mirror of
https://github.com/microsoft/playwright.git
synced 2025-06-26 21:40:17 +00:00
482 lines
14 KiB
JavaScript
482 lines
14 KiB
JavaScript
/**
|
|
* Copyright (c) Microsoft Corporation.
|
|
*
|
|
* 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
|
|
*
|
|
* http://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.
|
|
*/
|
|
|
|
// @ts-check
|
|
|
|
/** @typedef {{
|
|
* type: string,
|
|
* text?: string,
|
|
* children?: MarkdownNode[],
|
|
* codeLang?: string,
|
|
* }} MarkdownBaseNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'text',
|
|
* text: string,
|
|
* }} MarkdownTextNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'h0' | 'h1' | 'h2' | 'h3' | 'h4',
|
|
* text: string,
|
|
* children: MarkdownNode[]
|
|
* }} MarkdownHeaderNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'li',
|
|
* text: string,
|
|
* liType: 'default' | 'bullet' | 'ordinal',
|
|
* children: MarkdownNode[]
|
|
* }} MarkdownLiNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'code',
|
|
* lines: string[],
|
|
* codeLang: string,
|
|
* }} MarkdownCodeNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'note',
|
|
* text: string,
|
|
* noteType: string,
|
|
* }} MarkdownNoteNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'null',
|
|
* }} MarkdownNullNode */
|
|
|
|
/** @typedef {MarkdownBaseNode & {
|
|
* type: 'properties',
|
|
* lines: string[],
|
|
* }} MarkdownPropsNode */
|
|
|
|
/** @typedef {MarkdownTextNode | MarkdownLiNode | MarkdownCodeNode | MarkdownNoteNode | MarkdownHeaderNode | MarkdownNullNode | MarkdownPropsNode } MarkdownNode */
|
|
|
|
function flattenWrappedLines(content) {
|
|
const inLines = content.replace(/\r\n/g, '\n').split('\n');
|
|
let inCodeBlock = false;
|
|
const outLines = [];
|
|
let outLineTokens = [];
|
|
for (const line of inLines) {
|
|
const trimmedLine = line.trim();
|
|
const singleLineExpression = line.startsWith('#');
|
|
const codeBlockBoundary = trimmedLine.startsWith('```') || trimmedLine.startsWith('---') || trimmedLine.startsWith(':::');
|
|
let flushLastParagraph = !trimmedLine
|
|
|| trimmedLine.startsWith('1.')
|
|
|| trimmedLine.startsWith('<')
|
|
|| trimmedLine.startsWith('>')
|
|
|| trimmedLine.startsWith('|')
|
|
|| trimmedLine.startsWith('-')
|
|
|| trimmedLine.startsWith('*')
|
|
|| line.match(/\[[^\]]+\]:.*/)
|
|
|| singleLineExpression;
|
|
if (codeBlockBoundary) {
|
|
inCodeBlock = !inCodeBlock;
|
|
flushLastParagraph = true;
|
|
}
|
|
if (flushLastParagraph && outLineTokens.length) {
|
|
outLines.push(outLineTokens.join(' '));
|
|
outLineTokens = [];
|
|
}
|
|
if (inCodeBlock || singleLineExpression || codeBlockBoundary)
|
|
outLines.push(line);
|
|
else if (trimmedLine)
|
|
outLineTokens.push(outLineTokens.length ? line.trim() : line);
|
|
}
|
|
if (outLineTokens.length)
|
|
outLines.push(outLineTokens.join(' '));
|
|
return outLines;
|
|
}
|
|
|
|
/**
|
|
* @param {string[]} lines
|
|
*/
|
|
function buildTree(lines) {
|
|
/** @type {MarkdownNode} */
|
|
const root = {
|
|
type: 'h0',
|
|
text: '<root>',
|
|
children: []
|
|
};
|
|
|
|
/** @type {MarkdownNode[]} */
|
|
const headerStack = [root];
|
|
|
|
/** @type {{ indent: string, node: MarkdownNode }[]} */
|
|
let sectionStack = [];
|
|
|
|
/**
|
|
* @param {string} indent
|
|
* @param {MarkdownNode} node
|
|
*/
|
|
const appendNode = (indent, node) => {
|
|
while (sectionStack.length && sectionStack[0].indent.length >= indent.length)
|
|
sectionStack.shift();
|
|
const parentNode = sectionStack.length ? sectionStack[0].node :headerStack[0];
|
|
if (!parentNode.children)
|
|
parentNode.children = [];
|
|
parentNode.children.push(node);
|
|
if (node.type === 'li')
|
|
sectionStack.unshift({ indent, node });
|
|
};
|
|
|
|
for (let i = 0; i < lines.length; ++i) {
|
|
let line = lines[i];
|
|
|
|
// Headers form hierarchy.
