@zsnout/ithkuil/generate/ca/geminate.js

A set of tools which can generate and parse romanized Ithkuil text and which can generate Ithkuil script from text and JSON data.

import { isLegalConsonantForm } from "../phonotactics/general.js";
/**
 * Attempts to geminate a Ca form.
 *
 * @param text The Ca form to be geminated.
 * @returns The (possibly) geminated Ca form.
 */
export function attemptGemination(text) {
    if (text.length == 1) {
        return text + text;
    }
    if (text == "tļ") {
        return "ttļ";
    }
    if (/^[tkpdgb][lrřwy]/.test(text)) {
        return text[0] + text[0] + text.slice(1);
    }
    {
        const nextText = text.replace(/[sšzžçcčjż]/, (match) => match + match);
        if (nextText != text) {
            return nextText;
        }
    }
    if (/^[fţvḑnmň]/.test(text)) {
        return text[0] + text[0] + text.slice(1);
    }
    if (/^[tkp][sšfţç]/.test(text)) {
        return text[0] + text[1] + text[1] + text.slice(2);
    }
    if (text.endsWith("pt"))
        return text.replace(/pt$/, "bbḑ");
    if (text.endsWith("pk"))
        return text.replace(/pk$/, "bbv");
    if (text.endsWith("kt"))
        return text.replace(/kt$/, "ggḑ");
    if (text.endsWith("kp"))
        return text.replace(/kp$/, "ggv");
    if (text.endsWith("tk"))
        return text.replace(/tk$/, "ḑvv");
    if (text.endsWith("tp"))
        return text.replace(/tp$/, "ddv");
    if (text.endsWith("pm"))
        return text.replace(/pm$/, "vvm");
    if (text.endsWith("pn"))
        return text.replace(/pn$/, "vvn");
    if (text.endsWith("km"))
        return text.replace(/km$/, "xxm");
    if (text.endsWith("kn"))
        return text.replace(/kn$/, "xxn");
    if (text.endsWith("tm"))
        return text.replace(/tm$/, "ḑḑm");
    if (text.endsWith("tn"))
        return text.replace(/tn$/, "ḑḑn");
    if (text.endsWith("bm"))
        return text.replace(/bm$/, "mmw");
    if (text.endsWith("bn"))
        return text.replace(/bn$/, "mml");
    if (text.endsWith("gm"))
        return text.replace(/gm$/, "ňňw");
    if (text.endsWith("gn"))
        return text.replace(/gn$/, "ňňl");
    if (text.endsWith("dm"))
        return text.replace(/dm$/, "nnw");
    if (text.endsWith("dn"))
        return text.replace(/dn$/, "nnl");
    if (/^[lrř]/.test(text)) {
        const rest = attemptGemination(text.slice(1));
        const firstAttempt = text[0] + rest;
        if (rest != text.slice(1) && isLegalConsonantForm(firstAttempt)) {
            return firstAttempt;
        }
        return text[0] + text[0] + text.slice(1);
    }
    return text;
}