| 1 | "use strict";
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| 2 | var __extends = (this && this.__extends) || (function () {
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| 3 | var extendStatics = function (d, b) {
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| 4 | extendStatics = Object.setPrototypeOf ||
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| 5 | ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
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| 6 | function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
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| 7 | return extendStatics(d, b);
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| 8 | };
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| 9 | return function (d, b) {
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| 10 | if (typeof b !== "function" && b !== null)
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| 11 | throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
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| 12 | extendStatics(d, b);
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| 13 | function __() { this.constructor = d; }
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| 14 | d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
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| 15 | };
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| 16 | })();
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| 17 | Object.defineProperty(exports, "__esModule", { value: true });
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| 18 | exports.File = exports.Link = exports.Node = exports.SEP = void 0;
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| 19 | var process_1 = require("./process");
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| 20 | var buffer_1 = require("./internal/buffer");
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| 21 | var constants_1 = require("./constants");
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| 22 | var events_1 = require("events");
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| 23 | var Stats_1 = require("./Stats");
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| 24 | var S_IFMT = constants_1.constants.S_IFMT, S_IFDIR = constants_1.constants.S_IFDIR, S_IFREG = constants_1.constants.S_IFREG, S_IFLNK = constants_1.constants.S_IFLNK, O_APPEND = constants_1.constants.O_APPEND;
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| 25 | exports.SEP = '/';
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| 26 | /**
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| 27 | * Node in a file system (like i-node, v-node).
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| 28 | */
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| 29 | var Node = /** @class */ (function (_super) {
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| 30 | __extends(Node, _super);
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| 31 | function Node(ino, perm) {
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| 32 | if (perm === void 0) { perm = 438; }
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| 33 | var _this = _super.call(this) || this;
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| 34 | // User ID and group ID.
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| 35 | _this.uid = process_1.default.getuid();
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| 36 | _this.gid = process_1.default.getgid();
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| 37 | _this.atime = new Date();
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| 38 | _this.mtime = new Date();
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| 39 | _this.ctime = new Date();
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| 40 | _this.perm = 438; // Permissions `chmod`, `fchmod`
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| 41 | _this.mode = S_IFREG; // S_IFDIR, S_IFREG, etc.. (file by default?)
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| 42 | // Number of hard links pointing at this Node.
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| 43 | _this.nlink = 1;
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| 44 | _this.perm = perm;
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| 45 | _this.mode |= perm;
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| 46 | _this.ino = ino;
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| 47 | return _this;
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| 48 | }
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| 49 | Node.prototype.getString = function (encoding) {
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| 50 | if (encoding === void 0) { encoding = 'utf8'; }
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| 51 | return this.getBuffer().toString(encoding);
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| 52 | };
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| 53 | Node.prototype.setString = function (str) {
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| 54 | // this.setBuffer(bufferFrom(str, 'utf8'));
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| 55 | this.buf = (0, buffer_1.bufferFrom)(str, 'utf8');
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| 56 | this.touch();
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| 57 | };
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| 58 | Node.prototype.getBuffer = function () {
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| 59 | if (!this.buf)
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| 60 | this.setBuffer((0, buffer_1.bufferAllocUnsafe)(0));
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| 61 | return (0, buffer_1.bufferFrom)(this.buf); // Return a copy.
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| 62 | };
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| 63 | Node.prototype.setBuffer = function (buf) {
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| 64 | this.buf = (0, buffer_1.bufferFrom)(buf); // Creates a copy of data.
