109 lines
2.6 KiB
TypeScript
109 lines
2.6 KiB
TypeScript
/// <reference path="broccoli.d.ts" />
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/// <reference path="../typings/fs-extra/fs-extra.d.ts" />
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/// <reference path="../typings/node/node.d.ts" />
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import fs = require('fs');
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import fse = require('fs-extra');
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import path = require('path');
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import {TreeDiffer, DiffResult} from './tree-differ';
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let symlinkOrCopy = require('symlink-or-copy');
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export {DiffResult} from './tree-differ';
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/**
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* Makes writing diffing plugins easy.
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*
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* Factory method that takes a class that implements the DiffingBroccoliPlugin interface and returns
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* an instance of BroccoliTree.
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*
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* @param pluginClass
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* @returns {DiffingPlugin}
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*/
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export function wrapDiffingPlugin(pluginClass): DiffingPluginWrapperFactory {
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return function() { return new DiffingPluginWrapper(pluginClass, arguments); };
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}
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export interface DiffingBroccoliPlugin {
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rebuild(diff: DiffResult): (Promise<any>| void);
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cleanup ? () : void;
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}
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type DiffingPluginWrapperFactory = (inputTrees: (BroccoliTree | BroccoliTree[]), options?) =>
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BroccoliTree;
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class DiffingPluginWrapper implements BroccoliTree {
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treeDiffer: TreeDiffer;
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initialized = false;
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wrappedPlugin: DiffingBroccoliPlugin = null;
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inputTree = null;
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inputTrees = null;
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description = null;
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// props monkey-patched by broccoli builder:
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inputPath = null;
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cachePath = null;
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outputPath = null;
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constructor(private pluginClass, private wrappedPluginArguments) {
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if (Array.isArray(wrappedPluginArguments[0])) {
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this.inputTrees = wrappedPluginArguments[0];
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} else {
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this.inputTree = wrappedPluginArguments[0];
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}
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this.description = this.pluginClass.name;
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}
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rebuild() {
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try {
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let firstRun = !this.initialized;
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this.init();
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let diffResult = this.treeDiffer.diffTree();
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diffResult.log(!firstRun);
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var rebuildPromise = this.wrappedPlugin.rebuild(diffResult);
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if (rebuildPromise) {
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return (<Promise<any>>rebuildPromise).then(this.relinkOutputAndCachePaths.bind(this));
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}
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this.relinkOutputAndCachePaths();
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} catch (e) {
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e.message = `[${this.description}]: ${e.message}`;
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throw e;
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}
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}
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private relinkOutputAndCachePaths() {
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// just symlink the cache and output tree
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fs.rmdirSync(this.outputPath);
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symlinkOrCopy.sync(this.cachePath, this.outputPath);
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}
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private init() {
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if (!this.initialized) {
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this.initialized = true;
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this.treeDiffer = new TreeDiffer(this.inputPath);
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this.wrappedPlugin =
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new this.pluginClass(this.inputPath, this.cachePath, this.wrappedPluginArguments[1]);
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}
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}
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cleanup() {
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if (this.wrappedPlugin.cleanup) {
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this.wrappedPlugin.cleanup();
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}
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}
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}
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