|
|
const header = line.match(/^(#+)/);
|
|
if (header) {
|
|
const h = header[1].length;
|
|
const node = /** @type {MarkdownNode} */({ type: 'h' + h, text: line.substring(h + 1), children: [] });
|
|
|
|
while (true) {
|
|
const lastH = +headerStack[0].type.substring(1);
|
|
if (h <= lastH)
|
|
headerStack.shift();
|
|
else
|
|
break;
|
|
}
|
|
/** @type {MarkdownNode[]}*/(headerStack[0].children).push(node);
|
|
headerStack.unshift(node);
|
|
continue;
|
|
}
|
|
|
|
// Remaining items respect indent-based nesting.
|
|
const [, indent, content] = /** @type {string[]} */ (line.match('^([ ]*)(.*)'));
|
|
if (content.startsWith('```')) {
|
|
/** @type {MarkdownNode} */
|
|
const node = {
|
|
type: 'code',
|
|
lines: [],
|
|
codeLang: content.substring(3)
|
|
};
|
|
line = lines[++i];
|
|
while (!line.trim().startsWith('```')) {
|
|
if (line && !line.startsWith(indent)) {
|
|
const from = Math.max(0, i - 5)
|
|
const to = Math.min(lines.length, from + 10);
|
|
const snippet = lines.slice(from, to);
|
|
throw new Error(`Bad code block: ${snippet.join('\n')}`);
|
|
}
|
|
if (line)
|
|
line = line.substring(indent.length);
|
|
node.lines.push(line);
|
|
line = lines[++i];
|
|
}
|
|
appendNode(indent, node);
|
|
continue;
|
|
}
|
|
|
|
if (content.startsWith(':::')) {
|
|
/** @type {MarkdownNode} */
|
|
const node = /** @type {MarkdownNoteNode} */ ({
|
|
type: 'note',
|
|
noteType: content.substring(3)
|
|
});
|
|
line = lines[++i];
|
|
const tokens = [];
|
|
while (!line.trim().startsWith(':::')) {
|
|
if (!line.startsWith(indent)) {
|
|
const from = Math.max(0, i - 5)
|
|
const to = Math.min(lines.length, from + 10);
|
|
const snippet = lines.slice(from, to);
|
|
throw new Error(`Bad comment block: ${snippet.join('\n')}`);
|
|
}
|
|
tokens.push(line.substring(indent.length));
|
|
line = lines[++i];
|
|
}
|
|
node.text = tokens.join(' ');
|
|
appendNode(indent, node);
|
|
continue;
|
|
}
|
|
|
|
if (content.startsWith('---')) {
|
|
/** @type {MarkdownNode} */
|
|
const node = {
|
|
type: 'properties',
|
|
lines: [],
|
|
};
|
|
line = lines[++i];
|
|
while (!line.trim().startsWith('---')) {
|
|
if (!line.startsWith(indent))
|
|
throw new Error('Bad header block ' + line);
|
|
node.lines.push(line.substring(indent.length));
|
|
line = lines[++i];
|
|
}
|
|
appendNode(indent, node);
|
|
continue;
|
|
}
|
|
|
|
const liType = content.match(/^(-|1.|\*) /);
|
|
const node = /** @type {MarkdownNode} */({ type: 'text', text: content });
|
|
if (liType) {
|
|
const liNode = /** @type {MarkdownLiNode} */(node);
|
|
liNode.type = 'li';
|
|
liNode.text = content.substring(liType[0].length);
|
|
if (content.startsWith('1.'))
