = "0.2.6", default-features = false, features = ["nightly"] }
-
-[build-dependencies]

examples/con.rs

@@ -1,19 +1,15 @@
 #![no_std]
 #![no_main]
 
-use cstr_core::cstr;
 use kos::{dll::Console, threads::exit};
 
 extern crate alloc;
 
 #[no_mangle]
 pub fn kol_main() {
-    let header = cstr!("Rust!");
-    let string = "Hi from Rust!";
-
     let con_lib = Console::import(None).unwrap();
-    con_lib.init(u32::MAX, u32::MAX, u32::MAX, u32::MAX, header);
-    con_lib.write_string(string);
+    con_lib.init(u32::MAX, u32::MAX, u32::MAX, u32::MAX, c"Rust!");
+    con_lib.write_string("Hi from Rust!");
     con_lib.exit(false);
 
     exit();

examples/dark.rs

@@ -1,8 +1,6 @@
 #![no_std]
 #![no_main]
 
-use cstr_core::{cstr, CStr};
-
 use kos::{
     graphics::{display_message, Color, Dot, Size},
     input::fetch_key,
@@ -13,14 +11,14 @@ use kos::{
     },
 };
 
-const HEADER: &CStr = cstr!("Dark Mode Demo");
-const TEXT: [&CStr; 6] = [
-    cstr!("Lorem ipsum dolor sit amet,"),
-    cstr!("semper et rutrum placerat,"),
-    cstr!("Integer sed diam commodo quam varius"),
-    cstr!("Sed finibus urna sit amet felis"),
-    cstr!("vestibulum elementum. Maecenas at feugiat lacus"),
-    cstr!("tristique et sit amet tortor."),
+const HEADER: &'static CStr = c"Dark Mode Demo";
+const TEXT: [&'static CStr; 6] = [
+    c"Lorem ipsum dolor sit amet,",
+    c"semper et rutrum placerat,",
+    c"Integer sed diam commodo quam varius",
+    c"Sed finibus urna sit amet felis",
+    c"vestibulum elementum. Maecenas at feugiat lacus",
+    c"tristique et sit amet tortor.",
 ];
 const BTN: u32 = 42;
 const WINDOW_SIZE: Size = Size {
@@ -66,9 +64,9 @@ fn draw_window(invert: bool) {
         Dot { x: 20, y: 310 },
         Color::rgb(255, 255, 255),
         if invert {
-            cstr!("Light mode")
+            c"Light mode"
         } else {
-            cstr!("Dark mode")
+            c"Dark mode"
         },
         None,
     );

examples/hwa.rs

@@ -1,8 +1,8 @@
 #![no_std]
 #![no_main]
 
-use cstr_core::{cstr, CStr};
-
+use alloc::ffi::CString;
+use core::ffi::CStr;
 use kos::{
     graphics::{display_message, Color, Dot, Size},
     input::fetch_key,
@@ -14,8 +14,8 @@ use kos::{
     },
 };
 
-const HEADER: &CStr = cstr!("Hey Kolibri");
-const MSG: &CStr = cstr!("Hello from Rust!");
+const HEADER: &CStr = c"Hey Kolibri";
+const MSG: &CStr = c"Hello from Rust!";
 const BTN: u32 = 42;
 
 #[macro_use]
@@ -45,16 +45,18 @@ fn draw_window(c: usize) {
     );
 
     let btn_str = match get_lang() {
-        Lang::German => format!("Taste gedrückt: {} mal\0", c),
-        Lang::Russian => format!("Кнопка нажата: {} раз\0", c),
-        Lang::French => format!("Button enfoncé : {} fois\0", c),
-        _ => format!("Button pressed: {} times\0", c),
+        Lang::German => format!("Taste gedrückt: {} mal", c),
+        Lang::Russian => format!("Кнопка нажата: {} раз", c),
+        Lang::French => format!("Button enfoncé : {} fois", c),
+        _ => format!("Button pressed: {} times", c),
     };
 
