X-Git-Url: https://git.ladys.computer/Pisces/blobdiff_plain/cb5a5ceca492121141a12d921afc78dbde7fbfa1..3d2a5e40eaf384aee6b9699bc71af015fd2cb2e9:/base64.js

diff --git a/base64.js b/base64.js
deleted file mode 100644
index e9661b7..0000000
--- a/base64.js
+++ /dev/null
@@ -1,232 +0,0 @@
-// ♓🌟 Piscēs ∷ base64.js
-// ====================================================================
-//
-// Copyright © 2020–2022 Lady [@ Lady’s Computer].
-//
-// This Source Code Form is subject to the terms of the Mozilla Public
-// License, v. 2.0. If a copy of the MPL was not distributed with this
-// file, You can obtain one at <https://mozilla.org/MPL/2.0/>.
-
-import { fill, map, reduce } from "./collection.js";
-import { bind, call } from "./function.js";
-import { ceil, floor } from "./numeric.js";
-import { hasOwnProperty, objectCreate } from "./object.js";
-import {
-  getCodeUnit,
-  rawString,
-  stringFromCodeUnits,
-  stringReplace,
-} from "./string.js";
-
-const Buffer = ArrayBuffer;
-const View = DataView;
-const TypedArray = Object.getPrototypeOf(Uint8Array);
-const { prototype: arrayPrototype } = Array;
-const { prototype: bufferPrototype } = Buffer;
-const { iterator: iteratorSymbol } = Symbol;
-const { prototype: rePrototype } = RegExp;
-const { prototype: typedArrayPrototype } = TypedArray;
-const { prototype: viewPrototype } = View;
-
-const { [iteratorSymbol]: arrayIterator } = arrayPrototype;
-const {
-  next: arrayIteratorNext,
-} = Object.getPrototypeOf([][iteratorSymbol]());
-const getBufferByteLength =
-  Object.getOwnPropertyDescriptor(bufferPrototype, "byteLength").get;
-const getTypedArrayBuffer =
-  Object.getOwnPropertyDescriptor(typedArrayPrototype, "buffer").get;
-const getViewBuffer =
-  Object.getOwnPropertyDescriptor(viewPrototype, "buffer").get;
-const { exec: reExec } = rePrototype;
-const {
-  getUint8: viewGetUint8,
-  setUint8: viewSetUint8,
-  setUint16: viewSetUint16,
-} = viewPrototype;
-
-const base64CodeUnitIterablePrototype = {
-  [iteratorSymbol]() {
-    return {
-      next: bind(
-        arrayIteratorNext,
-        call(arrayIterator, this, []),
-        [],
-      ),
-    };
-  },
-};
-
-/**
- * Returns an ArrayBuffer generated from the provided Base64.
- *
- * This function can also be used as a tag for a template literal. The
- * literal will be interpreted akin to `String.raw`.
- */
-export const a2b = ($, ...$s) => {
-  const source = stringReplace(
-    typeof $ == "string"
-      ? $
-      : hasOwnProperty($, "raw")
-      ? rawString($, ...$s)
-      : `${$}`,
-    /[\t\n\f\r ]+/gu,
-    "",
-  );
-  const u6s = map(
-    source.length % 4 == 0
-      ? stringReplace(source, /={1,2}$/u, "")
-      : source,
-    (ucsCharacter) => {
-      const code = getCodeUnit(ucsCharacter, 0);
-      const result = code >= 0x41 && code <= 0x5A
-        ? code - 65
-        : code >= 0x61 && code <= 0x7A
-        ? code - 71
-        : code >= 0x30 && code <= 0x39
-        ? code + 4
-        : code == 0x2B
-        ? 62
-        : code == 0x2F
-        ? 63
-        : -1;
-      if (result < 0) {
-        throw new RangeError(
-          `Piscēs: Invalid character in Base64: ${character}.`,
-        );
-      } else {
-        return result;
-      }
-    },
-  );
-  const { length } = u6s;
-  const dataView = new View(new Buffer(floor(length * 3 / 4)));
-  for (let index = 0; index < length - 1;) {
-    const dataIndex = ceil(index * 3 / 4);
-    const remainder = index % 3;
-    if (remainder == 0) {
-      call(viewSetUint8, dataView, [
-        dataIndex,
-        (u6s[index] << 2) + (u6s[++index] >> 4),
-      ]);
-    } else if (remainder == 1) {
-      call(viewSetUint8, dataView, [
-        dataIndex,
-        ((u6s[index] & 0xF) << 4) + (u6s[++index] >> 2),
-      ]);
-    } else {
-      call(viewSetUint8, dataView, [
-        dataIndex,
-        ((u6s[index] & 0x3) << 6) + u6s[++index],
-      ]);
-    }
-  }
-  return call(getViewBuffer, dataView, []);
-};
-
-/**
- * Returns a (big‐endian) base64 string created from a typed array,
- * buffer, or string.
