an xcb window

hic/Cargo.toml

@@ -6,6 +6,11 @@ version = "0.1.0"
 edition = "2024"
 build = "build.rs"
 
+[[bin]]
+rustc-link-lib = ["xcb", "cairo"]
+name = "hic"
+path = "src/main.rs"
+
 [dependencies]
 libc = "0.2.169"
 same-proto = { path = "../same-proto" }

hic/build.ninja

@@ -1,6 +1,6 @@
 cxx = clang++
-cxxflags = -g -Wall -Wextra -Wno-c99-extensions -pedantic -fblocks -O3 -Iinc
-libs =  -lxcb -I/usr/include/cairo -I/usr/include/libpng16 -I/usr/include/freetype2 -DWITH_GZFILEOP -I/usr/include/pixman-1 -lcairo
+cxxflags = -g -Wall -Wextra -Wno-c99-extensions -pedantic -fblocks -O3 -Iinc -fPIC
+libs =  -I/usr/include/cairo -I/usr/include/libpng16 -I/usr/include/freetype2 -DWITH_GZFILEOP -I/usr/include/pixman-1
 rule cpp
           depfile = $out.d
           command = $cxx -c -MD -MF $out.d $cxxflags $libs -o $out $in
@@ -22,6 +22,7 @@ rule exe
          command = $in
 build clean: rm o
 build o: mkdir
+build o/str.cpp.o: cpp lib/str.cpp
 build o/gui.cpp.o: cpp lib/gui.cpp
-build o/libhic.a: lib o/gui.cpp.o
+build o/libhic.a: lib o/str.cpp.o o/gui.cpp.o
 default o/libhic.a

hic/build.rs

@@ -1,6 +1,9 @@
-use std::env;
+use std::{process::Command, env};
 
 fn main() {
+    Command::new("ninja").spawn().expect("ninja failed");
+
     let cwd = env::current_dir().unwrap();
-    println!(r"cargo:rustc-link-search={}/o/", cwd.display());
+    println!("cargo:rustc-link-search={}/o/", cwd.display());
+    ["cairo", "xcb"].iter().for_each(|x| println!("cargo:rustc-link-arg=-l{x}"));
 }

hic/etc/ninja.goal

@@ -1,17 +1,24 @@
 #!/usr/bin/env goal
 
+/ join by newlines
 nl:{x+"\n"+y}
+/ join by spaces
 sp:{x+" "+y}
 
-fs:{f:read x;f["name"]@&~f"dir"}
+/ all files in dir x
+fs:{f:read x
+    f["name"]@&~f"dir"}
 lib:fs "lib"
 
-cpp:{x@&{"cpp"~+/|3#|("c"$)'"c"$x}'x}
+/ get all items of x where ".cpp"~|4#|x
+/ now you can cpp@fs x
+cpp:{x@&{".cpp"~+/|4#|("c"$)'"c"$x}'x}
 
+/ generate the ninja file
 say'("cxx = clang++"
      "cxxflags = "+sp/("-g -Wall -Wextra -Wno-c99-extensions"
-                       "-pedantic -fblocks -O3 -Iinc")
-     "libs = "+sp/{-1_shell "pkg-config --cflags --libs $x"}'"xcb" "cairo"
+                       "-pedantic -fblocks -O3 -Iinc -fPIC")
+     "libs = "+sp/{-1_shell "pkg-config --cflags $x"}'"xcb" "cairo"
      rq/rule cpp
           depfile = $out.d
           command = $cxx -c -MD -MF $out.d $cxxflags $libs -o $out $in

hic/lib/com.h

@@ -1,5 +1,15 @@
 #define eprintf(...) fprintf(stderr, __VA_ARGS__)
 
+#define eprintln(...) { \
+	fprintf(stderr, __VA_ARGS__); \
+	putc('\n', stderr); \
+}
+
+#define fatal(...) { \
+	eprintln(__VA_ARGS__); \
+	exit(-1); \
+}
+
 template<typename T, typename E>
 struct result {
 	union {

hic/lib/gui.cpp

@@ -1,25 +1,55 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <ctype.h>
+#include <stdint.h>
+#include <unistd.h>
+
 #include <cairo.h>
 #include <cairo-xcb.h>
 #include <xcb/xcb.h>
-#include <stdio.h>
 
