switch to JS action

This commit is contained in:
2023-10-24 12:35:54 +02:00
parent e2c94cfebc
commit 6dae9dd4e9
535 changed files with 190322 additions and 1 deletions
+196
View File
@@ -0,0 +1,196 @@
// Definitions by: Jacob Baskin <https://github.com/jacobbaskin>
// BendingBender <https://github.com/BendingBender>
// Igor Savin <https://github.com/kibertoad>
/// <reference types="node" />
import * as http from 'http';
import { Readable, Writable } from 'stream';
export { Dicer } from "../deps/dicer/lib/dicer";
export const Busboy: BusboyConstructor;
export default Busboy;
export interface BusboyConfig {
/**
* These are the HTTP headers of the incoming request, which are used by individual parsers.
*/
headers: BusboyHeaders;
/**
* `highWaterMark` to use for this Busboy instance.
* @default WritableStream default.
*/
highWaterMark?: number | undefined;
/**
* highWaterMark to use for file streams.
* @default ReadableStream default.
*/
fileHwm?: number | undefined;
/**
* Default character set to use when one isn't defined.
* @default 'utf8'
*/
defCharset?: string | undefined;
/**
* Detect if a Part is a file.
*
* By default a file is detected if contentType
* is application/octet-stream or fileName is not
* undefined.
*
* Modify this to handle e.g. Blobs.
*/
isPartAFile?: (fieldName: string | undefined, contentType: string | undefined, fileName: string | undefined) => boolean;
/**
* If paths in the multipart 'filename' field shall be preserved.
* @default false
*/
preservePath?: boolean | undefined;
/**
* Various limits on incoming data.
*/
limits?:
| {
/**
* Max field name size (in bytes)
* @default 100 bytes
*/
fieldNameSize?: number | undefined;
/**
* Max field value size (in bytes)
* @default 1MB
*/
fieldSize?: number | undefined;
/**
* Max number of non-file fields
* @default Infinity
*/
fields?: number | undefined;
/**
* For multipart forms, the max file size (in bytes)
* @default Infinity
*/
fileSize?: number | undefined;
/**
* For multipart forms, the max number of file fields
* @default Infinity
*/
files?: number | undefined;
/**
* For multipart forms, the max number of parts (fields + files)
* @default Infinity
*/
parts?: number | undefined;
/**
* For multipart forms, the max number of header key=>value pairs to parse
* @default 2000
*/
headerPairs?: number | undefined;
/**
* For multipart forms, the max size of a header part
* @default 81920
*/
headerSize?: number | undefined;
}
| undefined;
}
export type BusboyHeaders = { 'content-type': string } & http.IncomingHttpHeaders;
export interface BusboyFileStream extends
Readable {
truncated: boolean;
/**
* The number of bytes that have been read so far.
*/
bytesRead: number;
}
export interface Busboy extends Writable {
addListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
addListener(event: string | symbol, listener: (...args: any[]) => void): this;
on<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
on(event: string | symbol, listener: (...args: any[]) => void): this;
once<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
once(event: string | symbol, listener: (...args: any[]) => void): this;
removeListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
off<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
off(event: string | symbol, listener: (...args: any[]) => void): this;
prependListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
prependOnceListener<Event extends keyof BusboyEvents>(event: Event, listener: BusboyEvents[Event]): this;
prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
}
export interface BusboyEvents {
/**
* Emitted for each new file form field found.
*
* * Note: if you listen for this event, you should always handle the `stream` no matter if you care about the
* file contents or not (e.g. you can simply just do `stream.resume();` if you want to discard the contents),
* otherwise the 'finish' event will never fire on the Busboy instance. However, if you don't care about **any**
* incoming files, you can simply not listen for the 'file' event at all and any/all files will be automatically
* and safely discarded (these discarded files do still count towards `files` and `parts` limits).
* * If a configured file size limit was reached, `stream` will both have a boolean property `truncated`
* (best checked at the end of the stream) and emit a 'limit' event to notify you when this happens.
*
* @param listener.transferEncoding Contains the 'Content-Transfer-Encoding' value for the file stream.
* @param listener.mimeType Contains the 'Content-Type' value for the file stream.
*/
file: (
fieldname: string,
stream: BusboyFileStream,
filename: string,
transferEncoding: string,
mimeType: string,
) => void;
/**
* Emitted for each new non-file field found.
