pdfjsbot
7 years ago
18 changed files with 1041 additions and 446 deletions
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/** |
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* @licstart The following is the entire license notice for the |
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* Javascript code in this page |
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* |
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* Copyright 2017 Mozilla Foundation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0
|
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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* @licend The above is the entire license notice for the |
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* Javascript code in this page |
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*/ |
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'use strict'; |
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|
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Object.defineProperty(exports, "__esModule", { |
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value: true |
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}); |
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var _slicedToArray = function () { function sliceIterator(arr, i) { var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"]) _i["return"](); } finally { if (_d) throw _e; } } return _arr; } return function (arr, i) { if (Array.isArray(arr)) { return arr; } else if (Symbol.iterator in Object(arr)) { return sliceIterator(arr, i); } else { throw new TypeError("Invalid attempt to destructure non-iterable instance"); } }; }(); |
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var _get = function get(object, property, receiver) { if (object === null) object = Function.prototype; var desc = Object.getOwnPropertyDescriptor(object, property); if (desc === undefined) { var parent = Object.getPrototypeOf(object); if (parent === null) { return undefined; } else { return get(parent, property, receiver); } } else if ("value" in desc) { return desc.value; } else { var getter = desc.get; if (getter === undefined) { return undefined; } return getter.call(receiver); } }; |
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var _createClass = 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); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }(); |
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function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; } |
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function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } |
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function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } |
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|
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var XMLParserErrorCode = { |
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NoError: 0, |
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EndOfDocument: -1, |
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UnterminatedCdat: -2, |
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UnterminatedXmlDeclaration: -3, |
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UnterminatedDoctypeDeclaration: -4, |
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UnterminatedComment: -5, |
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MalformedElement: -6, |
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OutOfMemory: -7, |
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UnterminatedAttributeValue: -8, |
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UnterminatedElement: -9, |
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ElementNeverBegun: -10 |
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}; |
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function isWhitespace(s, index) { |
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var ch = s[index]; |
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return ch === ' ' || ch === '\n' || ch === '\r' || ch === '\t'; |
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} |
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function isWhitespaceString(s) { |
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for (var i = 0, ii = s.length; i < ii; i++) { |
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if (!isWhitespace(s, i)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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|
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var XMLParserBase = function () { |
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function XMLParserBase() { |
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_classCallCheck(this, XMLParserBase); |
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} |
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_createClass(XMLParserBase, [{ |
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key: '_resolveEntities', |
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value: function _resolveEntities(s) { |
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return s.replace(/&([^;]+);/g, function (all, entity) { |
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if (entity.substring(0, 2) === '#x') { |
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return String.fromCharCode(parseInt(entity.substring(2), 16)); |
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} else if (entity.substring(0, 1) === '#') { |
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return String.fromCharCode(parseInt(entity.substring(1), 10)); |
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} |
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switch (entity) { |
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case 'lt': |
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return '<'; |
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case 'gt': |
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return '>'; |
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case 'amp': |
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return '&'; |
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case 'quot': |
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return '\"'; |
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} |
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return this.onResolveEntity(entity); |
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}); |
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} |
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}, { |
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key: '_parseContent', |
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value: function _parseContent(s, start) { |
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var pos = start, |
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name = void 0, |
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attributes = []; |
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function skipWs() { |
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while (pos < s.length && isWhitespace(s, pos)) { |
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++pos; |
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} |
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} |
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while (pos < s.length && !isWhitespace(s, pos) && s[pos] !== '>' && s[pos] !== '/') { |
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++pos; |
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} |
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name = s.substring(start, pos); |
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skipWs(); |
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while (pos < s.length && s[pos] !== '>' && s[pos] !== '/' && s[pos] !== '?') { |
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skipWs(); |
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var attrName = '', |
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attrValue = ''; |
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while (pos < s.length && !isWhitespace(s, pos) && s[pos] !== '=') { |
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attrName += s[pos]; |
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++pos; |
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} |
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skipWs(); |
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if (s[pos] !== '=') { |
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return null; |
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} |
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++pos; |
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skipWs(); |
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var attrEndChar = s[pos]; |
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if (attrEndChar !== '\"' && attrEndChar !== '\'') { |
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return null; |
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} |
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var attrEndIndex = s.indexOf(attrEndChar, ++pos); |
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if (attrEndIndex < 0) { |
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return null; |
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} |
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attrValue = s.substring(pos, attrEndIndex); |
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attributes.push({ |
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name: attrName, |
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value: this._resolveEntities(attrValue) |
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}); |
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pos = attrEndIndex + 1; |
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skipWs(); |
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} |
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return { |
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name: name, |
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attributes: attributes, |
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parsed: pos - start |
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}; |
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} |
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}, { |
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key: '_parseProcessingInstruction', |
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value: function _parseProcessingInstruction(s, start) { |
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var pos = start, |
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name = void 0, |
