mirror of
https://github.com/astefanutti/decktape.git
synced 2024-08-18 02:30:23 +03:00
chore: pass options argument around
This commit is contained in:
Antonin Stefanutti
parent
7ba704f82b
commit
8d102c9115
508
decktape.js
508
decktape.js
@ -50,23 +50,23 @@ parser.script('decktape').options({
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default : 0,
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help : 'Duration in milliseconds between the page has loaded and starting to export slides',
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},
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urlLoadTimeout: {
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full: 'url-load-timeout',
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metavar: '<ms>',
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default: 60000,
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help: 'Timeout in milliseconds to use when waiting for the initial URL to load',
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urlLoadTimeout : {
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full : 'url-load-timeout',
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metavar : '<ms>',
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default : 60000,
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help : 'Timeout in milliseconds to use when waiting for the initial URL to load',
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},
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pageLoadTimeout: {
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full: 'page-load-timeout',
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metavar: '<ms>',
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default: 20000,
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help: 'Timeout in milliseconds to use when waiting for the slide deck page to load',
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pageLoadTimeout : {
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full : 'page-load-timeout',
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metavar : '<ms>',
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default : 20000,
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help : 'Timeout in milliseconds to use when waiting for the slide deck page to load',
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},
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bufferTimeout: {
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full: 'buffer-timeout',
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metavar: '<ms>',
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default: 30000,
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help: 'Timeout in milliseconds to use when waiting for a slide to finish buffering (set to 0 to disable)',
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bufferTimeout : {
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full : 'buffer-timeout',
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metavar : '<ms>',
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default : 30000,
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help : 'Timeout in milliseconds to use when waiting for a slide to finish buffering (set to 0 to disable)',
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},
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screenshots : {
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default : false,
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@ -244,15 +244,15 @@ process.on('unhandledRejection', error => {
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pdf.setAuthor(options.metaAuthor);
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if (options.metaSubject)
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pdf.setSubject(options.metaSubject);
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if (options.metaTitle)
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if (options.metaTitle)
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pdf.setTitle(options.metaTitle);
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page
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.on('console', async msg => {
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const args = msg.args().length
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? await Promise.all(msg.args().map(arg => arg.executionContext().evaluate(obj => obj, arg)))
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: [msg.text()];
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console.log(...args.map(arg => color(msg.type())(util.format(arg))));
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const args = msg.args().length
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? await Promise.all(msg.args().map(arg => arg.executionContext().evaluate(obj => obj, arg)))
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: [msg.text()];
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console.log(...args.map(arg => color(msg.type())(util.format(arg))));
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})
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.on('requestfailed', request => {
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// do not output warning for cancelled requests
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@ -271,10 +271,10 @@ process.on('unhandledRejection', error => {
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// TODO: improve message when reading file locally
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.then(response => console.log('Loading page finished with status: %s', response.status()))
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.then(delay(options.loadPause))
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.then(_ => createPlugin(page))
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.then(_ => createPlugin(page, plugins, options))
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.then(plugin => configurePlugin(plugin)
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.then(_ => configurePage(plugin, page))
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.then(_ => exportSlides(plugin, page, pdf))
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.then(_ => configurePage(page, plugin, options))
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.then(_ => exportSlides(page, plugin, pdf, options))
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.then(async context => {
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await writePdf(options.filename, pdf);
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console.log(chalk.green(`\nPrinted ${chalk.bold('%s')} slides`), context.exportedSlides);
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@ -286,265 +286,265 @@ process.on('unhandledRejection', error => {
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browser.close();
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process.exit(1);
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});
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})();