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| 65 | this.touch();
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| 66 | };
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| 67 | Node.prototype.getSize = function () {
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| 68 | return this.buf ? this.buf.length : 0;
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| 69 | };
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| 70 | Node.prototype.setModeProperty = function (property) {
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| 71 | this.mode = (this.mode & ~S_IFMT) | property;
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| 72 | };
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| 73 | Node.prototype.setIsFile = function () {
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| 74 | this.setModeProperty(S_IFREG);
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| 75 | };
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| 76 | Node.prototype.setIsDirectory = function () {
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| 77 | this.setModeProperty(S_IFDIR);
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| 78 | };
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| 79 | Node.prototype.setIsSymlink = function () {
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| 80 | this.setModeProperty(S_IFLNK);
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| 81 | };
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| 82 | Node.prototype.isFile = function () {
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| 83 | return (this.mode & S_IFMT) === S_IFREG;
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| 84 | };
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| 85 | Node.prototype.isDirectory = function () {
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| 86 | return (this.mode & S_IFMT) === S_IFDIR;
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| 87 | };
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| 88 | Node.prototype.isSymlink = function () {
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| 89 | // return !!this.symlink;
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| 90 | return (this.mode & S_IFMT) === S_IFLNK;
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| 91 | };
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| 92 | Node.prototype.makeSymlink = function (steps) {
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| 93 | this.symlink = steps;
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| 94 | this.setIsSymlink();
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| 95 | };
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| 96 | Node.prototype.write = function (buf, off, len, pos) {
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| 97 | if (off === void 0) { off = 0; }
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| 98 | if (len === void 0) { len = buf.length; }
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| 99 | if (pos === void 0) { pos = 0; }
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| 100 | if (!this.buf)
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| 101 | this.buf = (0, buffer_1.bufferAllocUnsafe)(0);
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| 102 | if (pos + len > this.buf.length) {
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| 103 | var newBuf = (0, buffer_1.bufferAllocUnsafe)(pos + len);
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| 104 | this.buf.copy(newBuf, 0, 0, this.buf.length);
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| 105 | this.buf = newBuf;
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| 106 | }
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| 107 | buf.copy(this.buf, pos, off, off + len);
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| 108 | this.touch();
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| 109 | return len;
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| 110 | };
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| 111 | // Returns the number of bytes read.
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| 112 | Node.prototype.read = function (buf, off, len, pos) {
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| 113 | if (off === void 0) { off = 0; }
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| 114 | if (len === void 0) { len = buf.byteLength; }
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| 115 | if (pos === void 0) { pos = 0; }
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| 116 | if (!this.buf)
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| 117 | this.buf = (0, buffer_1.bufferAllocUnsafe)(0);
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| 118 | var actualLen = len;
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| 119 | if (actualLen > buf.byteLength) {
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| 120 | actualLen = buf.byteLength;
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| 121 | }
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| 122 | if (actualLen + pos > this.buf.length) {
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| 123 | actualLen = this.buf.length - pos;
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| 124 | }
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| 125 | this.buf.copy(buf, off, pos, pos + actualLen);
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| 126 | return actualLen;
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| 127 | };
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| 128 | Node.prototype.truncate = function (len) {
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| 129 | if (len === void 0) { len = 0; }
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| 130 | if (!len)
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| 131 | this.buf = (0, buffer_1.bufferAllocUnsafe)(0);
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| 132 | else {
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| 133 | if (!this.buf)
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| 134 | this.buf = (0, buffer_1.bufferAllocUnsafe)(0);
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| 135 | if (len <= this.buf.length) {
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| 136 | this.buf = this.buf.slice(0, len);
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| 137 | }
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| 138 | else {
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| 139 | var buf = (0, buffer_1.bufferAllocUnsafe)(0);
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| 140 | this.buf.copy(buf);
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| 141 | buf.fill(0, len);
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| 142 | }
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| 143 | }
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| 144 | this.touch();
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| 145 | };
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| 146 | Node.prototype.chmod = function (perm) {
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| 147 | this.perm = perm;
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| 148 | this.mode = (this.mode & ~511) | perm;
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| 149 | this.touch();
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| 150 | };
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| 151 | Node.prototype.chown = function (uid, gid) {
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| 152 | this.uid = uid;
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| 153 | this.gid = gid;
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| 154 | this.touch();
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| 155 | };
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| 156 | Node.prototype.touch = function () {
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| 157 | this.mtime = new Date();
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| 158 | this.emit('change', this);
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| 159 | };
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| 160 | Node.prototype.canRead = function (uid, gid) {
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| 161 | if (uid === void 0) { uid = process_1.default.getuid(); }
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| 162 | if (gid === void 0) { gid = process_1.default.getgid(); }
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| 163 | if (this.perm & 4 /* IROTH */) {
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| 164 | return true;
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| 165 | }
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| 166 | if (gid === this.gid) {
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| 167 | if (this.perm & 32 /* IRGRP */) {
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| 168 | return true;
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| 169 | }
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| 170 | }
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| 171 | if (uid === this.uid) {
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| 172 | if (this.perm & 256 /* IRUSR */) {
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| 173 | return true;
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| 174 | }
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| 175 | }
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| 176 | return false;