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value = void 0; |
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function skipWs() { |
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while (pos < s.length && isWhitespace(s, pos)) { |
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++pos; |
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} |
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} |
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while (pos < s.length && !isWhitespace(s, pos) && s[pos] !== '>' && s[pos] !== '/') { |
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++pos; |
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} |
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name = s.substring(start, pos); |
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skipWs(); |
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var attrStart = pos; |
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while (pos < s.length && (s[pos] !== '?' || s[pos + 1] !== '>')) { |
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++pos; |
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} |
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value = s.substring(attrStart, pos); |
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return { |
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name: name, |
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value: value, |
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parsed: pos - start |
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}; |
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} |
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}, { |
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key: 'parseXml', |
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value: function parseXml(s) { |
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var i = 0; |
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while (i < s.length) { |
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var ch = s[i]; |
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var j = i; |
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if (ch === '<') { |
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++j; |
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var ch2 = s[j]; |
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var q = void 0; |
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switch (ch2) { |
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case '/': |
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++j; |
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q = s.indexOf('>', j); |
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if (q < 0) { |
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this.onError(XMLParserErrorCode.UnterminatedElement); |
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return; |
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} |
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this.onEndElement(s.substring(j, q)); |
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j = q + 1; |
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break; |
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case '?': |
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++j; |
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var pi = this._parseProcessingInstruction(s, j); |
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if (s.substring(j + pi.parsed, j + pi.parsed + 2) !== '?>') { |
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this.onError(XMLParserErrorCode.UnterminatedXmlDeclaration); |
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return; |
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} |
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this.onPi(pi.name, pi.value); |
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j += pi.parsed + 2; |
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break; |
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case '!': |
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if (s.substring(j + 1, j + 3) === '--') { |
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q = s.indexOf('-->', j + 3); |
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if (q < 0) { |
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this.onError(XMLParserErrorCode.UnterminatedComment); |
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return; |
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} |
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this.onComment(s.substring(j + 3, q)); |
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j = q + 3; |
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} else if (s.substring(j + 1, j + 8) === '[CDATA[') { |
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q = s.indexOf(']]>', j + 8); |
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if (q < 0) { |
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this.onError(XMLParserErrorCode.UnterminatedCdat); |
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return; |
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} |
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this.onCdata(s.substring(j + 8, q)); |
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j = q + 3; |
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} else if (s.substring(j + 1, j + 8) === 'DOCTYPE') { |
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var q2 = s.indexOf('[', j + 8); |
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var complexDoctype = false; |
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q = s.indexOf('>', j + 8); |
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if (q < 0) { |
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this.onError(XMLParserErrorCode.UnterminatedDoctypeDeclaration); |
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return; |
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} |
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if (q2 > 0 && q > q2) { |
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q = s.indexOf(']>', j + 8); |
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if (q < 0) { |
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this.onError(XMLParserErrorCode.UnterminatedDoctypeDeclaration); |
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return; |
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} |
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complexDoctype = true; |
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} |
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var doctypeContent = s.substring(j + 8, q + (complexDoctype ? 1 : 0)); |
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this.onDoctype(doctypeContent); |
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j = q + (complexDoctype ? 2 : 1); |
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} else { |
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this.onError(XMLParserErrorCode.MalformedElement); |
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return; |
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} |
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break; |
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default: |
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var content = this._parseContent(s, j); |
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if (content === null) { |
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this.onError(XMLParserErrorCode.MalformedElement); |
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return; |
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} |
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var isClosed = false; |
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if (s.substring(j + content.parsed, j + content.parsed + 2) === '/>') { |
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isClosed = true; |
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} else if (s.substring(j + content.parsed, j + content.parsed + 1) !== '>') { |
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this.onError(XMLParserErrorCode.UnterminatedElement); |
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return; |
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} |
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this.onBeginElement(content.name, content.attributes, isClosed); |
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j += content.parsed + (isClosed ? 2 : 1); |
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break; |
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} |
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} else { |
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while (j < s.length && s[j] !== '<') { |
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j++; |
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} |
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var text = s.substring(i, j); |
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this.onText(this._resolveEntities(text)); |
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} |
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i = j; |
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} |
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} |
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}, { |
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key: 'onResolveEntity', |
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value: function onResolveEntity(name) { |
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return '&' + name + ';'; |
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} |
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}, { |
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key: 'onPi', |
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value: function onPi(name, value) {} |
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}, { |
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key: 'onComment', |
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value: function onComment(text) {} |
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}, { |
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key: 'onCdata', |
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value: function onCdata(text) {} |
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}, { |
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key: 'onDoctype', |
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value: function onDoctype(doctypeContent) {} |
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}, { |
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key: 'onText', |
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value: function onText(text) {} |