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async function writePdf(filename, pdf) {
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const pdfDir = path.dirname(filename);
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try {
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fs.accessSync(pdfDir, fs.constants.F_OK);
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} catch {
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fs.mkdirSync(pdfDir, { recursive: true });
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async function loadAvailablePlugins(pluginsPath) {
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const plugins = await fs.promises.readdir(pluginsPath);
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const entries = await Promise.all(plugins.map(async pluginPath => {
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const [, plugin] = pluginPath.match(/^(.*)\.js$/);
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if (plugin && (await fs.promises.stat(path.join(pluginsPath, pluginPath))).isFile()) {
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return [plugin, await import(`./plugins/${pluginPath}`)];
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}
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fs.writeFileSync(filename, await pdf.save({ addDefaultPage: false }));
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}
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}));
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return Object.fromEntries(entries.filter(Boolean));
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}
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async function loadAvailablePlugins(pluginsPath) {
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const plugins = await fs.promises.readdir(pluginsPath);
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const entries = await Promise.all(plugins.map(async pluginPath => {
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const [, plugin] = pluginPath.match(/^(.*)\.js$/);
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if (plugin && (await fs.promises.stat(path.join(pluginsPath, pluginPath))).isFile()) {
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return [plugin, await import (`./plugins/${pluginPath}`)];
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}
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}));
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return Object.fromEntries(entries.filter(Boolean));
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}
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async function createPlugin(page) {
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let plugin;
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if (!options.command || options.command === 'automatic') {
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plugin = await createActivePlugin(page);
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if (!plugin) {
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console.log('No supported DeckTape plugin detected, falling back to generic plugin');
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plugin = plugins['generic'].create(page, options);
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}
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} else {
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plugin = plugins[options.command].create(page, options);
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if (!await plugin.isActive()) {
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throw Error(`Unable to activate the ${plugin.getName()} DeckTape plugin for the address: ${options.url}`);
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}
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async function createPlugin(page, plugins, options) {
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let plugin;
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if (!options.command || options.command === 'automatic') {
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plugin = await createActivePlugin(page, plugins, options);
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if (!plugin) {
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console.log('No supported DeckTape plugin detected, falling back to generic plugin');
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plugin = plugins['generic'].create(page, options);
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}
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console.log(chalk.cyan(`${chalk.bold('%s')} plugin activated`), plugin.getName());
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return plugin;
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}
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async function createActivePlugin(page) {
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for (let id in plugins) {
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if (id === 'generic') continue;
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const plugin = plugins[id].create(page, options);
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if (await plugin.isActive()) return plugin;
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} else {
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plugin = plugins[options.command].create(page, options);
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if (!await plugin.isActive()) {
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throw Error(`Unable to activate the ${plugin.getName()} DeckTape plugin for the address: ${options.url}`);
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}
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}
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console.log(chalk.cyan(`${chalk.bold('%s')} plugin activated`), plugin.getName());
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return plugin;
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}
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async function configurePage(plugin, page) {
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if (!options.size) {
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options.size = typeof plugin.size === 'function' ? await plugin.size() : { width: 1280, height: 720 };
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}
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await page.setViewport(options.size);
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async function createActivePlugin(page, plugins, options) {
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for (let id in plugins) {
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if (id === 'generic') continue;
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const plugin = plugins[id].create(page, options);
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if (await plugin.isActive()) return plugin;
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}
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}
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async function configurePlugin(plugin) {
