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/*
Date format with slash "/" (also "-" and ".") between numbers
- Martes 3/11/2015
- 3/11/2015
- 3/11
*/
var moment = require('moment');
var Parser = require('../parser').Parser;
var ParsedResult = require('../../result').ParsedResult;
var PATTERN = new RegExp('(\\W|^)' +
'(?:' +
'((?:dimanche|dim|lundi|lun|mardi|mar|mercredi|mer|jeudi|jeu|vendredi|ven|samedi|sam|le))' +
'\\s*\\,?\\s*' +
')?' +
'([0-3]{0,1}[0-9]{1})[\\/\\.\\-]([0-3]{0,1}[0-9]{1})' +
'(?:' +
'[\\/\\.\\-]' +
'([0-9]{4}\s*\,?\s*|[0-9]{2}\s*\,?\s*)' +
')?' +
'(\\W|$)', 'i');
var DAYS_OFFSET = { 'dimanche': 0, 'dim': 0, 'lundi': 1, 'lun': 1,'mardi': 2, 'mar':2, 'mercredi': 3, 'mer': 3,
'jeudi': 4, 'jeu':4, 'vendredi': 5, 'ven': 5,'samedi': 6, 'sam': 6};
var OPENNING_GROUP = 1;
var ENDING_GROUP = 6;
// In French we use day/month/year
var WEEKDAY_GROUP = 2;
var DAY_GROUP = 3;
var MONTH_GROUP = 4;
var YEAR_GROUP = 5;
var YEAR_BE_GROUP = 6;
exports.Parser = function FRSlashDateFormatParser(argument) {
Parser.apply(this, arguments);
this.pattern = function () { return PATTERN; };
this.extract = function(text, ref, match, opt){
if(match[OPENNING_GROUP] == '/' || match[ENDING_GROUP] == '/') {
// Long skip, if there is some overlapping like:
// XX[/YY/ZZ]
// [XX/YY/]ZZ
match.index += match[0].length
return;
}
var index = match.index + match[OPENNING_GROUP].length;
var text = match[0].substr(match[OPENNING_GROUP].length, match[0].length - match[ENDING_GROUP].length);
var result = new ParsedResult({
text: text,
index: index,
ref: ref,
});
if(text.match(/^\d\.\d$/)) return;
if(text.match(/^\d\.\d{1,2}\.\d{1,2}$/)) return;
// MM/dd -> OK
// MM.dd -> NG
if(!match[YEAR_GROUP] && match[0].indexOf('/') < 0) return;
var date = null;
var month = match[MONTH_GROUP];
var day = match[DAY_GROUP];
day = parseInt(day);
month = parseInt(month);
var year = null;
if (match[YEAR_GROUP]) {
year = match[YEAR_GROUP];
year = parseInt(year);
if(match[YEAR_BE_GROUP]){
if (/a/i.test(match[YEAR_BE_GROUP])) {
// Ante Christe natum
year = -year;
}
} else if (year < 100){
year = year + 2000;
}
}
if(month < 1 || month > 12) {
if(month > 12) {
// dd/mm/yyyy date format if day looks like a month, and month looks like a day.
if (day >= 1 && day <= 12 && month >= 13 && month <= 31) {
// unambiguous
var tday = month;
month = day;
day = tday;
}
else {
// both month and day are <= 12
return null;
}
}
}
if(day < 1 || day > 31) return null;
if(year){
result.start.assign('day', day);
result.start.assign('month', month);
result.start.assign('year', year);
} else {
// Find the most appropriated year
var refMoment = moment(ref);
refMoment.month(month - 1);
refMoment.date(day);
refMoment.year(moment(ref).year());
var nextYear = refMoment.clone().add(1, 'y');
var lastYear = refMoment.clone().add(-1, 'y');
if( Math.abs(nextYear.diff(moment(ref))) < Math.abs(refMoment.diff(moment(ref))) ){
refMoment = nextYear;
}
else if( Math.abs(lastYear.diff(moment(ref))) < Math.abs(refMoment.diff(moment(ref))) ){
refMoment = lastYear;
}
result.start.assign('day', day);
result.start.assign('month', month);
result.start.imply('year', refMoment.year());
}
// Day of week
if(match[WEEKDAY_GROUP]) {
result.start.assign('weekday', DAYS_OFFSET[match[WEEKDAY_GROUP].toLowerCase()]);
}
result.tags['FRSlashDateFormatParser'] = true;
return result;
};
};
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