754df58d4e
This patch drops the markdown-toc module and instead rolls out our own simple markdown table-of-contents generator. As a side effect, it fixes links to `page.$` and `page.$$`.
109 lines
4.0 KiB
JavaScript
109 lines
4.0 KiB
JavaScript
/**
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* Copyright 2017 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const Message = require('../Message');
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module.exports = function(sources, version) {
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// Release version is everything that doesn't include "-".
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const isReleaseVersion = !version.includes('-');
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const lastReleasedAPILink = `[API](https://github.com/GoogleChrome/puppeteer/blob/v${version.split('-')[0]}/docs/api.md)`;
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const messages = [];
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const commands = [];
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for (const source of sources) {
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const text = source.text();
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const commandStartRegex = /<!--\s*gen:([a-z-]+)\s*-->/ig;
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const commandEndRegex = /<!--\s*gen:stop\s*-->/ig;
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let start;
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while (start = commandStartRegex.exec(text)) { // eslint-disable-line no-cond-assign
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commandEndRegex.lastIndex = commandStartRegex.lastIndex;
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const end = commandEndRegex.exec(text);
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if (!end) {
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messages.push(Message.error(`Failed to find 'gen:stop' for command ${start[0]}`));
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return messages;
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}
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const name = start[1];
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const from = commandStartRegex.lastIndex;
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const to = end.index;
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const originalText = text.substring(from, to);
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commands.push({name, from, to, originalText, source});
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commandStartRegex.lastIndex = commandEndRegex.lastIndex;
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}
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}
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const changedSources = new Set();
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// Iterate commands in reverse order so that edits don't conflict.
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commands.sort((a, b) => b.from - a.from);
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for (const command of commands) {
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let newText = null;
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if (command.name === 'version')
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newText = isReleaseVersion ? 'v' + version : 'Tip-Of-Tree';
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else if (command.name === 'empty-if-release')
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newText = isReleaseVersion ? '' : command.originalText;
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else if (command.name === 'last-released-api')
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newText = lastReleasedAPILink;
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else if (command.name === 'toc')
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newText = generateTableOfContents(command.source.text().substring(command.to));
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if (newText === null)
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messages.push(Message.error(`Unknown command 'gen:${command.name}'`));
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else if (applyCommand(command, newText))
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changedSources.add(command.source);
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}
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for (const source of changedSources)
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messages.push(Message.warning(`GEN: updated ${source.projectPath()}`));
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return messages;
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};
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/**
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* @param {{name: string, from: number, to: number, source: !Source}} command
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* @param {string} editText
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* @return {boolean}
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*/
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function applyCommand(command, editText) {
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const text = command.source.text();
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const newText = text.substring(0, command.from) + editText + text.substring(command.to);
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return command.source.setText(newText);
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}
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function generateTableOfContents(mdText) {
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const ids = new Set();
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const titles = mdText.split('\n').map(line => line.trim()).filter(line => line.startsWith('#'));
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const tocEntries = [];
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for (const title of titles) {
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const [, nesting, name] = title.match(/^(#+)\s+(.*)$/);
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const id = name.trim().toLowerCase().replace(/\s/g, '-').replace(/[^-0-9a-zа-яё]/ig, '');
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let dedupId = id;
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let counter = 0;
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while (ids.has(dedupId))
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dedupId = id + '-' + (++counter);
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ids.add(dedupId);
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tocEntries.push({
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level: nesting.length,
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name,
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id: dedupId
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});
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}
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const minLevel = Math.min(...tocEntries.map(entry => entry.level));
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tocEntries.forEach(entry => entry.level -= minLevel);
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return '\n' + tocEntries.map(entry => {
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const prefix = entry.level % 2 === 0 ? '-' : '*';
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const padding = ' '.repeat(entry.level);
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return `${padding}${prefix} [${entry.name}](#${entry.id})`;
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}).join('\n') + '\n';
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}
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