exampleScript.js

#!/usr/bin/env node
/**
 * @fileoverview Node.js script filling given JSON file with abbreviations.
 *
 * It expects a JSON object with a key 'abbrev', like:
 * {
 *  'abbrevs': {
 *    'Journal of Foo': {},
 *    'Journal of Bar': {},
 *    ...
 *  },
 *  ...
 * }
 * Under 'abbrevs', an object maps titles to abbreviation data.
 * When empty (or when 'reset' is given), this data is replaced by:
 *  {
 *    'all': 'abbrev using all language rules',
 *    'eng': 'abbrev using eng, mul (multilanguage) and lat (Latin) rules',
 *    'matchingPatterns': 'LTWA lines whose patterns matched, one per line'
 *  }
 * The speed is roughly 1h for 10000 titles.
 */
'use strict';
const fs = require('fs');
const AbbrevIso = require('./nodeBundle.js');

// Parse command-line arguments.
if (process.argv.length < 3 || process.argv[2] == 'reset')
  throw new Error('No filename given.');
const stateFileName = process.argv[2];
const recomputeAll = process.argv.includes('reset');

// Open JSON 'state' file.
let state = fs.readFileSync(stateFileName, 'utf8');
state = JSON.parse(state);
if (!(state instanceof Object) || !('abbrevs' in state))
  throw new Error('Invalid file: expected object with "abbrevs" key.');

// Load abbrevISO.
const ltwa = fs.readFileSync(__dirname + '/LTWA_20210702-modified.csv', 'utf8');
const shortWords = fs.readFileSync(__dirname + '/shortwords.txt', 'utf8');
const abbrevIso = new AbbrevIso.AbbrevIso(ltwa, shortWords);

// Compute the data in state['abbrevs'][title] for all titles.
for (let [title, data] of Object.entries(state['abbrevs'])) {
  let changed = false;
  if (typeof(data) !== 'object')
    data = {'all': null, 'eng': null, 'matchingPatterns': null};
  for (const lang of Object.keys(data)) {
    if (data[lang] !== null && !recomputeAll)
      continue;
    changed = true;
    const t = title.normalize('NFC');
    if (lang == 'matchingPatterns') {
      const matchingPatterns = abbrevIso.getMatchingPatterns(t);
      let s = '';
      for (const pattern of matchingPatterns)
        s += pattern.line + '\n';
      data[lang] = s;
    } else if (lang == 'all') {
      data[lang] = abbrevIso.makeAbbreviation(t);
    } else {
      const langSet = lang.split(',').concat([, 'mul', 'lat']);
      data[lang] = abbrevIso.makeAbbreviation(t, langSet);
    }
    if (lang != 'matchingPatterns')
      console.log(`"${t}"\t[${lang}]\t->\t${data[lang]}`);
  }
  if (changed)
    state['abbrevs'][title] = data;
}

// Save JSON 'state' file.
fs.writeFileSync(stateFileName, JSON.stringify(state), 'utf8');