transliteration/src/bin/transliterate.js

Unicode to ACSII transliteration / slugify module. Works in node.js, web browser and command line.

#!/usr/bin/env node
import yargs from 'yargs';
import { parseCmdEqualOption as parseE } from '../../build/node/utils'; // eslint-disable-line import/no-unresolved
import { transliterate as tr } from '../../build/node'; // eslint-disable-line import/no-unresolved

const options = {
  unknown: '[?]',
  replace: [],
  ignore: [],
};

const argv = yargs
  .version()
  .usage('Usage: $0 <unicode> [options]')
  .option('u', {
    alias: 'unknown',
    default: options.unknown,
    describe: 'Placeholder for unknown characters',
    type: 'string',
  })
  .option('r', {
    alias: 'replace',
    default: options.replace,
    describe: 'Custom string replacement',
    type: 'array',
  })
  .option('i', {
    alias: 'ignore',
    default: options.ignore,
    describe: 'String list to ignore',
    type: 'array',
  })
  .help('h')
  .option('h', {
    alias: 'help',
  })
  .example('$0 "你好, world!" -r 好=good -r "world=Shi Jie"',
    'Replace `,` into `!`, `world` into `shijie`.\nResult: Ni good, Shi Jie!')
  .example('$0 "你好，世界!" -i 你好 -i ，',
    'Ignore `你好` and `，`.\nResult: 你好，Shi Jie !')
  .wrap(100)
  .argv;

options.unknown = argv.u;
if (argv.replace.length) {
  for (const repl of argv.replace) {
    const tmp = parseE(repl);
    if (tmp === false) {
      console.error(`Bad argument -r or --replace. Please try '${argv.$0} --help' for correct usage.`);
      process.exit(1);
    }
    options.replace.push(tmp);
  }
}
options.ignore = argv.ignore;
if (argv._.length !== 1) {
  console.error(`Invalid argument. Please try '${argv.$0} --help' for correct usage.`);
}
console.log(tr(argv._[0], options));