480 lines
20 KiB
JavaScript
480 lines
20 KiB
JavaScript
/**
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* URI.js
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*
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* @fileoverview An RFC 3986 compliant, scheme extendable URI parsing/validating/resolving library for JavaScript.
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* @author <a href="mailto:gary.court@gmail.com">Gary Court</a>
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* @see http://github.com/garycourt/uri-js
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*/
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/**
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* Copyright 2011 Gary Court. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY GARY COURT ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GARY COURT OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
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* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* The views and conclusions contained in the software and documentation are those of the
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* authors and should not be interpreted as representing official policies, either expressed
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* or implied, of Gary Court.
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*/
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import URI_PROTOCOL from "./regexps-uri";
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import IRI_PROTOCOL from "./regexps-iri";
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import punycode from "punycode";
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import { toUpperCase, typeOf, assign } from "./util";
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export const SCHEMES = {};
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export function pctEncChar(chr) {
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const c = chr.charCodeAt(0);
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let e;
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if (c < 16)
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e = "%0" + c.toString(16).toUpperCase();
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else if (c < 128)
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e = "%" + c.toString(16).toUpperCase();
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else if (c < 2048)
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e = "%" + ((c >> 6) | 192).toString(16).toUpperCase() + "%" + ((c & 63) | 128).toString(16).toUpperCase();
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else
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e = "%" + ((c >> 12) | 224).toString(16).toUpperCase() + "%" + (((c >> 6) & 63) | 128).toString(16).toUpperCase() + "%" + ((c & 63) | 128).toString(16).toUpperCase();
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return e;
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}
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export function pctDecChars(str) {
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let newStr = "";
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let i = 0;
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const il = str.length;
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while (i < il) {
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const c = parseInt(str.substr(i + 1, 2), 16);
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if (c < 128) {
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newStr += String.fromCharCode(c);
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i += 3;
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}
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else if (c >= 194 && c < 224) {
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if ((il - i) >= 6) {
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const c2 = parseInt(str.substr(i + 4, 2), 16);
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newStr += String.fromCharCode(((c & 31) << 6) | (c2 & 63));
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}
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else {
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newStr += str.substr(i, 6);
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}
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i += 6;
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}
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else if (c >= 224) {
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if ((il - i) >= 9) {
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const c2 = parseInt(str.substr(i + 4, 2), 16);
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const c3 = parseInt(str.substr(i + 7, 2), 16);
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newStr += String.fromCharCode(((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63));
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}
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else {
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newStr += str.substr(i, 9);
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}
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i += 9;
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}
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else {
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newStr += str.substr(i, 3);
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i += 3;
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}
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}
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return newStr;
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}
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function _normalizeComponentEncoding(components, protocol) {
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function decodeUnreserved(str) {
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const decStr = pctDecChars(str);
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return (!decStr.match(protocol.UNRESERVED) ? str : decStr);
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}
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if (components.scheme)
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components.scheme = String(components.scheme).replace(protocol.PCT_ENCODED, decodeUnreserved).toLowerCase().replace(protocol.NOT_SCHEME, "");
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if (components.userinfo !== undefined)
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components.userinfo = String(components.userinfo).replace(protocol.PCT_ENCODED, decodeUnreserved).replace(protocol.NOT_USERINFO, pctEncChar).replace(protocol.PCT_ENCODED, toUpperCase);
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if (components.host !== undefined)
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components.host = String(components.host).replace(protocol.PCT_ENCODED, decodeUnreserved).toLowerCase().replace(protocol.NOT_HOST, pctEncChar).replace(protocol.PCT_ENCODED, toUpperCase);
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if (components.path !== undefined)
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components.path = String(components.path).replace(protocol.PCT_ENCODED, decodeUnreserved).replace((components.scheme ? protocol.NOT_PATH : protocol.NOT_PATH_NOSCHEME), pctEncChar).replace(protocol.PCT_ENCODED, toUpperCase);
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if (components.query !== undefined)
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components.query = String(components.query).replace(protocol.PCT_ENCODED, decodeUnreserved).replace(protocol.NOT_QUERY, pctEncChar).replace(protocol.PCT_ENCODED, toUpperCase);
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if (components.fragment !== undefined)
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components.fragment = String(components.fragment).replace(protocol.PCT_ENCODED, decodeUnreserved).replace(protocol.NOT_FRAGMENT, pctEncChar).replace(protocol.PCT_ENCODED, toUpperCase);
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return components;
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}
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;
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function _stripLeadingZeros(str) {
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return str.replace(/^0*(.*)/, "$1") || "0";
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}
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function _normalizeIPv4(host, protocol) {
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const matches = host.match(protocol.IPV4ADDRESS) || [];
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const [, address] = matches;
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if (address) {
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return address.split(".").map(_stripLeadingZeros).join(".");
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}
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else {
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return host;
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}
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}
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function _normalizeIPv6(host, protocol) {
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const matches = host.match(protocol.IPV6ADDRESS) || [];
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const [, address, zone] = matches;