*/
field: (
fieldname: string,
value: string,
fieldnameTruncated: boolean,
valueTruncated: boolean,
transferEncoding: string,
mimeType: string,
) => void;
finish: () => void;
/**
* Emitted when specified `parts` limit has been reached. No more 'file' or 'field' events will be emitted.
*/
partsLimit: () => void;
/**
* Emitted when specified `files` limit has been reached. No more 'file' events will be emitted.
*/
filesLimit: () => void;
/**
* Emitted when specified `fields` limit has been reached. No more 'field' events will be emitted.
*/
fieldsLimit: () => void;
error: (error: unknown) => void;
}
export interface BusboyConstructor {
(options: BusboyConfig): Busboy;
new(options: BusboyConfig): Busboy;
}
+85
View File
@@ -0,0 +1,85 @@
'use strict'
const WritableStream = require('node:stream').Writable
const { inherits } = require('node:util')
const Dicer = require('../deps/dicer/lib/Dicer')
const MultipartParser = require('./types/multipart')
const UrlencodedParser = require('./types/urlencoded')
const parseParams = require('./utils/parseParams')
function Busboy (opts) {
if (!(this instanceof Busboy)) { return new Busboy(opts) }
if (typeof opts !== 'object') {
throw new TypeError('Busboy expected an options-Object.')
}
if (typeof opts.headers !== 'object') {
throw new TypeError('Busboy expected an options-Object with headers-attribute.')
}
if (typeof opts.headers['content-type'] !== 'string') {
throw new TypeError('Missing Content-Type-header.')
}
const {
headers,
...streamOptions
} = opts
this.opts = {
autoDestroy: false,
...streamOptions
}
WritableStream.call(this, this.opts)
this._done = false
this._parser = this.getParserByHeaders(headers)
this._finished = false
}
inherits(Busboy, WritableStream)
Busboy.prototype.emit = function (ev) {
if (ev === 'finish') {
if (!this._done) {
this._parser?.end()
return
} else if (this._finished) {
return
}
this._finished = true
}
WritableStream.prototype.emit.apply(this, arguments)
}
Busboy.prototype.getParserByHeaders = function (headers) {
const parsed = parseParams(headers['content-type'])
const cfg = {
defCharset: this.opts.defCharset,
fileHwm: this.opts.fileHwm,
headers,
highWaterMark: this.opts.highWaterMark,
isPartAFile: this.opts.isPartAFile,
limits: this.opts.limits,
parsedConType: parsed,
preservePath: this.opts.preservePath
}
if (MultipartParser.detect.test(parsed[0])) {
return new MultipartParser(this, cfg)
}
if (UrlencodedParser.detect.test(parsed[0])) {
return new UrlencodedParser(this, cfg)
}
throw new Error('Unsupported Content-Type.')
}
Busboy.prototype._write = function (chunk, encoding, cb) {
this._parser.write(chunk, cb)
}
module.exports = Busboy
module.exports.default = Busboy
module.exports.Busboy = Busboy
module.exports.Dicer = Dicer
+306
View File
@@ -0,0 +1,306 @@
'use strict'
// TODO:
// * support 1 nested multipart level
// (see second multipart example here:
// http://www.w3.org/TR/html401/interact/forms.html#didx-multipartform-data)
// * support limits.fieldNameSize
// -- this will require modifications to utils.parseParams
const { Readable } = require('node:stream')
const { inherits } = require('node:util')
const Dicer = require('../../deps/dicer/lib/Dicer')
const parseParams = require('../utils/parseParams')
const decodeText = require('../utils/decodeText')
const basename = require('../utils/basename')
const getLimit = require('../utils/getLimit')
const RE_BOUNDARY = /^boundary$/i
const RE_FIELD = /^form-data$/i
const RE_CHARSET = /^charset$/i
const RE_FILENAME = /^filename$/i
const RE_NAME = /^name$/i
Multipart.detect = /^multipart\/form-data/i
function Multipart (boy, cfg) {
let i
let len
const self = this
let boundary
const limits = cfg.limits
const isPartAFile = cfg.isPartAFile || ((fieldName, contentType, fileName) => (contentType === 'application/octet-stream' || fileName !== undefined))
