"use strict";
const punycode = require("punycode");
const tr46 = require("tr46");
const specialSchemes = {
ftp: 21,
file: null,
gopher: 70,
http: 80,
https: 443,
ws: 80,
wss: 443
};
const failure = Symbol("failure");
function countSymbols(str) {
return punycode.ucs2.decode(str).length;
}
function at(input, idx) {
const c = input[idx];
return isNaN(c) ? undefined : String.fromCodePoint(c);
}
function isASCIIDigit(c) {
return c >= 0x30 && c <= 0x39;
}
function isASCIIAlpha(c) {
return (c >= 0x41 && c <= 0x5A) || (c >= 0x61 && c <= 0x7A);
}
function isASCIIAlphanumeric(c) {
return isASCIIAlpha(c) || isASCIIDigit(c);
}
function isASCIIHex(c) {
return isASCIIDigit(c) || (c >= 0x41 && c <= 0x46) || (c >= 0x61 && c <= 0x66);
}
function isSingleDot(buffer) {
return buffer === "." || buffer.toLowerCase() === "%2e";
}
function isDoubleDot(buffer) {
buffer = buffer.toLowerCase();
return buffer === ".." || buffer === "%2e." || buffer === ".%2e" || buffer === "%2e%2e";
}
function isWindowsDriveLetterCodePoints(cp1, cp2) {
return isASCIIAlpha(cp1) && (cp2 === 58 || cp2 === 124);
}
function isWindowsDriveLetterString(string) {
return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && (string[1] === ":" || string[1] === "|");
}
function isNormalizedWindowsDriveLetterString(string) {
return string.length === 2 && isASCIIAlpha(string.codePointAt(0)) && string[1] === ":";
}
function containsForbiddenHostCodePoint(string) {
return string.search(/\u0000|\u0009|\u000A|\u000D|\u0020|#|%|\/|:|\?|@|\[|\\|\]/) !== -1;
}
function containsForbiddenHostCodePointExcludingPercent(string) {
return string.search(/\u0000|\u0009|\u000A|\u000D|\u0020|#|\/|:|\?|@|\[|\\|\]/) !== -1;
}
function isSpecialScheme(scheme) {
return specialSchemes[scheme] !== undefined;
}
function isSpecial(url) {
return isSpecialScheme(url.scheme);
}
function defaultPort(scheme) {
return specialSchemes[scheme];
}
function percentEncode(c) {
let hex = c.toString(16).toUpperCase();
if (hex.length === 1) {
hex = "0" + hex;
}
return "%" + hex;
}
function utf8PercentEncode(c) {
const buf = new Buffer(c);
let str = "";
for (let i = 0; i < buf.length; ++i) {
str += percentEncode(buf[i]);
}
return str;
}
function utf8PercentDecode(str) {
const input = new Buffer(str);
const output = [];
for (let i = 0; i < input.length; ++i) {
if (input[i] !== 37) {
output.push(input[i]);
} else if (input[i] === 37 && isASCIIHex(input[i + 1]) && isASCIIHex(input[i + 2])) {
output.push(parseInt(input.slice(i + 1, i + 3).toString(), 16));
i += 2;
} else {
output.push(input[i]);
}
}
return new Buffer(output).toString();
}
function isC0ControlPercentEncode(c) {
return c <= 0x1F || c > 0x7E;
}
const extraPathPercentEncodeSet = new Set([32, 34, 35, 60, 62, 63, 96, 123, 125]);
function isPathPercentEncode(c) {
return isC0ControlPercentEncode(c) || extraPathPercentEncodeSet.has(c);
}
const extraUserinfoPercentEncodeSet =
new Set([47, 58, 59, 61, 64, 91, 92, 93, 94, 124]);
function isUserinfoPercentEncode(c) {
return isPathPercentEncode(c) || extraUserinfoPercentEncodeSet.has(c);
}
function percentEncodeChar(c, encodeSetPredicate) {
const cStr = String.fromCodePoint(c);
if (encodeSetPredicate(c)) {
return utf8PercentEncode(cStr);
}
return cStr;
}
function parseIPv4Number(input) {
let R = 10;
if (input.length >= 2 && input.charAt(0) === "0" && input.charAt(1).toLowerCase() === "x") {
input = input.substring(2);
R = 16;
} else if (input.length >= 2 && input.charAt(0) === "0") {
input = input.substring(1);
R = 8;
}
if (input === "") {
