* render * configures the index.html into a webview panel * * React + webpack generate a number of files that are injected on build time * and must be accommodated for the webview using a vscode:// path. * * Modified paths include * - /static/js/x.chunk.js * - /static/js/main.chunk.js * - r
(panel: vscode.WebviewPanel, rootPath: string)
| 33 | * - manages the CSP policy for all the loaded files |
| 34 | */ |
| 35 | async function render(panel: vscode.WebviewPanel, rootPath: string): Promise<void> { |
| 36 | // generate vscode-resource build path uri |
| 37 | const createUri = (_filePath: string): any => { |
| 38 | const filePath = (_filePath.startsWith('vscode') ? _filePath.substr(16) : _filePath).replace('///', '\\') |
| 39 | |
| 40 | // @ts-ignore |
| 41 | return panel.webview.asWebviewUri(vscode.Uri.file(path.join(rootPath, filePath))) |
| 42 | } |
| 43 | |
| 44 | try { |
| 45 | // load copied index.html from web app build |
| 46 | let html = await asyncReadFile(path.join(rootPath, 'index.html'), 'utf8') |
| 47 | |
| 48 | // set base href at top of <head> |
| 49 | const baseHref = `${vscode.Uri.file(path.join(rootPath, 'build')).with({ scheme: 'vscode-resource' })}` |
| 50 | html = html.replace('<head>', `<head><base href="${baseHref}" />`) |
| 51 | |
| 52 | // used for CSP |
| 53 | const nonces: string[] = [] |
| 54 | const hashes: string[] = [] |
| 55 | |
| 56 | // fix paths for react static scripts to use vscode-resource paths |
| 57 | var jsBundleChunkRegex = /\/static\/js\/[\d].[^"]*\.js/g |
| 58 | var jsBundleChunk: RegExpExecArray | null = jsBundleChunkRegex.exec(html) |
| 59 | if (jsBundleChunk) { |
| 60 | const nonce: string = getNonce() |
| 61 | nonces.push(nonce) |
| 62 | const src = createUri(jsBundleChunk[0]) |
| 63 | // replace script src, add nonce |
| 64 | html = html.replace(jsBundleChunk[0], `${src}" nonce="${nonce}`) |
| 65 | } |
| 66 | |
| 67 | var mainBundleChunkRegex = /\/static\/js\/main.[^"]*\.js/g |
| 68 | var mainBundleChunk: RegExpExecArray | null = mainBundleChunkRegex.exec(html) |
| 69 | if (mainBundleChunk) { |
| 70 | const nonce: string = getNonce() |
| 71 | nonces.push(nonce) |
| 72 | const src = createUri(mainBundleChunk[0]) |
| 73 | // replace script src, add nonce |
| 74 | html = html.replace(mainBundleChunk[0], `${src}" nonce="${nonce}`) |
| 75 | } |
| 76 | |
| 77 | // support additional CSP exemptions when CodeRoad is embedded |
| 78 | if (CONTENT_SECURITY_POLICY_EXEMPTIONS && CONTENT_SECURITY_POLICY_EXEMPTIONS.length) { |
| 79 | for (const exemption of CONTENT_SECURITY_POLICY_EXEMPTIONS.split(' ')) { |
| 80 | // sha hashes should not be prefixed with 'nonce-' |
| 81 | if (exemption.match(/^sha/)) { |
| 82 | hashes.push(exemption) |
| 83 | } else { |
| 84 | nonces.push(exemption) |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | // note: file cannot be imported or results in esbuild error. Easier to read it. |
| 90 | let manifest |
| 91 | try { |
| 92 | const manifestPath = path.join(rootPath, 'asset-manifest.json') |
no test coverage detected