You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
666 lines
19 KiB
JavaScript
666 lines
19 KiB
JavaScript
/**
|
|
* @licstart The following is the entire license notice for the
|
|
* Javascript code in this page
|
|
*
|
|
* Copyright 2019 Mozilla Foundation
|
|
*
|
|
* 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.
|
|
*
|
|
* @licend The above is the entire license notice for the
|
|
* Javascript code in this page
|
|
*/
|
|
"use strict";
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.PDFNodeStream = void 0;
|
|
|
|
var _regenerator = _interopRequireDefault(require("@babel/runtime/regenerator"));
|
|
|
|
var _util = require("../shared/util");
|
|
|
|
var _network_utils = require("./network_utils");
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }
|
|
|
|
function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
|
|
|
|
function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }
|
|
|
|
function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }
|
|
|
|
function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }
|
|
|
|
function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }
|
|
|
|
function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }
|
|
|
|
function asyncGeneratorStep(gen, resolve, reject, _next, _throw, key, arg) { try { var info = gen[key](arg); var value = info.value; } catch (error) { reject(error); return; } if (info.done) { resolve(value); } else { Promise.resolve(value).then(_next, _throw); } }
|
|
|
|
function _asyncToGenerator(fn) { return function () { var self = this, args = arguments; return new Promise(function (resolve, reject) { var gen = fn.apply(self, args); function _next(value) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "next", value); } function _throw(err) { asyncGeneratorStep(gen, resolve, reject, _next, _throw, "throw", err); } _next(undefined); }); }; }
|
|
|
|
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
|
|
|
|
function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }
|
|
|
|
function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }
|
|
|
|
var fs = require('fs');
|
|
|
|
var http = require('http');
|
|
|
|
var https = require('https');
|
|
|
|
var url = require('url');
|
|
|
|
var fileUriRegex = /^file:\/\/\/[a-zA-Z]:\//;
|
|
|
|
function parseUrl(sourceUrl) {
|
|
var parsedUrl = url.parse(sourceUrl);
|
|
|
|
if (parsedUrl.protocol === 'file:' || parsedUrl.host) {
|
|
return parsedUrl;
|
|
}
|
|
|
|
if (/^[a-z]:[/\\]/i.test(sourceUrl)) {
|
|
return url.parse("file:///".concat(sourceUrl));
|
|
}
|
|
|
|
if (!parsedUrl.host) {
|
|
parsedUrl.protocol = 'file:';
|
|
}
|
|
|
|
return parsedUrl;
|
|
}
|
|
|
|
var PDFNodeStream =
|
|
/*#__PURE__*/
|
|
function () {
|
|
function PDFNodeStream(source) {
|
|
_classCallCheck(this, PDFNodeStream);
|
|
|
|
this.source = source;
|
|
this.url = parseUrl(source.url);
|
|
this.isHttp = this.url.protocol === 'http:' || this.url.protocol === 'https:';
|
|
this.isFsUrl = this.url.protocol === 'file:';
|
|
this.httpHeaders = this.isHttp && source.httpHeaders || {};
|
|
this._fullRequestReader = null;
|
|
this._rangeRequestReaders = [];
|
|
}
|
|
|
|
_createClass(PDFNodeStream, [{
|
|
key: "getFullReader",
|
|
value: function getFullReader() {
|
|
(0, _util.assert)(!this._fullRequestReader);
|
|
this._fullRequestReader = this.isFsUrl ? new PDFNodeStreamFsFullReader(this) : new PDFNodeStreamFullReader(this);
|
|
