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Issue #1300 fix: fuzzydate strict date option regex #2354

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Issue #1300 fix: fuzzydate strict date option regex #2354

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0a169a7
fuzzydate strict date option regex
nandanv2702 Aug 13, 2021
79a49b6
suggested fixes + support for custom date format
nandanv2702 Oct 7, 2021
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47 changes: 46 additions & 1 deletion bits/20_jsutils.js
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Original file line number Diff line number Diff line change
Expand Up @@ -130,8 +130,53 @@ function fuzzynum(s/*:string*/)/*:number*/ {
if(!isNaN(v = Number(ss))) return v / wt;
return v;
}
function fuzzydate(s/*:string*/)/*:Date*/ {

// date regex reference - https://www.oreilly.com/library/view/regular-expressions-cookbook/9781449327453/ch04s04.html
// matches mm/dd/yy, mm/dd/yyyy, dd/mm/yy, dd/mm/yyyy
var STRICT_DATE_REGEX = [
"^(?:(1[0-2]|0[1-9])\\.(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])\\.(1[0-2]|0[1-9]))\\.([0-2][0-9]{3}|[0-9]{2})$",
"^(?:(1[0-2]|0[1-9])\/(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])\/(1[0-2]|0[1-9]))\/([0-2][0-9]{3}|[0-9]{2})$",
"^(?:(1[0-2]|0[1-9])-(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])-(1[0-2]|0[1-9]))-([0-2][0-9]{3}|[0-9]{2})$",
"^(?:(1[0-2]|0[1-9])\\.(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])\\.(1[0-2]|0[1-9]))\\.([0-2][0-9]{3}|[0-9]{2})$",
"^(?:(1[0-2]|0[1-9])\/(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])\/(1[0-2]|0[1-9]))\/([0-2][0-9]{3}|[0-9]{2})$",
"^(?:(1[0-2]|0[1-9])-(3[01]|[12][0-9]|0[1-9])|(3[01]|[12][0-9]|0[1-9])-(1[0-2]|0[1-9]))-([0-2][0-9]{3}|[0-9]{2})$"
];

function fuzzydate(s/*:string*/, strictDate/*string*/)/*:Date*/ {
var o = new Date(s), n = new Date(NaN);

if(strictDate) {
var dateFormat = strictDate.toLowerCase().replace(/[.]|[-]/g, '/')

STRICT_DATE_REGEX
.map(function (regex) {
var regexTestString =
var matchStr = regexTestString.test(s)

if(matchStr){
s.replace(/[.]|[-]/g, '/')

if (dateFormat === "dd/mm") {
var splitDate = s.split('/')
var newDate = [s[1], s[0], s[2]]

s = newDate.join('/')

o = new Date(s)
return o
}

o = new Date(s)
return o;
};
})
.filter(function (result) {
return ((result !== undefined) && (result !== null))
});

return n;
}

var y = o.getYear(), m = o.getMonth(), d = o.getDate();
if(isNaN(d)) return n;
if(y < 0 || y > 8099) return n;
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2 changes: 1 addition & 1 deletion bits/40_harb.js
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Original file line number Diff line number Diff line change
Expand Up @@ -883,7 +883,7 @@ var PRN = (function() {
else if(s == "TRUE") { cell.t = 'b'; cell.v = true; }
else if(s == "FALSE") { cell.t = 'b'; cell.v = false; }
else if(!isNaN(v = fuzzynum(s))) { cell.t = 'n'; if(o.cellText !== false) cell.w = s; cell.v = v; }
else if(!isNaN(fuzzydate(s).getDate()) || _re && s.match(_re)) {
else if(!isNaN(fuzzydate(s, o.strictDate).getDate()) || _re && s.match(_re)) {
cell.z = o.dateNF || SSF._table[14];
var k = 0;
if(_re && s.match(_re)){ s=dateNF_fix(s, o.dateNF, (s.match(_re)||[])); k=1; }
Expand Down