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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const { toASCII } = process.binding('config').hasIntl ?
process.binding('icu') : require('punycode');
const { hexTable } = require('internal/querystring');
const errors = require('internal/errors');
// WHATWG URL implementation provided by internal/url
const {
URL,
URLSearchParams,
domainToASCII,
domainToUnicode,
formatSymbol
} = require('internal/url');
// Original url.parse() API
function Url() {
this.protocol = null;
this.slashes = null;
this.auth = null;
this.host = null;
this.port = null;
this.hostname = null;
this.hash = null;
this.search = null;
this.query = null;
this.pathname = null;
this.path = null;
this.href = null;
}
// Reference: RFC 3986, RFC 1808, RFC 2396
// define these here so at least they only have to be
// compiled once on the first module load.
const protocolPattern = /^[a-z0-9.+-]+:/i;
const portPattern = /:[0-9]*$/;
const hostPattern = /^\/\/[^@/]+@[^@/]+/;
// Special case for a simple path URL
const simplePathPattern = /^(\/\/?(?!\/)[^?\s]*)(\?[^\s]*)?$/;
const hostnameMaxLen = 255;
// protocols that can allow "unsafe" and "unwise" chars.
const unsafeProtocol = {
'javascript': true,
'javascript:': true
};
// protocols that never have a hostname.
const hostlessProtocol = {
'javascript': true,
'javascript:': true
};
// protocols that always contain a // bit.
const slashedProtocol = {
'http': true,
'http:': true,
'https': true,
'https:': true,
'ftp': true,
'ftp:': true,
'gopher': true,
'gopher:': true,
'file': true,
'file:': true
};
const querystring = require('querystring');
function urlParse(url, parseQueryString, slashesDenoteHost) {
if (url instanceof Url) return url;
var urlObject = new Url();
urlObject.parse(url, parseQueryString, slashesDenoteHost);
return urlObject;
}
Url.prototype.parse = function parse(url, parseQueryString, slashesDenoteHost) {
if (typeof url !== 'string') {
throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'url', 'string', url);
}
// Copy chrome, IE, opera backslash-handling behavior.
// Back slashes before the query string get converted to forward slashes
// See: https://code.google.com/p/chromium/issues/detail?id=25916
var hasHash = false;
var start = -1;
var end = -1;
var rest = '';
var lastPos = 0;
var i = 0;
for (var inWs = false, split = false; i < url.length; ++i) {
const code = url.charCodeAt(i);
// Find first and last non-whitespace characters for trimming
const isWs = code === 32/* */ ||
code === 9/*\t*/ ||
code === 13/*\r*/ ||
code === 10/*\n*/ ||
code === 12/*\f*/ ||
code === 160/*\u00A0*/ ||
code === 65279/*\uFEFF*/;
if (start === -1) {
if (isWs)
continue;
lastPos = start = i;
} else {
if (inWs) {
if (!isWs) {
end = -1;
inWs = false;
}
} else if (isWs) {
end = i;
inWs = true;
}
}
// Only convert backslashes while we haven't seen a split character
if (!split) {
switch (code) {
case 35: // '#'
hasHash = true;
// Fall through
case 63: // '?'
split = true;
break;
case 92: // '\\'
if (i - lastPos > 0)
rest += url.slice(lastPos, i);
rest += '/';
lastPos = i + 1;
break;
}
} else if (!hasHash && code === 35/*#*/) {
hasHash = true;
}
}
// Check if string was non-empty (including strings with only whitespace)
if (start !== -1) {
if (lastPos === start) {
// We didn't convert any backslashes
if (end === -1) {
if (start === 0)
rest = url;
else
rest = url.slice(start);
} else {
rest = url.slice(start, end);
}
} else if (end === -1 && lastPos < url.length) {
// We converted some backslashes and have only part of the entire string
rest += url.slice(lastPos);
} else if (end !== -1 && lastPos < end) {
// We converted some backslashes and have only part of the entire string
rest += url.slice(lastPos, end);
}
}
if (!slashesDenoteHost && !hasHash) {
// Try fast path regexp
const simplePath = simplePathPattern.exec(rest);
if (simplePath) {
this.path = rest;
this.href = rest;
this.pathname = simplePath[1];
if (simplePath[2]) {
this.search = simplePath[2];
if (parseQueryString) {
this.query = querystring.parse(this.search.slice(1));
} else {
this.query = this.search.slice(1);
}
} else if (parseQueryString) {
this.search = null;
this.query = Object.create(null);
}
return this;
}
}
var proto = protocolPattern.exec(rest);
if (proto) {
proto = proto[0];
var lowerProto = proto.toLowerCase();
this.protocol = lowerProto;
rest = rest.slice(proto.length);
}
// figure out if it's got a host
// user@server is *always* interpreted as a hostname, and url
// resolution will treat //foo/bar as host=foo,path=bar because that's
// how the browser resolves relative URLs.