return this._fullRequestReader;
|
|
}
|
|
}, {
|
|
key: "getRangeReader",
|
|
value: function getRangeReader(start, end) {
|
|
if (end <= this._progressiveDataLength) {
|
|
return null;
|
|
}
|
|
|
|
var rangeReader = this.isFsUrl ? new PDFNodeStreamFsRangeReader(this, start, end) : new PDFNodeStreamRangeReader(this, start, end);
|
|
|
|
this._rangeRequestReaders.push(rangeReader);
|
|
|
|
return rangeReader;
|
|
}
|
|
}, {
|
|
key: "cancelAllRequests",
|
|
value: function cancelAllRequests(reason) {
|
|
if (this._fullRequestReader) {
|
|
this._fullRequestReader.cancel(reason);
|
|
}
|
|
|
|
var readers = this._rangeRequestReaders.slice(0);
|
|
|
|
readers.forEach(function (reader) {
|
|
reader.cancel(reason);
|
|
});
|
|
}
|
|
}, {
|
|
key: "_progressiveDataLength",
|
|
get: function get() {
|
|
return this._fullRequestReader ? this._fullRequestReader._loaded : 0;
|
|
}
|
|
}]);
|
|
|
|
return PDFNodeStream;
|
|
}();
|
|
|
|
exports.PDFNodeStream = PDFNodeStream;
|
|
|
|
var BaseFullReader =
|
|
/*#__PURE__*/
|
|
function () {
|
|
function BaseFullReader(stream) {
|
|
_classCallCheck(this, BaseFullReader);
|
|
|
|
this._url = stream.url;
|
|
this._done = false;
|
|
this._storedError = null;
|
|
this.onProgress = null;
|
|
var source = stream.source;
|
|
this._contentLength = source.length;
|
|
this._loaded = 0;
|
|
this._filename = null;
|
|
this._disableRange = source.disableRange || false;
|
|
this._rangeChunkSize = source.rangeChunkSize;
|
|
|
|
if (!this._rangeChunkSize && !this._disableRange) {
|
|
this._disableRange = true;
|
|
}
|
|
|
|
this._isStreamingSupported = !source.disableStream;
|
|
this._isRangeSupported = !source.disableRange;
|
|
this._readableStream = null;
|
|
this._readCapability = (0, _util.createPromiseCapability)();
|
|
this._headersCapability = (0, _util.createPromiseCapability)();
|
|
}
|
|
|
|
_createClass(BaseFullReader, [{
|
|
key: "read",
|
|
value: function () {
|
|
var _read = _asyncToGenerator(
|
|
/*#__PURE__*/
|
|
_regenerator["default"].mark(function _callee() {
|
|
var chunk, buffer;
|
|
return _regenerator["default"].wrap(function _callee$(_context) {
|
|
while (1) {
|
|
switch (_context.prev = _context.next) {
|
|
case 0:
|
|
_context.next = 2;
|
|
return this._readCapability.promise;
|
|
|
|
case 2:
|
|
if (!this._done) {
|
|
_context.next = 4;
|
|
break;
|
|
}
|
|
|
|
return _context.abrupt("return", {
|
|
value: undefined,
|
|
done: true
|
|
});
|
|
|
|
case 4:
|
|
if (!this._storedError) {
|
|
_context.next = 6;
|
|
break;
|
|
}
|
|
|
|
throw this._storedError;
|
|
|
|
case 6:
|
|
chunk = this._readableStream.read();
|
|
|
|
if (!(chunk === null)) {
|
|
_context.next = 10;
|
|
break;
|
|
}
|
|
|
|
this._readCapability = (0, _util.createPromiseCapability)();
|
|
return _context.abrupt("return", this.read());
|
|
|
|
case 10:
|
|
this._loaded += chunk.length;
|
|
|
|
if (this.onProgress) {
|
|
this.onProgress({
|
|
loaded: this._loaded,
|
|
total: this._contentLength
|
|
});
|
|
}
|
|
|
|
buffer = new Uint8Array(chunk).buffer;
|
|
return _context.abrupt("return", {
|
|
value: buffer,
|
|
done: false
|
|
});
|
|
|
|
case 14:
|
|
case "end":
|
|
return _context.stop();
|
|
}
|
|
}
|
|
}, _callee, this);
|
|
}));
|
|
|
|
function read() {
|
|
return _read.apply(this, arguments);
|
|
}
|
|
|
|
return read;
|
|
}()
|
|
}, {
|
|
key: "cancel",
|
|
value: function cancel(reason) {
|
|
if (!this._readableStream) {
|
|
this._error(reason);