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| 177 | };
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| 178 | Node.prototype.canWrite = function (uid, gid) {
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| 179 | if (uid === void 0) { uid = process_1.default.getuid(); }
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| 180 | if (gid === void 0) { gid = process_1.default.getgid(); }
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| 181 | if (this.perm & 2 /* IWOTH */) {
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| 182 | return true;
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| 183 | }
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| 184 | if (gid === this.gid) {
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| 185 | if (this.perm & 16 /* IWGRP */) {
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| 186 | return true;
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| 187 | }
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| 188 | }
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| 189 | if (uid === this.uid) {
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| 190 | if (this.perm & 128 /* IWUSR */) {
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| 191 | return true;
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| 192 | }
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| 193 | }
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| 194 | return false;
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| 195 | };
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| 196 | Node.prototype.del = function () {
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| 197 | this.emit('delete', this);
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| 198 | };
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| 199 | Node.prototype.toJSON = function () {
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| 200 | return {
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| 201 | ino: this.ino,
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| 202 | uid: this.uid,
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| 203 | gid: this.gid,
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| 204 | atime: this.atime.getTime(),
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| 205 | mtime: this.mtime.getTime(),
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| 206 | ctime: this.ctime.getTime(),
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| 207 | perm: this.perm,
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| 208 | mode: this.mode,
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| 209 | nlink: this.nlink,
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| 210 | symlink: this.symlink,
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| 211 | data: this.getString(),
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| 212 | };
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| 213 | };
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| 214 | return Node;
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| 215 | }(events_1.EventEmitter));
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| 216 | exports.Node = Node;
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| 217 | /**
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| 218 | * Represents a hard link that points to an i-node `node`.
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| 219 | */
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| 220 | var Link = /** @class */ (function (_super) {
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| 221 | __extends(Link, _super);
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| 222 | function Link(vol, parent, name) {
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| 223 | var _this = _super.call(this) || this;
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| 224 | _this.children = {};
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| 225 | // Path to this node as Array: ['usr', 'bin', 'node'].
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| 226 | _this.steps = [];
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| 227 | // "i-node" number of the node.
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| 228 | _this.ino = 0;
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| 229 | // Number of children.
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| 230 | _this.length = 0;
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| 231 | _this.vol = vol;
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| 232 | _this.parent = parent;
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| 233 | _this.steps = parent ? parent.steps.concat([name]) : [name];
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| 234 | return _this;
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| 235 | }
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| 236 | Link.prototype.setNode = function (node) {
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| 237 | this.node = node;
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| 238 | this.ino = node.ino;
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| 239 | };
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| 240 | Link.prototype.getNode = function () {
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| 241 | return this.node;
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| 242 | };
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| 243 | Link.prototype.createChild = function (name, node) {
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| 244 | if (node === void 0) { node = this.vol.createNode(); }
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| 245 | var link = new Link(this.vol, this, name);
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| 246 | link.setNode(node);
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| 247 | if (node.isDirectory()) {
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| 248 | // link.setChild('.', link);
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| 249 | // link.getNode().nlink++;
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| 250 | // link.setChild('..', this);
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| 251 | // this.getNode().nlink++;
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| 252 | }
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| 253 | this.setChild(name, link);
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| 254 | return link;
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| 255 | };
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| 256 | Link.prototype.setChild = function (name, link) {
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| 257 | if (link === void 0) { link = new Link(this.vol, this, name); }
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| 258 | this.children[name] = link;
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| 259 | link.parent = this;
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| 260 | this.length++;
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| 261 | this.emit('child:add', link, this);
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| 262 | return link;
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| 263 | };
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| 264 | Link.prototype.deleteChild = function (link) {
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| 265 | delete this.children[link.getName()];
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| 266 | this.length--;
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| 267 | this.emit('child:delete', link, this);
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| 268 | };
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| 269 | Link.prototype.getChild = function (name) {
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| 270 | if (Object.hasOwnProperty.call(this.children, name)) {
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| 271 | return this.children[name];
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| 272 | }
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| 273 | };
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| 274 | Link.prototype.getPath = function () {
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| 275 | return this.steps.join(exports.SEP);
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| 276 | };
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| 277 | Link.prototype.getName = function () {
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| 278 | return this.steps[this.steps.length - 1];
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| 279 | };
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| 280 | // del() {
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| 281 | // const parent = this.parent;
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| 282 | // if(parent) {
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| 283 | // parent.deleteChild(link);
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| 284 | // }
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| 285 | // this.parent = null;
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| 286 | // this.vol = null;
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| 287 | // }
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| 288 | /**
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| 289 | * Walk the tree path and return the `Link` at that location, if any.