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}, { |
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key: 'onBeginElement', |
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value: function onBeginElement(name, attributes, isEmpty) {} |
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}, { |
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key: 'onEndElement', |
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value: function onEndElement(name) {} |
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}, { |
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key: 'onError', |
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value: function onError(code) {} |
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}]); |
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|
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return XMLParserBase; |
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}(); |
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|
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var SimpleDOMNode = function () { |
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function SimpleDOMNode(nodeName, nodeValue) { |
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_classCallCheck(this, SimpleDOMNode); |
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this.nodeName = nodeName; |
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this.nodeValue = nodeValue; |
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Object.defineProperty(this, 'parentNode', { |
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value: null, |
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writable: true |
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}); |
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} |
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|
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_createClass(SimpleDOMNode, [{ |
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key: 'hasChildNodes', |
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value: function hasChildNodes() { |
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return this.childNodes && this.childNodes.length > 0; |
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} |
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}, { |
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key: 'firstChild', |
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get: function get() { |
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return this.childNodes[0]; |
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} |
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}, { |
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key: 'nextSibling', |
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get: function get() { |
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var index = this.parentNode.childNodes.indexOf(this); |
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return this.parentNode.childNodes[index + 1]; |
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} |
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}, { |
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key: 'textContent', |
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get: function get() { |
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if (!this.childNodes) { |
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return this.nodeValue || ''; |
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} |
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return this.childNodes.map(function (child) { |
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return child.textContent; |
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}).join(''); |
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} |
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}]); |
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|
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return SimpleDOMNode; |
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}(); |
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|
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var SimpleXMLParser = function (_XMLParserBase) { |
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_inherits(SimpleXMLParser, _XMLParserBase); |
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|
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function SimpleXMLParser() { |
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_classCallCheck(this, SimpleXMLParser); |
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var _this = _possibleConstructorReturn(this, (SimpleXMLParser.__proto__ || Object.getPrototypeOf(SimpleXMLParser)).call(this)); |
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|
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_this._currentFragment = null; |
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_this._stack = null; |
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_this._errorCode = XMLParserErrorCode.NoError; |
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return _this; |
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} |
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|
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_createClass(SimpleXMLParser, [{ |
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key: 'parseFromString', |
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value: function parseFromString(data) { |
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this._currentFragment = []; |
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this._stack = []; |
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this._errorCode = XMLParserErrorCode.NoError; |
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this.parseXml(data); |
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if (this._errorCode !== XMLParserErrorCode.NoError) { |
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return undefined; |
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} |
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var _currentFragment = _slicedToArray(this._currentFragment, 1), |
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documentElement = _currentFragment[0]; |
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return { documentElement: documentElement }; |
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} |
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}, { |
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key: 'onResolveEntity', |
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value: function onResolveEntity(name) { |
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switch (name) { |
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case 'apos': |
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return '\''; |
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} |
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return _get(SimpleXMLParser.prototype.__proto__ || Object.getPrototypeOf(SimpleXMLParser.prototype), 'onResolveEntity', this).call(this, name); |
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} |
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}, { |
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key: 'onText', |
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value: function onText(text) { |
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if (isWhitespaceString(text)) { |
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return; |
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} |
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var node = new SimpleDOMNode('#text', text); |
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this._currentFragment.push(node); |
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} |
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}, { |
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key: 'onCdata', |
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value: function onCdata(text) { |
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var node = new SimpleDOMNode('#text', text); |
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this._currentFragment.push(node); |
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} |
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}, { |
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key: 'onBeginElement', |
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value: function onBeginElement(name, attributes, isEmpty) { |
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var node = new SimpleDOMNode(name); |
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node.childNodes = []; |
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this._currentFragment.push(node); |
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if (isEmpty) { |
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return; |
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} |
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this._stack.push(this._currentFragment); |
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this._currentFragment = node.childNodes; |
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} |
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}, { |
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key: 'onEndElement', |
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value: function onEndElement(name) { |
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this._currentFragment = this._stack.pop(); |
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var lastElement = this._currentFragment[this._currentFragment.length - 1]; |
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for (var i = 0, ii = lastElement.childNodes.length; i < ii; i++) { |
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lastElement.childNodes[i].parentNode = lastElement; |
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} |
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} |
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}, { |
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key: 'onError', |
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value: function onError(code) { |
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this._errorCode = code; |
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} |
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}]); |
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|
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return SimpleXMLParser; |
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}(XMLParserBase); |
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|
||||
exports.SimpleXMLParser = SimpleXMLParser; |
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