if (slashesDenoteHost || proto || hostPattern.test(rest)) {
var slashes = rest.charCodeAt(0) === 47/*/*/ &&
rest.charCodeAt(1) === 47/*/*/;
if (slashes && !(proto && hostlessProtocol[proto])) {
rest = rest.slice(2);
this.slashes = true;
}
}
if (!hostlessProtocol[proto] &&
(slashes || (proto && !slashedProtocol[proto]))) {
// there's a hostname.
// the first instance of /, ?, ;, or # ends the host.
//
// If there is an @ in the hostname, then non-host chars *are* allowed
// to the left of the last @ sign, unless some host-ending character
// comes *before* the @-sign.
// URLs are obnoxious.
//
// ex:
// http://a@b@c/ => user:a@b host:c
// http://a@b?@c => user:a host:b path:/?@c
// v0.12 TODO(isaacs): This is not quite how Chrome does things.
// Review our test case against browsers more comprehensively.
var hostEnd = -1;
var atSign = -1;
var nonHost = -1;
for (i = 0; i < rest.length; ++i) {
switch (rest.charCodeAt(i)) {
case 9: // '\t'
case 10: // '\n'
case 13: // '\r'
case 32: // ' '
case 34: // '"'
case 37: // '%'
case 39: // '\''
case 59: // ';'
case 60: // '<'
case 62: // '>'
case 92: // '\\'
case 94: // '^'
case 96: // '`'
case 123: // '{'
case 124: // '|'
case 125: // '}'
// Characters that are never ever allowed in a hostname from RFC 2396
if (nonHost === -1)
nonHost = i;
break;
case 35: // '#'
case 47: // '/'
case 63: // '?'
// Find the first instance of any host-ending characters
if (nonHost === -1)
nonHost = i;
hostEnd = i;
break;
case 64: // '@'
// At this point, either we have an explicit point where the
// auth portion cannot go past, or the last @ char is the decider.
atSign = i;
nonHost = -1;
break;
}
if (hostEnd !== -1)
break;
}
start = 0;
if (atSign !== -1) {
this.auth = decodeURIComponent(rest.slice(0, atSign));
start = atSign + 1;
}
if (nonHost === -1) {
this.host = rest.slice(start);
rest = '';
} else {
this.host = rest.slice(start, nonHost);
rest = rest.slice(nonHost);
}
// pull out port.
this.parseHost();
// we've indicated that there is a hostname,
// so even if it's empty, it has to be present.
if (typeof this.hostname !== 'string')
this.hostname = '';
var hostname = this.hostname;
// if hostname begins with [ and ends with ]
// assume that it's an IPv6 address.
var ipv6Hostname = hostname.charCodeAt(0) === 91/*[*/ &&
hostname.charCodeAt(hostname.length - 1) === 93/*]*/;
// validate a little.
if (!ipv6Hostname) {
const result = validateHostname(this, rest, hostname);
if (result !== undefined)
rest = result;
}
if (this.hostname.length > hostnameMaxLen) {
this.hostname = '';
} else {
// hostnames are always lower case.
this.hostname = this.hostname.toLowerCase();
}
if (!ipv6Hostname) {
// IDNA Support: Returns a punycoded representation of "domain".
// It only converts parts of the domain name that
// have non-ASCII characters, i.e. it doesn't matter if
// you call it with a domain that already is ASCII-only.
// Use lenient mode (`true`) to try to support even non-compliant
// URLs.
this.hostname = toASCII(this.hostname, true);
}
var p = this.port ? ':' + this.port : '';
var h = this.hostname || '';
this.host = h + p;
// strip [ and ] from the hostname
// the host field still retains them, though
if (ipv6Hostname) {
this.hostname = this.hostname.slice(1, -1);
if (rest[0] !== '/') {
rest = '/' + rest;
}
}
}
// now rest is set to the post-host stuff.
