chrono-node
Version:
A natural language date parser in Javascript
165 lines • 5.74 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TIME_UNITS_PATTERN = exports.YEAR_PATTERN = exports.ORDINAL_NUMBER_PATTERN = exports.NUMBER_PATTERN = exports.TIME_UNIT_DICTIONARY = exports.ORDINAL_WORD_DICTIONARY = exports.INTEGER_WORD_DICTIONARY = exports.MONTH_DICTIONARY = exports.FULL_MONTH_NAME_DICTIONARY = exports.WEEKDAY_DICTIONARY = void 0;
exports.parseNumberPattern = parseNumberPattern;
exports.parseOrdinalNumberPattern = parseOrdinalNumberPattern;
exports.parseYear = parseYear;
exports.parseTimeUnits = parseTimeUnits;
const pattern_1 = require("../../utils/pattern");
const years_1 = require("../../calculation/years");
exports.WEEKDAY_DICTIONARY = {
"domenica": 0,
"dom": 0,
"lunedì": 1,
"lun": 1,
"martedì": 2,
"mar": 2,
"mercoledì": 3,
"merc": 3,
"giovedì": 4,
"giov": 4,
"venerdì": 5,
"ven": 5,
"sabato": 6,
"sab": 6,
};
exports.FULL_MONTH_NAME_DICTIONARY = {};
exports.MONTH_DICTIONARY = Object.assign(Object.assign({}, exports.FULL_MONTH_NAME_DICTIONARY), { "gennaio": 1, "gen": 1, "gen.": 1, "febbraio": 2, "feb": 2, "feb.": 2, "febraio": 2, "febb": 2, "febb.": 2, "marzo": 3, "mar": 3, "mar.": 3, "aprile": 4, "apr": 4, "apr.": 4, "maggio": 5, "mag": 5, "giugno": 6, "giu": 6, "luglio": 7, "lug": 7, "lugl": 7, "lug.": 7, "agosto": 8, "ago": 8, "settembre": 9, "set": 9, "set.": 9, "sett": 9, "sett.": 9, "ottobre": 10, "ott": 10, "ott.": 10, "novembre": 11, "nov": 11, "nov.": 11, "dicembre": 12, "dic": 12, "dice": 12, "dic.": 12 });
exports.INTEGER_WORD_DICTIONARY = {
"uno": 1,
"due": 2,
"tre": 3,
"quattro": 4,
"cinque": 5,
"sei": 6,
"sette": 7,
"otto": 8,
"nove": 9,
"dieci": 10,
"undici": 11,
"dodici": 12,
};
exports.ORDINAL_WORD_DICTIONARY = {
"primo": 1,
"secondo": 2,
"terzo": 3,
"quarto": 4,
"quinto": 5,
"sesto": 6,
"settimo": 7,
"ottavo": 8,
"nono": 9,
"decimo": 10,
"undicesimo": 11,
"dodicesimo": 12,
"tredicesimo": 13,
"quattordicesimo": 14,
"quindicesimo": 15,
"sedicesimo": 16,
"diciassettesimo": 17,
"diciottesimo": 18,
"diciannovesimo": 19,
"ventesimo": 20,
"ventunesimo": 21,
"ventiduesimo": 22,
"ventitreesimo": 23,
"ventiquattresimo": 24,
"venticinquesimo": 25,
"ventiseiesimo": 26,
"ventisettesimo": 27,
"ventottesimo": 28,
"ventinovesimo": 29,
"trentesimo": 30,
"trentunesimo": 31,
};
exports.TIME_UNIT_DICTIONARY = {
"sec": "second",
"secondo": "second",
"secondi": "second",
"min": "minute",
"mins": "minute",
"minuti": "minute",
"h": "hour",
"hr": "hour",
"o": "hour",
"ora": "hour",
"ore": "hour",
"giorno": "d",
"giorni": "d",
"settimana": "week",
"settimane": "week",
"mese": "month",
"trimestre": "quarter",
"trimestri": "quarter",
"anni": "year",
"anno": "year",
};
exports.NUMBER_PATTERN = `(?:${(0, pattern_1.matchAnyPattern)(exports.INTEGER_WORD_DICTIONARY)}|[0-9]+|[0-9]+\\.[0-9]+|half(?:\\s{0,2}un?)?|un?\\b(?:\\s{0,2}qualcuno)?|qualcuno|molti|a?\\s{0,2}alcuni\\s{0,2}(?:of)?)`;
function parseNumberPattern(match) {
const num = match.toLowerCase();
if (exports.INTEGER_WORD_DICTIONARY[num] !== undefined) {
return exports.INTEGER_WORD_DICTIONARY[num];
}
else if (num === "un" || num === "una") {
return 1;
}
else if (num.match(/alcuni/)) {
return 3;
}
else if (num.match(/metá/)) {
return 0.5;
}
else if (num.match(/paio/)) {
return 2;
}
else if (num.match(/molti/)) {
return 7;
}
return parseFloat(num);
}
exports.ORDINAL_NUMBER_PATTERN = `(?:${(0, pattern_1.matchAnyPattern)(exports.ORDINAL_WORD_DICTIONARY)}|[0-9]{1,2}(?:mo|ndo|rzo|simo|esimo)?)`;
function parseOrdinalNumberPattern(match) {
let num = match.toLowerCase();
if (exports.ORDINAL_WORD_DICTIONARY[num] !== undefined) {
return exports.ORDINAL_WORD_DICTIONARY[num];
}
num = num.replace(/(?:imo|ndo|rzo|rto|nto|sto|tavo|nono|cimo|timo|esimo)$/i, "");
return parseInt(num);
}
exports.YEAR_PATTERN = `(?:[1-9][0-9]{0,3}\\s{0,2}(?:BE|AD|BC|BCE|CE)|[1-2][0-9]{3}|[5-9][0-9])`;
function parseYear(match) {
if (/BE/i.test(match)) {
match = match.replace(/BE/i, "");
return parseInt(match) - 543;
}
if (/BCE?/i.test(match)) {
match = match.replace(/BCE?/i, "");
return -parseInt(match);
}
if (/(AD|CE)/i.test(match)) {
match = match.replace(/(AD|CE)/i, "");
return parseInt(match);
}
const rawYearNumber = parseInt(match);
return (0, years_1.findMostLikelyADYear)(rawYearNumber);
}
const SINGLE_TIME_UNIT_PATTERN = `(${exports.NUMBER_PATTERN})\\s{0,3}(${(0, pattern_1.matchAnyPattern)(exports.TIME_UNIT_DICTIONARY)})`;
const SINGLE_TIME_UNIT_REGEX = new RegExp(SINGLE_TIME_UNIT_PATTERN, "i");
exports.TIME_UNITS_PATTERN = (0, pattern_1.repeatedTimeunitPattern)(`(?:(?:about|around)\\s{0,3})?`, SINGLE_TIME_UNIT_PATTERN);
function parseTimeUnits(timeunitText) {
const fragments = {};
let remainingText = timeunitText;
let match = SINGLE_TIME_UNIT_REGEX.exec(remainingText);
while (match) {
collectDateTimeFragment(fragments, match);
remainingText = remainingText.substring(match[0].length).trim();
match = SINGLE_TIME_UNIT_REGEX.exec(remainingText);
}
return fragments;
}
function collectDateTimeFragment(fragments, match) {
const num = parseNumberPattern(match[1]);
const unit = exports.TIME_UNIT_DICTIONARY[match[2].toLowerCase()];
fragments[unit] = num;
}
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