|
|
|
|
return;
|
|
}
|
|
|
|
this._readableStream.destroy(reason);
|
|
}
|
|
}, {
|
|
key: "_error",
|
|
value: function _error(reason) {
|
|
this._storedError = reason;
|
|
|
|
this._readCapability.resolve();
|
|
}
|
|
}, {
|
|
key: "_setReadableStream",
|
|
value: function _setReadableStream(readableStream) {
|
|
var _this = this;
|
|
|
|
this._readableStream = readableStream;
|
|
readableStream.on('readable', function () {
|
|
_this._readCapability.resolve();
|
|
});
|
|
readableStream.on('end', function () {
|
|
readableStream.destroy();
|
|
_this._done = true;
|
|
|
|
_this._readCapability.resolve();
|
|
});
|
|
readableStream.on('error', function (reason) {
|
|
_this._error(reason);
|
|
});
|
|
|
|
if (!this._isStreamingSupported && this._isRangeSupported) {
|
|
this._error(new _util.AbortException('streaming is disabled'));
|
|
}
|
|
|
|
if (this._storedError) {
|
|
this._readableStream.destroy(this._storedError);
|
|
}
|
|
}
|
|
}, {
|
|
key: "headersReady",
|
|
get: function get() {
|
|
return this._headersCapability.promise;
|
|
}
|
|
}, {
|
|
key: "filename",
|
|
get: function get() {
|
|
return this._filename;
|
|
}
|
|
}, {
|
|
key: "contentLength",
|
|
get: function get() {
|
|
return this._contentLength;
|
|
}
|
|
}, {
|
|
key: "isRangeSupported",
|
|
get: function get() {
|
|
return this._isRangeSupported;
|
|
}
|
|
}, {
|
|
key: "isStreamingSupported",
|
|
get: function get() {
|
|
return this._isStreamingSupported;
|
|
}
|
|
}]);
|
|
|
|
return BaseFullReader;
|
|
}();
|
|
|
|
var BaseRangeReader =
|
|
/*#__PURE__*/
|
|
function () {
|
|
function BaseRangeReader(stream) {
|
|
_classCallCheck(this, BaseRangeReader);
|
|
|
|
this._url = stream.url;
|
|
this._done = false;
|
|
this._storedError = null;
|
|
this.onProgress = null;
|
|
this._loaded = 0;
|
|
this._readableStream = null;
|
|
this._readCapability = (0, _util.createPromiseCapability)();
|
|
var source = stream.source;
|
|
this._isStreamingSupported = !source.disableStream;
|
|
}
|
|
|
|
_createClass(BaseRangeReader, [{
|
|
key: "read",
|
|
value: function () {
|
|
var _read2 = _asyncToGenerator(
|
|
/*#__PURE__*/
|
|
_regenerator["default"].mark(function _callee2() {
|
|
var chunk, buffer;
|
|
return _regenerator["default"].wrap(function _callee2$(_context2) {
|
|
while (1) {
|
|
switch (_context2.prev = _context2.next) {
|
|
case 0:
|
|
_context2.next = 2;
|
|
return this._readCapability.promise;
|
|
|
|
case 2:
|
|
if (!this._done) {
|
|
_context2.next = 4;
|
|
break;
|
|
}
|
|
|
|
return _context2.abrupt("return", {
|
|
value: undefined,
|
|
done: true
|
|
});
|
|
|
|
case 4:
|
|
if (!this._storedError) {
|
|
_context2.next = 6;
|
|
break;
|
|
}
|
|
|
|
throw this._storedError;
|
|
|
|
case 6:
|
|
chunk = this._readableStream.read();
|
|
|
|
if (!(chunk === null)) {
|
|
_context2.next = 10;
|
|
break;
|
|
}
|
|
|
|
this._readCapability = (0, _util.createPromiseCapability)();
|
|
return _context2.abrupt("return", this.read());
|
|
|
|
case 10:
|
|
this._loaded += chunk.length;
|
|
|
|
if (this.onProgress) {
|
|
this.onProgress({
|
|
loaded: this._loaded
|
|
});
|
|
}
|
|
|
|
buffer = new Uint8Array(chunk).buffer;
|
|
return _context2.abrupt("return", {
|
|
value: buffer,
|
|
done: false
|
|
});
|
|
|
|
case 14:
|
|
case "end":
|
|
return _context2.stop();
|
|
}
|
|
}
|
|
}, _callee2, this);
|
|
}));
|
|
|
|
function read() {
|
|
return _read2.apply(this, arguments);
|
|
}
|
|
|
|