// chop off any delim chars.
if (!unsafeProtocol[lowerProto]) {
// First, make 100% sure that any "autoEscape" chars get
// escaped, even if encodeURIComponent doesn't think they
// need to be.
rest = autoEscapeStr(rest);
}
var questionIdx = -1;
var hashIdx = -1;
for (i = 0; i < rest.length; ++i) {
const code = rest.charCodeAt(i);
if (code === 35/*#*/) {
this.hash = rest.slice(i);
hashIdx = i;
break;
} else if (code === 63/*?*/ && questionIdx === -1) {
questionIdx = i;
}
}
if (questionIdx !== -1) {
if (hashIdx === -1) {
this.search = rest.slice(questionIdx);
this.query = rest.slice(questionIdx + 1);
} else {
this.search = rest.slice(questionIdx, hashIdx);
this.query = rest.slice(questionIdx + 1, hashIdx);
}
if (parseQueryString) {
this.query = querystring.parse(this.query);
}
} else if (parseQueryString) {
// no query string, but parseQueryString still requested
this.search = null;
this.query = Object.create(null);
}
const useQuestionIdx =
questionIdx !== -1 && (hashIdx === -1 || questionIdx < hashIdx);
const firstIdx = useQuestionIdx ? questionIdx : hashIdx;
if (firstIdx === -1) {
if (rest.length > 0)
this.pathname = rest;
} else if (firstIdx > 0) {
this.pathname = rest.slice(0, firstIdx);
}
if (slashedProtocol[lowerProto] &&
this.hostname && !this.pathname) {
this.pathname = '/';
}
// to support http.request
if (this.pathname || this.search) {
const p = this.pathname || '';
const s = this.search || '';
this.path = p + s;
}
// finally, reconstruct the href based on what has been validated.
this.href = this.format();
return this;
};
function validateHostname(self, rest, hostname) {
for (var i = 0; i < hostname.length; ++i) {
const code = hostname.charCodeAt(i);
const isValid = (code >= 97/*a*/ && code <= 122/*z*/) ||
code === 46/*.*/ ||
(code >= 65/*A*/ && code <= 90/*Z*/) ||
(code >= 48/*0*/ && code <= 57/*9*/) ||
code === 45/*-*/ ||
code === 43/*+*/ ||
code === 95/*_*/ ||
code > 127;
// Invalid host character
if (!isValid) {
self.hostname = hostname.slice(0, i);
return '/' + hostname.slice(i) + rest;
}
}
}
// Automatically escape all delimiters and unwise characters from RFC 2396.
// Also escape single quotes in case of an XSS attack.
// Return the escaped string.
function autoEscapeStr(rest) {
var escaped = '';
var lastEscapedPos = 0;
for (var i = 0; i < rest.length; ++i) {
// Manual switching is faster than using a Map/Object.
// `escaped` contains substring up to the last escaped character.
switch (rest.charCodeAt(i)) {
case 9: // '\t'
// Concat if there are ordinary characters in the middle.
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%09';
lastEscapedPos = i + 1;
break;
case 10: // '\n'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%0A';
lastEscapedPos = i + 1;
break;
case 13: // '\r'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%0D';
lastEscapedPos = i + 1;
break;
case 32: // ' '
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%20';
lastEscapedPos = i + 1;
break;
case 34: // '"'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%22';
lastEscapedPos = i + 1;
break;
case 39: // '\''
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%27';
lastEscapedPos = i + 1;
break;
case 60: // '<'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%3C';
lastEscapedPos = i + 1;
break;
case 62: // '>'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%3E';
lastEscapedPos = i + 1;
break;
case 92: // '\\'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%5C';
lastEscapedPos = i + 1;
break;
case 94: // '^'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%5E';
lastEscapedPos = i + 1;
break;
case 96: // '`'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%60';
lastEscapedPos = i + 1;
break;
case 123: // '{'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%7B';
lastEscapedPos = i + 1;
break;
case 124: // '|'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%7C';
lastEscapedPos = i + 1;
break;
case 125: // '}'
if (i > lastEscapedPos)
escaped += rest.slice(lastEscapedPos, i);
escaped += '%7D';
lastEscapedPos = i + 1;
break;
}
}
if (lastEscapedPos === 0) // Nothing has been escaped.
return rest;
// There are ordinary characters at the end.
if (lastEscapedPos < rest.length)
escaped += rest.slice(lastEscapedPos);
return escaped;
}
// format a parsed object into a url string
function urlFormat(urlObject, options) {
// ensure it's an object, and not a string url.