return 0;
}
const regex = R === 10 ? /[^0-9]/ : (R === 16 ? /[^0-9A-Fa-f]/ : /[^0-7]/);
if (regex.test(input)) {
return failure;
}
return parseInt(input, R);
}
function parseIPv4(input) {
const parts = input.split(".");
if (parts[parts.length - 1] === "") {
if (parts.length > 1) {
parts.pop();
}
}
if (parts.length > 4) {
return input;
}
const numbers = [];
for (const part of parts) {
if (part === "") {
return input;
}
const n = parseIPv4Number(part);
if (n === failure) {
return input;
}
numbers.push(n);
}
for (let i = 0; i < numbers.length - 1; ++i) {
if (numbers[i] > 255) {
return failure;
}
}
if (numbers[numbers.length - 1] >= Math.pow(256, 5 - numbers.length)) {
return failure;
}
let ipv4 = numbers.pop();
let counter = 0;
for (const n of numbers) {
ipv4 += n * Math.pow(256, 3 - counter);
++counter;
}
return ipv4;
}
function serializeIPv4(address) {
let output = "";
let n = address;
for (let i = 1; i <= 4; ++i) {
output = String(n % 256) + output;
if (i !== 4) {
output = "." + output;
}
n = Math.floor(n / 256);
}
return output;
}
function parseIPv6(input) {
const address = [0, 0, 0, 0, 0, 0, 0, 0];
let pieceIndex = 0;
let compress = null;
let pointer = 0;
input = punycode.ucs2.decode(input);
if (input[pointer] === 58) {
if (input[pointer + 1] !== 58) {
return failure;
}
pointer += 2;
++pieceIndex;
compress = pieceIndex;
}
while (pointer < input.length) {
if (pieceIndex === 8) {
return failure;
}
if (input[pointer] === 58) {
if (compress !== null) {
return failure;
}
++pointer;
++pieceIndex;
compress = pieceIndex;
continue;
}
let value = 0;
let length = 0;
while (length < 4 && isASCIIHex(input[pointer])) {
value = value * 0x10 + parseInt(at(input, pointer), 16);
++pointer;
++length;
}
if (input[pointer] === 46) {
if (length === 0) {
return failure;
}
pointer -= length;
if (pieceIndex > 6) {
return failure;
}
let numbersSeen = 0;
while (input[pointer] !== undefined) {
let ipv4Piece = null;
if (numbersSeen > 0) {
if (input[pointer] === 46 && numbersSeen < 4) {
++pointer;
} else {
return failure;
}
}
if (!isASCIIDigit(input[pointer])) {
return failure;
}
while (isASCIIDigit(input[pointer])) {
const number = parseInt(at(input, pointer));
if (ipv4Piece === null) {
ipv4Piece = number;
} else if (ipv4Piece === 0) {
return failure;
} else {
ipv4Piece = ipv4Piece * 10 + number;
}
if (ipv4Piece > 255) {
return failure;
}
++pointer;
}
address[pieceIndex] = address[pieceIndex] * 0x100 + ipv4Piece;
++numbersSeen;
if (numbersSeen === 2 || numbersSeen === 4) {
++pieceIndex;
}
}
if (numbersSeen !== 4) {
return failure;
}
break;
} else if (input[pointer] === 58) {
++pointer;
if (input[pointer] === undefined) {
return failure;
}
} else if (input[pointer] !== undefined) {
return failure;
}
address[pieceIndex] = value;
++pieceIndex;
}
if (compress !== null) {
let swaps = pieceIndex - compress;
pieceIndex = 7;
while (pieceIndex !== 0 && swaps > 0) {
const temp = address[compress + swaps - 1];
address[compress + swaps - 1] = address[pieceIndex];
address[pieceIndex] = temp;
--pieceIndex;
--swaps;
}
} else if (compress === null && pieceIndex !== 8) {
return failure;
}
return address;
}
function serializeIPv6(address) {
let output = "";
const seqResult = findLongestZeroSequence(address);
const compress = seqResult.idx;
let ignore0 = false;
for (let pieceIndex = 0; pieceIndex <= 7; ++pieceIndex) {
if (ignore0 && address[pieceIndex] === 0) {
continue;
} else if (ignore0) {
ignore0 = false;
}
if (compress === pieceIndex) {
const separator = pieceIndex === 0 ? "::" : ":";
