82 lines
2.5 KiB
TypeScript
82 lines
2.5 KiB
TypeScript
/// <reference path="../typings/node/node.d.ts" />
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/// <reference path="../typings/fs-extra/fs-extra.d.ts" />
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import fse = require('fs-extra');
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import path = require('path');
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import {wrapDiffingPlugin, DiffingBroccoliPlugin, DiffResult} from './diffing-broccoli-plugin';
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var spawn = require('child_process').spawn;
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var exec = require('child_process').exec;
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function processToPromise(process) {
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return new Promise(function(resolve, reject) {
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process.on('close', function(code) {
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if (code) {
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reject(code);
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} else {
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resolve();
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}
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});
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});
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}
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class DartFormatter implements DiffingBroccoliPlugin {
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private DARTFMT: string;
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private verbose: boolean;
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constructor(public inputPath: string, public cachePath: string, options) {
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if (!options.dartSDK) throw new Error("Missing Dart SDK");
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this.DARTFMT = options.dartSDK.DARTFMT;
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this.verbose = options.logs.dartfmt;
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}
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rebuild(treeDiff: DiffResult): Promise<any> {
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let args = ['-w'];
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treeDiff.changedPaths.forEach((changedFile) => {
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let sourcePath = path.join(this.inputPath, changedFile);
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let destPath = path.join(this.cachePath, changedFile);
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if (/\.dart$/.test(changedFile)) args.push(destPath);
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fse.copySync(sourcePath, destPath);
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});
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treeDiff.removedPaths.forEach((removedFile) => {
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let destPath = path.join(this.cachePath, removedFile);
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fse.removeSync(destPath);
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});
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if (args.length < 1) {
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return Promise.resolve();
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}
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return new Promise((resolve, reject) => {
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exec(this.DARTFMT + ' ' + args.join(' '), (err, stdout, stderr) => {
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if (this.verbose) {
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console.log(stdout);
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}
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if (err) {
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console.error(shortenFormatterOutput(stderr));
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reject('Formatting failed.');
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} else {
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resolve();
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}
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});
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});
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}
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}
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export default wrapDiffingPlugin(DartFormatter);
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var ARROW_LINE = /^(\s+)\^+/;
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var BEFORE_CHARS = 15;
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var stripAnsi = require('strip-ansi');
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function shortenFormatterOutput(formatterOutput) {
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var lines = formatterOutput.split('\n');
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var match, line;
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for (var i = 0; i < lines.length; i += 1) {
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line = lines[i];
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if (match = stripAnsi(line).match(ARROW_LINE)) {
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let leadingWhitespace = match[1].length;
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let leadingCodeChars = Math.min(leadingWhitespace, BEFORE_CHARS);
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lines[i] = line.substr(leadingWhitespace - leadingCodeChars);
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lines[i - 1] = lines[i - 1].substr(leadingWhitespace - leadingCodeChars, 80) + '…';
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}
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}
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return lines.join('\n');
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}
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