a9ce4e8417
This moves/exposes the `URL` polyfill similarily to the existing `ReadableStream` polyfill, rather than exposing it globally, to avoid interfering with any "outside" code. Both the `URL` and `ReadableStream` polyfills are now exposed on the `pdfjsLib` object, such that they are accessible to the viewer components. Furthermore, the `no-restricted-globals` ESLint rule is also enabled to prevent accidental usage of the native `URL`/`ReadableStream` implementations directly in the `src/` and `web/` folders; see also https://eslint.org/docs/rules/no-restricted-globals Addresses the remaining TODO in https://github.com/mozilla/pdf.js/projects/6
628 lines
18 KiB
JavaScript
628 lines
18 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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// Polyfill obtained from: https://github.com/Polymer/URL
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(function URLConstructorClosure() {
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'use strict';
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var relative = Object.create(null);
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relative['ftp'] = 21;
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relative['file'] = 0;
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relative['gopher'] = 70;
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relative['http'] = 80;
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relative['https'] = 443;
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relative['ws'] = 80;
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relative['wss'] = 443;
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var relativePathDotMapping = Object.create(null);
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relativePathDotMapping['%2e'] = '.';
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relativePathDotMapping['.%2e'] = '..';
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relativePathDotMapping['%2e.'] = '..';
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relativePathDotMapping['%2e%2e'] = '..';
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function isRelativeScheme(scheme) {
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return relative[scheme] !== undefined;
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}
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function invalid() {
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clear.call(this);
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this._isInvalid = true;
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}
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function IDNAToASCII(h) {
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if (h === '') {
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invalid.call(this);
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}
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// XXX
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return h.toLowerCase();
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}
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function percentEscape(c) {
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var unicode = c.charCodeAt(0);
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if (unicode > 0x20 &&
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unicode < 0x7F &&
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// " # < > ? `
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[0x22, 0x23, 0x3C, 0x3E, 0x3F, 0x60].indexOf(unicode) === -1
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) {
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return c;
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}
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return encodeURIComponent(c);
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}
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function percentEscapeQuery(c) {
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// XXX This actually needs to encode c using encoding and then
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// convert the bytes one-by-one.
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var unicode = c.charCodeAt(0);
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if (unicode > 0x20 &&
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unicode < 0x7F &&
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// " # < > ` (do not escape '?')
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[0x22, 0x23, 0x3C, 0x3E, 0x60].indexOf(unicode) === -1
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) {
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return c;
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}
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return encodeURIComponent(c);
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}
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var EOF, ALPHA = /[a-zA-Z]/,
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ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/;
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function parse(input, stateOverride, base) {
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function err(message) {
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errors.push(message);
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}
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var state = stateOverride || 'scheme start',
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cursor = 0,
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buffer = '',
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seenAt = false,
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seenBracket = false,
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errors = [];
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loop: while ((input[cursor - 1] !== EOF || cursor === 0) &&
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!this._isInvalid) {
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var c = input[cursor];
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switch (state) {
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case 'scheme start':
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if (c && ALPHA.test(c)) {
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buffer += c.toLowerCase(); // ASCII-safe
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state = 'scheme';
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} else if (!stateOverride) {
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buffer = '';
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state = 'no scheme';
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continue;
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} else {
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err('Invalid scheme.');
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break loop;
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}
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break;
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case 'scheme':
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if (c && ALPHANUMERIC.test(c)) {
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buffer += c.toLowerCase(); // ASCII-safe
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} else if (c === ':') {
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this._scheme = buffer;
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buffer = '';
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if (stateOverride) {
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break loop;
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}
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if (isRelativeScheme(this._scheme)) {
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this._isRelative = true;
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}
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if (this._scheme === 'file') {
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state = 'relative';
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} else if (this._isRelative && base &&
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base._scheme === this._scheme) {
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state = 'relative or authority';
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} else if (this._isRelative) {
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state = 'authority first slash';
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} else {
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state = 'scheme data';
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}
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} else if (!stateOverride) {
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buffer = '';
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cursor = 0;
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state = 'no scheme';
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continue;
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} else if (c === EOF) {
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break loop;
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} else {
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err('Code point not allowed in scheme: ' + c);
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break loop;
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}
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break;
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case 'scheme data':
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if (c === '?') {
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this._query = '?';
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state = 'query';
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} else if (c === '#') {
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this._fragment = '#';
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state = 'fragment';
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} else {
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// XXX error handling
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if (c !== EOF && c !== '\t' && c !== '\n' && c !== '\r') {
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this._schemeData += percentEscape(c);
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}
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}
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break;
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case 'no scheme':
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if (!base || !(isRelativeScheme(base._scheme))) {
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err('Missing scheme.');
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invalid.call(this);
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} else {
