50 lines
1.5 KiB
TypeScript
50 lines
1.5 KiB
TypeScript
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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var _ = require('lodash');
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import {wrapDiffingPlugin, DiffingBroccoliPlugin, DiffResult} from './diffing-broccoli-plugin';
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interface LodashRendererOptions {
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encoding?: string;
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context?: any;
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// files option unsupported --- use Funnel on inputTree instead.
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files?: string[];
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}
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const kDefaultOptions: LodashRendererOptions = {
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encoding: 'utf-8',
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context: {},
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files: []
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};
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/**
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* Intercepts each changed file and replaces its contents with
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* the associated changes.
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*/
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export class LodashRenderer implements DiffingBroccoliPlugin {
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constructor(private inputPath, private cachePath,
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private options: LodashRendererOptions = kDefaultOptions) {}
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rebuild(treeDiff: DiffResult) {
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let {encoding = 'utf-8', context = {}} = this.options;
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let processFile = (relativePath) => {
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let sourceFilePath = path.join(this.inputPath, relativePath);
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let destFilePath = path.join(this.cachePath, relativePath);
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let content = fs.readFileSync(sourceFilePath, {encoding});
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let transformedContent = _.template(content)(context);
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fse.outputFileSync(destFilePath, transformedContent);
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};
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let removeFile = (relativePath) => {
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let destFilePath = path.join(this.cachePath, relativePath);
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fs.unlinkSync(destFilePath);
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};
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treeDiff.addedPaths.concat(treeDiff.changedPaths).forEach(processFile);
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treeDiff.removedPaths.forEach(removeFile);
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}
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}
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export default wrapDiffingPlugin(LodashRenderer);
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