browserfs
Version:
A filesystem in your browser!
113 lines • 16.5 kB
JavaScript
;
var __extends = (this && this.__extends) || function (d, b) {
for (var p in b) if (b.hasOwnProperty(p)) d[p] = b[p];
function __() { this.constructor = d; }
d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
};
(function (ErrorCode) {
ErrorCode[ErrorCode["EPERM"] = 1] = "EPERM";
ErrorCode[ErrorCode["ENOENT"] = 2] = "ENOENT";
ErrorCode[ErrorCode["EIO"] = 5] = "EIO";
ErrorCode[ErrorCode["EBADF"] = 9] = "EBADF";
ErrorCode[ErrorCode["EACCES"] = 13] = "EACCES";
ErrorCode[ErrorCode["EBUSY"] = 16] = "EBUSY";
ErrorCode[ErrorCode["EEXIST"] = 17] = "EEXIST";
ErrorCode[ErrorCode["ENOTDIR"] = 20] = "ENOTDIR";
ErrorCode[ErrorCode["EISDIR"] = 21] = "EISDIR";
ErrorCode[ErrorCode["EINVAL"] = 22] = "EINVAL";
ErrorCode[ErrorCode["EFBIG"] = 27] = "EFBIG";
ErrorCode[ErrorCode["ENOSPC"] = 28] = "ENOSPC";
ErrorCode[ErrorCode["EROFS"] = 30] = "EROFS";
ErrorCode[ErrorCode["ENOTEMPTY"] = 39] = "ENOTEMPTY";
ErrorCode[ErrorCode["ENOTSUP"] = 95] = "ENOTSUP";
})(exports.ErrorCode || (exports.ErrorCode = {}));
var ErrorCode = exports.ErrorCode;
exports.ErrorStrings = {};
exports.ErrorStrings[ErrorCode.EPERM] = 'Operation not permitted.';
exports.ErrorStrings[ErrorCode.ENOENT] = 'No such file or directory.';
exports.ErrorStrings[ErrorCode.EIO] = 'Input/output error.';
exports.ErrorStrings[ErrorCode.EBADF] = 'Bad file descriptor.';
exports.ErrorStrings[ErrorCode.EACCES] = 'Permission denied.';
exports.ErrorStrings[ErrorCode.EBUSY] = 'Resource busy or locked.';
exports.ErrorStrings[ErrorCode.EEXIST] = 'File exists.';
exports.ErrorStrings[ErrorCode.ENOTDIR] = 'File is not a directory.';
exports.ErrorStrings[ErrorCode.EISDIR] = 'File is a directory.';
exports.ErrorStrings[ErrorCode.EINVAL] = 'Invalid argument.';
exports.ErrorStrings[ErrorCode.EFBIG] = 'File is too big.';
exports.ErrorStrings[ErrorCode.ENOSPC] = 'No space left on disk.';
exports.ErrorStrings[ErrorCode.EROFS] = 'Cannot modify a read-only file system.';
exports.ErrorStrings[ErrorCode.ENOTEMPTY] = 'Directory is not empty.';
exports.ErrorStrings[ErrorCode.ENOTSUP] = 'Operation is not supported.';
var ApiError = (function (_super) {
__extends(ApiError, _super);
function ApiError(type, message, path) {
if (message === void 0) { message = exports.ErrorStrings[type]; }
if (path === void 0) { path = null; }
_super.call(this, message);
this.syscall = "";
this.errno = type;
this.code = ErrorCode[type];
this.path = path;
this.stack = (new Error()).stack;
this.message = "Error: " + this.code + ": " + message + (this.path ? ", '" + this.path + "'" : '');
}
ApiError.prototype.toString = function () {
return this.message;
};
ApiError.prototype.toJSON = function () {
return {
errno: this.errno,
code: this.code,
path: this.path,
stack: this.stack,
message: this.message
};
};
ApiError.fromJSON = function (json) {
var err = new ApiError(0);
err.errno = json.errno;
err.code = json.code;
err.path = json.path;
err.stack = json.stack;
err.message = json.message;
return err;
};
ApiError.prototype.writeToBuffer = function (buffer, i) {
if (buffer === void 0) { buffer = new Buffer(this.bufferSize()); }
if (i === void 0) { i = 0; }
var bytesWritten = buffer.write(JSON.stringify(this.toJSON()), i + 4);
buffer.writeUInt32LE(bytesWritten, i);
return buffer;
};
ApiError.fromBuffer = function (buffer, i) {
if (i === void 0) { i = 0; }
return ApiError.fromJSON(JSON.parse(buffer.toString('utf8', i + 4, i + 4 + buffer.readUInt32LE(i))));
};
ApiError.prototype.bufferSize = function () {
return 4 + Buffer.byteLength(JSON.stringify(this.toJSON()));
};
ApiError.FileError = function (code, p) {
return new ApiError(code, exports.ErrorStrings[code], p);
};
ApiError.ENOENT = function (path) {
return this.FileError(ErrorCode.ENOENT, path);
};
ApiError.EEXIST = function (path) {
return this.FileError(ErrorCode.EEXIST, path);
};
ApiError.EISDIR = function (path) {
return this.FileError(ErrorCode.EISDIR, path);
};
ApiError.ENOTDIR = function (path) {
return this.FileError(ErrorCode.ENOTDIR, path);
};
ApiError.EPERM = function (path) {
return this.FileError(ErrorCode.EPERM, path);
};
ApiError.ENOTEMPTY = function (path) {
return this.FileError(ErrorCode.ENOTEMPTY, path);
};
return ApiError;
}(Error));
exports.ApiError = ApiError;
