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ESM: Ported CharEnc operations
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n1474335
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58
src/core/lib/ChrEnc.mjs
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58
src/core/lib/ChrEnc.mjs
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/**
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* Character encoding resources.
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*
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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/**
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* Character encoding format mappings.
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*/
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export const IO_FORMAT = {
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"UTF-8 (65001)": 65001,
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"UTF-7 (65000)": 65000,
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"UTF16LE (1200)": 1200,
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"UTF16BE (1201)": 1201,
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"UTF16 (1201)": 1201,
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"IBM EBCDIC International (500)": 500,
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"IBM EBCDIC US-Canada (37)": 37,
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"Windows-874 Thai (874)": 874,
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"Japanese Shift-JIS (932)": 932,
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"Simplified Chinese GBK (936)": 936,
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"Korean (949)": 949,
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"Traditional Chinese Big5 (950)": 950,
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"Windows-1250 Central European (1250)": 1250,
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"Windows-1251 Cyrillic (1251)": 1251,
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"Windows-1252 Latin (1252)": 1252,
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"Windows-1253 Greek (1253)": 1253,
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"Windows-1254 Turkish (1254)": 1254,
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"Windows-1255 Hebrew (1255)": 1255,
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"Windows-1256 Arabic (1256)": 1256,
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"Windows-1257 Baltic (1257)": 1257,
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"Windows-1258 Vietnam (1258)": 1258,
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"US-ASCII (20127)": 20127,
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"Simplified Chinese GB2312 (20936)": 20936,
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"KOI8-R Russian Cyrillic (20866)": 20866,
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"KOI8-U Ukrainian Cyrillic (21866)": 21866,
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"ISO-8859-1 Latin 1 Western European (28591)": 28591,
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"ISO-8859-2 Latin 2 Central European (28592)": 28592,
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"ISO-8859-3 Latin 3 South European (28593)": 28593,
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"ISO-8859-4 Latin 4 North European (28594)": 28594,
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"ISO-8859-5 Latin/Cyrillic (28595)": 28595,
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"ISO-8859-6 Latin/Arabic (28596)": 28596,
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"ISO-8859-7 Latin/Greek (28597)": 28597,
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"ISO-8859-8 Latin/Hebrew (28598)": 28598,
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"ISO-8859-9 Latin 5 Turkish (28599)": 28599,
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"ISO-8859-10 Latin 6 Nordic (28600)": 28600,
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"ISO-8859-11 Latin/Thai (28601)": 28601,
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"ISO-8859-13 Latin 7 Baltic Rim (28603)": 28603,
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"ISO-8859-14 Latin 8 Celtic (28604)": 28604,
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"ISO-8859-15 Latin 9 (28605)": 28605,
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"ISO-8859-16 Latin 10 (28606)": 28606,
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"ISO-2022 JIS Japanese (50222)": 50222,
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"EUC Japanese (51932)": 51932,
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"EUC Korean (51949)": 51949,
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"Simplified Chinese GB18030 (54936)": 54936,
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};
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55
src/core/operations/DecodeText.mjs
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src/core/operations/DecodeText.mjs
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/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import cptable from "../vendor/js-codepage/cptable.js";
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import {IO_FORMAT} from "../lib/ChrEnc";
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/**
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* Decode text operation
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*/
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class DecodeText extends Operation {
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/**
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* DecodeText constructor
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*/
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constructor() {
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super();
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this.name = "Decode text";
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this.module = "CharEnc";
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this.description = [
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"Decodes text from the chosen character encoding.",
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"<br><br>",
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"Supported charsets are:",
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"<ul>",
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Object.keys(IO_FORMAT).map(e => `<li>${e}</li>`).join("\n"),
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"</ul>",
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].join("\n");
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this.inputType = "byteArray";
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this.outputType = "string";
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this.args = [
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{
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"name": "Encoding",
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"type": "option",
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"value": Object.keys(IO_FORMAT)
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}
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];
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}
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/**
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* @param {byteArray} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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const format = IO_FORMAT[args[0]];
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return cptable.utils.decode(format, input);
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}
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}
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export default DecodeText;
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58
src/core/operations/EncodeText.mjs
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src/core/operations/EncodeText.mjs
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/**
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* @author n1474335 [n1474335@gmail.com]
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* @copyright Crown Copyright 2016
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import cptable from "../vendor/js-codepage/cptable.js";
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import {IO_FORMAT} from "../lib/ChrEnc";
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/**
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* Encode text operation
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*/
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class EncodeText extends Operation {
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/**
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* EncodeText constructor
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*/
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constructor() {
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super();
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this.name = "Encode text";
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this.module = "CharEnc";
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this.description = [
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"Encodes text into the chosen character encoding.",
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"<br><br>",
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"Supported charsets are:",
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"<ul>",
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Object.keys(IO_FORMAT).map(e => `<li>${e}</li>`).join("\n"),
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"</ul>",
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].join("\n");
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this.inputType = "string";
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this.outputType = "byteArray";
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this.args = [
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{
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"name": "Encoding",
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"type": "option",
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"value": Object.keys(IO_FORMAT)
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}
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];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {byteArray}
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*/
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run(input, args) {
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const format = IO_FORMAT[args[0]];
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let encoded = cptable.utils.encode(format, input);
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encoded = Array.from(encoded);
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return encoded;
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}
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}
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export default EncodeText;
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