output += separator;
ignore0 = true;
continue;
}
output += address[pieceIndex].toString(16);
if (pieceIndex !== 7) {
output += ":";
}
}
return output;
}
function parseHost(input, isSpecialArg) {
if (input[0] === "[") {
if (input[input.length - 1] !== "]") {
return failure;
}
return parseIPv6(input.substring(1, input.length - 1));
}
if (!isSpecialArg) {
return parseOpaqueHost(input);
}
const domain = utf8PercentDecode(input);
const asciiDomain = tr46.toASCII(domain, false, tr46.PROCESSING_OPTIONS.NONTRANSITIONAL, false);
if (asciiDomain === null) {
return failure;
}
if (containsForbiddenHostCodePoint(asciiDomain)) {
return failure;
}
const ipv4Host = parseIPv4(asciiDomain);
if (typeof ipv4Host === "number" || ipv4Host === failure) {
return ipv4Host;
}
return asciiDomain;
}
function parseOpaqueHost(input) {
if (containsForbiddenHostCodePointExcludingPercent(input)) {
return failure;
}
let output = "";
const decoded = punycode.ucs2.decode(input);
for (let i = 0; i < decoded.length; ++i) {
output += percentEncodeChar(decoded[i], isC0ControlPercentEncode);
}
return output;
}
function findLongestZeroSequence(arr) {
let maxIdx = null;
let maxLen = 1; // only find elements > 1
let currStart = null;
let currLen = 0;
for (let i = 0; i < arr.length; ++i) {
if (arr[i] !== 0) {
if (currLen > maxLen) {
maxIdx = currStart;
maxLen = currLen;
}
currStart = null;
currLen = 0;
} else {
if (currStart === null) {
currStart = i;
}
++currLen;
}
}
// if trailing zeros
if (currLen > maxLen) {
maxIdx = currStart;
maxLen = currLen;
}
return {
idx: maxIdx,
len: maxLen
};
}
function serializeHost(host) {
if (typeof host === "number") {
return serializeIPv4(host);
}
// IPv6 serializer
if (host instanceof Array) {
return "[" + serializeIPv6(host) + "]";
}
return host;
}
function trimControlChars(url) {
return url.replace(/^[\u0000-\u001F\u0020]+|[\u0000-\u001F\u0020]+$/g, "");
}
function trimTabAndNewline(url) {
return url.replace(/\u0009|\u000A|\u000D/g, "");
}
function shortenPath(url) {
const path = url.path;
if (path.length === 0) {
return;
}
if (url.scheme === "file" && path.length === 1 && isNormalizedWindowsDriveLetter(path[0])) {
return;
}
path.pop();
}
function includesCredentials(url) {
return url.username !== "" || url.password !== "";
}
function cannotHaveAUsernamePasswordPort(url) {
return url.host === null || url.host === "" || url.cannotBeABaseURL || url.scheme === "file";
}
function isNormalizedWindowsDriveLetter(string) {
return /^[A-Za-z]:$/.test(string);
}
function URLStateMachine(input, base, encodingOverride, url, stateOverride) {
this.pointer = 0;
this.input = input;
this.base = base || null;
this.encodingOverride = encodingOverride || "utf-8";
this.stateOverride = stateOverride;
this.url = url;
this.failure = false;
this.parseError = false;
if (!this.url) {
this.url = {
scheme: "",
username: "",
password: "",
host: null,
port: null,
path: [],
query: null,
fragment: null,
cannotBeABaseURL: false
};
const res = trimControlChars(this.input);
if (res !== this.input) {
this.parseError = true;
}
this.input = res;
}
const res = trimTabAndNewline(this.input);
if (res !== this.input) {
this.parseError = true;
}
this.input = res;
this.state = stateOverride || "scheme start";
this.buffer = "";
this.atFlag = false;
this.arrFlag = false;
this.passwordTokenSeenFlag = false;
this.input = punycode.ucs2.decode(this.input);
for (; this.pointer <= this.input.length; ++this.pointer) {
const c = this.input[this.pointer];
const cStr = isNaN(c) ? undefined : String.fromCodePoint(c);