|
|
liNode.liType = 'ordinal';
|
|
else if (content.startsWith('*'))
|
|
liNode.liType = 'bullet';
|
|
else
|
|
liNode.liType = 'default';
|
|
}
|
|
const match = node.text?.match(/\*\*langs: (.*)\*\*(.*)/);
|
|
if (match) {
|
|
node.codeLang = match[1];
|
|
node.text = match[2];
|
|
}
|
|
appendNode(indent, node);
|
|
}
|
|
return root.children;
|
|
}
|
|
|
|
/**
|
|
* @param {string} content
|
|
*/
|
|
function parse(content) {
|
|
return buildTree(flattenWrappedLines(content));
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode[]} nodes
|
|
* @param {number=} maxColumns
|
|
*/
|
|
function render(nodes, maxColumns) {
|
|
const result = [];
|
|
let lastNode;
|
|
for (let node of nodes) {
|
|
if (node.type === 'null')
|
|
continue;
|
|
innerRenderMdNode('', node, /** @type {MarkdownNode} */ (lastNode), result, maxColumns);
|
|
lastNode = node;
|
|
}
|
|
return result.join('\n');
|
|
}
|
|
|
|
/**
|
|
* @param {string} indent
|
|
* @param {MarkdownNode} node
|
|
* @param {MarkdownNode} lastNode
|
|
* @param {number=} maxColumns
|
|
* @param {string[]} result
|
|
*/
|
|
function innerRenderMdNode(indent, node, lastNode, result, maxColumns) {
|
|
const newLine = () => {
|
|
if (result[result.length - 1] !== '')
|
|
result.push('');
|
|
};
|
|
|
|
if (node.type.startsWith('h')) {
|
|
const headerNode = /** @type {MarkdownHeaderNode} */ (node);
|
|
newLine();
|
|
const depth = +node.type.substring(1);
|
|
result.push(`${'#'.repeat(depth)} ${headerNode.text}`);
|
|
let lastNode = node;
|
|
for (const child of node.children || []) {
|
|
innerRenderMdNode('', child, lastNode, result, maxColumns);
|
|
lastNode = child;
|
|
}
|
|
}
|
|
|
|
if (node.type === 'text') {
|
|
const bothTables = node.text.startsWith('|') && lastNode && lastNode.type === 'text' && lastNode.text.startsWith('|');
|
|
const bothGen = node.text.startsWith('<!--') && lastNode && lastNode.type === 'text' && lastNode.text.startsWith('<!--');
|
|
const bothComments = node.text.startsWith('>') && lastNode && lastNode.type === 'text' && lastNode.text.startsWith('>');
|
|
const bothLinks = node.text.match(/\[[^\]]+\]:/) && lastNode && lastNode.type === 'text' && lastNode.text.match(/\[[^\]]+\]:/);
|
|
if (!bothTables && !bothGen && !bothComments && !bothLinks && lastNode && lastNode.text)
|
|
newLine();
|
|
for (const line of node.text.split('\n'))
|
|
result.push(wrapText(line, maxColumns, indent));
|
|
return;
|
|
}
|
|
|
|
if (node.type === 'code') {
|
|
newLine();
|
|
if (process.env.API_JSON_MODE)
|
|
result.push(`${indent}\`\`\`${node.codeLang}`);
|
|
else
|
|
result.push(`${indent}\`\`\`${codeLangToHighlighter(node.codeLang)}`);
|
|
for (const line of node.lines)
|
|
result.push(indent + line);
|
|
result.push(`${indent}\`\`\``);
|
|
newLine();
|
|
return;
|
|
}
|
|
|
|
if (node.type === 'note') {
|
|
newLine();
|
|
result.push(`${indent}:::${node.noteType}`);
|
|
result.push(`${wrapText(node.text, maxColumns, indent)}`);
|
|
result.push(`${indent}:::`);
|
|
newLine();
|
|
return;
|
|
}
|
|
|
|
if (node.type === 'properties') {
|
|
result.push(`${indent}---`);
|
|
for (const line of node.lines)
|
|
result.push(indent + line);
|
|
result.push(`${indent}---`);
|
|
newLine();
|
|
return;
|
|
}
|
|
|
|
if (node.type === 'li') {
|
|
let char;
|
|
switch (node.liType) {
|
|
case 'bullet': char = '*'; break;
|
|
case 'default': char = '-'; break;
|
|
case 'ordinal': char = '1.'; break;
|
|
}
|
|
result.push(`${wrapText(node.text, maxColumns, `${indent}${char} `)}`);
|
|
const newIndent = indent + ' '.repeat(char.length + 1);
|
|
for (const child of node.children || []) {
|
|
innerRenderMdNode(newIndent, child, lastNode, result, maxColumns);
|
|
lastNode = child;
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
*/
|
|
function tokenizeNoBreakLinks(text) {
|
|
const links = [];
|
|
// Don't wrap simple links with spaces.