- *
- * This function can also be used as a tag for a template literal. The
- * literal will be interpreted akin to `String.raw`.
- */
-export const b2a = ($, ...$s) => {
-  const buffer = $ instanceof Buffer
-    ? $
-    : $ instanceof View
-    ? call(getViewBuffer, $, [])
-    : $ instanceof TypedArray
-    ? call(getTypedArrayBuffer, $, [])
-    : ((string) =>
-      call(
-        getViewBuffer,
-        reduce(
-          string,
-          (result, ucsCharacter, index) => (
-            call(viewSetUint16, result, [
-              index * 2,
-              getCodeUnit(ucsCharacter, 0),
-            ]), result
-          ),
-          new View(new Buffer(string.length * 2)),
-        ),
-        [],
-      ))(
-        typeof $ == "string"
-          ? $
-          : hasOwnProperty($, "raw")
-          ? rawString($, ...$s)
-          : `${$}`,
-      );
-  const dataView = new View(buffer);
-  const byteLength = call(getBufferByteLength, buffer, []);
-  const minimumLengthOfResults = ceil(byteLength * 4 / 3);
-  const resultingCodeUnits = fill(
-    objectCreate(
-      base64CodeUnitIterablePrototype,
-      {
-        length: {
-          value: minimumLengthOfResults +
-            (4 - (minimumLengthOfResults % 4)) % 4,
-        },
-      },
-    ),
-    0x3D,
-  );
-  for (let index = 0; index < byteLength;) {
-    const codeUnitIndex = ceil(index * 4 / 3);
-    const currentIndex = codeUnitIndex + +(
-      index % 3 == 0 && resultingCodeUnits[codeUnitIndex] != 0x3D
-    );
-    const remainder = currentIndex % 4;
-    const u6 = remainder == 0
-      ? call(viewGetUint8, dataView, [index]) >> 2
-      : remainder == 1
-      ? ((call(viewGetUint8, dataView, [index++]) & 0x3) << 4) +
-        (index < byteLength
-          ? call(viewGetUint8, dataView, [index]) >> 4
-          : 0)
-      : remainder == 2
-      ? ((call(viewGetUint8, dataView, [index++]) & 0xF) << 2) +
-        (index < byteLength
-          ? call(viewGetUint8, dataView, [index]) >> 6
-          : 0)
-      : call(viewGetUint8, dataView, [index++]) & 0x3F;
-    const result = u6 < 26
-      ? u6 + 65
-      : u6 < 52
-      ? u6 + 71
-      : u6 < 62
-      ? u6 - 4
-      : u6 < 63
-      ? 43
-      : u6 < 64
-      ? 47
-      : -1;
-    if (result < 0) {
-      throw new RangeError(`Piscēs: Unexpected Base64 value: ${u6}.`);
-    } else {
-      resultingCodeUnits[currentIndex] = result;
-    }
-  }
-  return stringFromCodeUnits(...resultingCodeUnits);
-};
-
-/**
- * Returns whether the provided value is a Base64 string.
- *
- * Returns false if the provided value is not a string primitive.
- */
-export const isBase64 = ($) => {
-  if (typeof $ !== "string") {
-    return false;
-  } else {
-    const source = stringReplace($, /[\t\n\f\r ]+/gu, "");
-    const trimmed = source.length % 4 == 0
-      ? stringReplace(source, /={1,2}$/u, "")
-      : source;
-    return trimmed.length % 4 != 1 &&
-      call(reExec, /[^0-9A-Za-z+\/]/u, [trimmed]) == null;
-  }
-};