Add alphanum case and symbol encoders

Author: dingosky

src/lib/encoder/alphaNumCase.ts

@@ -0,0 +1,31 @@
+// MIT License
+//
+// Copyright (c) 2022 Knoxen
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+export default (uppercase = false): PuidEncoder => {
+  const decimal = '0'.charCodeAt(0)
+  const alpha = (uppercase ? 'A' : 'a').charCodeAt(0) - 10
+  
+  return (n: number) => {
+    if (n < 10) return n + decimal
+    return n + alpha
+  }
+}

src/lib/encoder/symbol.ts

@@ -0,0 +1,41 @@
+// MIT License
+//
+// Copyright (c) 2022 Knoxen
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+export default (): PuidEncoder => {
+  const s1 = '!'.charCodeAt(0)
+  const s2 = '#'.charCodeAt(0) - 1
+  const s3 = '('.charCodeAt(0) - 5
+  const s4 = ':'.charCodeAt(0) - 13
+  const s5 = '['.charCodeAt(0)
+  const s6 = ']'.charCodeAt(0) - 21
+  const s7 = '{'.charCodeAt(0) - 24
+
+  return (n: number) => {
+    if (n === 0) return s1
+    if (n < 5) return n + s2
+    if (n < 13) return n + s3
+    if (n < 20) return n + s4
+    if (n === 20) return s5
+    if (n < 24) return n + s6
+    return n + s7
+  }
+}