chrono-node
Version:
A natural language date parser in Javascript
177 lines • 4.75 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseTimeUnits = exports.TIME_UNITS_PATTERN = exports.parseYear = exports.YEAR_PATTERN = exports.parseNumberPattern = exports.NUMBER_PATTERN = exports.TIME_UNIT_DICTIONARY = exports.INTEGER_WORD_DICTIONARY = exports.MONTH_DICTIONARY = exports.WEEKDAY_DICTIONARY = void 0;
const pattern_1 = require("../../utils/pattern");
const years_1 = require("../../calculation/years");
exports.WEEKDAY_DICTIONARY = {
"sonntag": 0,
"so": 0,
"montag": 1,
"mo": 1,
"dienstag": 2,
"di": 2,
"mittwoch": 3,
"mi": 3,
"donnerstag": 4,
"do": 4,
"freitag": 5,
"fr": 5,
"samstag": 6,
"sa": 6,
};
exports.MONTH_DICTIONARY = {
"januar": 1,
"jänner": 1,
"janner": 1,
"jan": 1,
"jan.": 1,
"februar": 2,
"feber": 2,
"feb": 2,
"feb.": 2,
"märz": 3,
"maerz": 3,
"mär": 3,
"mär.": 3,
"mrz": 3,
"mrz.": 3,
"april": 4,
"apr": 4,
"apr.": 4,
"mai": 5,
"juni": 6,
"jun": 6,
"jun.": 6,
"juli": 7,
"jul": 7,
"jul.": 7,
"august": 8,
"aug": 8,
"aug.": 8,
"september": 9,
"sep": 9,
"sep.": 9,
"sept": 9,
"sept.": 9,
"oktober": 10,
"okt": 10,
"okt.": 10,
"november": 11,
"nov": 11,
"nov.": 11,
"dezember": 12,
"dez": 12,
"dez.": 12,
};
exports.INTEGER_WORD_DICTIONARY = {
"eins": 1,
"eine": 1,
"einem": 1,
"einen": 1,
"einer": 1,
"zwei": 2,
"drei": 3,
"vier": 4,
"fünf": 5,
"fuenf": 5,
"sechs": 6,
"sieben": 7,
"acht": 8,
"neun": 9,
"zehn": 10,
"elf": 11,
"zwölf": 12,
"zwoelf": 12,
};
exports.TIME_UNIT_DICTIONARY = {
sek: "second",
sekunde: "second",
sekunden: "second",
min: "minute",
minute: "minute",
minuten: "minute",
h: "hour",
std: "hour",
stunde: "hour",
stunden: "hour",
tag: "d",
tage: "d",
tagen: "d",
woche: "week",
wochen: "week",
monat: "month",
monate: "month",
monaten: "month",
monats: "month",
quartal: "quarter",
quartals: "quarter",
quartale: "quarter",
quartalen: "quarter",
a: "year",
j: "year",
jr: "year",
jahr: "year",
jahre: "year",
jahren: "year",
jahres: "year",
};
exports.NUMBER_PATTERN = `(?:${pattern_1.matchAnyPattern(exports.INTEGER_WORD_DICTIONARY)}|[0-9]+|[0-9]+\\.[0-9]+|halb?|halbe?|einigen?|wenigen?|mehreren?)`;
function parseNumberPattern(match) {
const num = match.toLowerCase();
if (exports.INTEGER_WORD_DICTIONARY[num] !== undefined) {
return exports.INTEGER_WORD_DICTIONARY[num];
}
else if (num === "ein" || num === "einer" || num === "einem" || num === "einen" || num === "eine") {
return 1;
}
else if (num.match(/wenigen/)) {
return 2;
}
else if (num.match(/halb/) || num.match(/halben/)) {
return 0.5;
}
else if (num.match(/einigen/)) {
return 3;
}
else if (num.match(/mehreren/)) {
return 7;
}
return parseFloat(num);
}
exports.parseNumberPattern = parseNumberPattern;
exports.YEAR_PATTERN = `(?:[0-9]{1,4}(?:\\s*[vn]\\.?\\s*(?:C(?:hr)?|(?:u\\.?|d\\.?(?:\\s*g\\.?)?)?\\s*Z)\\.?|\\s*(?:u\\.?|d\\.?(?:\\s*g\\.)?)\\s*Z\\.?)?)`;
function parseYear(match) {
if (/v/i.test(match)) {
return -parseInt(match.replace(/[^0-9]+/gi, ""));
}
if (/n/i.test(match)) {
return parseInt(match.replace(/[^0-9]+/gi, ""));
}
if (/z/i.test(match)) {
return parseInt(match.replace(/[^0-9]+/gi, ""));
}
const rawYearNumber = parseInt(match);
return years_1.findMostLikelyADYear(rawYearNumber);
}
exports.parseYear = parseYear;
const SINGLE_TIME_UNIT_PATTERN = `(${exports.NUMBER_PATTERN})\\s{0,5}(${pattern_1.matchAnyPattern(exports.TIME_UNIT_DICTIONARY)})\\s{0,5}`;
const SINGLE_TIME_UNIT_REGEX = new RegExp(SINGLE_TIME_UNIT_PATTERN, "i");
exports.TIME_UNITS_PATTERN = pattern_1.repeatedTimeunitPattern("", 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);
match = SINGLE_TIME_UNIT_REGEX.exec(remainingText);
}
return fragments;
}
exports.parseTimeUnits = parseTimeUnits;
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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