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denoland-deno/url.js
2018-05-29 00:49:00 -04:00

671 lines
18 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/
* Forked from https://github.com/github/url-polyfill
* Version 16c1aa Feb 9 2018.
*/
(function(scope) {
"use strict";
// feature detect for URL constructor
var hasWorkingUrl = false;
if (!scope.forceJURL) {
try {
var u = new URL("b", "http://a");
u.pathname = "c%20d";
hasWorkingUrl = u.href === "http://a/c%20d";
} catch (e) {}
}
if (hasWorkingUrl) return;
var relative = Object.create(null);
relative["ftp"] = 21;
relative["file"] = 0;
relative["gopher"] = 70;
relative["http"] = 80;
relative["https"] = 443;
relative["ws"] = 80;
relative["wss"] = 443;
var relativePathDotMapping = Object.create(null);
relativePathDotMapping["%2e"] = ".";
relativePathDotMapping[".%2e"] = "..";
relativePathDotMapping["%2e."] = "..";
relativePathDotMapping["%2e%2e"] = "..";
function isRelativeScheme(scheme) {
return relative[scheme] !== undefined;
}
function invalid() {
clear.call(this);
this._isInvalid = true;
}
function IDNAToASCII(h) {
if ("" == h) {
invalid.call(this);
}
// XXX
return h.toLowerCase();
}
function percentEscape(c) {
var unicode = c.charCodeAt(0);
if (
unicode > 0x20 &&
unicode < 0x7f &&
// " # < > ? `
[0x22, 0x23, 0x3c, 0x3e, 0x3f, 0x60].indexOf(unicode) == -1
) {
return c;
}
return encodeURIComponent(c);
}
function percentEscapeQuery(c) {
// XXX This actually needs to encode c using encoding and then
// convert the bytes one-by-one.
var unicode = c.charCodeAt(0);
if (
unicode > 0x20 &&
unicode < 0x7f &&
// " # < > ` (do not escape '?')
[0x22, 0x23, 0x3c, 0x3e, 0x60].indexOf(unicode) == -1
) {
return c;
}
return encodeURIComponent(c);
}
var EOF = undefined,
ALPHA = /[a-zA-Z]/,
ALPHANUMERIC = /[a-zA-Z0-9\+\-\.]/;
function parse(input, stateOverride, base) {
function err(message) {
errors.push(message);
}
var state = stateOverride || "scheme start",
cursor = 0,
buffer = "",
seenAt = false,
seenBracket = false,
errors = [];
loop: while (
(input[cursor - 1] != EOF || cursor == 0) &&
!this._isInvalid
) {
var c = input[cursor];
switch (state) {
case "scheme start":
if (c && ALPHA.test(c)) {
buffer += c.toLowerCase(); // ASCII-safe
state = "scheme";
} else if (!stateOverride) {
buffer = "";
state = "no scheme";
continue;
} else {
err("Invalid scheme.");
break loop;
}
break;
case "scheme":
if (c && ALPHANUMERIC.test(c)) {
buffer += c.toLowerCase(); // ASCII-safe
} else if (":" == c) {
this._scheme = buffer;
buffer = "";
if (stateOverride) {
break loop;
}
if (isRelativeScheme(this._scheme)) {
this._isRelative = true;
}
if ("file" == this._scheme) {
state = "relative";
} else if (
this._isRelative &&
base &&
base._scheme == this._scheme
) {
state = "relative or authority";
} else if (this._isRelative) {
state = "authority first slash";
} else {
state = "scheme data";
}
} else if (!stateOverride) {
buffer = "";
cursor = 0;
state = "no scheme";
continue;
} else if (EOF == c) {
break loop;
} else {
err("Code point not allowed in scheme: " + c);
break loop;
}
break;
case "scheme data":
if ("?" == c) {
query = "?";
state = "query";
} else if ("#" == c) {
this._fragment = "#";
state = "fragment";
} else {
// XXX error handling
if (EOF != c && "\t" != c && "\n" != c && "\r" != c) {
this._schemeData += percentEscape(c);
}
}
break;
case "no scheme":
if (!base || !isRelativeScheme(base._scheme)) {
err("Missing scheme.");
invalid.call(this);
} else {
state = "relative";
continue;
}
break;
case "relative or authority":
if ("/" == c && "/" == input[cursor + 1]) {
state = "authority ignore slashes";
} else {
err("Expected /, got: " + c);
state = "relative";
continue;
}
break;
case "relative":
this._isRelative = true;
if ("file" != this._scheme) this._scheme = base._scheme;
if (EOF == c) {
this._host = base._host;
this._port = base._port;
this._path = base._path.slice();
this._query = base._query;
this._username = base._username;
this._password = base._password;
break loop;
} else if ("/" == c || "\\" == c) {
if ("\\" == c) err("\\ is an invalid code point.");
state = "relative slash";
} else if ("?" == c) {
this._host = base._host;
this._port = base._port;
this._path = base._path.slice();