// exec state machine
const ret = this["parse " + this.state](c, cStr);
if (!ret) {
break; // terminate algorithm
} else if (ret === failure) {
this.failure = true;
break;
}
}
}
URLStateMachine.prototype["parse scheme start"] = function parseSchemeStart(c, cStr) {
if (isASCIIAlpha(c)) {
this.buffer += cStr.toLowerCase();
this.state = "scheme";
} else if (!this.stateOverride) {
this.state = "no scheme";
--this.pointer;
} else {
this.parseError = true;
return failure;
}
return true;
};
URLStateMachine.prototype["parse scheme"] = function parseScheme(c, cStr) {
if (isASCIIAlphanumeric(c) || c === 43 || c === 45 || c === 46) {
this.buffer += cStr.toLowerCase();
} else if (c === 58) {
if (this.stateOverride) {
if (isSpecial(this.url) && !isSpecialScheme(this.buffer)) {
return false;
}
if (!isSpecial(this.url) && isSpecialScheme(this.buffer)) {
return false;
}
if ((includesCredentials(this.url) || this.url.port !== null) && this.buffer === "file") {
return false;
}
if (this.url.scheme === "file" && (this.url.host === "" || this.url.host === null)) {
return false;
}
}
this.url.scheme = this.buffer;
this.buffer = "";
if (this.stateOverride) {
return false;
}
if (this.url.scheme === "file") {
if (this.input[this.pointer + 1] !== 47 || this.input[this.pointer + 2] !== 47) {
this.parseError = true;
}
this.state = "file";
} else if (isSpecial(this.url) && this.base !== null && this.base.scheme === this.url.scheme) {
this.state = "special relative or authority";
} else if (isSpecial(this.url)) {
this.state = "special authority slashes";
} else if (this.input[this.pointer + 1] === 47) {
this.state = "path or authority";
++this.pointer;
} else {
this.url.cannotBeABaseURL = true;
this.url.path.push("");
this.state = "cannot-be-a-base-URL path";
}
} else if (!this.stateOverride) {
this.buffer = "";
this.state = "no scheme";
this.pointer = -1;
} else {
this.parseError = true;
return failure;
}
return true;
};
URLStateMachine.prototype["parse no scheme"] = function parseNoScheme(c) {
if (this.base === null || (this.base.cannotBeABaseURL && c !== 35)) {
return failure;
} else if (this.base.cannotBeABaseURL && c === 35) {
this.url.scheme = this.base.scheme;
this.url.path = this.base.path.slice();
this.url.query = this.base.query;
this.url.fragment = "";
this.url.cannotBeABaseURL = true;
this.state = "fragment";
} else if (this.base.scheme === "file") {
this.state = "file";
--this.pointer;
} else {
this.state = "relative";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse special relative or authority"] = function parseSpecialRelativeOrAuthority(c) {
if (c === 47 && this.input[this.pointer + 1] === 47) {
this.state = "special authority ignore slashes";
++this.pointer;
} else {
this.parseError = true;
this.state = "relative";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse path or authority"] = function parsePathOrAuthority(c) {
if (c === 47) {
this.state = "authority";
} else {
this.state = "path";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse relative"] = function parseRelative(c) {
this.url.scheme = this.base.scheme;
if (isNaN(c)) {
this.url.username = this.base.username;
this.url.password = this.base.password;
this.url.host = this.base.host;
this.url.port = this.base.port;
this.url.path = this.base.path.slice();
this.url.query = this.base.query;
} else if (c === 47) {
this.state = "relative slash";
} else if (c === 63) {
this.url.username = this.base.username;
this.url.password = this.base.password;
