Transform peshitta into hebrew letters

peshitta-hebrew-letters.js

// npm install fast-glob
// wget https://github.com/ETCBC/peshitta/archive/refs/tags/v0.5.zip && unzip v0.5.zip

const fg = require("fast-glob");
const path = require("path");
const fs = require("fs");

const SyriacMap = {
  ܐ: /* Aleph */ "א",
  ܒ: /* Beth */ "ב",
  ܓ: /* Gimel */ "ג",
  ܕ: /* Daleth */ "ד",
  ܗ: /* He */ "ה",
  ܘ: /* Vav */ "ו",
  ܙ: /* Zayin */ "ז",
  ܚ: /* Het */ "ח",
  ܛ: /* Tet */ "ט",
  ܝ: /* Yod */ "י",
  ܟ: /* Kaf */ "כ",
  ܠ: /* Lemed */ "ל",
  ܡ: /* Mem */ "מ",
  ܢ: /* Nun */ "נ",
  ܣ: /* Samekh */ "ס",
  ܤ: /* Samekh */ "ס",
  ܥ: /* Ayin */ "ע",
  ܦ: /* Pe */ "פ",
  ܨ: /* Tsadi */ "צ",
  ܩ: /* Qof */ "ק",
  ܪ: /* Resh */ "ר",
  ܫ: /* Shin */ "ש",
  ܬ: /* Tav */ "ת",
};

const finalFormMap = {
  מ: /** Mem */ "ם",
  נ: /** Nun */ "ן",
  צ: /** Tsadi */ "ץ",
  פ: /** Pe */ "ף",
  כ: /** Kaf */ "ך",
};

const source_dir = "./peshitta-0.5/plain";
const target_dir = "./peshitta";

async function main() {
  await fs.promises.mkdir(target_dir, { recursive: true });
  const source = path.resolve(source_dir, "**/*.txt");
  const files = await fg(source);
  const specialcharsMap = new Map();
  for (const origin of files) {
    const filename = path.basename(origin);
    let body = await fs.promises.readFile(origin, "utf8");
    const target = path.join(target_dir, filename);
    let last = "";
    body = body
      .split("")
      .map((char) => {
        let out = SyriacMap[char];
        if (!out) {
          const code = char.codePointAt(0);
          const hex = code.toString(16);
          if (code > 255) {
            const item = specialcharsMap.get(char) ?? { hex, count: 0 };
            item.count++;
            specialcharsMap.set(char, item);
            out = "";
          } else {
            out = char;
          }
        }
        last = char;
        return out;
      })
      .join("")
      .replace(
        /([מנצפכ])([^\u05D0-\u05EA])/g,
        (_m, m1, m2) => finalFormMap[m1] + m2
      );

    await fs.promises.writeFile(target, body);
  }
  console.log("specialcharsMap: ", specialcharsMap);
}

main().catch((e) => {
  console.log(e);
  process.exit(1);
});