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-rw-r--r--ext/js/data/sandbox/string-util.js76
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diff --git a/ext/js/data/sandbox/string-util.js b/ext/js/data/sandbox/string-util.js
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--- a/ext/js/data/sandbox/string-util.js
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@@ -1,76 +0,0 @@
-/*
- * Copyright (C) 2021-2022 Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <https://www.gnu.org/licenses/>.
- */
-
-/**
- * Class containing generic string utility functions.
- */
-class StringUtil {
- /**
- * Decodes the contents of an ArrayBuffer using UTF8.
- * @param {ArrayBuffer} arrayBuffer The input ArrayBuffer.
- * @returns {string} A UTF8-decoded string.
- */
- static arrayBufferUtf8Decode(arrayBuffer) {
- try {
- return new TextDecoder('utf-8').decode(arrayBuffer);
- } catch (e) {
- return decodeURIComponent(escape(this.arrayBufferToBinaryString(arrayBuffer)));
- }
- }
-
- /**
- * Converts the contents of an ArrayBuffer to a base64 string.
- * @param {ArrayBuffer} arrayBuffer The input ArrayBuffer.
- * @returns {string} A base64 string representing the binary content.
- */
- static arrayBufferToBase64(arrayBuffer) {
- return btoa(this.arrayBufferToBinaryString(arrayBuffer));
- }
-
- /**
- * Converts the contents of an ArrayBuffer to a binary string.
- * @param {ArrayBuffer} arrayBuffer The input ArrayBuffer.
- * @returns {string} A string representing the binary content.
- */
- static arrayBufferToBinaryString(arrayBuffer) {
- const bytes = new Uint8Array(arrayBuffer);
- try {
- return String.fromCharCode(...bytes);
- } catch (e) {
- let binary = '';
- for (let i = 0, ii = bytes.byteLength; i < ii; ++i) {
- binary += String.fromCharCode(bytes[i]);
- }
- return binary;
- }
- }
-
- /**
- * Converts a base64 string to an ArrayBuffer.
- * @param {string} content The binary content string encoded in base64.
- * @returns {ArrayBuffer} A new `ArrayBuffer` object corresponding to the specified content.
- */
- static base64ToArrayBuffer(content) {
- const binaryContent = atob(content);
- const length = binaryContent.length;
- const array = new Uint8Array(length);
- for (let i = 0; i < length; ++i) {
- array[i] = binaryContent.charCodeAt(i);
- }
- return array.buffer;
- }
-}