add support for load from url

Cargo.lock

@@ -1543,6 +1543,7 @@ dependencies = [
  "pico-args",
  "uw8-tool",
  "wasmtime",
+ "wat",
 ]
 
 [[package]]

Cargo.toml

@@ -12,4 +12,5 @@ minifb = "0.19"
 notify = "4"
 pico-args = "0.4"
 curlywas = { git = "https://github.com/exoticorn/curlywas.git", rev = "196719b" }
+wat = "1"
 uw8-tool = { path = "uw8-tool" }

examples/wat/xorscroll.wat

@@ -0,0 +1,26 @@
+(module
+  (import "env" "memory" (memory 4))
+  (func (export "upd")
+    (local $i i32) ;; local variables are zero initialized
+
+    (loop $pixels
+      local.get $i ;; pixel index to write to
+
+      (i32.rem_u (local.get $i) (i32.const 320)) ;; x
+      (i32.div_u (i32.load (i32.const 64)) (i32.const 10)) ;; time / 10
+      i32.add
+
+      (i32.div_u (local.get $i) (i32.const 320)) ;; y
+
+      i32.xor ;; (x + time / 10) ^ y
+      (i32.shr_u (i32.const 3)) ;; .. >> 3
+      (i32.and (i32.const 127)) ;; .. & 127
+
+      i32.store8 offset=120 ;; store at pixel index + 120
+
+      (i32.add (local.get $i) (i32.const 1)) ;; i + 1
+      local.tee $i ;; write it back but keep it on the stack
+      (br_if $pixels (i32.lt_s (i32.const 76800))) ;; branch to start of loop if i < 320*240
+    )
+  )
+)

site/static/uw8/skipahead.uw8

@@ -0,0 +1,3 @@
+#<23><>I<EFBFBD>ޮaV<>p<EFBFBD>v[VLc<4C><63><1C><>^<>ȯ<>C<EFBFBD><43>M[<5B><>5<EFBFBD><35>$<24>S<EFBFBD>.}<15><>a'<27>c<EFBFBD><63><EFBFBD>b<EFBFBD><62>V-=X<><58><EFBFBD>Lguu8<75><06><><EFBFBD>
+9<EFBFBD>\<5C><>ݯ<EFBFBD>h<EFBFBD><<3C>4?zk<7A><6B>.<2E><02><>8<10><>&/<2F>@<40>6ֿ<36><D6BF>;8<>{
.<2E>8_<38><5F>^<5E><><EFBFBD>t/kp|<7C><>n<0F><>,'<27>>1<>0^4=@<0C><>{NI
+<EFBFBD>b<EFBFBD>_=<3D>U`Y<><59><EFBFBD>=<3D>\<5C><>O٦<4F><D9A6><EFBFBD>bxh&<26><>g<>tO<74><4F>;	<09>#<23>@H<><48><EFBFBD><EFBFBD><EFBFBD><EFBFBD>z<EFBFBD>Ζ<EFBFBD><CE96><EFBFBD>+<2B>Xw<58><11><>

src/main.rs

@@ -97,7 +97,11 @@ fn load_cart(filename: &Path, uw8: &mut MicroW8, config: &Config) -> Result<()>
 
     if cart[0] >= 10 {
         let src = String::from_utf8(cart)?;
-        cart = curlywas::compile_str(&src, filename, curlywas::Options::default())?;
+        cart = if src.chars().find(|c| !c.is_whitespace()) == Some('(') {
+            wat::parse_str(src)?
+        } else {
+            curlywas::compile_str(&src, filename, curlywas::Options::default())?
+        };
     }
 
     if config.pack {

web/src/main.js

@@ -50,8 +50,7 @@ let keyHandler = (e) => {
             mask = 128;
             break;
         case 'KeyR':
-        if(isKeyDown)
+            if (isKeyDown) {
-        {
                 runModule(currentData);
             }
             break;
@@ -66,7 +65,7 @@ let keyHandler = (e) => {
 window.onkeydown = keyHandler;
 window.onkeyup = keyHandler;
 
-async function runModule(data) {
+async function runModule(data, keepUrl) {
     if (cancelFunction) {
         cancelFunction();
         cancelFunction = null;
@@ -82,16 +81,17 @@ async function runModule(data) {
     currentData = data;
 
     let newURL = window.location.pathname;
-    if (cartridgeSize <= 1024) {
+    if (cartridgeSize <= 1024 && !keepUrl) {
         let dataString = '';
         for (let byte of U8(data)) {
             dataString += String.fromCharCode(byte);
         }
         newURL += '#' + btoa(dataString);
-    }
+
         if (newURL != window.location.pathname + window.location.hash) {
             history.pushState(null, null, newURL);
         }
+    }
 
     screen.width = screen.width;
 
@@ -220,14 +220,18 @@ async function runModule(data) {
     }
 }
 
-async function runModuleFromURL(url) {
+async function runModuleFromURL(url, keepUrl) {
-    runModule(await (await fetch(url)).arrayBuffer());
+    runModule(await (await fetch(url)).arrayBuffer(), keepUrl);
 }
 
 function runModuleFromHash() {
-    let base64Data = window.location.hash.slice(1);
+    let hash = window.location.hash.slice(1);
-    if (base64Data.length > 0) {
+    if (hash.length > 0) {
-        runModuleFromURL('data:;base64,' + base64Data);
+        if (hash.startsWith("url=")) {
+            runModuleFromURL(hash.slice(4), true);
+        } else {
+            runModuleFromURL('data:;base64,' + hash);
+        }
     } else {
         runModule(new ArrayBuffer(0));
     }