Bufferized printf

build/wasmPlugin.ts

@@ -26,20 +26,25 @@ const wasmPlugin = ({ production, portable }: WasmLoaderConfig = {}): BunPlugin
 
                             return decoder.decode(memory.buffer.slice(start, end));
                         };
+                        let buf = '';
                         const { instance } = await WebAssembly.instantiateStreaming(fetch(url), {
                             env: {
                                 memory,
                                 log(format, argsPtr) {
                                     format = getString(format);
-                                    let buf = '';
                                     let isFormat = false;
                                     let w = 4;
                                     const align = (a) => argsPtr += (argsPtr % a);
                                     for (const c of format) {
-                                        if (!isFormat && c !== '%') {
-                                            buf += c;
-                                        } else if (!isFormat && c === '%') {
-                                            isFormat = true;
+                                        if (!isFormat) {
+                                            if (c === '%') {
+                                                isFormat = true;
+                                            } else if (c === '\\n') {
+                                                console.log('[wasm]', buf);
+                                                buf = '';
+                                            } else {
+                                                buf += c;
+                                            }
                                         } else switch(c) {
                                             case '%': buf += '%'; isFormat = false; break;
                                             case 's': align(4); buf += getString(data.getInt32(argsPtr, true)); argsPtr += 4; isFormat = false; break;
@@ -53,8 +58,6 @@ const wasmPlugin = ({ production, portable }: WasmLoaderConfig = {}): BunPlugin
                                             default: buf += '%' + c; isFormat = false; break;
                                         }
                                     }
-                                     
-                                    console.log('[wasm]', buf);
                                 },
                                 grow(blocks) {
                                     if (blocks > 0) {

src/games/playground/awoo.cpp

@@ -1,5 +1,5 @@
 #include <stdlib.h>
 
 EXPORT(cpptest) void cpptest() {
-    printf("Awoo! %t%%");
+    printf("Awoo! %t%%\n");
 }

src/games/playground/index.tsx

@@ -2,5 +2,5 @@ import awoo from "./awoo.cpp";
 
 export default function main() {
     awoo.cpptest();
-    console.log(awoo.memory.grow);
+    console.log(awoo);
 }