return read;
|
|
}()
|
|
}, {
|
|
key: "cancel",
|
|
value: function cancel(reason) {
|
|
if (!this._readableStream) {
|
|
this._error(reason);
|
|
|
|
return;
|
|
}
|
|
|
|
this._readableStream.destroy(reason);
|
|
}
|
|
}, {
|
|
key: "_error",
|
|
value: function _error(reason) {
|
|
this._storedError = reason;
|
|
|
|
this._readCapability.resolve();
|
|
}
|
|
}, {
|
|
key: "_setReadableStream",
|
|
value: function _setReadableStream(readableStream) {
|
|
var _this2 = this;
|
|
|
|
this._readableStream = readableStream;
|
|
readableStream.on('readable', function () {
|
|
_this2._readCapability.resolve();
|
|
});
|
|
readableStream.on('end', function () {
|
|
readableStream.destroy();
|
|
_this2._done = true;
|
|
|
|
_this2._readCapability.resolve();
|
|
});
|
|
readableStream.on('error', function (reason) {
|
|
_this2._error(reason);
|
|
});
|
|
|
|
if (this._storedError) {
|
|
this._readableStream.destroy(this._storedError);
|
|
}
|
|
}
|
|
}, {
|
|
key: "isStreamingSupported",
|
|
get: function get() {
|
|
return this._isStreamingSupported;
|
|
}
|
|
}]);
|
|
|
|
return BaseRangeReader;
|
|
}();
|
|
|
|
function createRequestOptions(url, headers) {
|
|
return {
|
|
protocol: url.protocol,
|
|
auth: url.auth,
|
|
host: url.hostname,
|
|
port: url.port,
|
|
path: url.path,
|
|
method: 'GET',
|
|
headers: headers
|
|
};
|
|
}
|
|
|
|
var PDFNodeStreamFullReader =
|
|
/*#__PURE__*/
|
|
function (_BaseFullReader) {
|
|
_inherits(PDFNodeStreamFullReader, _BaseFullReader);
|
|
|
|
function PDFNodeStreamFullReader(stream) {
|
|
var _this3;
|
|
|
|
_classCallCheck(this, PDFNodeStreamFullReader);
|
|
|
|
_this3 = _possibleConstructorReturn(this, _getPrototypeOf(PDFNodeStreamFullReader).call(this, stream));
|
|
|
|
var handleResponse = function handleResponse(response) {
|
|
if (response.statusCode === 404) {
|
|
var error = new _util.MissingPDFException("Missing PDF \"".concat(_this3._url, "\"."));
|
|
_this3._storedError = error;
|
|
|
|
_this3._headersCapability.reject(error);
|
|
|
|
return;
|
|
}
|
|
|
|
_this3._headersCapability.resolve();
|
|
|
|
_this3._setReadableStream(response);
|
|
|
|
var getResponseHeader = function getResponseHeader(name) {
|
|
return _this3._readableStream.headers[name.toLowerCase()];
|
|
};
|
|
|
|
var _validateRangeRequest = (0, _network_utils.validateRangeRequestCapabilities)({
|
|
getResponseHeader: getResponseHeader,
|
|
isHttp: stream.isHttp,
|
|
rangeChunkSize: _this3._rangeChunkSize,
|
|
disableRange: _this3._disableRange
|
|
}),
|
|
allowRangeRequests = _validateRangeRequest.allowRangeRequests,
|
|
suggestedLength = _validateRangeRequest.suggestedLength;
|
|
|
|
_this3._isRangeSupported = allowRangeRequests;
|
|
_this3._contentLength = suggestedLength || _this3._contentLength;
|
|
_this3._filename = (0, _network_utils.extractFilenameFromHeader)(getResponseHeader);
|
|
};
|
|
|
|
_this3._request = null;
|
|
|
|
if (_this3._url.protocol === 'http:') {
|
|
_this3._request = http.request(createRequestOptions(_this3._url, stream.httpHeaders), handleResponse);
|
|
} else {
|
|
_this3._request = https.request(createRequestOptions(_this3._url, stream.httpHeaders), handleResponse);
|
|
}
|
|
|
|
_this3._request.on('error', function (reason) {
|
|
_this3._storedError = reason;
|
|
|
|
_this3._headersCapability.reject(reason);
|
|
});
|
|
|
|
_this3._request.end();
|
|
|
|
return _this3;
|
|
}
|
|
|
|
return PDFNodeStreamFullReader;
|
|