this.url.host = this.base.host;
this.url.port = this.base.port;
this.url.path = this.base.path.slice();
this.url.query = "";
this.state = "query";
} else if (c === 35) {
this.url.username = this.base.username;
this.url.password = this.base.password;
this.url.host = this.base.host;
this.url.port = this.base.port;
this.url.path = this.base.path.slice();
this.url.query = this.base.query;
this.url.fragment = "";
this.state = "fragment";
} else if (isSpecial(this.url) && c === 92) {
this.parseError = true;
this.state = "relative slash";
} else {
this.url.username = this.base.username;
this.url.password = this.base.password;
this.url.host = this.base.host;
this.url.port = this.base.port;
this.url.path = this.base.path.slice(0, this.base.path.length - 1);
this.state = "path";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse relative slash"] = function parseRelativeSlash(c) {
if (isSpecial(this.url) && (c === 47 || c === 92)) {
if (c === 92) {
this.parseError = true;
}
this.state = "special authority ignore slashes";
} else if (c === 47) {
this.state = "authority";
} else {
this.url.username = this.base.username;
this.url.password = this.base.password;
this.url.host = this.base.host;
this.url.port = this.base.port;
this.state = "path";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse special authority slashes"] = function parseSpecialAuthoritySlashes(c) {
if (c === 47 && this.input[this.pointer + 1] === 47) {
this.state = "special authority ignore slashes";
++this.pointer;
} else {
this.parseError = true;
this.state = "special authority ignore slashes";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse special authority ignore slashes"] = function parseSpecialAuthorityIgnoreSlashes(c) {
if (c !== 47 && c !== 92) {
this.state = "authority";
--this.pointer;
} else {
this.parseError = true;
}
return true;
};
URLStateMachine.prototype["parse authority"] = function parseAuthority(c, cStr) {
if (c === 64) {
this.parseError = true;
if (this.atFlag) {
this.buffer = "%40" + this.buffer;
}
this.atFlag = true;
// careful, this is based on buffer and has its own pointer (this.pointer != pointer) and inner chars
const len = countSymbols(this.buffer);
for (let pointer = 0; pointer < len; ++pointer) {
const codePoint = this.buffer.codePointAt(pointer);
if (codePoint === 58 && !this.passwordTokenSeenFlag) {
this.passwordTokenSeenFlag = true;
continue;
}
const encodedCodePoints = percentEncodeChar(codePoint, isUserinfoPercentEncode);
if (this.passwordTokenSeenFlag) {
this.url.password += encodedCodePoints;
} else {
this.url.username += encodedCodePoints;
}
}
this.buffer = "";
} else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||
(isSpecial(this.url) && c === 92)) {
if (this.atFlag && this.buffer === "") {
this.parseError = true;
return failure;
}
this.pointer -= countSymbols(this.buffer) + 1;
this.buffer = "";
this.state = "host";
} else {
this.buffer += cStr;
}
return true;
};
URLStateMachine.prototype["parse hostname"] =
URLStateMachine.prototype["parse host"] = function parseHostName(c, cStr) {
if (this.stateOverride && this.url.scheme === "file") {
--this.pointer;
this.state = "file host";
} else if (c === 58 && !this.arrFlag) {
if (this.buffer === "") {
this.parseError = true;
return failure;
}
const host = parseHost(this.buffer, isSpecial(this.url));
if (host === failure) {
return failure;
}
this.url.host = host;
this.buffer = "";
this.state = "port";
if (this.stateOverride === "hostname") {
return false;
}
} else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||