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if (address) {
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const [last, first] = address.toLowerCase().split('::').reverse();
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const firstFields = first ? first.split(":").map(_stripLeadingZeros) : [];
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const lastFields = last.split(":").map(_stripLeadingZeros);
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const isLastFieldIPv4Address = protocol.IPV4ADDRESS.test(lastFields[lastFields.length - 1]);
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const fieldCount = isLastFieldIPv4Address ? 7 : 8;
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const lastFieldsStart = lastFields.length - fieldCount;
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const fields = Array(fieldCount);
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for (let x = 0; x < fieldCount; ++x) {
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fields[x] = firstFields[x] || lastFields[lastFieldsStart + x] || '';
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}
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if (isLastFieldIPv4Address) {
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fields[fieldCount - 1] = _normalizeIPv4(fields[fieldCount - 1], protocol);
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}
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const allZeroFields = fields.reduce((acc, field, index) => {
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if (!field || field === "0") {
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const lastLongest = acc[acc.length - 1];
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if (lastLongest && lastLongest.index + lastLongest.length === index) {
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lastLongest.length++;
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}
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else {
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acc.push({ index, length: 1 });
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}
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}
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return acc;
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}, []);
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const longestZeroFields = allZeroFields.sort((a, b) => b.length - a.length)[0];
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let newHost;
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if (longestZeroFields && longestZeroFields.length > 1) {
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const newFirst = fields.slice(0, longestZeroFields.index);
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const newLast = fields.slice(longestZeroFields.index + longestZeroFields.length);
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newHost = newFirst.join(":") + "::" + newLast.join(":");
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}
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else {
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newHost = fields.join(":");
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}
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if (zone) {
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newHost += "%" + zone;
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}
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return newHost;
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}
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else {
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return host;
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}
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}
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const URI_PARSE = /^(?:([^:\/?#]+):)?(?:\/\/((?:([^\/?#@]*)@)?(\[[^\/?#\]]+\]|[^\/?#:]*)(?:\:(\d*))?))?([^?#]*)(?:\?([^#]*))?(?:#((?:.|\n|\r)*))?/i;
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const NO_MATCH_IS_UNDEFINED = ("").match(/(){0}/)[1] === undefined;
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export function parse(uriString, options = {}) {
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const components = {};
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const protocol = (options.iri !== false ? IRI_PROTOCOL : URI_PROTOCOL);
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if (options.reference === "suffix")
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uriString = (options.scheme ? options.scheme + ":" : "") + "//" + uriString;
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const matches = uriString.match(URI_PARSE);
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if (matches) {
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if (NO_MATCH_IS_UNDEFINED) {
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//store each component
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components.scheme = matches[1];
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components.userinfo = matches[3];
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components.host = matches[4];
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components.port = parseInt(matches[5], 10);
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components.path = matches[6] || "";
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components.query = matches[7];
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components.fragment = matches[8];
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//fix port number
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if (isNaN(components.port)) {
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components.port = matches[5];
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}
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}
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else { //IE FIX for improper RegExp matching
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//store each component
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components.scheme = matches[1] || undefined;
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components.userinfo = (uriString.indexOf("@") !== -1 ? matches[3] : undefined);
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components.host = (uriString.indexOf("//") !== -1 ? matches[4] : undefined);
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components.port = parseInt(matches[5], 10);
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components.path = matches[6] || "";
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components.query = (uriString.indexOf("?") !== -1 ? matches[7] : undefined);
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components.fragment = (uriString.indexOf("#") !== -1 ? matches[8] : undefined);
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//fix port number
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if (isNaN(components.port)) {
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components.port = (uriString.match(/\/\/(?:.|\n)*\:(?:\/|\?|\#|$)/) ? matches[4] : undefined);
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}
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}
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if (components.host) {
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//normalize IP hosts
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components.host = _normalizeIPv6(_normalizeIPv4(components.host, protocol), protocol);
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}
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//determine reference type
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if (components.scheme === undefined && components.userinfo === undefined && components.host === undefined && components.port === undefined && !components.path && components.query === undefined) {
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components.reference = "same-document";
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}
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else if (components.scheme === undefined) {
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components.reference = "relative";
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}
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else if (components.fragment === undefined) {
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components.reference = "absolute";
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}
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else {
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components.reference = "uri";
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}
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//check for reference errors
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if (options.reference && options.reference !== "suffix" && options.reference !== components.reference) {
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components.error = components.error || "URI is not a " + options.reference + " reference.";
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}
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//find scheme handler
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const schemeHandler = SCHEMES[(options.scheme || components.scheme || "").toLowerCase()];
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//check if scheme can't handle IRIs
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if (!options.unicodeSupport && (!schemeHandler || !schemeHandler.unicodeSupport)) {