const parsedConType = cfg.parsedConType || []
const defCharset = cfg.defCharset || 'utf8'
const preservePath = cfg.preservePath
const fileOpts = { highWaterMark: cfg.fileHwm }
for (i = 0, len = parsedConType.length; i < len; ++i) {
if (Array.isArray(parsedConType[i]) &&
RE_BOUNDARY.test(parsedConType[i][0])) {
boundary = parsedConType[i][1]
break
}
}
function checkFinished () {
if (nends === 0 && finished && !boy._done) {
finished = false
self.end()
}
}
if (typeof boundary !== 'string') { throw new Error('Multipart: Boundary not found') }
const fieldSizeLimit = getLimit(limits, 'fieldSize', 1 * 1024 * 1024)
const fileSizeLimit = getLimit(limits, 'fileSize', Infinity)
const filesLimit = getLimit(limits, 'files', Infinity)
const fieldsLimit = getLimit(limits, 'fields', Infinity)
const partsLimit = getLimit(limits, 'parts', Infinity)
const headerPairsLimit = getLimit(limits, 'headerPairs', 2000)
const headerSizeLimit = getLimit(limits, 'headerSize', 80 * 1024)
let nfiles = 0
let nfields = 0
let nends = 0
let curFile
let curField
let finished = false
this._needDrain = false
this._pause = false
this._cb = undefined
this._nparts = 0
this._boy = boy
const parserCfg = {
boundary,
maxHeaderPairs: headerPairsLimit,
maxHeaderSize: headerSizeLimit,
partHwm: fileOpts.highWaterMark,
highWaterMark: cfg.highWaterMark
}
this.parser = new Dicer(parserCfg)
this.parser.on('drain', function () {
self._needDrain = false
if (self._cb && !self._pause) {
const cb = self._cb
self._cb = undefined
cb()
}
}).on('part', function onPart (part) {
if (++self._nparts > partsLimit) {
self.parser.removeListener('part', onPart)
self.parser.on('part', skipPart)
boy.hitPartsLimit = true
boy.emit('partsLimit')
return skipPart(part)
}
// hack because streams2 _always_ doesn't emit 'end' until nextTick, so let
// us emit 'end' early since we know the part has ended if we are already
// seeing the next part
if (curField) {
const field = curField
field.emit('end')
field.removeAllListeners('end')
}
part.on('header', function (header) {
let contype
let fieldname
let parsed
let charset
let encoding
let filename
let nsize = 0
if (header['content-type']) {
parsed = parseParams(header['content-type'][0])
if (parsed[0]) {
contype = parsed[0].toLowerCase()
for (i = 0, len = parsed.length; i < len; ++i) {
if (RE_CHARSET.test(parsed[i][0])) {
charset = parsed[i][1].toLowerCase()
break
}
}
}
}
if (contype === undefined) { contype = 'text/plain' }
if (charset === undefined) { charset = defCharset }
if (header['content-disposition']) {
parsed = parseParams(header['content-disposition'][0])
if (!RE_FIELD.test(parsed[0])) { return skipPart(part) }
for (i = 0, len = parsed.length; i < len; ++i) {
if (RE_NAME.test(parsed[i][0])) {
fieldname = parsed[i][1]
} else if (RE_FILENAME.test(parsed[i][0])) {
filename = parsed[i][1]
if (!preservePath) { filename = basename(filename) }
}
}
} else { return skipPart(part) }
if (header['content-transfer-encoding']) { encoding = header['content-transfer-encoding'][0].toLowerCase() } else { encoding = '7bit' }
let onData,
onEnd
if (isPartAFile(fieldname, contype, filename)) {
// file/binary field
if (nfiles === filesLimit) {
if (!boy.hitFilesLimit) {
boy.hitFilesLimit = true
boy.emit('filesLimit')
}
return skipPart(part)
}
++nfiles
if (!boy._events.file) {
self.parser._ignore()
return
}
++nends
const file = new FileStream(fileOpts)
curFile = file
file.on('end', function () {
--nends
self._pause = false
checkFinished()
if (self._cb && !self._needDrain) {
const cb = self._cb
self._cb = undefined
cb()
}
})
file._read = function (n) {
if (!self._pause) { return }
self._pause = false
if (self._cb && !self._needDrain) {
const cb = self._cb
self._cb = undefined
cb()
}
}
boy.emit('file', fieldname, file, filename, encoding, contype)