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if (typeof plugin.configure === 'function') {
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await plugin.configure();
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}
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async function configurePage(page, plugin, options) {
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if (!options.size) {
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options.size = typeof plugin.size === 'function' ? await plugin.size() : { width: 1280, height: 720 };
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}
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await page.setViewport(options.size);
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}
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async function exportSlides(plugin, page, pdf) {
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const context = {
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progressBarOverflow : 0,
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currentSlide : 1,
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exportedSlides : 0,
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pdfFonts : {},
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pdfXObjects : {},
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totalSlides : await plugin.slideCount(),
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};
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// TODO: support a more advanced "fragment to pause" mapping
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// for special use cases like GIF animations
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// TODO: support plugin optional promise to wait until a particular mutation
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// instead of a pause
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async function configurePlugin(plugin) {
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if (typeof plugin.configure === 'function') {
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await plugin.configure();
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}
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}
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async function exportSlides(page, plugin, pdf, options) {
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const context = {
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progressBarOverflow : 0,
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currentSlide : 1,
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exportedSlides : 0,
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pdfFonts : {},
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pdfXObjects : {},
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totalSlides : await plugin.slideCount(),
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};
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// TODO: support a more advanced "fragment to pause" mapping
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// for special use cases like GIF animations
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// TODO: support plugin optional promise to wait until a particular mutation
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// instead of a pause
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if (options.slides && !options.slides[context.currentSlide]) {
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process.stdout.write('\r' + await progressBar(plugin, context, { skip: true }));
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} else {
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await pause(options.pause);
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await exportSlide(page, plugin, pdf, context, options);
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}
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const maxSlide = options.slides ? Math.max(...Object.keys(options.slides)) : Infinity;
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let hasNext = await hasNextSlide(plugin, context);
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while (hasNext && context.currentSlide < maxSlide) {
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await nextSlide(plugin, context);
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await pause(options.pause);
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if (options.slides && !options.slides[context.currentSlide]) {
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process.stdout.write('\r' + await progressBar(plugin, context, { skip: true }));
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} else {
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await pause(options.pause);
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await exportSlide(plugin, page, pdf, context);
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await exportSlide(page, plugin, pdf, context, options);
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}
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const maxSlide = options.slides ? Math.max(...Object.keys(options.slides)) : Infinity;
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let hasNext = await hasNextSlide(plugin, context);
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while (hasNext && context.currentSlide < maxSlide) {
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await nextSlide(plugin, context);
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await pause(options.pause);
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if (options.slides && !options.slides[context.currentSlide]) {
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process.stdout.write('\r' + await progressBar(plugin, context, { skip: true }));
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} else {
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await exportSlide(plugin, page, pdf, context);
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}
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hasNext = await hasNextSlide(plugin, context);
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}
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// Flush consolidated fonts
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Object.values(context.pdfFonts).forEach(({ ref, font }) => {
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pdf.context.assign(ref, pdf.context.flateStream(font.write({ type: 'ttf', hinting: true })));
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});
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return context;
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hasNext = await hasNextSlide(plugin, context);
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}
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// Flush consolidated fonts
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Object.values(context.pdfFonts).forEach(({ ref, font }) => {
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pdf.context.assign(ref, pdf.context.flateStream(font.write({ type: 'ttf', hinting: true })));
