@vivliostyle/vfm/lib/cli.js

Custom Markdown syntax specialized in book authoring.

#!/usr/bin/env node
import fs from 'fs';
import meow from 'meow';
import readline from 'readline';
import { stringify } from './index.js';
const cli = meow(`
    Usage
      $ vfm <filename>
      $ echo <string> | vfm

    Options
      --style, -s                  Custom stylesheet path/URL
      --partial, -p                Output markdown fragments
      --title                      Document title (ignored in partial mode)
      --language                   Document language (ignored in partial mode)
      --hard-line-breaks           Add <br> at the position of hard line breaks, without needing spaces
      --disable-format-html        Disable automatic HTML format
      --disable-math               Disable math syntax
      --img-figcaption-order       Order of img and figcaption elements in figure (img-figcaption or figcaption-img)
      --assign-id-to-figcaption    Assign ID to figcaption instead of img/code

    Examples
      $ vfm input.md
`, {
    importMeta: import.meta,
    flags: {
        style: {
            type: 'string',
            shortFlag: 's',
            isMultiple: true,
        },
        partial: {
            type: 'boolean',
            shortFlag: 'p',
        },
        title: {
            type: 'string',
        },
        language: {
            type: 'string',
        },
        hardLineBreaks: {
            type: 'boolean',
        },
        disableFormatHtml: {
            type: 'boolean',
        },
        disableMath: {
            type: 'boolean',
        },
        imgFigcaptionOrder: {
            type: 'string',
            choices: ['img-figcaption', 'figcaption-img'],
        },
        assignIdToFigcaption: {
            type: 'boolean',
        },
    },
});
function compile(input) {
    // eslint-disable-next-line no-console
    console.log(stringify(input, {
        partial: cli.flags.partial,
        style: cli.flags.style,
        title: cli.flags.title,
        language: cli.flags.language,
        hardLineBreaks: cli.flags.hardLineBreaks,
        disableFormatHtml: cli.flags.disableFormatHtml,
        math: cli.flags.disableMath === undefined ? true : !cli.flags.disableMath,
        imgFigcaptionOrder: cli.flags.imgFigcaptionOrder,
        assignIdToFigcaption: cli.flags.assignIdToFigcaption,
    }));
}
function main(cli) {
    try {
        const filepath = cli.input[0];
        if (filepath) {
            return compile(fs.readFileSync(filepath).toString());
        }
        let buffer = '';
        const rl = readline.createInterface({
            input: process.stdin,
            output: process.stdout,
            terminal: false,
        });
        rl.on('pause', () => {
            compile(buffer);
            buffer = '';
        });
        rl.on('line', (line) => {
            if (line === 'EOD') {
                compile(buffer);
                buffer = '';
                return;
            }
            buffer += line + '\n';
        });
    }
    catch (err) {
        // eslint-disable-next-line no-console
        console.log(err);
    }
}
main(cli);