node-nlp
Version:
Library for NLU (Natural Language Understanding) done in Node.js
61 lines (41 loc) • 1.59 kB
JavaScript
/*
*/
var moment = require('moment');
var Parser = require('../parser').Parser;
var ParsedResult = require('../../result').ParsedResult;
var PATTERN = /今日|当日|昨日|明日|今夜|今夕|今晩|今朝/i;
exports.Parser = function JPCasualDateParser(){
Parser.apply(this, arguments);
this.pattern = function() { return PATTERN; }
this.extract = function(text, ref, match, opt){
var index = match.index;
var text = match[0];
var result = new ParsedResult({
index: index,
text: text,
ref: ref,
});
var refMoment = moment(ref);
var startMoment = refMoment.clone();
if(text == '今夜' || text == '今夕' || text == '今晩'){
// Normally means this coming midnight
result.start.imply('hour', 22);
result.start.imply('meridiem', 1);
} else if(text == '明日'){
// Check not "Tomorrow" on late night
if(refMoment.hour() > 4) {
startMoment.add(1, 'day');
}
} else if(text == '昨日') {
startMoment.add(-1, 'day');
} else if (text.match("今朝")) {
result.start.imply('hour', 6);
result.start.imply('meridiem', 0);
}
result.start.assign('day', startMoment.date())
result.start.assign('month', startMoment.month() + 1)
result.start.assign('year', startMoment.year())
result.tags['JPCasualDateParser'] = true;
return result;
}
}