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});
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return context;
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}
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async function exportSlide(plugin, page, pdf, context) {
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process.stdout.write('\r' + await progressBar(plugin, context));
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async function exportSlide(page, plugin, pdf, context, options) {
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process.stdout.write('\r' + await progressBar(plugin, context));
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const buffer = await page.pdf({
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width : options.size.width,
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height : options.size.height,
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printBackground : true,
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pageRanges : '1',
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displayHeaderFooter : false,
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timeout : options.bufferTimeout,
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});
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await printSlide(pdf, await PDFDocument.load(buffer, { parseSpeed: ParseSpeeds.Fastest }), context);
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context.exportedSlides++;
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const buffer = await page.pdf({
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width : options.size.width,
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height : options.size.height,
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printBackground : true,
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pageRanges : '1',
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displayHeaderFooter : false,
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timeout : options.bufferTimeout,
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});
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await printSlide(pdf, await PDFDocument.load(buffer, { parseSpeed: ParseSpeeds.Fastest }), context);
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context.exportedSlides++;
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if (options.screenshots) {
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for (let resolution of options.screenshotSizes || [options.size]) {
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await page.setViewport(resolution);
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// Delay page rendering to wait for the resize event to complete,
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// e.g. for impress.js (may be needed to be configurable)
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await pause(1000);
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await page.screenshot({
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path: path.join(options.screenshotDirectory, options.filename
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.replace('.pdf', `_${context.currentSlide}_${resolution.width}x${resolution.height}.${options.screenshotFormat}`)),
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fullPage: false,
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omitBackground: true,
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});
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await page.setViewport(options.size);
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await pause(1000);
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}
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if (options.screenshots) {
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for (let resolution of options.screenshotSizes || [options.size]) {
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await page.setViewport(resolution);
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// Delay page rendering to wait for the resize event to complete,
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// e.g. for impress.js (may be needed to be configurable)
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await pause(1000);
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await page.screenshot({
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path: path.join(options.screenshotDirectory, options.filename
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.replace('.pdf', `_${context.currentSlide}_${resolution.width}x${resolution.height}.${options.screenshotFormat}`)),
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fullPage: false,
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omitBackground: true,
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});
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await page.setViewport(options.size);
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await pause(1000);
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}
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}
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}
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async function printSlide(pdf, slide, context) {
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const duplicatedEntries = [];
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const [page] = await pdf.copyPages(slide, [0]);
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pdf.addPage(page);
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// Traverse the page to consolidate duplicates
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parseResources(page.node);
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// And delete all the collected duplicates
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duplicatedEntries.forEach(ref => pdf.context.delete(ref));
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function parseResources(dictionary) {
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const resources = dictionary.get(PDFName.Resources);
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if (resources.has(PDFName.XObject)) {
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const xObject = resources.get(PDFName.XObject);
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xObject.entries().forEach(entry => parseXObject(entry, xObject));
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}
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if (resources.has(PDFName.Font)) {
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resources.get(PDFName.Font).entries().forEach(parseFont);
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}
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}
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async function printSlide(pdf, slide, context) {
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const duplicatedEntries = [];
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const [page] = await pdf.copyPages(slide, [0]);
