finish parser script

src/parse.js

@@ -0,0 +1,40 @@
+var baseUrl = "https://0x0.st";
+var id = "a0eiaje"; // < unicode > 
+var key = "LhBRttf+oI/PNHyTBrPa7HGDK/uC9fcMkGGgz63zT4Y="; // 32 bytes b64
+var completeUrl = baseUrl + "/" + id + "#" + key;
+console.log(completeUrl);
+var urlObj = new URL(completeUrl);
+/** will return a tuple of the key and id if valid
+ * 1 if no id ( creator )
+ * 2 if encryption key is missing /  wrong length
+ * 3 if key is malformed
+ */
+function validUrl(url) {
+    var key;
+    try {
+        key = atob(url.hash.substring(1));
+    }
+    catch (e) {
+        return 3;
+    }
+    var id = url.pathname.substring(1);
+    if (id === "/") {
+        return 1;
+    }
+    var binKey = binaryToArray(key);
+    if (key.length === 32) {
+        return [id, binKey];
+    }
+    else {
+        return 2;
+    }
+}
+function binaryToArray(raw) {
+    var rawLength = raw.length;
+    var array = new Uint8Array(new ArrayBuffer(rawLength));
+    for (var i = 0; i < rawLength; i++) {
+        array[i] = raw.charCodeAt(i);
+    }
+    return array;
+}
+console.log(validUrl(urlObj));

src/parse.ts

@@ -0,0 +1,43 @@
+const baseUrl: string = "https://0x0.st"
+const id: string = "a0eiaje" // < unicode > 
+const key: string = "LhBRttf+oI/PNHyTBrPa7HGDK/uC9fcMkGGgz63zT4Y=" // 32 bytes b64
+const completeUrl: string = baseUrl + "/" + id + "#" + key
+console.log(completeUrl);
+const urlObj:URL = new URL(completeUrl);
+
+/** will return a tuple of the key and id if valid 
+ * 1 if no id ( creator ) 
+ * 2 if encryption key is missing /  wrong length
+ * 3 if key is malformed
+ */
+function validUrl(url: URL): [string,Uint8Array] | number {
+	var key: string
+	try {
+		key = atob(url.hash.substring(1))
+	} catch(e) {
+		return 3
+	}
+	const id: string = url.pathname.substring(1);
+	if ( id === "/" ) {
+		return 1
+	}
+	const binKey = binaryToArray(key)
+	if ( key.length === 32 ) {
+		return [id,binKey]
+	}
+	else { 
+		return 2 
+	}
+}
+
+function binaryToArray(raw: string): Uint8Array {
+  var rawLength = raw.length;
+  var array = new Uint8Array(new ArrayBuffer(rawLength));
+
+  for(var i = 0; i < rawLength; i++) {
+    array[i] = raw.charCodeAt(i);
+  }
+  return array;
+}
+
+console.log(validUrl(urlObj));

todo.md

@@ -0,0 +1,11 @@
+- [x] baseurl / id # < 32 bytes of b64 ( key ) > 
+	- parse handling happypath and stormypath
+	- no id < no creator >
+	- < key missing / malformed / wrong length > 
+	- if malformed re-request the url
+	- test : 
+		Valid: `LhBRttf+oI/PNHyTBrPa7HGDK/uC9fcMkGGgz63zT4Y=`
+		Short: `bi83sPUmUNknOITgXStHuCfimOjpELmizvVnW8LL2Q==`
+		Long: `Yj3ryVkyOzDg6UbEHkWiNkNZcbbR5wTwtm6TZ6F7OLCI`
+		Invalid: `bZLMOC157NAlKtFP3wHXkXj0eLAu6E/Bv6rGL4HLQ===`
+

todo.txt

@@ -1,5 +0,0 @@
-- baseurl / id # < 32 bytes of b64 ( key ) > 
-	- parse handling happypath and stormypath
-	- no id < no creator >
-	- < key missing / malformed / wrong length > 
-	- if malformed re-request the url

tsconfig.json

@@ -0,0 +1,5 @@
+{
+	"files": [
+		"src/parse.ts"
+	]
+}