onData = function (data) {
if ((nsize += data.length) > fileSizeLimit) {
const extralen = fileSizeLimit - nsize + data.length
if (extralen > 0) { file.push(data.slice(0, extralen)) }
file.truncated = true
file.bytesRead = fileSizeLimit
part.removeAllListeners('data')
file.emit('limit')
return
} else if (!file.push(data)) { self._pause = true }
file.bytesRead = nsize
}
onEnd = function () {
curFile = undefined
file.push(null)
}
} else {
// non-file field
if (nfields === fieldsLimit) {
if (!boy.hitFieldsLimit) {
boy.hitFieldsLimit = true
boy.emit('fieldsLimit')
}
return skipPart(part)
}
++nfields
++nends
let buffer = ''
let truncated = false
curField = part
onData = function (data) {
if ((nsize += data.length) > fieldSizeLimit) {
const extralen = (fieldSizeLimit - (nsize - data.length))
buffer += data.toString('binary', 0, extralen)
truncated = true
part.removeAllListeners('data')
} else { buffer += data.toString('binary') }
}
onEnd = function () {
curField = undefined
if (buffer.length) { buffer = decodeText(buffer, 'binary', charset) }
boy.emit('field', fieldname, buffer, false, truncated, encoding, contype)
--nends
checkFinished()
}
}
/* As of node@2efe4ab761666 (v0.10.29+/v0.11.14+), busboy had become
broken. Streams2/streams3 is a huge black box of confusion, but
somehow overriding the sync state seems to fix things again (and still
seems to work for previous node versions).
*/
part._readableState.sync = false
part.on('data', onData)
part.on('end', onEnd)
}).on('error', function (err) {
if (curFile) { curFile.emit('error', err) }
})
}).on('error', function (err) {
boy.emit('error', err)
}).on('finish', function () {
finished = true
checkFinished()
})
}
Multipart.prototype.write = function (chunk, cb) {
const r = this.parser.write(chunk)
if (r && !this._pause) {
cb()
} else {
this._needDrain = !r
this._cb = cb
}
}
Multipart.prototype.end = function () {
const self = this
if (self.parser.writable) {
self.parser.end()
} else if (!self._boy._done) {
process.nextTick(function () {
self._boy._done = true
self._boy.emit('finish')
})
}
}
function skipPart (part) {
part.resume()
}
function FileStream (opts) {
Readable.call(this, opts)
this.bytesRead = 0
this.truncated = false
}
inherits(FileStream, Readable)
FileStream.prototype._read = function (n) {}
module.exports = Multipart
+190
View File
@@ -0,0 +1,190 @@
'use strict'
const Decoder = require('../utils/Decoder')
const decodeText = require('../utils/decodeText')
const getLimit = require('../utils/getLimit')
const RE_CHARSET = /^charset$/i
UrlEncoded.detect = /^application\/x-www-form-urlencoded/i
function UrlEncoded (boy, cfg) {
const limits = cfg.limits
const parsedConType = cfg.parsedConType
this.boy = boy
this.fieldSizeLimit = getLimit(limits, 'fieldSize', 1 * 1024 * 1024)
this.fieldNameSizeLimit = getLimit(limits, 'fieldNameSize', 100)
this.fieldsLimit = getLimit(limits, 'fields', Infinity)
let charset
for (var i = 0, len = parsedConType.length; i < len; ++i) { // eslint-disable-line no-var
if (Array.isArray(parsedConType[i]) &&
RE_CHARSET.test(parsedConType[i][0])) {
charset = parsedConType[i][1].toLowerCase()
break
}
}
if (charset === undefined) { charset = cfg.defCharset || 'utf8' }
this.decoder = new Decoder()
this.charset = charset
this._fields = 0
this._state = 'key'
this._checkingBytes = true
this._bytesKey = 0
this._bytesVal = 0
this._key = ''
this._val = ''
this._keyTrunc = false
this._valTrunc = false
this._hitLimit = false
}
UrlEncoded.prototype.write = function (data, cb) {
if (this._fields === this.fieldsLimit) {
if (!this.boy.hitFieldsLimit) {
this.boy.hitFieldsLimit = true
this.boy.emit('fieldsLimit')
}
return cb()
}
let idxeq; let idxamp; let i; let p = 0; const len = data.length
while (p < len) {
if (this._state === 'key') {