     display_message(
         Dot { x: 10, y: 30 },
         Color::rgb(0, 0, 0),
-        CStr::from_bytes_with_nul(btn_str.as_bytes()).unwrap_or(cstr!("String error")),
+        CString::new(btn_str.as_bytes())
+            .expect("CString error")
+            .as_c_str(),
         None,
     );
 

src/dll.rs

@@ -1,5 +1,5 @@
 use crate::sys;
-use cstr_core::CStr;
+use core::ffi::CStr;
 
 mod console;
 pub use console::Console;

src/dll/console.rs

@@ -1,7 +1,6 @@
 use crate::dll::DLL;
+use core::ffi::CStr;
 use core::mem::transmute;
-use cstr_core::cstr;
-use cstr_core::CStr;
 
 pub struct Console {
     con_init: extern "stdcall" fn(u32, u32, u32, u32, *const u8),
@@ -11,16 +10,14 @@ pub struct Console {
 
 impl Console {
     pub fn import(path: Option<&CStr>) -> Result<Self, &str> {
-        let lib = DLL::load_dll(path.unwrap_or(cstr!("/sys/lib/console.obj")));
+        let lib = DLL::load_dll(path.unwrap_or(c"/sys/lib/console.obj"));
         match lib {
             Err(e) => return Err(e),
             Ok(dll) => unsafe {
                 Ok(Console {
-                    con_init: transmute(dll.get_func(cstr!("con_init")).ok().unwrap()),
-                    con_write_string: transmute(
-                        dll.get_func(cstr!("con_write_string")).ok().unwrap(),
-                    ),
-                    con_exit: transmute(dll.get_func(cstr!("con_exit")).ok().unwrap()),
+                    con_init: transmute(dll.get_func(c"con_init").ok().unwrap()),
+                    con_write_string: transmute(dll.get_func(c"con_write_string").ok().unwrap()),
+                    con_exit: transmute(dll.get_func(c"con_exit").ok().unwrap()),
                 })
             },
         }

src/modules/graphics.rs

@@ -1,5 +1,5 @@
 use crate::sys;
-use cstr_core::CStr;
+use core::ffi::CStr;
 
 #[derive(Clone, Copy)]
 pub struct Color(u8, u8, u8);

src/modules/system.rs

@@ -1,7 +1,7 @@
 use crate::sys;
 use crate::throw_new;
 use alloc::string::String;
-use cstr_core::CStr;
+use core::ffi::CStr;
 
 trait Debuggable {
     fn data_iter(self) -> impl Iterator<Item = u8>;

src/modules/windows.rs

@@ -2,7 +2,8 @@ use crate::graphics::{Color, Dot, Size};
 use crate::sys;
 use crate::system::debug_write;
 use crate::throw_new;
-use cstr_core::{cstr, CStr};
+use alloc::ffi::CString;
+use core::ffi::CStr;
 
 #[repr(u32)]
 pub enum WindowKind {
@@ -16,12 +17,12 @@ pub enum WindowKind {
 pub struct WindowParams<'a> {
     pub color: Color,
     pub kind: WindowKind,
-    pub title: Option<&'a cstr_core::CStr>,
+    pub title: Option<&'a CStr>,
 }
 
 pub const CLOSE_BUTTON: u32 = 1;
 
-pub fn define_window(start: Dot, size: Size, params: WindowParams<'_>) {
+pub fn define_window(start: Dot, size: Size, params: WindowParams) {
     const RELATIVE_FLAG: u32 = 0x20;
 
     unsafe {
@@ -60,14 +61,12 @@ pub fn define_button(
         crate::graphics::display_message(
             Dot { x: 10, y: 200 },
             Color::rgb(255, 0, 0),
-            CStr::from_bytes_with_nul(
-                format!(
-                    "x:{:?} y:{:?} w:{:?} h:{:?}\n\0",
-                    start.x, start.y, size.width, size.height
-                )
-                .as_bytes(),
-            )
-            .unwrap_or(cstr!("String error")),
+            CString::new(format!(
+                "x:{:?} y:{:?} w:{:?} h:{:?}\n",
+                start.x, start.y, size.width, size.height
+            ))
+            .expect("CString error")
+            .as_c_str(),
             None,
         );
         throw_new!(format!(