refactor: Change to Rust's CStr

dark example

Cargo.toml

@@ -14,11 +14,10 @@ path = "examples/hwa.rs"
 name = "con"
 path = "examples/con.rs"
 
+[[example]]
+name = "dark"
+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.init(u32::MAX, u32::MAX, u32::MAX, u32::MAX, c"Rust!");
-    con_lib.write_string(string);
+    con_lib.write_string("Hi from Rust!");
     con_lib.exit(false);
 
     exit();

examples/dark.rs

@@ -0,0 +1,116 @@
+#![no_std]
+#![no_main]
+
+use kos::{
+    graphics::{display_message, Color, Dot, Size},
+    input::fetch_key,
+    threads::{exit, fetch_event, Event},
+    windows::{
+        define_button, define_window, end_window_draw, get_button_id, invert_pixel,
+        start_window_draw, WindowKind, WindowParams, CLOSE_BUTTON,
+    },
+};
+
+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 {
+    width: 400,
+    height: 400,
+};
+
+extern crate alloc;
+
+fn draw_window(invert: bool) {
+    start_window_draw();
+
+    define_window(
+        Dot { x: 50, y: 50 },
+        WINDOW_SIZE,
+        WindowParams {
+            color: Color::rgb(0xff, 0xff, 0xff),
+            kind: WindowKind::FixedThemed,
+            title: Some(HEADER),
+        },
+    );
+
+    display_message(Dot { x: 10, y: 10 }, Color::rgb(0, 0, 0), TEXT[0], None);
+    display_message(Dot { x: 10, y: 50 }, Color::rgb(0, 0, 0), TEXT[1], None);
+    display_message(Dot { x: 10, y: 90 }, Color::rgb(0, 0, 0), TEXT[2], None);
+    display_message(Dot { x: 10, y: 130 }, Color::rgb(0, 0, 0), TEXT[3], None);
+    display_message(Dot { x: 10, y: 170 }, Color::rgb(0, 0, 0), TEXT[4], None);
+    display_message(Dot { x: 10, y: 210 }, Color::rgb(0, 0, 0), TEXT[5], None);
+
+    define_button(
+        Dot { x: 10, y: 300 },
+        Size {
+            width: 100,
+            height: 30,
+        },
+        BTN,
+        true,
+        true,
+        Some(Color::rgb(147, 112, 219)),
+    );
+
+    display_message(
+        Dot { x: 20, y: 310 },
+        Color::rgb(255, 255, 255),
+        if invert {
+            c"Light mode"
+        } else {
+            c"Dark mode"
+        },
+        None,
+    );
+
+    if invert {
+        for x in 0..WINDOW_SIZE.width {
+            for y in 0..WINDOW_SIZE.height {
+                invert_pixel(Dot { x, y })
+            }
+        }
+    }
+
+    end_window_draw();
+
+    return;
+}
+
+fn button_handler(invert: &mut bool) {
+    let btn_id = get_button_id();
+
+    if btn_id.is_some() {
+        match btn_id.unwrap() {
+            CLOSE_BUTTON => exit(),
+            BTN => {
+                *invert = !*invert;
+                draw_window(*invert);
+            }
+            _ => {}
+        }
+    }
+}
+
+#[no_mangle]
+fn kol_main() {
+    let mut invert = false;
+
+    while let Some(ev) =
+        fetch_event((Event::Redraw as u32) | (Event::KeyPress as u32) | (Event::BtnPress as u32))
+    {
+        match ev {
+            Event::Redraw => draw_window(invert),
+            Event::KeyPress => drop(fetch_key()),
+            Event::BtnPress => button_handler(&mut invert),
+            _ => break,
+        }
+    }
+}

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 HEADER: &CStr = c"Hey Kolibri";
-const MSG: &CStr = cstr!("Hello from Rust!");
+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::German => format!("Taste gedrückt: {} mal", c),
-        Lang::Russian => format!("Кнопка нажата: {} раз\0", c),
+        Lang::Russian => format!("Кнопка нажата: {} раз", c),
-        Lang::French => format!("Button enfoncé : {} fois\0", c),
+        Lang::French => format!("Button enfoncé : {} fois", c),
-        _ => format!("Button pressed: {} times\0", 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_init: transmute(dll.get_func(c"con_init").ok().unwrap()),
-                    con_write_string: transmute(
+                    con_write_string: transmute(dll.get_func(c"con_write_string").ok().unwrap()),
-                        dll.get_func(cstr!("con_write_string")).ok().unwrap(),
+                    con_exit: transmute(dll.get_func(c"con_exit").ok().unwrap()),
-                    ),
-                    con_exit: transmute(dll.get_func(cstr!("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 {
@@ -39,6 +40,15 @@ pub fn define_window(start: Dot, size: Size, params: WindowParams<'_>) {
     }
 }
 
+pub fn put_pixel(pos: Dot, color: Option<Color>) {
+    let color: u32 = color.unwrap_or(Color::rgb(255, 255, 255)).as_rgb_val();
+    unsafe { sys::put_pixel(pos.x, pos.y, color) }
+}
+
+pub fn invert_pixel(pos: Dot) {
+    unsafe { sys::put_pixel(pos.x, pos.y, 1 << 24) }
+}
+
 pub fn define_button(
     start: Dot,
     size: Size,
@@ -51,14 +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(
+            CString::new(format!(
-                format!(
+                "x:{:?} y:{:?} w:{:?} h:{:?}\n",
-                    "x:{:?} y:{:?} w:{:?} h:{:?}\n\0",
+                start.x, start.y, size.width, size.height
-                    start.x, start.y, size.width, size.height
+            ))
-                )
+            .expect("CString error")
-                .as_bytes(),
+            .as_c_str(),
-            )
-            .unwrap_or(cstr!("String error")),
             None,
         );
         throw_new!(format!(

src/sys.rs

@@ -8,6 +8,10 @@ extern "C" {
     #[link_name = "_define_window"]
     pub fn define_window(ebx: u32, ecx: u32, edx: u32, esi: u32, edi: u32);
 
+    // 1
+    #[link_name = "_put_pixel"]
+    pub fn put_pixel(ebx: u32, ecx: u32, edx: u32);
+
     // 2
     #[link_name = "_pressed_key"]
     pub fn pressed_key() -> u32;

src/syscalls.S

@@ -7,6 +7,7 @@ section '.text'
     public _start_window_draw
     public _end_window_draw
     public _define_window
+    public _put_pixel
     public _display_message
     public _wait_event
     public _pressed_key
@@ -50,6 +51,14 @@ _define_window:
     pop edi
     ret
 
+_put_pixel:
+    mov eax, SF_PUT_PIXEL
+    mov ebx, dword [esp + 4 * 1]
+    mov ecx, dword [esp + 4 * 2]
+    mov edx, dword [esp + 4 * 3]
+    int 0x40
+    ret
+
 _display_message:
     push esi edi
     mov eax, SF_DRAW_TEXT