idxeq = idxamp = undefined
for (i = p; i < len; ++i) {
if (!this._checkingBytes) { ++p }
if (data[i] === 0x3D/* = */) {
idxeq = i
break
} else if (data[i] === 0x26/* & */) {
idxamp = i
break
}
if (this._checkingBytes && this._bytesKey === this.fieldNameSizeLimit) {
this._hitLimit = true
break
} else if (this._checkingBytes) { ++this._bytesKey }
}
if (idxeq !== undefined) {
// key with assignment
if (idxeq > p) { this._key += this.decoder.write(data.toString('binary', p, idxeq)) }
this._state = 'val'
this._hitLimit = false
this._checkingBytes = true
this._val = ''
this._bytesVal = 0
this._valTrunc = false
this.decoder.reset()
p = idxeq + 1
} else if (idxamp !== undefined) {
// key with no assignment
++this._fields
let key; const keyTrunc = this._keyTrunc
if (idxamp > p) { key = (this._key += this.decoder.write(data.toString('binary', p, idxamp))) } else { key = this._key }
this._hitLimit = false
this._checkingBytes = true
this._key = ''
this._bytesKey = 0
this._keyTrunc = false
this.decoder.reset()
if (key.length) {
this.boy.emit('field', decodeText(key, 'binary', this.charset),
'',
keyTrunc,
false)
}
p = idxamp + 1
if (this._fields === this.fieldsLimit) { return cb() }
} else if (this._hitLimit) {
// we may not have hit the actual limit if there are encoded bytes...
if (i > p) { this._key += this.decoder.write(data.toString('binary', p, i)) }
p = i
if ((this._bytesKey = this._key.length) === this.fieldNameSizeLimit) {
// yep, we actually did hit the limit
this._checkingBytes = false
this._keyTrunc = true
}
} else {
if (p < len) { this._key += this.decoder.write(data.toString('binary', p)) }
p = len
}
} else {
idxamp = undefined
for (i = p; i < len; ++i) {
if (!this._checkingBytes) { ++p }
if (data[i] === 0x26/* & */) {
idxamp = i
break
}
if (this._checkingBytes && this._bytesVal === this.fieldSizeLimit) {
this._hitLimit = true
break
} else if (this._checkingBytes) { ++this._bytesVal }
}
if (idxamp !== undefined) {
++this._fields
if (idxamp > p) { this._val += this.decoder.write(data.toString('binary', p, idxamp)) }
this.boy.emit('field', decodeText(this._key, 'binary', this.charset),
decodeText(this._val, 'binary', this.charset),
this._keyTrunc,
this._valTrunc)
this._state = 'key'
this._hitLimit = false
this._checkingBytes = true
this._key = ''
this._bytesKey = 0
this._keyTrunc = false
this.decoder.reset()
p = idxamp + 1
if (this._fields === this.fieldsLimit) { return cb() }
} else if (this._hitLimit) {
// we may not have hit the actual limit if there are encoded bytes...
if (i > p) { this._val += this.decoder.write(data.toString('binary', p, i)) }
p = i
if ((this._val === '' && this.fieldSizeLimit === 0) ||
(this._bytesVal = this._val.length) === this.fieldSizeLimit) {
// yep, we actually did hit the limit
this._checkingBytes = false
this._valTrunc = true
}
} else {
if (p < len) { this._val += this.decoder.write(data.toString('binary', p)) }
p = len
}
}
}
cb()
}
UrlEncoded.prototype.end = function () {
if (this.boy._done) { return }
if (this._state === 'key' && this._key.length > 0) {
this.boy.emit('field', decodeText(this._key, 'binary', this.charset),
'',
this._keyTrunc,
false)
} else if (this._state === 'val') {
this.boy.emit('field', decodeText(this._key, 'binary', this.charset),
decodeText(this._val, 'binary', this.charset),
this._keyTrunc,
this._valTrunc)
}
this.boy._done = true
this.boy.emit('finish')
}
module.exports = UrlEncoded
+54
View File
@@ -0,0 +1,54 @@
'use strict'
const RE_PLUS = /\+/g
const HEX = [
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
]
function Decoder () {
this.buffer = undefined
}
Decoder.prototype.write = function (str) {
// Replace '+' with ' ' before decoding
str = str.replace(RE_PLUS, ' ')
let res = ''
let i = 0; let p = 0; const len = str.length
for (; i < len; ++i) {