// If it's an object, this is a no-op.
// this way, you can call urlParse() on strings
// to clean up potentially wonky urls.
if (typeof urlObject === 'string') {
urlObject = urlParse(urlObject);
} else if (typeof urlObject !== 'object' || urlObject === null) {
throw new errors.TypeError('ERR_INVALID_ARG_TYPE', 'urlObject',
['object', 'string'], urlObject);
} else if (!(urlObject instanceof Url)) {
var format = urlObject[formatSymbol];
return format ?
format.call(urlObject, options) :
Url.prototype.format.call(urlObject);
}
return urlObject.format();
}
Url.prototype.format = function format() {
var auth = this.auth || '';
if (auth) {
auth = encodeAuth(auth);
auth += '@';
}
var protocol = this.protocol || '';
var pathname = this.pathname || '';
var hash = this.hash || '';
var host = '';
var query = '';
if (this.host) {
host = auth + this.host;
} else if (this.hostname) {
host = auth + (
this.hostname.indexOf(':') === -1 ?
this.hostname :
'[' + this.hostname + ']'
);
if (this.port) {
host += ':' + this.port;
}
}
if (this.query !== null && typeof this.query === 'object')
query = querystring.stringify(this.query);
var search = this.search || (query && ('?' + query)) || '';
if (protocol && protocol.charCodeAt(protocol.length - 1) !== 58/*:*/)
protocol += ':';
var newPathname = '';
var lastPos = 0;
for (var i = 0; i < pathname.length; ++i) {
switch (pathname.charCodeAt(i)) {
case 35: // '#'
if (i - lastPos > 0)
newPathname += pathname.slice(lastPos, i);
newPathname += '%23';
lastPos = i + 1;
break;
case 63: // '?'
if (i - lastPos > 0)
newPathname += pathname.slice(lastPos, i);
newPathname += '%3F';
lastPos = i + 1;
break;
}
}
if (lastPos > 0) {
if (lastPos !== pathname.length)
pathname = newPathname + pathname.slice(lastPos);
else
pathname = newPathname;
}
// only the slashedProtocols get the //. Not mailto:, xmpp:, etc.
// unless they had them to begin with.
if (this.slashes || slashedProtocol[protocol]) {
if (this.slashes || host) {
if (pathname && pathname.charCodeAt(0) !== 47/*/*/)
pathname = '/' + pathname;
host = '//' + host;
} else if (protocol.length >= 4 &&
protocol.charCodeAt(0) === 102/*f*/ &&
protocol.charCodeAt(1) === 105/*i*/ &&
protocol.charCodeAt(2) === 108/*l*/ &&
protocol.charCodeAt(3) === 101/*e*/) {
host = '//';
}
}
search = search.replace(/#/g, '%23');
if (hash && hash.charCodeAt(0) !== 35/*#*/) hash = '#' + hash;
if (search && search.charCodeAt(0) !== 63/*?*/) search = '?' + search;
return protocol + host + pathname + search + hash;
};
function urlResolve(source, relative) {
return urlParse(source, false, true).resolve(relative);
}
Url.prototype.resolve = function resolve(relative) {
return this.resolveObject(urlParse(relative, false, true)).format();
};
function urlResolveObject(source, relative) {
if (!source) return relative;
return urlParse(source, false, true).resolveObject(relative);
}
Url.prototype.resolveObject = function resolveObject(relative) {
if (typeof relative === 'string') {
var rel = new Url();
rel.parse(relative, false, true);
relative = rel;
}
var result = new Url();
var tkeys = Object.keys(this);
for (var tk = 0; tk < tkeys.length; tk++) {
var tkey = tkeys[tk];
result[tkey] = this[tkey];
}
// hash is always overridden, no matter what.