this._query = "?";
this._username = base._username;
this._password = base._password;
state = "query";
} else if ("#" == c) {
this._host = base._host;
this._port = base._port;
this._path = base._path.slice();
this._query = base._query;
this._fragment = "#";
this._username = base._username;
this._password = base._password;
state = "fragment";
} else {
var nextC = input[cursor + 1];
var nextNextC = input[cursor + 2];
if (
"file" != this._scheme ||
!ALPHA.test(c) ||
(nextC != ":" && nextC != "|") ||
(EOF != nextNextC &&
"/" != nextNextC &&
"\\" != nextNextC &&
"?" != nextNextC &&
"#" != nextNextC)
) {
this._host = base._host;
this._port = base._port;
this._username = base._username;
this._password = base._password;
this._path = base._path.slice();
this._path.pop();
}
state = "relative path";
continue;
}
break;
case "relative slash":
if ("/" == c || "\\" == c) {
if ("\\" == c) {
err("\\ is an invalid code point.");
}
if ("file" == this._scheme) {
state = "file host";
} else {
state = "authority ignore slashes";
}
} else {
if ("file" != this._scheme) {
this._host = base._host;
this._port = base._port;
this._username = base._username;
this._password = base._password;
}
state = "relative path";
continue;
}
break;
case "authority first slash":
if ("/" == c) {
state = "authority second slash";
} else {
err("Expected '/', got: " + c);
state = "authority ignore slashes";
continue;
}
break;
case "authority second slash":
state = "authority ignore slashes";
if ("/" != c) {
err("Expected '/', got: " + c);
continue;
}
break;
case "authority ignore slashes":
if ("/" != c && "\\" != c) {
state = "authority";
continue;
} else {
err("Expected authority, got: " + c);
}
break;
case "authority":
if ("@" == c) {
if (seenAt) {
err("@ already seen.");
buffer += "%40";
}
seenAt = true;
for (var i = 0; i < buffer.length; i++) {
var cp = buffer[i];
if ("\t" == cp || "\n" == cp || "\r" == cp) {
err("Invalid whitespace in authority.");
continue;
}
// XXX check URL code points
if (":" == cp && null === this._password) {
this._password = "";
continue;
}
var tempC = percentEscape(cp);
null !== this._password
? (this._password += tempC)
: (this._username += tempC);
}
buffer = "";
} else if (
EOF == c ||
"/" == c ||
"\\" == c ||
"?" == c ||
"#" == c
) {
cursor -= buffer.length;
buffer = "";
state = "host";
continue;
} else {
buffer += c;
}
break;
case "file host":
if (EOF == c || "/" == c || "\\" == c || "?" == c || "#" == c) {
if (
buffer.length == 2 &&
ALPHA.test(buffer[0]) &&
(buffer[1] == ":" || buffer[1] == "|")
) {
state = "relative path";
} else if (buffer.length == 0) {
state = "relative path start";
} else {
this._host = IDNAToASCII.call(this, buffer);
buffer = "";
state = "relative path start";
}
continue;
} else if ("\t" == c || "\n" == c || "\r" == c) {
err("Invalid whitespace in file host.");
} else {
buffer += c;
}
break;
case "host":
case "hostname":
if (":" == c && !seenBracket) {
// XXX host parsing
this._host = IDNAToASCII.call(this, buffer);
buffer = "";
state = "port";
if ("hostname" == stateOverride) {
break loop;
}
} else if (
EOF == c ||
"/" == c ||
"\\" == c ||
"?" == c ||
"#" == c
) {
this._host = IDNAToASCII.call(this, buffer);
buffer = "";
state = "relative path start";
if (stateOverride) {
break loop;
}
continue;
} else if ("\t" != c && "\n" != c && "\r" != c) {
if ("[" == c) {
seenBracket = true;
} else if ("]" == c) {
seenBracket = false;
}
buffer += c;
} else {
err("Invalid code point in host/hostname: " + c);
}
break;
case "port":
if (/[0-9]/.test(c)) {
buffer += c;
} else if (
EOF == c ||
"/" == c ||
"\\" == c ||
"?" == c ||
"#" == c ||
stateOverride
) {
if ("" != buffer) {
var temp = parseInt(buffer, 10);
if (temp != relative[this._scheme]) {
this._port = temp + "";
}
buffer = "";
}
if (stateOverride) {
break loop;
}
state = "relative path start";
continue;
} else if ("\t" == c || "\n" == c || "\r" == c) {
err("Invalid code point in port: " + c);
} else {
invalid.call(this);
}
break;
case "relative path start":
if ("\\" == c) err("'\\' not allowed in path.");
state = "relative path";
if ("/" != c && "\\" != c) {
continue;
}
break;
case "relative path":
if (
EOF == c ||
"/" == c ||
"\\" == c ||
(!stateOverride && ("?" == c || "#" == c))