|
|
text = text.replace(/\[[^\]]+\]/g, match => {
|
|
links.push(match);
|
|
return `[${links.length - 1}]`;
|
|
});
|
|
return text.split(' ').map(c => c.replace(/\[(\d+)\]/g, (_, p1) => links[+p1]));
|
|
}
|
|
|
|
/**
|
|
* @param {string} text
|
|
* @param {number=} maxColumns
|
|
* @param {string=} prefix
|
|
*/
|
|
function wrapText(text, maxColumns = 0, prefix = '') {
|
|
if (!maxColumns)
|
|
return prefix + text;
|
|
if (text.trim().startsWith('|'))
|
|
return prefix + text;
|
|
const indent = ' '.repeat(prefix.length);
|
|
const lines = [];
|
|
maxColumns -= indent.length;
|
|
const words = tokenizeNoBreakLinks(text);
|
|
let line = '';
|
|
for (const word of words) {
|
|
if (line.length && line.length + word.length < maxColumns) {
|
|
line += ' ' + word;
|
|
} else {
|
|
if (line)
|
|
lines.push(line);
|
|
line = (lines.length ? indent : prefix) + word;
|
|
}
|
|
}
|
|
if (line)
|
|
lines.push(line);
|
|
return lines.join('\n');
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode} node
|
|
*/
|
|
function clone(node) {
|
|
const copy = { ...node };
|
|
copy.children = copy.children ? copy.children.map(c => clone(c)) : undefined;
|
|
return copy;
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode[]} nodes
|
|
* @param {function(MarkdownNode, number): void} visitor
|
|
*/
|
|
function visitAll(nodes, visitor) {
|
|
for (const node of nodes)
|
|
visit(node, visitor);
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode} node
|
|
* @param {function(MarkdownNode, number): void} visitor
|
|
*/
|
|
function visit(node, visitor, depth = 0) {
|
|
visitor(node, depth);
|
|
for (const n of node.children || [])
|
|
visit(n, visitor, depth + 1);
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode[]} nodes
|
|
* @param {boolean=} h3
|
|
* @returns {string}
|
|
*/
|
|
function generateToc(nodes, h3) {
|
|
const result = [];
|
|
visitAll(nodes, (node, depth) => {
|
|
if (node.type === 'h1' || node.type === 'h2' || (h3 && node.type === 'h3')) {
|
|
let link = node.text.toLowerCase();
|
|
link = link.replace(/[ ]+/g, '-');
|
|
link = link.replace(/[^\w-_]/g, '');
|
|
result.push(`${' '.repeat(depth * 2)}- [${node.text}](#${link})`);
|
|
}
|
|
});
|
|
return result.join('\n');
|
|
}
|
|
|
|
/**
|
|
* @param {MarkdownNode[]} nodes
|
|
* @param {string} language
|
|
* @return {MarkdownNode[]}
|
|
*/
|
|
function filterNodesForLanguage(nodes, language) {
|
|
const result = nodes.filter(node => {
|
|
if (!node.children)
|
|
return true;
|
|
for (let i = 0; i < node.children.length; i++) {
|
|
const child = node.children[i];
|
|
if (child.type !== 'li' || child.liType !== 'bullet' || !child.text.startsWith('langs:'))
|
|
continue;
|
|
const onlyText = child.text.substring('langs:'.length);
|
|
if (!onlyText)
|
|
return true;
|
|
const only = onlyText.split(',').map(l => l.trim());
|
|
node.children.splice(i, 1);
|
|
return only.includes(language);
|
|
}
|
|
return true;
|
|
});
|
|
result.forEach(n => {
|
|
if (!n.children)
|
|
return;
|
|
n.children = filterNodesForLanguage(n.children, language);
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* @param {string} codeLang
|
|
* @return {string}
|
|
*/
|
|
function codeLangToHighlighter(codeLang) {
|
|
const [lang] = codeLang.split(' ');
|
|
if (lang === 'python')
|
|
return 'py';
|
|
return lang;
|
|
}
|
|
|
|
module.exports = { parse, render, clone, visitAll, visit, generateToc, filterNodesForLanguage, codeLangToHighlighter };
|