(isSpecial(this.url) && c === 92)) {
--this.pointer;
if (isSpecial(this.url) && this.buffer === "") {
this.parseError = true;
return failure;
} else if (this.stateOverride && this.buffer === "" &&
(includesCredentials(this.url) || this.url.port !== null)) {
this.parseError = true;
return false;
}
const host = parseHost(this.buffer, isSpecial(this.url));
if (host === failure) {
return failure;
}
this.url.host = host;
this.buffer = "";
this.state = "path start";
if (this.stateOverride) {
return false;
}
} else {
if (c === 91) {
this.arrFlag = true;
} else if (c === 93) {
this.arrFlag = false;
}
this.buffer += cStr;
}
return true;
};
URLStateMachine.prototype["parse port"] = function parsePort(c, cStr) {
if (isASCIIDigit(c)) {
this.buffer += cStr;
} else if (isNaN(c) || c === 47 || c === 63 || c === 35 ||
(isSpecial(this.url) && c === 92) ||
this.stateOverride) {
if (this.buffer !== "") {
const port = parseInt(this.buffer);
if (port > Math.pow(2, 16) - 1) {
this.parseError = true;
return failure;
}
this.url.port = port === defaultPort(this.url.scheme) ? null : port;
this.buffer = "";
}
if (this.stateOverride) {
return false;
}
this.state = "path start";
--this.pointer;
} else {
this.parseError = true;
return failure;
}
return true;
};
const fileOtherwiseCodePoints = new Set([47, 92, 63, 35]);
URLStateMachine.prototype["parse file"] = function parseFile(c) {
this.url.scheme = "file";
if (c === 47 || c === 92) {
if (c === 92) {
this.parseError = true;
}
this.state = "file slash";
} else if (this.base !== null && this.base.scheme === "file") {
if (isNaN(c)) {
this.url.host = this.base.host;
this.url.path = this.base.path.slice();
this.url.query = this.base.query;
} else if (c === 63) {
this.url.host = this.base.host;
this.url.path = this.base.path.slice();
this.url.query = "";
this.state = "query";
} else if (c === 35) {
this.url.host = this.base.host;
this.url.path = this.base.path.slice();
this.url.query = this.base.query;
this.url.fragment = "";
this.state = "fragment";
} else {
if (this.input.length - this.pointer - 1 === 0 || // remaining consists of 0 code points
!isWindowsDriveLetterCodePoints(c, this.input[this.pointer + 1]) ||
(this.input.length - this.pointer - 1 >= 2 && // remaining has at least 2 code points
!fileOtherwiseCodePoints.has(this.input[this.pointer + 2]))) {
this.url.host = this.base.host;
this.url.path = this.base.path.slice();
shortenPath(this.url);
} else {
this.parseError = true;
}
this.state = "path";
--this.pointer;
}
} else {
this.state = "path";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse file slash"] = function parseFileSlash(c) {
if (c === 47 || c === 92) {
if (c === 92) {
this.parseError = true;
}
this.state = "file host";
} else {
if (this.base !== null && this.base.scheme === "file") {
if (isNormalizedWindowsDriveLetterString(this.base.path[0])) {
this.url.path.push(this.base.path[0]);
} else {
this.url.host = this.base.host;
}
}
this.state = "path";
--this.pointer;
}
return true;
};
URLStateMachine.prototype["parse file host"] = function parseFileHost(c, cStr) {
if (isNaN(c) || c === 47 || c === 92 || c === 63 || c === 35) {
--this.pointer;
if (!this.stateOverride && isWindowsDriveLetterString(this.buffer)) {
this.parseError = true;
this.state = "path";
} else if (this.buffer === "") {
this.url.host = "";
if (this.stateOverride) {
return false;
}
this.state = "path start";
} else {
let host = parseHost(this.buffer, isSpecial(this.url));
if (host === failure) {
return failure;