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state = 'relative';
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continue;
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}
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break;
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case 'relative or authority':
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if (c === '/' && input[cursor + 1] === '/') {
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state = 'authority ignore slashes';
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} else {
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err('Expected /, got: ' + c);
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state = 'relative';
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continue;
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}
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break;
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case 'relative':
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this._isRelative = true;
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if (this._scheme !== 'file') {
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this._scheme = base._scheme;
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}
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if (c === EOF) {
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this._host = base._host;
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this._port = base._port;
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this._path = base._path.slice();
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this._query = base._query;
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this._username = base._username;
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this._password = base._password;
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break loop;
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} else if (c === '/' || c === '\\') {
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if (c === '\\') {
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err('\\ is an invalid code point.');
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}
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state = 'relative slash';
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} else if (c === '?') {
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this._host = base._host;
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this._port = base._port;
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this._path = base._path.slice();
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this._query = '?';
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this._username = base._username;
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this._password = base._password;
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state = 'query';
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} else if (c === '#') {
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this._host = base._host;
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this._port = base._port;
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this._path = base._path.slice();
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this._query = base._query;
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this._fragment = '#';
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this._username = base._username;
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this._password = base._password;
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state = 'fragment';
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} else {
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var nextC = input[cursor + 1];
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var nextNextC = input[cursor + 2];
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if (this._scheme !== 'file' || !ALPHA.test(c) ||
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(nextC !== ':' && nextC !== '|') ||
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(nextNextC !== EOF && nextNextC !== '/' && nextNextC !== '\\' &&
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nextNextC !== '?' && nextNextC !== '#')) {
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this._host = base._host;
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this._port = base._port;
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this._username = base._username;
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this._password = base._password;
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this._path = base._path.slice();
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this._path.pop();
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}
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state = 'relative path';
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continue;
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}
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break;
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case 'relative slash':
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if (c === '/' || c === '\\') {
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if (c === '\\') {
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err('\\ is an invalid code point.');
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}
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if (this._scheme === 'file') {
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state = 'file host';
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} else {
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state = 'authority ignore slashes';
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}
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} else {
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if (this._scheme !== 'file') {
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this._host = base._host;
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this._port = base._port;
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this._username = base._username;
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this._password = base._password;
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}
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state = 'relative path';
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continue;
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}
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break;
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case 'authority first slash':
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if (c === '/') {
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state = 'authority second slash';
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} else {
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err('Expected \'/\', got: ' + c);
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state = 'authority ignore slashes';
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continue;
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}
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break;
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case 'authority second slash':
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state = 'authority ignore slashes';
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if (c !== '/') {
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err('Expected \'/\', got: ' + c);
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continue;
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}
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break;
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case 'authority ignore slashes':
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if (c !== '/' && c !== '\\') {
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state = 'authority';
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continue;
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} else {
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err('Expected authority, got: ' + c);
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}
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break;
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case 'authority':
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if (c === '@') {
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if (seenAt) {
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err('@ already seen.');
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buffer += '%40';
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}
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seenAt = true;
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for (var i = 0; i < buffer.length; i++) {
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var cp = buffer[i];
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if (cp === '\t' || cp === '\n' || cp === '\r') {
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err('Invalid whitespace in authority.');
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continue;
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}
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// XXX check URL code points
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if (cp === ':' && this._password === null) {
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this._password = '';
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continue;
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}
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var tempC = percentEscape(cp);
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if (this._password !== null) {
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this._password += tempC;
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} else {
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this._username += tempC;
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}
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}
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buffer = '';
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} else if (c === EOF || c === '/' || c === '\\' ||
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c === '?' || c === '#') {
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cursor -= buffer.length;
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buffer = '';
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state = 'host';
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continue;
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} else {
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buffer += c;
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}
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break;
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case 'file host':