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pdf.addPage(page);
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// Traverse the page to consolidate duplicates
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parseResources(page.node);
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// And delete all the collected duplicates
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duplicatedEntries.forEach(ref => pdf.context.delete(ref));
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function parseResources(dictionary) {
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const resources = dictionary.get(PDFName.Resources);
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if (resources.has(PDFName.XObject)) {
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const xObject = resources.get(PDFName.XObject);
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xObject.entries().forEach(entry => parseXObject(entry, xObject));
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}
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if (resources.has(PDFName.Font)) {
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resources.get(PDFName.Font).entries().forEach(parseFont);
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}
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}
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function parseXObject([name, entry], xObject) {
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const object = page.node.context.lookup(entry);
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const subtype = object.dict.get(PDFName.of('Subtype'));
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if (subtype === PDFName.of('Image')) {
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const digest = crypto.createHash('SHA1').update(object.contents).digest('hex');
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if (!context.pdfXObjects[digest]) {
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context.pdfXObjects[digest] = entry;
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} else {
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xObject.set(name, context.pdfXObjects[digest]);
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duplicatedEntries.push(entry);
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}
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function parseXObject([name, entry], xObject) {
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const object = page.node.context.lookup(entry);
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const subtype = object.dict.get(PDFName.of('Subtype'));
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if (subtype === PDFName.of('Image')) {
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const digest = crypto.createHash('SHA1').update(object.contents).digest('hex');
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if (!context.pdfXObjects[digest]) {
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context.pdfXObjects[digest] = entry;
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} else {
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parseResources(object.dict);
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xObject.set(name, context.pdfXObjects[digest]);
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duplicatedEntries.push(entry);
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}
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};
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function parseFont([_, entry]) {
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const object = page.node.context.lookup(entry);
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const subtype = object.get(PDFName.of('Subtype'));
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// See "Introduction to Font Data Structures" from PDF specification
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if (subtype === PDFName.of('Type0')) {
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// TODO: properly support composite fonts with multiple descendants
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const descendant = page.node.context.lookup(object.get(PDFName.of('DescendantFonts')).get(0));
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if (descendant.get(PDFName.of('Subtype')) === PDFName.of('CIDFontType2')) {
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const descriptor = page.node.context.lookup(descendant.get(PDFName.of('FontDescriptor')));
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const ref = descriptor.get(PDFName.of('FontFile2'));
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const file = page.node.context.lookup(ref);
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if (!file) {
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// The font has already been processed and removed
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return;
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}
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const bytes = decodePDFRawStream(file).decode();
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const font = Font.create(Buffer.from(bytes), { type: 'ttf', hinting: true });
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// Some fonts happen to have no metadata, which is required by fonteditor
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if (!font.data.name) {
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font.data.name = {};
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}
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// PDF font name does not contain sub family on Windows 10,
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// so a more robust key is computed from the font metadata
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const id = descriptor.get(PDFName.of('FontName')).value() + ' - ' + fontMetadataKey(font.data.name);
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if (context.pdfFonts[id]) {
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const f = context.pdfFonts[id].font;
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font.data.glyf.forEach((g, i) => {
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if (g.contours && g.contours.length > 0) {
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if (!f.data.glyf[i] || !f.data.glyf[i].contours || f.data.glyf[i].contours.length === 0) {
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mergeGlyph(f, i, g);
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}
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} else if (g.compound) {
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if (!f.data.glyf[i] || typeof f.data.glyf[i].compound === 'undefined') {
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mergeGlyph(f, i, g);
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}
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}
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});
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descriptor.set(PDFName.of('FontFile2'), context.pdfFonts[id].ref);