}
if (host === "localhost") {
host = "";
}
this.url.host = host;
if (this.stateOverride) {
return false;
}
this.buffer = "";
this.state = "path start";
}
} else {
this.buffer += cStr;
}
return true;
};
URLStateMachine.prototype["parse path start"] = function parsePathStart(c) {
if (isSpecial(this.url)) {
if (c === 92) {
this.parseError = true;
}
this.state = "path";
if (c !== 47 && c !== 92) {
--this.pointer;
}
} else if (!this.stateOverride && c === 63) {
this.url.query = "";
this.state = "query";
} else if (!this.stateOverride && c === 35) {
this.url.fragment = "";
this.state = "fragment";
} else if (c !== undefined) {
this.state = "path";
if (c !== 47) {
--this.pointer;
}
}
return true;
};
URLStateMachine.prototype["parse path"] = function parsePath(c) {
if (isNaN(c) || c === 47 || (isSpecial(this.url) && c === 92) ||
(!this.stateOverride && (c === 63 || c === 35))) {
if (isSpecial(this.url) && c === 92) {
this.parseError = true;
}
if (isDoubleDot(this.buffer)) {
shortenPath(this.url);
if (c !== 47 && !(isSpecial(this.url) && c === 92)) {
this.url.path.push("");
}
} else if (isSingleDot(this.buffer) && c !== 47 &&
!(isSpecial(this.url) && c === 92)) {
this.url.path.push("");
} else if (!isSingleDot(this.buffer)) {
if (this.url.scheme === "file" && this.url.path.length === 0 && isWindowsDriveLetterString(this.buffer)) {
if (this.url.host !== "" && this.url.host !== null) {
this.parseError = true;
this.url.host = "";
}
this.buffer = this.buffer[0] + ":";
}
this.url.path.push(this.buffer);
}
this.buffer = "";
if (this.url.scheme === "file" && (c === undefined || c === 63 || c === 35)) {
while (this.url.path.length > 1 && this.url.path[0] === "") {
this.parseError = true;
this.url.path.shift();
}
}
if (c === 63) {
this.url.query = "";
this.state = "query";
}
if (c === 35) {
this.url.fragment = "";
this.state = "fragment";
}
} else {
// TODO: If c is not a URL code point and not "%", parse error.
if (c === 37 &&
(!isASCIIHex(this.input[this.pointer + 1]) ||
!isASCIIHex(this.input[this.pointer + 2]))) {
this.parseError = true;
}
this.buffer += percentEncodeChar(c, isPathPercentEncode);
}
return true;
};
URLStateMachine.prototype["parse cannot-be-a-base-URL path"] = function parseCannotBeABaseURLPath(c) {
if (c === 63) {
this.url.query = "";
this.state = "query";
} else if (c === 35) {
this.url.fragment = "";
this.state = "fragment";
} else {
// TODO: Add: not a URL code point
if (!isNaN(c) && c !== 37) {
this.parseError = true;
}
if (c === 37 &&
(!isASCIIHex(this.input[this.pointer + 1]) ||
!isASCIIHex(this.input[this.pointer + 2]))) {
this.parseError = true;
}
if (!isNaN(c)) {
this.url.path[0] = this.url.path[0] + percentEncodeChar(c, isC0ControlPercentEncode);
}
}
return true;
};
URLStateMachine.prototype["parse query"] = function parseQuery(c, cStr) {
if (isNaN(c) || (!this.stateOverride && c === 35)) {
if (!isSpecial(this.url) || this.url.scheme === "ws" || this.url.scheme === "wss") {
this.encodingOverride = "utf-8";
}
const buffer = new Buffer(this.buffer); // TODO: Use encoding override instead
for (let i = 0; i < buffer.length; ++i) {
if (buffer[i] < 0x21 || buffer[i] > 0x7E || buffer[i] === 0x22 || buffer[i] === 0x23 ||
buffer[i] === 0x3C || buffer[i] === 0x3E) {
this.url.query += percentEncode(buffer[i]);
} else {
this.url.query += String.fromCodePoint(buffer[i]);
}
}
this.buffer = "";
if (c === 35) {
this.url.fragment = "";
this.state = "fragment";
}
} else {
// TODO: If c is not a URL code point and not "%", parse error.
