1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
"use strict";
/**
* @license
* Copyright 2017 Palantir Technologies, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var fs = require("fs");
var Lint = require("../index");
var utils_1 = require("../utils");
var Rule = (function (_super) {
tslib_1.__extends(Rule, _super);
function Rule() {
return _super !== null && _super.apply(this, arguments) || this;
}
/* tslint:enable:object-literal-sort-keys */
Rule.FAILURE_STRING = function (actual) {
return "This file is encoded as " + showEncoding(actual) + " instead of UTF-8.";
};
Rule.prototype.apply = function (sourceFile) {
return this.applyWithFunction(sourceFile, walk);
};
return Rule;
}(Lint.Rules.AbstractRule));
/* tslint:disable:object-literal-sort-keys */
Rule.metadata = {
ruleName: "encoding",
description: "Enforces UTF-8 file encoding.",
optionsDescription: "Not configurable.",
options: null,
optionExamples: ["true"],
type: "style",
typescriptOnly: false,
};
exports.Rule = Rule;
function walk(ctx) {
var encoding = detectEncoding(ctx.sourceFile.fileName);
if (encoding !== "utf8") {
ctx.addFailure(0, 1, Rule.FAILURE_STRING(encoding));
}
}
function showEncoding(encoding) {
switch (encoding) {
case "utf8":
return "UTF-8";
case "utf8-bom":
return "UTF-8 with byte-order marker (BOM)";
case "utf16le":
return "UTF-16 (little-endian)";
case "utf16be":
return "UTF-16 (big-endian)";
}
}
function detectEncoding(fileName) {
var fd = fs.openSync(fileName, "r");
var maxBytesRead = 3; // Only need 3 bytes to detect the encoding.
var buffer = new Buffer(maxBytesRead);
var bytesRead = fs.readSync(fd, buffer, /*offset*/ 0, /*length*/ maxBytesRead, /*position*/ 0);
return utils_1.detectBufferEncoding(buffer, bytesRead);
}
|