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duplicatedEntries.push(ref);
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} else {
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context.pdfFonts[id] = { ref: ref, font: font };
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}
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}
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}
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};
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function mergeGlyph(font, index, glyf) {
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if (font.data.glyf.length <= index) {
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for (let i = font.data.glyf.length; i < index; i++) {
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font.data.glyf.push({ contours: Array(0), advanceWidth: 0, leftSideBearing: 0 });
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}
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font.data.glyf.push(glyf);
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} else {
|
||||
font.data.glyf[index] = glyf;
|
||||
}
|
||||
}
|
||||
|
||||
function fontMetadataKey(font) {
|
||||
const keys = ['fontFamily', 'fontSubFamily', 'fullName', 'preferredFamily', 'preferredSubFamily', 'uniqueSubFamily'];
|
||||
return Object.entries(font)
|
||||
.filter(([key, _]) => keys.includes(key))
|
||||
.reduce((r, [k, v], i) => r + (i > 0 ? ',' : '') + k + '=' + v, '');
|
||||
}
|
||||
}
|
||||
|
||||
async function hasNextSlide(plugin, context) {
|
||||
if (typeof plugin.hasNextSlide === 'function') {
|
||||
return await plugin.hasNextSlide();
|
||||
} else {
|
||||
return context.currentSlide < context.totalSlides;
|
||||
parseResources(object.dict);
|
||||
}
|
||||
};
|
||||
|
||||
function parseFont([_, entry]) {
|
||||
const object = page.node.context.lookup(entry);
|
||||
const subtype = object.get(PDFName.of('Subtype'));
|
||||
// See "Introduction to Font Data Structures" from PDF specification
|
||||
if (subtype === PDFName.of('Type0')) {
|
||||
// TODO: properly support composite fonts with multiple descendants
|
||||
const descendant = page.node.context.lookup(object.get(PDFName.of('DescendantFonts')).get(0));
|
||||
if (descendant.get(PDFName.of('Subtype')) === PDFName.of('CIDFontType2')) {
|
||||
const descriptor = page.node.context.lookup(descendant.get(PDFName.of('FontDescriptor')));
|
||||
const ref = descriptor.get(PDFName.of('FontFile2'));
|
||||
const file = page.node.context.lookup(ref);
|
||||
if (!file) {
|
||||
// The font has already been processed and removed
|
||||
return;
|
||||
}
|
||||
const bytes = decodePDFRawStream(file).decode();
|
||||
const font = Font.create(Buffer.from(bytes), { type: 'ttf', hinting: true });
|
||||
// Some fonts happen to have no metadata, which is required by fonteditor
|
||||
if (!font.data.name) {
|
||||
font.data.name = {};
|
||||
}
|
||||
// PDF font name does not contain sub family on Windows 10,
|
||||
// so a more robust key is computed from the font metadata
|
||||
const id = descriptor.get(PDFName.of('FontName')).value() + ' - ' + fontMetadataKey(font.data.name);
|
||||
if (context.pdfFonts[id]) {
|
||||
const f = context.pdfFonts[id].font;
|
||||
font.data.glyf.forEach((g, i) => {
|
||||
if (g.contours && g.contours.length > 0) {
|
||||
if (!f.data.glyf[i] || !f.data.glyf[i].contours || f.data.glyf[i].contours.length === 0) {
|
||||
mergeGlyph(f, i, g);
|
||||
}
|
||||
} else if (g.compound) {
|
||||
if (!f.data.glyf[i] || typeof f.data.glyf[i].compound === 'undefined') {
|
||||
mergeGlyph(f, i, g);
|
||||
}
|
||||
}
|
||||
});
|
||||
descriptor.set(PDFName.of('FontFile2'), context.pdfFonts[id].ref);
|
||||
duplicatedEntries.push(ref);
|
||||
} else {
|
||||
context.pdfFonts[id] = { ref: ref, font: font };
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
function mergeGlyph(font, index, glyf) {
|
||||
if (font.data.glyf.length <= index) {
|
||||
for (let i = font.data.glyf.length; i < index; i++) {
|
||||
font.data.glyf.push({ contours: Array(0), advanceWidth: 0, leftSideBearing: 0 });
|
||||
}
|
||||
font.data.glyf.push(glyf);
|
||||
} else {
|
||||
font.data.glyf[index] = glyf;
|
||||
}
|
||||
}
|
||||
|
||||
async function nextSlide(plugin, context) {
|
||||
context.currentSlide++;
|
||||
return plugin.nextSlide();
|
||||
function fontMetadataKey(font) {
|
||||
const keys = ['fontFamily', 'fontSubFamily', 'fullName', 'preferredFamily', 'preferredSubFamily', 'uniqueSubFamily'];
|
||||
return Object.entries(font)
|
||||
.filter(([key, _]) => keys.includes(key))
|
||||
.reduce((r, [k, v], i) => r + (i > 0 ? ',' : '') + k + '=' + v, '');
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: add progress bar, duration, ETA and file size
|
||||
async function progressBar(plugin, context, { skip } = { skip : false }) {
|
||||
const cols = [];
|
||||
const index = await plugin.currentSlideIndex();
|
||||
cols.push(`${skip ? 'Skipping' : 'Printing'} slide `);
|
||||
cols.push(`#${index}`.padEnd(8));
|
||||
cols.push(' (');
|
||||
cols.push(`${context.currentSlide}`.padStart(context.totalSlides ? context.totalSlides.toString().length : 3));
|
||||
cols.push('/');
|
||||
cols.push(context.totalSlides || ' ?');
|
||||
cols.push(') ...');
|
||||
// erase overflowing slide fragments
|
||||
cols.push(' '.repeat(Math.max(context.progressBarOverflow - Math.max(index.length + 1 - 8, 0), 0)));
|
||||
context.progressBarOverflow = Math.max(index.length + 1 - 8, 0);
|
||||
return cols.join('');
|
||||
async function hasNextSlide(plugin, context) {
|
||||
if (typeof plugin.hasNextSlide === 'function') {
|
||||
return await plugin.hasNextSlide();
|
||||
} else {
|
||||
return context.currentSlide < context.totalSlides;
|
||||
}
|
||||
})();
|
||||
}
|
||||
|
||||
async function nextSlide(plugin, context) {
|
||||
context.currentSlide++;
|
||||
return plugin.nextSlide();
|
||||
}
|
||||
|
||||
async function writePdf(filename, pdf) {
|
||||
const pdfDir = path.dirname(filename);
|
||||
try {
|
||||
fs.accessSync(pdfDir, fs.constants.F_OK);
|
||||
} catch {
|
||||
fs.mkdirSync(pdfDir, { recursive: true });
|
||||
}
|
||||
fs.writeFileSync(filename, await pdf.save({ addDefaultPage: false }));
|
||||
}
|
||||
|
||||
// TODO: add progress bar, duration, ETA and file size
|
||||
async function progressBar(plugin, context, { skip } = { skip: false }) {
|
||||
const cols = [];
|
||||
const index = await plugin.currentSlideIndex();
|
||||
cols.push(`${skip ? 'Skipping' : 'Printing'} slide `);
|
||||
cols.push(`#${index}`.padEnd(8));
|
||||
cols.push(' (');
|
||||
cols.push(`${context.currentSlide}`.padStart(context.totalSlides ? context.totalSlides.toString().length : 3));
|
||||
cols.push('/');
|
||||
cols.push(context.totalSlides || ' ?');
|
||||
cols.push(') ...');
|
||||
// erase overflowing slide fragments
|
||||
cols.push(' '.repeat(Math.max(context.progressBarOverflow - Math.max(index.length + 1 - 8, 0), 0)));
|
||||
context.progressBarOverflow = Math.max(index.length + 1 - 8, 0);
|
||||
return cols.join('');
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user