// even href="" will remove it.
result.hash = relative.hash;
// if the relative url is empty, then there's nothing left to do here.
if (relative.href === '') {
result.href = result.format();
return result;
}
// hrefs like //foo/bar always cut to the protocol.
if (relative.slashes && !relative.protocol) {
// take everything except the protocol from relative
var rkeys = Object.keys(relative);
for (var rk = 0; rk < rkeys.length; rk++) {
var rkey = rkeys[rk];
if (rkey !== 'protocol')
result[rkey] = relative[rkey];
}
//urlParse appends trailing / to urls like http://www.example.com
if (slashedProtocol[result.protocol] &&
result.hostname && !result.pathname) {
result.path = result.pathname = '/';
}
result.href = result.format();
return result;
}
if (relative.protocol && relative.protocol !== result.protocol) {
// if it's a known url protocol, then changing
// the protocol does weird things
// first, if it's not file:, then we MUST have a host,
// and if there was a path
// to begin with, then we MUST have a path.
// if it is file:, then the host is dropped,
// because that's known to be hostless.
// anything else is assumed to be absolute.
if (!slashedProtocol[relative.protocol]) {
var keys = Object.keys(relative);
for (var v = 0; v < keys.length; v++) {
var k = keys[v];
result[k] = relative[k];
}
result.href = result.format();
return result;
}
result.protocol = relative.protocol;
if (!relative.host &&
!/^file:?$/.test(relative.protocol) &&
!hostlessProtocol[relative.protocol]) {
const relPath = (relative.pathname || '').split('/');
while (relPath.length && !(relative.host = relPath.shift()));
if (!relative.host) relative.host = '';
if (!relative.hostname) relative.hostname = '';
if (relPath[0] !== '') relPath.unshift('');
if (relPath.length < 2) relPath.unshift('');
result.pathname = relPath.join('/');
} else {
result.pathname = relative.pathname;
}
result.search = relative.search;
result.query = relative.query;
result.host = relative.host || '';
result.auth = relative.auth;
result.hostname = relative.hostname || relative.host;
result.port = relative.port;
// to support http.request
if (result.pathname || result.search) {
var p = result.pathname || '';
var s = result.search || '';
result.path = p + s;
}
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
}
var isSourceAbs = (result.pathname && result.pathname.charAt(0) === '/');
var isRelAbs = (
relative.host || relative.pathname && relative.pathname.charAt(0) === '/'
);
var mustEndAbs = (isRelAbs || isSourceAbs ||
(result.host && relative.pathname));
var removeAllDots = mustEndAbs;
var srcPath = result.pathname && result.pathname.split('/') || [];
var relPath = relative.pathname && relative.pathname.split('/') || [];
var noLeadingSlashes = result.protocol && !slashedProtocol[result.protocol];
// if the url is a non-slashed url, then relative
// links like ../.. should be able
// to crawl up to the hostname, as well. This is strange.
// result.protocol has already been set by now.
// Later on, put the first path part into the host field.
if (noLeadingSlashes) {
result.hostname = '';
result.port = null;
if (result.host) {
if (srcPath[0] === '') srcPath[0] = result.host;
else srcPath.unshift(result.host);
}
result.host = '';
if (relative.protocol) {
relative.hostname = null;
relative.port = null;
result.auth = null;
if (relative.host) {
if (relPath[0] === '') relPath[0] = relative.host;
else relPath.unshift(relative.host);
}
relative.host = null;
}
mustEndAbs = mustEndAbs && (relPath[0] === '' || srcPath[0] === '');
}
if (isRelAbs) {
// it's absolute.
if (relative.host || relative.host === '') {
if (result.host !== relative.host) result.auth = null;
result.host = relative.host;
result.port = relative.port;
}
if (relative.hostname || relative.hostname === '') {
if (result.hostname !== relative.hostname) result.auth = null;
result.hostname = relative.hostname;
}
result.search = relative.search;
result.query = relative.query;
srcPath = relPath;
// fall through to the dot-handling below.
} else if (relPath.length) {
// it's relative
// throw away the existing file, and take the new path instead.
if (!srcPath) srcPath = [];
srcPath.pop();
srcPath = srcPath.concat(relPath);
result.search = relative.search;
result.query = relative.query;
} else if (relative.search !== null && relative.search !== undefined) {
// just pull out the search.
// like href='?foo'.
// Put this after the other two cases because it simplifies the booleans
if (noLeadingSlashes) {
result.hostname = result.host = srcPath.shift();
//occasionally the auth can get stuck only in host
//this especially happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
const authInHost =
result.host && result.host.indexOf('@') > 0 && result.host.split('@');
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
result.search = relative.search;
result.query = relative.query;
//to support http.request
if (result.pathname !== null || result.search !== null) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.href = result.format();
return result;
}
if (!srcPath.length) {
// no path at all. easy.