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| 290 | * @param steps {string[]} Desired location.
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| 291 | * @param stop {number} Max steps to go into.
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| 292 | * @param i {number} Current step in the `steps` array.
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| 293 | *
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| 294 | * @return {Link|null}
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| 295 | */
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| 296 | Link.prototype.walk = function (steps, stop, i) {
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| 297 | if (stop === void 0) { stop = steps.length; }
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| 298 | if (i === void 0) { i = 0; }
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| 299 | if (i >= steps.length)
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| 300 | return this;
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| 301 | if (i >= stop)
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| 302 | return this;
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| 303 | var step = steps[i];
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| 304 | var link = this.getChild(step);
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| 305 | if (!link)
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| 306 | return null;
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| 307 | return link.walk(steps, stop, i + 1);
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| 308 | };
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| 309 | Link.prototype.toJSON = function () {
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| 310 | return {
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| 311 | steps: this.steps,
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| 312 | ino: this.ino,
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| 313 | children: Object.keys(this.children),
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| 314 | };
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| 315 | };
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| 316 | return Link;
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| 317 | }(events_1.EventEmitter));
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| 318 | exports.Link = Link;
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| 319 | /**
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| 320 | * Represents an open file (file descriptor) that points to a `Link` (Hard-link) and a `Node`.
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| 321 | */
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| 322 | var File = /** @class */ (function () {
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| 323 | /**
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| 324 | * Open a Link-Node pair. `node` is provided separately as that might be a different node
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| 325 | * rather the one `link` points to, because it might be a symlink.
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| 326 | * @param link
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| 327 | * @param node
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| 328 | * @param flags
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| 329 | * @param fd
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| 330 | */
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| 331 | function File(link, node, flags, fd) {
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| 332 | /**
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| 333 | * A cursor/offset position in a file, where data will be written on write.
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| 334 | * User can "seek" this position.
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| 335 | */
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| 336 | this.position = 0;
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| 337 | this.link = link;
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| 338 | this.node = node;
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| 339 | this.flags = flags;
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| 340 | this.fd = fd;
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| 341 | }
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| 342 | File.prototype.getString = function (encoding) {
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| 343 | if (encoding === void 0) { encoding = 'utf8'; }
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| 344 | return this.node.getString();
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| 345 | };
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| 346 | File.prototype.setString = function (str) {
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| 347 | this.node.setString(str);
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| 348 | };
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| 349 | File.prototype.getBuffer = function () {
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| 350 | return this.node.getBuffer();
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| 351 | };
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| 352 | File.prototype.setBuffer = function (buf) {
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| 353 | this.node.setBuffer(buf);
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| 354 | };
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| 355 | File.prototype.getSize = function () {
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| 356 | return this.node.getSize();
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| 357 | };
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| 358 | File.prototype.truncate = function (len) {
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| 359 | this.node.truncate(len);
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| 360 | };
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| 361 | File.prototype.seekTo = function (position) {
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| 362 | this.position = position;
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| 363 | };
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| 364 | File.prototype.stats = function () {
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| 365 | return Stats_1.default.build(this.node);
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| 366 | };
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| 367 | File.prototype.write = function (buf, offset, length, position) {
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| 368 | if (offset === void 0) { offset = 0; }
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| 369 | if (length === void 0) { length = buf.length; }
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| 370 | if (typeof position !== 'number')
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| 371 | position = this.position;
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| 372 | if (this.flags & O_APPEND)
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| 373 | position = this.getSize();
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| 374 | var bytes = this.node.write(buf, offset, length, position);
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| 375 | this.position = position + bytes;
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| 376 | return bytes;
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| 377 | };
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| 378 | File.prototype.read = function (buf, offset, length, position) {
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| 379 | if (offset === void 0) { offset = 0; }
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| 380 | if (length === void 0) { length = buf.byteLength; }
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| 381 | if (typeof position !== 'number')
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| 382 | position = this.position;
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| 383 | var bytes = this.node.read(buf, offset, length, position);
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| 384 | this.position = position + bytes;
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| 385 | return bytes;
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| 386 | };
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| 387 | File.prototype.chmod = function (perm) {
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| 388 | this.node.chmod(perm);
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| 389 | };
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| 390 | File.prototype.chown = function (uid, gid) {
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| 391 | this.node.chown(uid, gid);
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| 392 | };
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| 393 | return File;
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| 394 | }());
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| 395 | exports.File = File;
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