if (this.buffer !== undefined) {
if (!HEX[str.charCodeAt(i)]) {
res += '%' + this.buffer
this.buffer = undefined
--i // retry character
} else {
this.buffer += str[i]
++p
if (this.buffer.length === 2) {
res += String.fromCharCode(parseInt(this.buffer, 16))
this.buffer = undefined
}
}
} else if (str[i] === '%') {
if (i > p) {
res += str.substring(p, i)
p = i
}
this.buffer = ''
++p
}
}
if (p < len && this.buffer === undefined) { res += str.substring(p) }
return res
}
Decoder.prototype.reset = function () {
this.buffer = undefined
}
module.exports = Decoder
+14
View File
@@ -0,0 +1,14 @@
'use strict'
module.exports = function basename (path) {
if (typeof path !== 'string') { return '' }
for (var i = path.length - 1; i >= 0; --i) { // eslint-disable-line no-var
switch (path.charCodeAt(i)) {
case 0x2F: // '/'
case 0x5C: // '\'
path = path.slice(i + 1)
return (path === '..' || path === '.' ? '' : path)
}
}
return (path === '..' || path === '.' ? '' : path)
}
+26
View File
@@ -0,0 +1,26 @@
'use strict'
// Node has always utf-8
const utf8Decoder = new TextDecoder('utf-8')
const textDecoders = new Map([
['utf-8', utf8Decoder],
['utf8', utf8Decoder]
])
function decodeText (text, textEncoding, destEncoding) {
if (text) {
if (textDecoders.has(destEncoding)) {
try {
return textDecoders.get(destEncoding).decode(Buffer.from(text, textEncoding))
} catch (e) { }
} else {
try {
textDecoders.set(destEncoding, new TextDecoder(destEncoding))
return textDecoders.get(destEncoding).decode(Buffer.from(text, textEncoding))
} catch (e) { }
}
}
return text
}
module.exports = decodeText
+16
View File
@@ -0,0 +1,16 @@
'use strict'
module.exports = function getLimit (limits, name, defaultLimit) {
if (
!limits ||
limits[name] === undefined ||
limits[name] === null
) { return defaultLimit }
if (
typeof limits[name] !== 'number' ||
isNaN(limits[name])
) { throw new TypeError('Limit ' + name + ' is not a valid number') }
return limits[name]
}
+87
View File
@@ -0,0 +1,87 @@
'use strict'
const decodeText = require('./decodeText')
const RE_ENCODED = /%([a-fA-F0-9]{2})/g
function encodedReplacer (match, byte) {
return String.fromCharCode(parseInt(byte, 16))
}
function parseParams (str) {
const res = []
let state = 'key'
let charset = ''
let inquote = false
let escaping = false
let p = 0
let tmp = ''
for (var i = 0, len = str.length; i < len; ++i) { // eslint-disable-line no-var
const char = str[i]
if (char === '\\' && inquote) {
if (escaping) { escaping = false } else {
escaping = true
continue
}
} else if (char === '"') {
if (!escaping) {
if (inquote) {
inquote = false
state = 'key'
} else { inquote = true }
continue
} else { escaping = false }
} else {
if (escaping && inquote) { tmp += '\\' }
escaping = false
if ((state === 'charset' || state === 'lang') && char === "'") {
if (state === 'charset') {
state = 'lang'
charset = tmp.substring(1)
} else { state = 'value' }
tmp = ''
continue
} else if (state === 'key' &&
(char === '*' || char === '=') &&
res.length) {
if (char === '*') { state = 'charset' } else { state = 'value' }
res[p] = [tmp, undefined]
tmp = ''
continue
} else if (!inquote && char === ';') {
state = 'key'
if (charset) {
if (tmp.length) {
tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
'binary',
charset)
}
charset = ''
} else if (tmp.length) {
tmp = decodeText(tmp, 'binary', 'utf8')
}
if (res[p] === undefined) { res[p] = tmp } else { res[p][1] = tmp }
tmp = ''
++p
continue
} else if (!inquote && (char === ' ' || char === '\t')) { continue }
}
tmp += char
}
if (charset && tmp.length) {
tmp = decodeText(tmp.replace(RE_ENCODED, encodedReplacer),
'binary',
charset)
} else if (tmp) {
tmp = decodeText(tmp, 'binary', 'utf8')
}
if (res[p] === undefined) {
if (tmp) { res[p] = tmp }
} else { res[p][1] = tmp }
return res
}
module.exports = parseParams