// we've already handled the other stuff above.
result.pathname = null;
//to support http.request
if (result.search) {
result.path = '/' + result.search;
} else {
result.path = null;
}
result.href = result.format();
return result;
}
// if a url ENDs in . or .., then it must get a trailing slash.
// however, if it ends in anything else non-slashy,
// then it must NOT get a trailing slash.
var last = srcPath.slice(-1)[0];
var hasTrailingSlash = (
(result.host || relative.host || srcPath.length > 1) &&
(last === '.' || last === '..') || last === '');
// strip single dots, resolve double dots to parent dir
// if the path tries to go above the root, `up` ends up > 0
var up = 0;
for (var i = srcPath.length - 1; i >= 0; i--) {
last = srcPath[i];
if (last === '.') {
spliceOne(srcPath, i);
} else if (last === '..') {
spliceOne(srcPath, i);
up++;
} else if (up) {
spliceOne(srcPath, i);
up--;
}
}
// if the path is allowed to go above the root, restore leading ..s
if (!mustEndAbs && !removeAllDots) {
for (; up--; up) {
srcPath.unshift('..');
}
}
if (mustEndAbs && srcPath[0] !== '' &&
(!srcPath[0] || srcPath[0].charAt(0) !== '/')) {
srcPath.unshift('');
}
if (hasTrailingSlash && (srcPath.join('/').substr(-1) !== '/')) {
srcPath.push('');
}
var isAbsolute = srcPath[0] === '' ||
(srcPath[0] && srcPath[0].charAt(0) === '/');
// put the host back
if (noLeadingSlashes) {
result.hostname =
result.host = isAbsolute ? '' : srcPath.length ? srcPath.shift() : '';
//occasionally the auth can get stuck only in host
//this especially happens in cases like
//url.resolveObject('mailto:local1@domain1', 'local2@domain2')
const authInHost = result.host && result.host.indexOf('@') > 0 ?
result.host.split('@') : false;
if (authInHost) {
result.auth = authInHost.shift();
result.host = result.hostname = authInHost.shift();
}
}
mustEndAbs = mustEndAbs || (result.host && srcPath.length);
if (mustEndAbs && !isAbsolute) {
srcPath.unshift('');
}
if (!srcPath.length) {
result.pathname = null;
result.path = null;
} else {
result.pathname = srcPath.join('/');
}
//to support request.http
if (result.pathname !== null || result.search !== null) {
result.path = (result.pathname ? result.pathname : '') +
(result.search ? result.search : '');
}
result.auth = relative.auth || result.auth;
result.slashes = result.slashes || relative.slashes;
result.href = result.format();
return result;
};
Url.prototype.parseHost = function parseHost() {
var host = this.host;
var port = portPattern.exec(host);
if (port) {
port = port[0];
if (port !== ':') {
this.port = port.slice(1);
}
host = host.slice(0, host.length - port.length);
}
if (host) this.hostname = host;
};
// About 1.5x faster than the two-arg version of Array#splice().
function spliceOne(list, index) {
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1)
list[i] = list[k];
list.pop();
}
// These characters do not need escaping:
// ! - . _ ~
// ' ( ) * :
// digits
// alpha (uppercase)
// alpha (lowercase)
const noEscapeAuth = [
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x00 - 0x0F
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0x10 - 0x1F
0, 1, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 1, 1, 0, // 0x20 - 0x2F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, // 0x30 - 0x3F
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x40 - 0x4F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, // 0x50 - 0x5F
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0x60 - 0x6F
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 0 // 0x70 - 0x7F
];
function encodeAuth(str) {
// faster encodeURIComponent alternative for encoding auth uri components
var out = '';
var lastPos = 0;
for (var i = 0; i < str.length; ++i) {
var c = str.charCodeAt(i);
// ASCII
if (c < 0x80) {
if (noEscapeAuth[c] === 1)
continue;
if (lastPos < i)
out += str.slice(lastPos, i);
lastPos = i + 1;
out += hexTable[c];
continue;
}
if (lastPos < i)
out += str.slice(lastPos, i);
// Multi-byte characters ...