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if (c === EOF || c === '/' || c === '\\' || c === '?' || c === '#') {
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if (buffer.length === 2 && ALPHA.test(buffer[0]) &&
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(buffer[1] === ':' || buffer[1] === '|')) {
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state = 'relative path';
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} else if (buffer.length === 0) {
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state = 'relative path start';
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} else {
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this._host = IDNAToASCII.call(this, buffer);
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buffer = '';
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state = 'relative path start';
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}
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continue;
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} else if (c === '\t' || c === '\n' || c === '\r') {
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err('Invalid whitespace in file host.');
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} else {
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buffer += c;
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}
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break;
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case 'host':
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case 'hostname':
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if (c === ':' && !seenBracket) {
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// XXX host parsing
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this._host = IDNAToASCII.call(this, buffer);
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buffer = '';
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state = 'port';
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if (stateOverride === 'hostname') {
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break loop;
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}
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} else if (c === EOF || c === '/' ||
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c === '\\' || c === '?' || c === '#') {
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this._host = IDNAToASCII.call(this, buffer);
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buffer = '';
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state = 'relative path start';
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if (stateOverride) {
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break loop;
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}
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continue;
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} else if (c !== '\t' && c !== '\n' && c !== '\r') {
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if (c === '[') {
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seenBracket = true;
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} else if (c === ']') {
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seenBracket = false;
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}
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buffer += c;
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} else {
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err('Invalid code point in host/hostname: ' + c);
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}
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break;
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case 'port':
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if (/[0-9]/.test(c)) {
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buffer += c;
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} else if (c === EOF || c === '/' || c === '\\' ||
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c === '?' || c === '#' || stateOverride) {
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if (buffer !== '') {
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var temp = parseInt(buffer, 10);
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if (temp !== relative[this._scheme]) {
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this._port = temp + '';
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}
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buffer = '';
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}
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if (stateOverride) {
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break loop;
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}
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state = 'relative path start';
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continue;
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} else if (c === '\t' || c === '\n' || c === '\r') {
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err('Invalid code point in port: ' + c);
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} else {
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invalid.call(this);
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}
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break;
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case 'relative path start':
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if (c === '\\') {
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err('\'\\\' not allowed in path.');
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}
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state = 'relative path';
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if (c !== '/' && c !== '\\') {
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continue;
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}
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break;
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case 'relative path':
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if (c === EOF || c === '/' || c === '\\' ||
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(!stateOverride && (c === '?' || c === '#'))) {
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if (c === '\\') {
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err('\\ not allowed in relative path.');
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}
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var tmp;
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if ((tmp = relativePathDotMapping[buffer.toLowerCase()])) {
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buffer = tmp;
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}
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if (buffer === '..') {
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this._path.pop();
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if (c !== '/' && c !== '\\') {
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this._path.push('');
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}
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} else if (buffer === '.' && c !== '/' && c !== '\\') {
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this._path.push('');
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} else if (buffer !== '.') {
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if (this._scheme === 'file' && this._path.length === 0 &&
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buffer.length === 2 && ALPHA.test(buffer[0]) &&
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buffer[1] === '|') {
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buffer = buffer[0] + ':';
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}
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this._path.push(buffer);
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}
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buffer = '';
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if (c === '?') {
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this._query = '?';
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state = 'query';
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} else if (c === '#') {
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this._fragment = '#';
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state = 'fragment';
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}
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} else if (c !== '\t' && c !== '\n' && c !== '\r') {
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buffer += percentEscape(c);
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}
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break;
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case 'query':
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if (!stateOverride && c === '#') {
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this._fragment = '#';
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state = 'fragment';
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} else if (c !== EOF && c !== '\t' && c !== '\n' && c !== '\r') {
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this._query += percentEscapeQuery(c);
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}
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break;
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case 'fragment':
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if (c !== EOF && c !== '\t' && c !== '\n' && c !== '\r') {
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this._fragment += c;
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}
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break;
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}
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cursor++;
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}
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}
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function clear() {
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this._scheme = '';
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this._schemeData = '';
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this._username = '';
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this._password = null;
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this._host = '';
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this._port = '';
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this._path = [];
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this._query = '';
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this._fragment = '';
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this._isInvalid = false;
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this._isRelative = false;
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}
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// Does not process domain names or IP addresses.
