84 lines
2.1 KiB
TypeScript
84 lines
2.1 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {
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BaseException,
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Path,
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getSystemPath,
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join,
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normalize,
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virtualFs
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} from '@angular-devkit/core';
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import { FileReplacement } from '../browser/schema';
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export class MissingFileReplacementException extends BaseException {
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constructor(path: String) {
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super(`The ${path} path in file replacements does not exist.`);
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}
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}
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export interface NormalizedFileReplacement {
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replace: Path;
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with: Path;
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}
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export function normalizeFileReplacements(
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fileReplacements: FileReplacement[],
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host: virtualFs.SyncDelegateHost,
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root: Path
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): NormalizedFileReplacement[] {
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if (fileReplacements.length === 0) {
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return [];
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}
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const normalizedReplacement = fileReplacements.map(replacement =>
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normalizeFileReplacement(replacement, root)
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);
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for (const { replace, with: replacementWith } of normalizedReplacement) {
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if (!host.exists(replacementWith)) {
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throw new MissingFileReplacementException(getSystemPath(replacementWith));
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}
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if (!host.exists(replace)) {
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throw new MissingFileReplacementException(getSystemPath(replace));
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}
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}
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return normalizedReplacement;
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}
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function normalizeFileReplacement(
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fileReplacement: FileReplacement,
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root?: Path
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): NormalizedFileReplacement {
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let replacePath: Path;
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let withPath: Path;
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if (fileReplacement.src && fileReplacement.replaceWith) {
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replacePath = normalize(fileReplacement.src);
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withPath = normalize(fileReplacement.replaceWith);
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} else if (fileReplacement.replace && fileReplacement.with) {
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replacePath = normalize(fileReplacement.replace);
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withPath = normalize(fileReplacement.with);
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} else {
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throw new Error(
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`Invalid file replacement: ${JSON.stringify(fileReplacement)}`
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);
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}
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// TODO: For 7.x should this only happen if not absolute?
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if (root) {
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replacePath = join(root, replacePath);
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}
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if (root) {
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withPath = join(root, withPath);
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}
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return { replace: replacePath, with: withPath };
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}
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