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//if host component is a domain name
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if (components.host && (options.domainHost || (schemeHandler && schemeHandler.domainHost))) {
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//convert Unicode IDN -> ASCII IDN
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try {
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components.host = punycode.toASCII(components.host.replace(protocol.PCT_ENCODED, pctDecChars).toLowerCase());
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}
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catch (e) {
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components.error = components.error || "Host's domain name can not be converted to ASCII via punycode: " + e;
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}
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}
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//convert IRI -> URI
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_normalizeComponentEncoding(components, URI_PROTOCOL);
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}
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else {
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//normalize encodings
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_normalizeComponentEncoding(components, protocol);
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}
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//perform scheme specific parsing
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if (schemeHandler && schemeHandler.parse) {
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schemeHandler.parse(components, options);
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}
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}
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else {
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components.error = components.error || "URI can not be parsed.";
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}
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return components;
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}
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;
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function _recomposeAuthority(components, options) {
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const protocol = (options.iri !== false ? IRI_PROTOCOL : URI_PROTOCOL);
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const uriTokens = [];
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if (components.userinfo !== undefined) {
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uriTokens.push(components.userinfo);
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uriTokens.push("@");
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}
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if (components.host !== undefined) {
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//normalize IP hosts, add brackets and escape zone separator for IPv6
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uriTokens.push(_normalizeIPv6(_normalizeIPv4(String(components.host), protocol), protocol).replace(protocol.IPV6ADDRESS, (_, $1, $2) => "[" + $1 + ($2 ? "%25" + $2 : "") + "]"));
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}
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if (typeof components.port === "number" || typeof components.port === "string") {
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uriTokens.push(":");
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uriTokens.push(String(components.port));
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}
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return uriTokens.length ? uriTokens.join("") : undefined;
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}
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;
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const RDS1 = /^\.\.?\//;
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const RDS2 = /^\/\.(\/|$)/;
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const RDS3 = /^\/\.\.(\/|$)/;
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const RDS4 = /^\.\.?$/;
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const RDS5 = /^\/?(?:.|\n)*?(?=\/|$)/;
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export function removeDotSegments(input) {
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const output = [];
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while (input.length) {
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if (input.match(RDS1)) {
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input = input.replace(RDS1, "");
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}
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else if (input.match(RDS2)) {
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input = input.replace(RDS2, "/");
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}
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else if (input.match(RDS3)) {
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input = input.replace(RDS3, "/");
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output.pop();
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}
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else if (input === "." || input === "..") {
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input = "";
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}
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else {
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const im = input.match(RDS5);
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if (im) {
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const s = im[0];
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input = input.slice(s.length);
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output.push(s);
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}
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else {
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throw new Error("Unexpected dot segment condition");
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}
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}
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}
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return output.join("");
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}
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;
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export function serialize(components, options = {}) {
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const protocol = (options.iri ? IRI_PROTOCOL : URI_PROTOCOL);
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const uriTokens = [];
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//find scheme handler
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const schemeHandler = SCHEMES[(options.scheme || components.scheme || "").toLowerCase()];
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//perform scheme specific serialization
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if (schemeHandler && schemeHandler.serialize)
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schemeHandler.serialize(components, options);
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if (components.host) {
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//if host component is an IPv6 address
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if (protocol.IPV6ADDRESS.test(components.host)) {
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//TODO: normalize IPv6 address as per RFC 5952
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}
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//if host component is a domain name
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else if (options.domainHost || (schemeHandler && schemeHandler.domainHost)) {
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//convert IDN via punycode
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try {
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components.host = (!options.iri ? punycode.toASCII(components.host.replace(protocol.PCT_ENCODED, pctDecChars).toLowerCase()) : punycode.toUnicode(components.host));
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}
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catch (e) {
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components.error = components.error || "Host's domain name can not be converted to " + (!options.iri ? "ASCII" : "Unicode") + " via punycode: " + e;
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}
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}
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}
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//normalize encoding
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_normalizeComponentEncoding(components, protocol);
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if (options.reference !== "suffix" && components.scheme) {
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uriTokens.push(components.scheme);
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uriTokens.push(":");
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}
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const authority = _recomposeAuthority(components, options);
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if (authority !== undefined) {
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if (options.reference !== "suffix") {
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uriTokens.push("//");