 #include "com.h"
+#include "str.h"
 #include "gui.h"
 
-/*
-auto win_t::mk() -> result_t<win_t, std::string> {
-	win.dpy = XCBConnectBasic();
-	if (win.dpy == NULL) {
-	}
-}
+xcb_connection_t *con;
+xcb_screen_t *scr;
+xcb_window_t win;
 
-win_t win;
+extern "C" auto hic_init() -> int {
+	/* 
+	 * set up the connection and grab a window id
+	 */
+	con = xcb_connect(NULL, NULL);
+	if (con == NULL) return -1;
 
-extern "C" auto init(int x, int y) -> int {
-	// win.dpy = XCBConnectBasic();
-	if (win.dpy == NULL) {
-		err("failed to open display");
-		return 1;
-	}
+	scr = xcb_setup_roots_iterator(xcb_get_setup(con)).data;
+	if (scr == NULL) return -2;
+
+	win = xcb_generate_id(con);
+
+	/* summon a window */
+	xcb_create_window(
+		con,
+		XCB_COPY_FROM_PARENT, /* depth (same as root) */
+		win,
+		scr->root, /* parent window */
+		0, 0, /* x y */
+		640, 480, /* width height */
+		5, /* border width */
+		XCB_WINDOW_CLASS_INPUT_OUTPUT, /* the window class */
+		scr->root_visual,
+		0, NULL /* masks (unused) */
+	);
+
+	/* map the window onto the screen */
+	xcb_map_window(con, win);
+
+	/* make sure commands are sent before we pause, so window is shown */
+	xcb_flush(con);
+
+	/* now we wait */
+	pause();
+
+	return 0;
 }
-*/

hic/lib/gui.h

@@ -1,15 +0,0 @@
-/*
-struct win_t {
-    XCBConnection *dpy;
-
-    XCBWINDOW win;
-    XCBGCONTEXT gc;
-
-    int width, height;
-
-    XCBVISUALTYPE *visual;
-
-    static result_t<win_t, str_t> mk();
-    ~win_t();
-};
-*/

hic/lib/str.cpp

@@ -0,0 +1,34 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdint.h>
+
+#include "com.h"
+#include "str.h"
+
+str_t::~str_t() {
+	free(buf);
+}
+
+#define CLONE(x) { \
+	i = x.i, len = x.len; \
+	auto size = sizeof(str_t::C) * len; \
+	\
+	buf = (str_t::C*)malloc(size); \
+	if (buf == NULL) fatal( \
+		"malloc() returned NULL in str_t clone. aborting." \
+	); \
+	\
+	memcpy(buf, x.buf, size); \
+}
+
+
+auto str_t::operator=(const str_t& x) -> str_t& {
+	CLONE(x);
+	return *this;
+}
+
+str_t::str_t(const str_t& x) {
+	CLONE(x)
+}

hic/lib/str.h

@@ -0,0 +1,25 @@
+struct str_t {
+	/* the char type
+	 * declared because i might change it later and i don't want to rewrite
+	 * all the types */
+	using C = uint8_t;
+
+	C *buf;
+	size_t i;
+	size_t len;
+
+	static auto mk() -> option<str_t> {
+		size_t i = 0, len = 8;
+		auto buf = (C*)malloc(sizeof(C) * len);
+		return buf == NULL
+			? option<str_t>()
+			: option<str_t>(str_t(buf, i, len));
+	}
+
+	str_t(C *buf, size_t i, size_t len) : buf{buf}, i{i}, len{len} {}
+
+	~str_t();
+
+	str_t& operator=(const str_t& x);
+	str_t(const str_t& x);
+};

hic/src/main.rs

@@ -2,10 +2,12 @@ use libc::c_int;
 
 #[link(name="hic")]
 unsafe extern "C" {
-    fn add(x: c_int, y: c_int) -> c_int;
+    fn hic_init() -> c_int;
 }
 
 
 fn main() {
-    println!("{}", unsafe { add(1, 10) });
+    unsafe {
+        hic_init();
+    }
 }