feat: add Escape Smart Characters operation (#2391)

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Harel Katz 2026-06-05 15:44:20 +03:00 committed by GitHub
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@ -49,6 +49,7 @@
"Escape Unicode Characters", "Escape Unicode Characters",
"Unescape Unicode Characters", "Unescape Unicode Characters",
"Normalise Unicode", "Normalise Unicode",
"Escape Smart Characters",
"To Quoted Printable", "To Quoted Printable",
"From Quoted Printable", "From Quoted Printable",
"To Punycode", "To Punycode",

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@ -0,0 +1,129 @@
/**
* @author HarelKatz [github.com/HarelKatz]
* @copyright Crown Copyright 2026
* @license Apache-2.0
*/
import Operation from "../Operation.mjs";
/**
* Escape Smart Characters operation
*/
class EscapeSmartCharacters extends Operation {
/**
* EscapeSmartCharacters constructor
*/
constructor() {
super();
this.name = "Escape Smart Characters";
this.module = "Default";
this.description = "Converts smart (typographic) Unicode characters — e.g. smart quotes, em/en dashes, ellipses, ©, ®, ™, arrows — into their plain ASCII equivalents.<br><br>Characters with no ASCII mapping (e.g. <code>☣</code>) are handled according to the 'Unmappable characters' option.<br><br>e.g. <code>“Hello” — world…</code> becomes <code>\"Hello\" -- world...</code>";
this.infoURL = "";
this.inputType = "string";
this.outputType = "string";
this.args = [
{
name: "Unmappable characters",
type: "option",
value: ["Include", "Remove", "Replace with '.'"]
}
];
}
/**
* @param {string} input
* @param {Object[]} args
* @returns {string}
*/
run(input, args) {
const [unmappable] = args;
let result = "";
for (const ch of input) {
if (ch.codePointAt(0) < 128) {
result += ch;
} else if (Object.prototype.hasOwnProperty.call(SMART_MAP, ch)) {
result += SMART_MAP[ch];
} else {
switch (unmappable) {
case "Remove":
break;
case "Replace with '.'":
result += ".";
break;
case "Include":
default:
result += ch;
break;
}
}
}
return result;
}
}
const SMART_MAP = {
// Smart double quotes
"“": "\"", // “ left double quotation mark
"”": "\"", // ” right double quotation mark
"„": "\"", // „ double low-9 quotation mark
"‟": "\"", // ‟ double high-reversed-9 quotation mark
"″": "\"", // ″ double prime
// Smart single quotes / apostrophes
"": "'", // left single quotation mark
"": "'", // right single quotation mark / apostrophe
"": "'", // single low-9 quotation mark
"": "'", // single high-reversed-9 quotation mark
"": "'", // prime
// Dashes & hyphens
"": "-", // hyphen
"": "-", // non-breaking hyphen
"": "-", // figure dash
"": "-", // en dash
"—": "--", // — em dash
"―": "--", // ― horizontal bar
// Ellipsis
"…": "...", // …
// Trademark / copyright symbols
"©": "(c)", // ©
"®": "(r)", // ®
"™": "(tm)", // ™
// Arrows
"←": "<--", // ←
"→": "-->", // →
"↑": "^", // ↑
"↓": "v", // ↓
"↔": "<->", // ↔
"⇐": "<==", // ⇐
"⇒": "==>", // ⇒
"⇔": "<=>", // ⇔
// Guillemets
"«": "<<", // «
"»": ">>", // »
"": "<", //
"": ">", //
// Math & misc symbols
"×": "x", // ×
"÷": "/", // ÷
"±": "+/-", // ±
"•": "*", // •
"·": ".", // ·
// Non-ASCII spaces
"\u00A0": " ", // NBSP
"\u2002": " ", // en space
"\u2003": " ", // em space
"\u2009": " ", // thin space
"\u200A": " " // hair space
};
export default EscapeSmartCharacters;

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@ -69,6 +69,7 @@ import "./tests/DropNthBytes.mjs";
import "./tests/ECDSA.mjs"; import "./tests/ECDSA.mjs";
import "./tests/ELFInfo.mjs"; import "./tests/ELFInfo.mjs";
import "./tests/Enigma.mjs"; import "./tests/Enigma.mjs";
import "./tests/EscapeSmartCharacters.mjs";
import "./tests/ExtractAudioMetadata.mjs"; import "./tests/ExtractAudioMetadata.mjs";
import "./tests/ExtractEmailAddresses.mjs"; import "./tests/ExtractEmailAddresses.mjs";
import "./tests/ExtractHashes.mjs"; import "./tests/ExtractHashes.mjs";

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@ -0,0 +1,132 @@
/**
* Escape Smart Characters tests
*
* @author HarelKatz [github.com/HarelKatz]
* @copyright Crown Copyright 2026
* @license Apache-2.0
*/
import TestRegister from "../../lib/TestRegister.mjs";
TestRegister.addTests([
{
"name": "Escape Smart Characters: smart quotes and apostrophes",
"input": "“Hello,” she said, yes.",
"expectedOutput": "\"Hello,\" she said, 'yes.'",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: em dash, en dash and ellipsis",
"input": "page 13 — wait…",
"expectedOutput": "page 1-3 -- wait...",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: trademark symbols",
"input": "Foo© Bar® Baz™",
"expectedOutput": "Foo(c) Bar(r) Baz(tm)",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: arrows and guillemets",
"input": "← → ↔ ⇒ « »",
"expectedOutput": "<-- --> <-> ==> << >>",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: math and misc",
"input": "3 × 4 ÷ 2 = 6, ±0.5 • item",
"expectedOutput": "3 x 4 / 2 = 6, +/-0.5 * item",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: NBSP becomes regular space",
"input": "a bc",
"expectedOutput": "a b c",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: unmappable Include preserves char",
"input": "warning: ☣ hazard",
"expectedOutput": "warning: ☣ hazard",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: unmappable Remove drops char",
"input": "warning: ☣ hazard",
"expectedOutput": "warning: hazard",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Remove"]
}
]
},
{
"name": "Escape Smart Characters: unmappable Replace substitutes dot",
"input": "warning: ☣ hazard",
"expectedOutput": "warning: . hazard",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Replace with '.'"]
}
]
},
{
"name": "Escape Smart Characters: pure ASCII passes through",
"input": "hello world! 123",
"expectedOutput": "hello world! 123",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
},
{
"name": "Escape Smart Characters: empty input",
"input": "",
"expectedOutput": "",
"recipeConfig": [
{
"op": "Escape Smart Characters",
"args": ["Include"]
}
]
}
]);