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}
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uriTokens.push(authority);
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if (components.path && components.path.charAt(0) !== "/") {
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uriTokens.push("/");
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}
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}
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if (components.path !== undefined) {
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let s = components.path;
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if (!options.absolutePath && (!schemeHandler || !schemeHandler.absolutePath)) {
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s = removeDotSegments(s);
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}
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if (authority === undefined) {
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s = s.replace(/^\/\//, "/%2F"); //don't allow the path to start with "//"
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}
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uriTokens.push(s);
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}
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if (components.query !== undefined) {
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uriTokens.push("?");
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uriTokens.push(components.query);
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}
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if (components.fragment !== undefined) {
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uriTokens.push("#");
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uriTokens.push(components.fragment);
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}
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return uriTokens.join(""); //merge tokens into a string
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}
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;
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export function resolveComponents(base, relative, options = {}, skipNormalization) {
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const target = {};
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if (!skipNormalization) {
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base = parse(serialize(base, options), options); //normalize base components
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relative = parse(serialize(relative, options), options); //normalize relative components
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}
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options = options || {};
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if (!options.tolerant && relative.scheme) {
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target.scheme = relative.scheme;
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//target.authority = relative.authority;
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target.userinfo = relative.userinfo;
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target.host = relative.host;
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target.port = relative.port;
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target.path = removeDotSegments(relative.path || "");
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target.query = relative.query;
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}
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else {
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if (relative.userinfo !== undefined || relative.host !== undefined || relative.port !== undefined) {
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//target.authority = relative.authority;
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target.userinfo = relative.userinfo;
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target.host = relative.host;
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target.port = relative.port;
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target.path = removeDotSegments(relative.path || "");
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target.query = relative.query;
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}
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else {
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if (!relative.path) {
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target.path = base.path;
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if (relative.query !== undefined) {
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target.query = relative.query;
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}
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else {
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target.query = base.query;
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}
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}
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else {
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if (relative.path.charAt(0) === "/") {
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target.path = removeDotSegments(relative.path);
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}
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else {
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if ((base.userinfo !== undefined || base.host !== undefined || base.port !== undefined) && !base.path) {
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target.path = "/" + relative.path;
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}
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else if (!base.path) {
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target.path = relative.path;
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}
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else {
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target.path = base.path.slice(0, base.path.lastIndexOf("/") + 1) + relative.path;
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}
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target.path = removeDotSegments(target.path);
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}
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target.query = relative.query;
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}
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//target.authority = base.authority;
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target.userinfo = base.userinfo;
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target.host = base.host;
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target.port = base.port;
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}
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target.scheme = base.scheme;
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}
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target.fragment = relative.fragment;
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return target;
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}
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;
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export function resolve(baseURI, relativeURI, options) {
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const schemelessOptions = assign({ scheme: 'null' }, options);
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return serialize(resolveComponents(parse(baseURI, schemelessOptions), parse(relativeURI, schemelessOptions), schemelessOptions, true), schemelessOptions);
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}
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;
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export function normalize(uri, options) {
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if (typeof uri === "string") {
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uri = serialize(parse(uri, options), options);
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}
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else if (typeOf(uri) === "object") {
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uri = parse(serialize(uri, options), options);
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}
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return uri;
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}
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;
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export function equal(uriA, uriB, options) {
|
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if (typeof uriA === "string") {
|
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uriA = serialize(parse(uriA, options), options);
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|
}
|
|
else if (typeOf(uriA) === "object") {
|
|
uriA = serialize(uriA, options);
|
|
}
|
|
if (typeof uriB === "string") {
|
|
uriB = serialize(parse(uriB, options), options);
|
|
}
|
|
else if (typeOf(uriB) === "object") {
|
|
uriB = serialize(uriB, options);
|
|
}
|
|
return uriA === uriB;
|
|
}
|
|
;
|
|
export function escapeComponent(str, options) {
|
|
return str && str.toString().replace((!options || !options.iri ? URI_PROTOCOL.ESCAPE : IRI_PROTOCOL.ESCAPE), pctEncChar);
|
|
}
|
|
;
|
|
export function unescapeComponent(str, options) {
|
|
return str && str.toString().replace((!options || !options.iri ? URI_PROTOCOL.PCT_ENCODED : IRI_PROTOCOL.PCT_ENCODED), pctDecChars);
|
|
}
|
|
;
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|
//# sourceMappingURL=uri.js.map
|