budoux/module/cli.js

/**
 * @license
 * Copyright 2021 Google LLC
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import { readFileSync } from 'fs';
import * as path from 'path';
import * as readline from 'readline';
import { Command } from 'commander';
import { HTMLProcessingParser, loadDefaultParsers, loadDefaultJapaneseParser, } from './index.js';
const CLI_VERSION = '0.6.2';
const defaultParsers = loadDefaultParsers();
/**
 * Run the command line interface program.
 * @param argv process.argv.
 */
export const cli = (argv) => {
    const program = new Command('budoux');
    program.usage('[-h] [-H] [-d STR] [-t THRES] [-m JSON] [-l LANG] [-V] [TXT]');
    program.description('BudouX is the successor to Budou, the machine learning powered line break organizer tool.');
    program
        .option('-H, --html', 'HTML mode', false)
        .option('-d, --delim <str>', 'output delimiter in TEXT mode', '---')
        .option('-m, --model <json>', 'model file path')
        .option('-l, --lang <str>', `language model to use. -m and --model will be prioritized if any.\navailable languages: ${[
        ...defaultParsers.keys(),
    ].join(', ')}`)
        .argument('[txt]', 'text');
    program.version(CLI_VERSION);
    program.parse(argv);
    const options = program.opts();
    const { lang, model, delim, html } = options;
    const { args } = program;
    const parser = model
        ? loadCustomParser(model)
        : lang && defaultParsers.has(lang)
            ? defaultParsers.get(lang)
            : loadDefaultJapaneseParser();
    switch (args.length) {
        case 0: {
            const rl = readline.createInterface({
                input: process.stdin,
            });
            let stdin = '';
            rl.on('line', line => {
                stdin += line + '\n';
            });
            process.stdin.on('end', () => {
                outputParsedTexts(parser, html, delim, [stdin]);
            });
            break;
        }
        case 1: {
            outputParsedTexts(parser, html, delim, args);
            break;
        }
        default: {
            throw new Error('Too many arguments. Please, pass the only one argument.');
        }
    }
};
/**
 * Run the command line interface program.
 * @param parser A parser.
 * @param html A flag of html output mode.
 * @param delim A delimiter to separate output sentence.
 * @param args string array to parse. Array should have only one element.
 */
const outputParsedTexts = (parser, html, delim, args) => {
    if (html) {
        const text = args[0];
        const output = parser.translateHTMLString(text);
        console.log(output);
    }
    else {
        const splitedTextsByNewLine = args[0]
            .split(/\r?\n/)
            .filter(text => text !== '');
        splitedTextsByNewLine.forEach((text, index) => {
            const parsedTexts = parser.parse(text);
            parsedTexts.forEach(parsedText => {
                console.log(parsedText);
            });
            if (index + 1 !== splitedTextsByNewLine.length)
                console.log(delim);
        });
    }
};
/**
 * Loads a parser equipped with custom model.
 * @return A parser with the loaded model.
 */
const loadCustomParser = (modelPath) => {
    const file = readFileSync(path.resolve(modelPath)).toString();
    const model = JSON.parse(file);
    return new HTMLProcessingParser(model);
};
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