quickjs-tart

commit 2aa58df6d85a468fffa07e1a45eac3b2912774dd
parent 39ab09c04be56a71e0603dfef97d79d106369348
Author: Florian Dold <florian@dold.me>
Date:   Thu, 10 Nov 2022 14:31:14 +0100

helpers needed for Taler wallet

Diffstat:
M
Makefile
 | 
2
+-
A
prelude.js
 | 
23
+++++++++++++++++++++++
M
quickjs-libc.c
 | 
29
+++++++++++++++++++++++++++++
A
wallet-setup.js
 | 
3
+++

4 files changed, 56 insertions(+), 1 deletion(-)
diff --git a/Makefile b/Makefile
@@ -28,7 +28,7 @@ endif
 # Windows cross compilation from Linux
 #CONFIG_WIN32=y
 # use link time optimization (smaller and faster executables but slower build)
-CONFIG_LTO=y
+#CONFIG_LTO=y
 # consider warnings as errors (for development)
 #CONFIG_WERROR=y
 # force 32 bit build for some utilities
diff --git a/prelude.js b/prelude.js
@@ -0,0 +1,23 @@
+import * as os from "os";
+
+class TextEncoder {
+  encode(str) {
+    return new Uint8Array(_encodeUtf8(str));
+  }
+}
+
+class TextDecoder {
+  decode(bytes) {
+    return _decodeUtf8(bytes.buffer);
+  }
+}
+
+globalThis.TextEncoder = TextEncoder;
+globalThis.TextDecoder = TextDecoder;
+globalThis.setTimeout = (f, t) => os.setTimeout(f, t);
+globalThis.setImmediate = (f) => os.setTimeout(f, 0);
+
+// FIXME: log to the right streams!
+console.info = (...args) => { console.log(...args); };
+console.warn = (...args) => { console.log(...args); };
+console.error = (...args) => { console.log(...args); };
diff --git a/quickjs-libc.c b/quickjs-libc.c
@@ -3734,6 +3734,30 @@ static JSValue js_print(JSContext *ctx, JSValueConst this_val,
     return JS_UNDEFINED;
 }
 
+static JSValue js_encode_utf8(JSContext *ctx, JSValueConst this_val,
+                              int argc, JSValueConst *argv)
+{
+    const char *str;
+    JSValue buf;
+    str = JS_ToCString(ctx, argv[0]);
+    // FIXME: Don't copy buffer but pass destructor function
+    buf = JS_NewArrayBufferCopy(ctx, (const uint8_t*) str, strlen(str));
+    JS_FreeCString(ctx, str);
+    return buf;
+}
+
+static JSValue js_decode_utf8(JSContext *ctx, JSValueConst this_val,
+                              int argc, JSValueConst *argv)
+{
+    size_t psize;
+    uint8_t *utf8_buf;
+    utf8_buf = JS_GetArrayBuffer(ctx, &psize, argv[0]);
+    if (NULL == utf8_buf) {
+        return JS_EXCEPTION;
+    }
+    return JS_NewStringLen(ctx, (char *) utf8_buf, psize);
+}
+
 void js_std_add_helpers(JSContext *ctx, int argc, char **argv)
 {
     JSValue global_obj, console, args;
@@ -3747,6 +3771,11 @@ void js_std_add_helpers(JSContext *ctx, int argc, char **argv)
                       JS_NewCFunction(ctx, js_print, "log", 1));
     JS_SetPropertyStr(ctx, global_obj, "console", console);
 
+    JS_SetPropertyStr(ctx, global_obj, "_encodeUtf8",
+                      JS_NewCFunction(ctx, js_encode_utf8, "_encodeUtf8", 1));
+    JS_SetPropertyStr(ctx, global_obj, "_decodeUtf8",
+                      JS_NewCFunction(ctx, js_decode_utf8, "_decodeUtf8", 1));
+
     /* same methods as the mozilla JS shell */
     if (argc >= 0) {
         args = JS_NewArray(ctx);
diff --git a/wallet-setup.js b/wallet-setup.js
@@ -0,0 +1,3 @@
+globalThis.__native_sendMessage = (x) => console.log(x);
+installNativeWalletListener()
+__native_onMessage(JSON.stringify({operation: "init", args: {}}))