) {
if ("\\" == c) {
err("\\ not allowed in relative path.");
}
var tmp;
if ((tmp = relativePathDotMapping[buffer.toLowerCase()])) {
buffer = tmp;
}
if (".." == buffer) {
this._path.pop();
if ("/" != c && "\\" != c) {
this._path.push("");
}
} else if ("." == buffer && "/" != c && "\\" != c) {
this._path.push("");
} else if ("." != buffer) {
if (
"file" == this._scheme &&
this._path.length == 0 &&
buffer.length == 2 &&
ALPHA.test(buffer[0]) &&
buffer[1] == "|"
) {
buffer = buffer[0] + ":";
}
this._path.push(buffer);
}
buffer = "";
if ("?" == c) {
this._query = "?";
state = "query";
} else if ("#" == c) {
this._fragment = "#";
state = "fragment";
}
} else if ("\t" != c && "\n" != c && "\r" != c) {
buffer += percentEscape(c);
}
break;
case "query":
if (!stateOverride && "#" == c) {
this._fragment = "#";
state = "fragment";
} else if (EOF != c && "\t" != c && "\n" != c && "\r" != c) {
this._query += percentEscapeQuery(c);
}
break;
case "fragment":
if (EOF != c && "\t" != c && "\n" != c && "\r" != c) {
this._fragment += c;
}
break;
}
cursor++;
}
}
function clear() {
this._scheme = "";
this._schemeData = "";
this._username = "";
this._password = null;
this._host = "";
this._port = "";
this._path = [];
this._query = "";
this._fragment = "";
this._isInvalid = false;
this._isRelative = false;
}
// Does not process domain names or IP addresses.
// Does not handle encoding for the query parameter.
function jURL(url, base /* , encoding */) {
if (base !== undefined && !(base instanceof jURL))
base = new jURL(String(base));
url = String(url);
this._url = url;
clear.call(this);
var input = url.replace(/^[ \t\r\n\f]+|[ \t\r\n\f]+$/g, "");
// encoding = encoding || 'utf-8'
parse.call(this, input, null, base);
}
jURL.prototype = {
toString: function() {
return this.href;
},
get href() {
if (this._isInvalid) return this._url;
var authority = "";
if ("" != this._username || null != this._password) {
authority =
this._username +
(null != this._password ? ":" + this._password : "") +
"@";
}
return (
this.protocol +
(this._isRelative ? "//" + authority + this.host : "") +
this.pathname +
this._query +
this._fragment
);
},
set href(href) {
clear.call(this);
parse.call(this, href);
},
get protocol() {
return this._scheme + ":";
},
set protocol(protocol) {
if (this._isInvalid) return;
parse.call(this, protocol + ":", "scheme start");
},
get host() {
return this._isInvalid
? ""
: this._port
? this._host + ":" + this._port
: this._host;
},
set host(host) {
if (this._isInvalid || !this._isRelative) return;
parse.call(this, host, "host");
},
get hostname() {
return this._host;
},
set hostname(hostname) {
if (this._isInvalid || !this._isRelative) return;
parse.call(this, hostname, "hostname");
},
get port() {
return this._port;
},
set port(port) {
if (this._isInvalid || !this._isRelative) return;
parse.call(this, port, "port");
},
get pathname() {
return this._isInvalid
? ""
: this._isRelative
? "/" + this._path.join("/")
: this._schemeData;
},
set pathname(pathname) {
if (this._isInvalid || !this._isRelative) return;
this._path = [];
parse.call(this, pathname, "relative path start");
},
get search() {
return this._isInvalid || !this._query || "?" == this._query
? ""
: this._query;
},
set search(search) {
if (this._isInvalid || !this._isRelative) return;
this._query = "?";
if ("?" == search[0]) search = search.slice(1);
parse.call(this, search, "query");
},
get hash() {
return this._isInvalid || !this._fragment || "#" == this._fragment
? ""
: this._fragment;
},
set hash(hash) {
if (this._isInvalid) return;
this._fragment = "#";
if ("#" == hash[0]) hash = hash.slice(1);
parse.call(this, hash, "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";
}
host = this.host;
if (!host) {
return "";
}
return this._scheme + "://" + host;
}
};
// Copy over the static methods
var OriginalURL = scope.URL;
if (OriginalURL) {
jURL.createObjectURL = function(blob) {
// IE extension allows a second optional options argument.
// http://msdn.microsoft.com/en-us/library/ie/hh772302(v=vs.85).aspx
return OriginalURL.createObjectURL.apply(OriginalURL, arguments);
};
jURL.revokeObjectURL = function(url) {
OriginalURL.revokeObjectURL(url);
};
}
scope.URL = jURL;
})(window);