angular-cn/tools/broccoli/broccoli-dartfmt.ts

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