f33ce5fc2d
*Please note:* This is possibly bad/wrong in general, but I figured that submitting it for review wouldn't hurt. It seems that even Adobe Reader doesn't handle the non-ASCII characters that appear in some of the fields correctly, however it should be pretty easy to improve things on the PDF.js side.
81 lines
2.1 KiB
JavaScript
81 lines
2.1 KiB
JavaScript
/* Copyright 2022 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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import { stringToUTF8String, warn } from "../shared/util.js";
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import { parseXFAPath } from "./core_utils.js";
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import { SimpleXMLParser } from "./xml_parser.js";
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function decodeString(str) {
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try {
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return stringToUTF8String(str);
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} catch (ex) {
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warn(`UTF-8 decoding failed: "${ex}".`);
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return str;
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}
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}
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class DatasetXMLParser extends SimpleXMLParser {
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constructor(options) {
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super(options);
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this.node = null;
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}
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onEndElement(name) {
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const node = super.onEndElement(name);
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if (node && name === "xfa:datasets") {
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this.node = node;
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// We don't need anything else, so just kill the parser.
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throw new Error("Aborting DatasetXMLParser.");
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}
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}
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}
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class DatasetReader {
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constructor(data) {
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if (data.datasets) {
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this.node = new SimpleXMLParser({ hasAttributes: true }).parseFromString(
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data.datasets
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).documentElement;
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} else {
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const parser = new DatasetXMLParser({ hasAttributes: true });
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try {
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parser.parseFromString(data.xdp);
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} catch (_) {}
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this.node = parser.node;
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}
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}
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getValue(path) {
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if (!this.node || !path) {
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return "";
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}
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const node = this.node.searchNode(parseXFAPath(path), 0);
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if (!node) {
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return "";
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}
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const first = node.firstChild;
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if (first && first.nodeName === "value") {
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return node.children.map(child => decodeString(child.textContent));
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}
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return decodeString(node.textContent);
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}
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}
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export { DatasetReader };
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