Merge pull request #425 from caseywescott/asciiToHex

asciiToHex implementation

Author: MartianGreed

packages/utils/src/_test_/utils/index.test.ts

@@ -7,6 +7,7 @@ import {
     getComponentNameFromEvent,
     getSelectorFromTag,
     splitEventTag,
+    asciiToHex,
 } from "../../utils/index";
 
 describe("utils", () => {
@@ -126,4 +127,14 @@ describe("utils", () => {
             "/dns4/api.cartridge.gg/tcp/443/x-parity-wss/%2Fx%2Fwordle-game%2Ftorii%2Fwss"
         );
     });
+
+    it("should convert ASCII strings to hex", () => {
+        const f = (input: string, expected: string) => {
+            expect(asciiToHex(input)).toBe(expected);
+        };
+
+        f("Hello", "0x48656c6c6f");
+        f("A", "0x41");
+        f("123", "0x313233");
+    });
 });

packages/utils/src/utils/index.ts

@@ -190,6 +190,18 @@ export function hexToAscii(hex: string): string {
     return str;
 }
 
+/**
+ * Converts an ASCII string to a hexadecimal string.
+ * With a 0x prefix, matching the original function's format
+ */
+export function asciiToHex(str: string): string {
+    let hex = "0x";
+    for (let i = 0; i < str.length; i++) {
+        hex += str.charCodeAt(i).toString(16).padStart(2, "0");
+    }
+    return hex;
+}
+
 /**
  * Get the component name from felt event name
  */