@angular/cdk
Version:
Angular Material Component Development Kit
90 lines • 12.5 kB
JavaScript
;
/**
* @license
* Copyright Google LLC All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.addBodyClass = exports.getHtmlHeadTagElement = exports.appendHtmlElementToHead = void 0;
const schematics_1 = require("@angular-devkit/schematics");
const parse5_element_1 = require("./parse5-element");
const parse5_1 = require("parse5");
/** Appends the given element HTML fragment to the `<head>` element of the specified HTML file. */
function appendHtmlElementToHead(host, htmlFilePath, elementHtml) {
const htmlFileBuffer = host.read(htmlFilePath);
if (!htmlFileBuffer) {
throw new schematics_1.SchematicsException(`Could not read file for path: ${htmlFilePath}`);
}
const htmlContent = htmlFileBuffer.toString();
if (htmlContent.includes(elementHtml)) {
return;
}
const headTag = getHtmlHeadTagElement(htmlContent);
if (!headTag) {
throw Error(`Could not find '<head>' element in HTML file: ${htmlFileBuffer}`);
}
// We always have access to the source code location here because the `getHeadTagElement`
// function explicitly has the `sourceCodeLocationInfo` option enabled.
const endTagOffset = headTag.sourceCodeLocation.endTag.startOffset;
const indentationOffset = (0, parse5_element_1.getChildElementIndentation)(headTag);
const insertion = `${' '.repeat(indentationOffset)}${elementHtml}`;
const recordedChange = host.beginUpdate(htmlFilePath).insertRight(endTagOffset, `${insertion}\n`);
host.commitUpdate(recordedChange);
}
exports.appendHtmlElementToHead = appendHtmlElementToHead;
/** Parses the given HTML file and returns the head element if available. */
function getHtmlHeadTagElement(htmlContent) {
return getElementByTagName('head', htmlContent);
}
exports.getHtmlHeadTagElement = getHtmlHeadTagElement;
/** Adds a class to the body of the document. */
function addBodyClass(host, htmlFilePath, className) {
const htmlFileBuffer = host.read(htmlFilePath);
if (!htmlFileBuffer) {
throw new schematics_1.SchematicsException(`Could not read file for path: ${htmlFilePath}`);
}
const htmlContent = htmlFileBuffer.toString();
const body = getElementByTagName('body', htmlContent);
if (!body) {
throw Error(`Could not find <body> element in HTML file: ${htmlFileBuffer}`);
}
const classAttribute = body.attrs.find(attribute => attribute.name === 'class');
if (classAttribute) {
const hasClass = classAttribute.value
.split(' ')
.map(part => part.trim())
.includes(className);
if (!hasClass) {
const classAttributeLocation = body.sourceCodeLocation.attrs.class;
const recordedChange = host
.beginUpdate(htmlFilePath)
.insertRight(classAttributeLocation.endOffset - 1, ` ${className}`);
host.commitUpdate(recordedChange);
}
}
else {
const recordedChange = host
.beginUpdate(htmlFilePath)
.insertRight(body.sourceCodeLocation.startTag.endOffset - 1, ` class="${className}"`);
host.commitUpdate(recordedChange);
}
}
exports.addBodyClass = addBodyClass;
/** Finds an element by its tag name. */
function getElementByTagName(tagName, htmlContent) {
const document = (0, parse5_1.parse)(htmlContent, { sourceCodeLocationInfo: true });
const nodeQueue = [...document.childNodes];
while (nodeQueue.length) {
const node = nodeQueue.shift();
if (node.nodeName.toLowerCase() === tagName) {
return node;
}
else if (node.childNodes) {
nodeQueue.push(...node.childNodes);
}
}
return null;
}
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* @license\n * Copyright Google LLC All Rights Reserved.\n *\n * Use of this source code is governed by an MIT-style license that can be\n * found in the LICENSE file at https://angular.io/license\n */\n\nimport {SchematicsException, Tree} from '@angular-devkit/schematics';\nimport {getChildElementIndentation} from './parse5-element';\nimport {Element, parse as parseHtml} from 'parse5';\n\n/** Appends the given element HTML fragment to the `<head>` element of the specified HTML file. */\nexport function appendHtmlElementToHead(host: Tree, htmlFilePath: string, elementHtml: string) {\n  const htmlFileBuffer = host.read(htmlFilePath);\n\n  if (!htmlFileBuffer) {\n    throw new SchematicsException(`Could not read file for path: ${htmlFilePath}`);\n  }\n\n  const htmlContent = htmlFileBuffer.toString();\n\n  if (htmlContent.includes(elementHtml)) {\n    return;\n  }\n\n  const headTag = getHtmlHeadTagElement(htmlContent);\n\n  if (!headTag) {\n    throw Error(`Could not find '<head>' element in HTML file: ${htmlFileBuffer}`);\n  }\n\n  // We always have access to the source code location here because the `getHeadTagElement`\n  // function explicitly has the `sourceCodeLocationInfo` option enabled.\n  const endTagOffset = headTag.sourceCodeLocation!.endTag.startOffset;\n  const indentationOffset = getChildElementIndentation(headTag);\n  const insertion = `${' '.repeat(indentationOffset)}${elementHtml}`;\n\n  const recordedChange = host.beginUpdate(htmlFilePath).insertRight(endTagOffset, `${insertion}\\n`);\n\n  host.commitUpdate(recordedChange);\n}\n\n/** Parses the given HTML file and returns the head element if available. */\nexport function getHtmlHeadTagElement(htmlContent: string): Element | null {\n  return getElementByTagName('head', htmlContent);\n}\n\n/** Adds a class to the body of the document. */\nexport function addBodyClass(host: Tree, htmlFilePath: string, className: string): void {\n  const htmlFileBuffer = host.read(htmlFilePath);\n\n  if (!htmlFileBuffer) {\n    throw new SchematicsException(`Could not read file for path: ${htmlFilePath}`);\n  }\n\n  const htmlContent = htmlFileBuffer.toString();\n  const body = getElementByTagName('body', htmlContent);\n\n  if (!body) {\n    throw Error(`Could not find <body> element in HTML file: ${htmlFileBuffer}`);\n  }\n\n  const classAttribute = body.attrs.find(attribute => attribute.name === 'class');\n\n  if (classAttribute) {\n    const hasClass = classAttribute.value\n      .split(' ')\n      .map(part => part.trim())\n      .includes(className);\n\n    if (!hasClass) {\n      const classAttributeLocation = body.sourceCodeLocation!.attrs.class;\n      const recordedChange = host\n        .beginUpdate(htmlFilePath)\n        .insertRight(classAttributeLocation.endOffset - 1, ` ${className}`);\n      host.commitUpdate(recordedChange);\n    }\n  } else {\n    const recordedChange = host\n      .beginUpdate(htmlFilePath)\n      .insertRight(body.sourceCodeLocation!.startTag.endOffset - 1, ` class=\"${className}\"`);\n    host.commitUpdate(recordedChange);\n  }\n}\n\n/** Finds an element by its tag name. */\nfunction getElementByTagName(tagName: string, htmlContent: string): Element | null {\n  const document = parseHtml(htmlContent, {sourceCodeLocationInfo: true});\n  const nodeQueue = [...document.childNodes];\n\n  while (nodeQueue.length) {\n    const node = nodeQueue.shift() as Element;\n\n    if (node.nodeName.toLowerCase() === tagName) {\n      return node;\n    } else if (node.childNodes) {\n      nodeQueue.push(...node.childNodes);\n    }\n  }\n\n  return null;\n}\n"]}