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Add more to this enum and ErrorStrings as they are\n * needed.\n * @url http://www.gnu.org/software/libc/manual/html_node/Error-Codes.html\n */\nexport enum ErrorCode {\n  EPERM     = 1,\n  ENOENT    = 2,\n  EIO       = 5,\n  EBADF     = 9,\n  EACCES    = 13,\n  EBUSY     = 16,\n  EEXIST    = 17,\n  ENOTDIR   = 20,\n  EISDIR    = 21,\n  EINVAL    = 22,\n  EFBIG     = 27,\n  ENOSPC    = 28,\n  EROFS     = 30,\n  ENOTEMPTY = 39,\n  ENOTSUP   = 95,\n}\n/**\n * Strings associated with each error code.\n */\nexport const ErrorStrings: {[code: string]: string; [code: number]: string;} = {};\nErrorStrings[ErrorCode.EPERM] = 'Operation not permitted.';\nErrorStrings[ErrorCode.ENOENT] = 'No such file or directory.';\nErrorStrings[ErrorCode.EIO] = 'Input/output error.';\nErrorStrings[ErrorCode.EBADF] = 'Bad file descriptor.';\nErrorStrings[ErrorCode.EACCES] = 'Permission denied.';\nErrorStrings[ErrorCode.EBUSY] = 'Resource busy or locked.';\nErrorStrings[ErrorCode.EEXIST] = 'File exists.';\nErrorStrings[ErrorCode.ENOTDIR] = 'File is not a directory.';\nErrorStrings[ErrorCode.EISDIR] = 'File is a directory.';\nErrorStrings[ErrorCode.EINVAL] = 'Invalid argument.';\nErrorStrings[ErrorCode.EFBIG] = 'File is too big.';\nErrorStrings[ErrorCode.ENOSPC] = 'No space left on disk.';\nErrorStrings[ErrorCode.EROFS] = 'Cannot modify a read-only file system.';\nErrorStrings[ErrorCode.ENOTEMPTY] = 'Directory is not empty.';\nErrorStrings[ErrorCode.ENOTSUP] = 'Operation is not supported.';\n\n/**\n * Represents a BrowserFS error. Passed back to applications after a failed\n * call to the BrowserFS API.\n * errno?: number;\n        code?: string;\n        path?: string;\n        syscall?: string;\n        stack?: string;\n */\nexport class ApiError extends Error implements NodeJS.ErrnoException {\n  public errno: ErrorCode;\n  public code: string;\n  public path: string;\n  // Unsupported.\n  public syscall: string = \"\";\n  public stack: string;\n\n  /**\n   * Represents a BrowserFS error. Passed back to applications after a failed\n   * call to the BrowserFS API.\n   *\n   * Error codes mirror those returned by regular Unix file operations, which is\n   * what Node returns.\n   * @constructor ApiError\n   * @param type The type of the error.\n   * @param [message] A descriptive error message.\n   */\n  constructor(type: ErrorCode, message: string = ErrorStrings[type], path: string = null) {\n    super(message);\n    this.errno = type;\n    this.code = ErrorCode[type];\n    this.path = path;\n    this.stack = (<any>new Error()).stack;\n    this.message = `Error: ${this.code}: ${message}${this.path ? `, '${this.path}'` : ''}`;\n  }\n\n  /**\n   * @return A friendly error message.\n   */\n  public toString(): string {\n    return this.message;\n  }\n\n  public toJSON(): any {\n    return {\n      errno: this.errno,\n      code: this.code,\n      path: this.path,\n      stack: this.stack,\n      message: this.message\n    };\n  }\n\n  public static fromJSON(json: any): ApiError {\n    var err = new ApiError(0);\n    err.errno = json.errno;\n    err.code = json.code;\n    err.path = json.path;\n    err.stack = json.stack;\n    err.message = json.message;\n    return err;\n  }\n\n  /**\n   * Writes the API error into a buffer.\n   */\n  public writeToBuffer(buffer: Buffer = new Buffer(this.bufferSize()), i: number = 0): Buffer {\n    var bytesWritten = buffer.write(JSON.stringify(this.toJSON()), i + 4);\n    buffer.writeUInt32LE(bytesWritten, i);\n    return buffer;\n  }\n\n  /**\n   * Creates an ApiError object from a buffer.\n   */\n  public static fromBuffer(buffer: Buffer, i: number = 0): ApiError {\n    return ApiError.fromJSON(JSON.parse(buffer.toString('utf8', i + 4, i + 4 + buffer.readUInt32LE(i))));\n  }\n\n  /**\n   * The size of the API error in buffer-form in bytes.\n   */\n  public bufferSize(): number {\n    // 4 bytes for string length.\n    return 4 + Buffer.byteLength(JSON.stringify(this.toJSON()));\n  }\n\n  public static FileError(code: ErrorCode, p: string): ApiError {\n    return new ApiError(code, ErrorStrings[code], p);\n  }\n  public static ENOENT(path: string): ApiError {\n    return this.FileError(ErrorCode.ENOENT, path);\n  }\n\n  public static EEXIST(path: string): ApiError {\n    return this.FileError(ErrorCode.EEXIST, path);\n  }\n\n  public static EISDIR(path: string): ApiError {\n    return this.FileError(ErrorCode.EISDIR, path);\n  }\n\n  public static ENOTDIR(path: string): ApiError {\n    return this.FileError(ErrorCode.ENOTDIR, path);\n  }\n\n  public static EPERM(path: string): ApiError {\n    return this.FileError(ErrorCode.EPERM, path);\n  }\n\n  public static ENOTEMPTY(path: string): ApiError {\n    return this.FileError(ErrorCode.ENOTEMPTY, path);\n  }\n}\n"]}