polymer-analyzer
Version:
Static analysis for Web Components
109 lines • 4.48 kB
JavaScript
;
/**
* @license
* Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
* This code may only be used under the BSD style license found at
* http://polymer.github.io/LICENSE.txt
* The complete set of authors may be found at
* http://polymer.github.io/AUTHORS.txt
* The complete set of contributors may be found at
* http://polymer.github.io/CONTRIBUTORS.txt
* Code distributed by Google as part of the polymer project is also
* subject to an additional IP rights grant found at
* http://polymer.github.io/PATENTS.txt
*/
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : new P(function (resolve) { resolve(result.value); }).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
const fs = require("fs");
const pathlib = require("path");
const pathIsInside = require("path-is-inside");
const vscode_uri_1 = require("vscode-uri");
/**
* Resolves requests via the file system.
*/
class FsUrlLoader {
constructor(root = '') {
this.root = pathlib.resolve(root);
}
canLoad(url) {
const parsed = vscode_uri_1.default.parse(url);
return parsed.scheme === 'file' && !parsed.authority &&
pathIsInside(parsed.fsPath, this.root);
}
load(url) {
return new Promise((resolve, reject) => {
const result = this.getFilePath(url);
if (!result.successful) {
throw new Error(`FsUrlLoader can not load url ${JSON.stringify(url)} - ${result.error}`);
}
fs.readFile(result.value, 'utf8', (error, contents) => {
if (error) {
// Improve the error message of the most common error.
if (error.code === 'ENOENT') {
reject(new Error(`No such file: ${error.path}`));
}
reject(error);
}
else {
resolve(contents);
}
});
});
}
/**
* If successful, result.value will be the filesystem path that we would load
* the given url from.
*
* If unsuccessful, result.value will be an error message as a string.
*/
getFilePath(url) {
if (!url.startsWith('file://')) {
return { successful: false, error: 'Not a local file:// url.' };
}
if (!this.canLoad(url)) {
return {
successful: false,
error: `Path is not inside root directory: ${JSON.stringify(this.root)}`
};
}
const path = vscode_uri_1.default.parse(url).fsPath;
return { successful: true, value: path };
}
readDirectory(pathFromRoot, deep) {
return __awaiter(this, void 0, void 0, function* () {
const files = yield new Promise((resolve, reject) => {
fs.readdir(pathlib.join(this.root, pathFromRoot), (err, files) => err ? reject(err) : resolve(files));
});
const results = [];
const subDirResultPromises = [];
for (const basename of files) {
const file = pathlib.join(pathFromRoot, basename);
const stat = yield new Promise((resolve, reject) => fs.stat(pathlib.join(this.root, file), (err, stat) => err ? reject(err) : resolve(stat)));
if (stat.isDirectory()) {
if (deep) {
subDirResultPromises.push(this.readDirectory(file, deep));
}
}
else {
results.push(file);
}
}
const arraysOfFiles = yield Promise.all(subDirResultPromises);
for (const dirResults of arraysOfFiles) {
for (const file of dirResults) {
results.push(file);
}
}
return results;
});
}
}
exports.FsUrlLoader = FsUrlLoader;
//# sourceMappingURL=fs-url-loader.js.map