All files / build/lib/reader utils.js

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
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
    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) : adopt(result.value).then(fulfilled, rejected); }
        step((generator = generator.apply(thisArg, _arguments || [])).next());
    });
};
var __generator = (this && this.__generator) || function (thisArg, body) {
    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
    function verb(n) { return function (v) { return step([n, v]); }; }
    function step(op) {
        if (f) throw new TypeError("Generator is already executing.");
        while (_) try {
            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
                case 4: _.label++; return { value: op[1], done: false };
                case 5: _.label++; y = op[1]; op = [0]; continue;
                case 7: op = _.ops.pop(); _.trys.pop(); continue;
                default:
                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
                    if (t[2]) _.ops.pop();
                    _.trys.pop(); continue;
            }
            op = body.call(thisArg, _);
        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
    }
};
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var fs_1 = __importDefault(require("fs"));
var path_1 = __importDefault(require("path"));
var zlib_1 = __importDefault(require("zlib"));
var file_type_1 = __importDefault(require("file-type"));
function copyFileAsync(src, dst) {
    return new Promise(function (resolve, reject) {
        fs_1.default.copyFile(src, dst, function (err) {
            if (err)
                reject(err);
            resolve();
        });
    });
}
exports.copyFileAsync = copyFileAsync;
function extractGz(src, dst) {
    // check if src file exists
    if (!fileExists(src)) {
        throw new Error('Invalid File Doesnt Exist');
    }
    return new Promise(function (resolve, reject) {
        try {
            // prepare streams
            var source = fs_1.default.createReadStream(src);
            var destination = fs_1.default.createWriteStream(dst);
            // extract the archive
            source.pipe(zlib_1.default.createGunzip()).pipe(destination);
            // callback on extract completion
            destination.on('close', resolve);
        }
        catch (err) {
            reject(err);
        }
    });
}
exports.extractGz = extractGz;
// checks whether a file exists
function fileExists(file) {
    try {
        return fs_1.default.statSync(file).isFile();
    }
    catch (err) {
        return false;
    }
}
function readFileAsync(file) {
    return new Promise(function (resolve, reject) {
        fs_1.default.readFile(file, function (err, data) {
            if (err)
                reject(err);
            resolve(data);
        });
    });
}
exports.readFileAsync = readFileAsync;
function getType(file) {
    return __awaiter(this, void 0, void 0, function () {
        var stream;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0: return [4 /*yield*/, file_type_1.default.stream(fs_1.default.createReadStream(file))];
                case 1:
                    stream = _a.sent();
                    return [2 /*return*/, stream.fileType];
            }
        });
    });
}
exports.getType = getType;
function changeExt(file, newExt) {
    var parsePath = path_1.default.parse(file);
    parsePath.ext = newExt;
    parsePath.base = parsePath.base.substring(0, parsePath.base.lastIndexOf(".")) + newExt;
    return path_1.default.format(parsePath);
}
exports.changeExt = changeExt;