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Tims-Chat/files_wcf/js/Bastelstu.be/Chat/Parser.js
2021-03-05 17:19:27 +01:00

150 lines
3.5 KiB
JavaScript

/*
* Copyright (c) 2010-2021 Tim Düsterhus.
*
* Use of this software is governed by the Business Source License
* included in the LICENSE file.
*
* Change Date: 2025-03-05
*
* On the date above, in accordance with the Business Source
* License, use of this software will be governed by version 2
* or later of the General Public License.
*/
define(['Bastelstu.be/parser-combinator'], function (parsec) {
'use strict'
const { C, F, N, X, parser, Streams } = parsec
const response = parsec.parsec.response
const peek = function (p) {
return new parser((input, index = 0) =>
p.parse(input, index).fold(
(accept) => response.accept(accept.value, accept.input, index, false),
(reject) => response.reject(input.location(reject.offset), false)
)
)
}
const Whitespace = F.satisfy((item) => /\s/.test(item))
const Rest = F.any.optrep().map((item) => item.join(''))
const Rest1 = F.any.rep().map((item) => item.join(''))
const AlnumTrigger = C.letter
.or(N.digit)
.rep()
.map((item) => item.join(''))
const SymbolicTrigger = F.not(C.letter.or(N.digit).or(Whitespace))
.rep()
.map((item) => item.join(''))
const Slash = C.char('/')
const Trigger = Slash.thenRight(
peek(Slash.map((item) => null))
.or(AlnumTrigger.thenLeft(Whitespace.rep().or(F.eos)))
.or(SymbolicTrigger.thenLeft(Whitespace.optrep()))
).or(F.returns(null))
const Command = Trigger.then(Rest)
const Quote = C.char('"')
const QuotedUsername = Quote.thenRight(
Quote.thenRight(Quote).or(F.not(Quote)).rep()
)
.thenLeft(Quote)
.map((item) => item.join(''))
const Comma = C.char(',')
const UnquotedUsername = F.not(Comma.or(Quote).or(Whitespace))
.then(
F.not(Comma.or(Whitespace))
.optrep()
.map((item) => item.join(''))
)
.map((item) => item.join(''))
const Username = QuotedUsername.or(UnquotedUsername)
const Decimal = (length) =>
N.digit.occurrence(length).map((item) => parseInt(item.join(''), 10))
const Hexadecimal = N.digit
.or(C.charIn('abcdefABCDEF'))
.rep()
.map((x) => x.join(''))
const RGBHex = C.char('#')
.opt()
.thenRight(
Hexadecimal.filter((x) => x.length === 3 || x.length === 6).map(
(item) => {
if (item.length === 3) {
item = `${item[0]}${item[0]}${item[1]}${item[1]}${item[2]}${item[2]}`
}
return item
}
)
)
.map((item) => `#${item}`)
const Dash = C.char('-')
const Datestring = Decimal(4)
.filter((item) => 2000 <= item && item <= 2030)
.thenLeft(Dash)
.then(Decimal(2).filter((item) => 1 <= item && item <= 12))
.thenLeft(Dash)
.then(Decimal(2).filter((item) => 1 <= item))
const Colon = C.char(':')
const Timestring = Decimal(2)
.filter((item) => 0 <= item && item <= 23)
.thenLeft(Colon)
.then(Decimal(2).filter((item) => 0 <= item && item <= 59))
.thenLeft(Colon)
.then(Decimal(2).filter((item) => 0 <= item && item <= 59))
const ISODate = Datestring.then(C.char('T').thenRight(Timestring).opt()).map(
function ([year, month, day, time]) {
const date = new Date()
date.setFullYear(year)
date.setMonth(month - 1)
date.setDate(day)
time.map(function ([hour, minute, second]) {
date.setHours(hour)
date.setMinutes(minute)
date.setSeconds(second)
})
return date
}
)
return {
Streams,
stream: Streams,
AlnumTrigger,
Colon,
Command,
Dash,
Datestring,
Decimal,
Hexadecimal,
ISODate,
Quote,
QuotedUsername,
RGBHex,
Rest,
Rest1,
Slash,
SymbolicTrigger,
Timestring,
Trigger,
UnquotedUsername,
Username,
Whitespace,
C,
F,
N,
X,
}
})