if (c === 37 &&
(!isASCIIHex(this.input[this.pointer + 1]) ||
!isASCIIHex(this.input[this.pointer + 2]))) {
this.parseError = true;
}
this.buffer += cStr;
}
return true;
};
URLStateMachine.prototype["parse fragment"] = function parseFragment(c) {
if (isNaN(c)) { // do nothing
} else if (c === 0x0) {
this.parseError = true;
} else {
// TODO: If c is not a URL code point and not "%", parse error.
if (c === 37 &&
(!isASCIIHex(this.input[this.pointer + 1]) ||
!isASCIIHex(this.input[this.pointer + 2]))) {
this.parseError = true;
}
this.url.fragment += percentEncodeChar(c, isC0ControlPercentEncode);
}
return true;
};
function serializeURL(url, excludeFragment) {
let output = url.scheme + ":";
if (url.host !== null) {
output += "//";
if (url.username !== "" || url.password !== "") {
output += url.username;
if (url.password !== "") {
output += ":" + url.password;
}
output += "@";
}
output += serializeHost(url.host);
if (url.port !== null) {
output += ":" + url.port;
}
} else if (url.host === null && url.scheme === "file") {
output += "//";
}
if (url.cannotBeABaseURL) {
output += url.path[0];
} else {
for (const string of url.path) {
output += "/" + string;
}
}
if (url.query !== null) {
output += "?" + url.query;
}
if (!excludeFragment && url.fragment !== null) {
output += "#" + url.fragment;
}
return output;
}
function serializeOrigin(tuple) {
let result = tuple.scheme + "://";
result += serializeHost(tuple.host);
if (tuple.port !== null) {
result += ":" + tuple.port;
}
return result;
}
module.exports.serializeURL = serializeURL;
module.exports.serializeURLOrigin = function (url) {
// https://url.spec.whatwg.org/#concept-url-origin
switch (url.scheme) {
case "blob":
try {
return module.exports.serializeURLOrigin(module.exports.parseURL(url.path[0]));
} catch (e) {
// serializing an opaque origin returns "null"
return "null";
}
case "ftp":
case "gopher":
case "http":
case "https":
case "ws":
case "wss":
return serializeOrigin({
scheme: url.scheme,
host: url.host,
port: url.port
});
case "file":
// spec says "exercise to the reader", chrome says "file://"
return "file://";
default:
// serializing an opaque origin returns "null"
return "null";
}
};
module.exports.basicURLParse = function (input, options) {
if (options === undefined) {
options = {};
}
const usm = new URLStateMachine(input, options.baseURL, options.encodingOverride, options.url, options.stateOverride);
if (usm.failure) {
return "failure";
}
return usm.url;
};
module.exports.setTheUsername = function (url, username) {
url.username = "";
const decoded = punycode.ucs2.decode(username);
for (let i = 0; i < decoded.length; ++i) {
url.username += percentEncodeChar(decoded[i], isUserinfoPercentEncode);
}
};
module.exports.setThePassword = function (url, password) {
url.password = "";
const decoded = punycode.ucs2.decode(password);
for (let i = 0; i < decoded.length; ++i) {
url.password += percentEncodeChar(decoded[i], isUserinfoPercentEncode);
}
};
module.exports.serializeHost = serializeHost;
module.exports.cannotHaveAUsernamePasswordPort = cannotHaveAUsernamePasswordPort;
module.exports.serializeInteger = function (integer) {
return String(integer);
};
module.exports.parseURL = function (input, options) {
if (options === undefined) {
options = {};
}
// We don't handle blobs, so this just delegates:
return module.exports.basicURLParse(input, { baseURL: options.baseURL, encodingOverride: options.encodingOverride });
};