chore: add README, LICENSE and re-format

.gitignore

@@ -0,0 +1,2 @@
+.idea
+.DS_Store

LICENSE

@@ -174,28 +174,3 @@
       of your accepting any such warranty or additional liability.
 
    END OF TERMS AND CONDITIONS
-
-   APPENDIX: How to apply the Apache License to your work.
-
-      To apply the Apache License to your work, attach the following
-      boilerplate notice, with the fields enclosed by brackets "[]"
-      replaced with your own identifying information. (Don't include
-      the brackets!)  The text should be enclosed in the appropriate
-      comment syntax for the file format. We also recommend that a
-      file or class name and description of purpose be included on the
-      same "printed page" as the copyright notice for easier
-      identification within third-party archives.
-
-   Copyright [yyyy] [name of copyright owner]
-
-   Licensed under the Apache License, Version 2.0 (the "License");
-   you may not use this file except in compliance with the License.
-   You may obtain a copy of the License at
-
-       http://www.apache.org/licenses/LICENSE-2.0
-
-   Unless required by applicable law or agreed to in writing, software
-   distributed under the License is distributed on an "AS IS" BASIS,
-   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-   See the License for the specific language governing permissions and
-   limitations under the License.

README.md

@@ -1,2 +1,21 @@
-# nanoid-postgres
-NanoID for PostgresSQL
+# Nano ID for PostgreSQL
+
+<img src="./logo.svg" align="right" alt="Nano ID logo by Anton Lovchikov" width="180" height="94">
+
+A tiny, secure, URL-friendly, unique string ID generator for Postgres.
+
+> “An amazing level of senseless perfectionism,
+> which is simply impossible not to respect.”
+
+* **Small.** 130 bytes (minified and gzipped). No dependencies.
+  [Size Limit] controls the size.
+* **Fast.** It is 2 times faster than UUID.
+* **Safe.** It uses hardware random generator. Can be used in clusters.
+* **Short IDs.** It uses a larger alphabet than UUID (`A-Za-z0-9_-`).
+  So ID size was reduced from 36 to 21 symbols.
+
+```sql
+SELECT nanoid();
+```
+
+Check out the root project: [ai/nanoid](https://github.com/ai/nanoid)

nanoid.sql

@@ -1,7 +1,31 @@
+/*
+ * Copyright 2022 Viascom Ltd liab. Co
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License.  You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied.  See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
 CREATE EXTENSION IF NOT EXISTS pgcrypto;
 
 CREATE OR REPLACE FUNCTION nanoid(size int DEFAULT 21, alphabet text DEFAULT '_-0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ')
-    RETURNS text AS $$
+    RETURNS text
+    LANGUAGE plpgsql stable
+    AS
+$$
 DECLARE
     idBuilder text := '';
     i int := 0;
@@ -15,7 +39,7 @@ BEGIN
 
     while true loop
             bytes := gen_random_bytes(size);
-            WHILE i < size LOOP
+            while i < size loop
                     alphabetIndex := get_byte(bytes, i) & mask;
                     if alphabetIndex < length(alphabet) then
                         idBuilder := idBuilder || substr(alphabet, alphabetIndex, 1);
@@ -24,9 +48,9 @@ BEGIN
                         end if;
                     end if;
                     i = i + 1;
-                END LOOP;
+                end loop;
 
             i := 0;
         end loop;
 END
-$$ LANGUAGE PLPGSQL STABLE;
+$$;