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// Does not handle encoding for the query parameter.
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function JURL(url, base /* , encoding */) {
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if (base !== undefined && !(base instanceof JURL)) {
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base = new JURL(String(base));
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}
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this._url = url;
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clear.call(this);
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var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, '');
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// encoding = encoding || 'utf-8'
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parse.call(this, input, null, base);
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}
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JURL.prototype = {
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toString() {
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return this.href;
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},
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get href() {
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if (this._isInvalid) {
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return this._url;
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}
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var authority = '';
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if (this._username !== '' || this._password !== null) {
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authority = this._username +
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(this._password !== null ? ':' + this._password : '') + '@';
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}
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return this.protocol +
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(this._isRelative ? '//' + authority + this.host : '') +
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this.pathname + this._query + this._fragment;
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},
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// The named parameter should be different from the setter's function name.
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// Otherwise Safari 5 will throw an error (see issue 8541)
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set href(value) {
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clear.call(this);
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parse.call(this, value);
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},
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get protocol() {
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return this._scheme + ':';
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},
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set protocol(value) {
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if (this._isInvalid) {
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return;
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}
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parse.call(this, value + ':', 'scheme start');
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},
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get host() {
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return this._isInvalid ? '' : this._port ?
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this._host + ':' + this._port : this._host;
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},
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set host(value) {
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if (this._isInvalid || !this._isRelative) {
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return;
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}
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parse.call(this, value, 'host');
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},
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get hostname() {
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return this._host;
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},
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set hostname(value) {
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if (this._isInvalid || !this._isRelative) {
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return;
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}
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parse.call(this, value, 'hostname');
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},
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get port() {
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return this._port;
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},
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set port(value) {
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if (this._isInvalid || !this._isRelative) {
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return;
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}
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parse.call(this, value, 'port');
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},
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get pathname() {
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return this._isInvalid ? '' : this._isRelative ?
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'/' + this._path.join('/') : this._schemeData;
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},
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set pathname(value) {
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if (this._isInvalid || !this._isRelative) {
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return;
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}
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this._path = [];
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parse.call(this, value, 'relative path start');
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},
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get search() {
|
|
return this._isInvalid || !this._query || this._query === '?' ?
|
|
'' : this._query;
|
|
},
|
|
set search(value) {
|
|
if (this._isInvalid || !this._isRelative) {
|
|
return;
|
|
}
|
|
this._query = '?';
|
|
if (value[0] === '?') {
|
|
value = value.slice(1);
|
|
}
|
|
parse.call(this, value, 'query');
|
|
},
|
|
|
|
get hash() {
|
|
return this._isInvalid || !this._fragment || this._fragment === '#' ?
|
|
'' : this._fragment;
|
|
},
|
|
set hash(value) {
|
|
if (this._isInvalid) {
|
|
return;
|
|
}
|
|
this._fragment = '#';
|
|
if (value[0] === '#') {
|
|
value = value.slice(1);
|
|
}
|
|
parse.call(this, value, 'fragment');
|
|
},
|
|
|
|
get origin() {
|
|
var host;
|
|
if (this._isInvalid || !this._scheme) {
|
|
return '';
|
|
}
|
|
// javascript: Gecko returns String(""), WebKit/Blink String("null")
|
|
// Gecko throws error for "data://"
|
|
// data: Gecko returns "", Blink returns "data://", WebKit returns "null"
|
|
// Gecko returns String("") for file: mailto:
|
|
// WebKit/Blink returns String("SCHEME://") for file: mailto:
|
|
switch (this._scheme) {
|
|
case 'data':
|
|
case 'file':
|
|
case 'javascript':
|
|
case 'mailto':
|
|
return 'null';
|
|
case 'blob':
|
|
// Special case of blob: -- returns valid origin of _schemeData.
|
|
try {
|
|
return new JURL(this._schemeData).origin || 'null';
|
|
} catch (_) {
|
|
// Invalid _schemeData origin -- ignoring errors.
|
|
}
|
|
return 'null';
|
|
}
|
|
host = this.host;
|
|
if (!host) {
|
|
return '';
|
|
}
|
|
return this._scheme + '://' + host;
|
|
},
|
|
};
|
|
|
|
exports.URL = JURL;
|
|
})();
|