}(BaseFullReader);
|
|
|
|
var PDFNodeStreamRangeReader =
|
|
/*#__PURE__*/
|
|
function (_BaseRangeReader) {
|
|
_inherits(PDFNodeStreamRangeReader, _BaseRangeReader);
|
|
|
|
function PDFNodeStreamRangeReader(stream, start, end) {
|
|
var _this4;
|
|
|
|
_classCallCheck(this, PDFNodeStreamRangeReader);
|
|
|
|
_this4 = _possibleConstructorReturn(this, _getPrototypeOf(PDFNodeStreamRangeReader).call(this, stream));
|
|
_this4._httpHeaders = {};
|
|
|
|
for (var property in stream.httpHeaders) {
|
|
var value = stream.httpHeaders[property];
|
|
|
|
if (typeof value === 'undefined') {
|
|
continue;
|
|
}
|
|
|
|
_this4._httpHeaders[property] = value;
|
|
}
|
|
|
|
_this4._httpHeaders['Range'] = "bytes=".concat(start, "-").concat(end - 1);
|
|
|
|
var handleResponse = function handleResponse(response) {
|
|
if (response.statusCode === 404) {
|
|
var error = new _util.MissingPDFException("Missing PDF \"".concat(_this4._url, "\"."));
|
|
_this4._storedError = error;
|
|
return;
|
|
}
|
|
|
|
_this4._setReadableStream(response);
|
|
};
|
|
|
|
_this4._request = null;
|
|
|
|
if (_this4._url.protocol === 'http:') {
|
|
_this4._request = http.request(createRequestOptions(_this4._url, _this4._httpHeaders), handleResponse);
|
|
} else {
|
|
_this4._request = https.request(createRequestOptions(_this4._url, _this4._httpHeaders), handleResponse);
|
|
}
|
|
|
|
_this4._request.on('error', function (reason) {
|
|
_this4._storedError = reason;
|
|
});
|
|
|
|
_this4._request.end();
|
|
|
|
return _this4;
|
|
}
|
|
|
|
return PDFNodeStreamRangeReader;
|
|
}(BaseRangeReader);
|
|
|
|
var PDFNodeStreamFsFullReader =
|
|
/*#__PURE__*/
|
|
function (_BaseFullReader2) {
|
|
_inherits(PDFNodeStreamFsFullReader, _BaseFullReader2);
|
|
|
|
function PDFNodeStreamFsFullReader(stream) {
|
|
var _this5;
|
|
|
|
_classCallCheck(this, PDFNodeStreamFsFullReader);
|
|
|
|
_this5 = _possibleConstructorReturn(this, _getPrototypeOf(PDFNodeStreamFsFullReader).call(this, stream));
|
|
var path = decodeURIComponent(_this5._url.path);
|
|
|
|
if (fileUriRegex.test(_this5._url.href)) {
|
|
path = path.replace(/^\//, '');
|
|
}
|
|
|
|
fs.lstat(path, function (error, stat) {
|
|
if (error) {
|
|
if (error.code === 'ENOENT') {
|
|
error = new _util.MissingPDFException("Missing PDF \"".concat(path, "\"."));
|
|
}
|
|
|
|
_this5._storedError = error;
|
|
|
|
_this5._headersCapability.reject(error);
|
|
|
|
return;
|
|
}
|
|
|
|
_this5._contentLength = stat.size;
|
|
|
|
_this5._setReadableStream(fs.createReadStream(path));
|
|
|
|
_this5._headersCapability.resolve();
|
|
});
|
|
return _this5;
|
|
}
|
|
|
|
return PDFNodeStreamFsFullReader;
|
|
}(BaseFullReader);
|
|
|
|
var PDFNodeStreamFsRangeReader =
|
|
/*#__PURE__*/
|
|
function (_BaseRangeReader2) {
|
|
_inherits(PDFNodeStreamFsRangeReader, _BaseRangeReader2);
|
|
|
|
function PDFNodeStreamFsRangeReader(stream, start, end) {
|
|
var _this6;
|
|
|
|
_classCallCheck(this, PDFNodeStreamFsRangeReader);
|
|
|
|
_this6 = _possibleConstructorReturn(this, _getPrototypeOf(PDFNodeStreamFsRangeReader).call(this, stream));
|
|
var path = decodeURIComponent(_this6._url.path);
|
|
|
|
if (fileUriRegex.test(_this6._url.href)) {
|
|
path = path.replace(/^\//, '');
|
|
}
|
|
|
|
_this6._setReadableStream(fs.createReadStream(path, {
|
|
start: start,
|
|
end: end - 1
|
|
}));
|
|
|
|
return _this6;
|
|
}
|
|
|
|
return PDFNodeStreamFsRangeReader;
|
|
}(BaseRangeReader); |