139 lines
3.9 KiB
TypeScript
139 lines
3.9 KiB
TypeScript
export class Dates {
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public static isValidYear(yearString){
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// First check for the pattern
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if(!/^\d{4}$/.test(yearString))
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return false;
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var year = parseInt(yearString, 10);
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// Check the ranges of month and year
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if(year < 1000 || year > 3000 )
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return false;
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return true;
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}
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//format YYYY-MM-DD
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public static isValidDate(dateString:string)
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{
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// First check for the pattern
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if(!/^\d{4}\-\d{1,2}\-\d{1,2}$/.test(dateString))
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return false;
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// Parse the date parts to integers
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var parts = dateString.split("-");
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var day = parseInt(parts[2], 10);
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var month = parseInt(parts[1], 10);
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var year = parseInt(parts[0], 10);
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if(!this.isValidYear(parts[0])){
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return false;
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}
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// Check the ranges of month and year
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if( month == 0 || month > 12)
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return false;
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var monthLength = [ 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 ];
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// Adjust for leap years
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if(year % 400 == 0 || (year % 100 != 0 && year % 4 == 0))
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monthLength[1] = 29;
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// Check the range of the day
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return day > 0 && day <= monthLength[month - 1];
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}
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public static getDateToday():Date{
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var myDate = new Date();
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return myDate;
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}
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public static getDateToString(myDate:Date):string{
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var date:string = myDate.getFullYear()+ "-" ;
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date+=((myDate.getMonth() + 1)<10)?"0"+(myDate.getMonth() + 1):(myDate.getMonth() + 1) ;
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date+="-";
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date+= (myDate.getDate() <10 )? "0"+myDate.getDate():myDate.getDate() ;
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return date;
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}
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public static getDateXMonthsAgo(x:number):Date{
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var myDate = new Date();
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myDate.setMonth(myDate.getMonth() - x);
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return myDate;
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}
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public static getDateXYearsAgo(x:number):Date{
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var myDate = new Date();
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myDate.setFullYear(myDate.getFullYear() - x);
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return myDate;
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}
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public static getDateFromString(date:string):Date{
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var myDate = new Date();
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myDate.setFullYear(+date.substring(0,4));
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myDate.setMonth(((date.length>5 )?(+date.substring(5,7)-1):(0)));
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myDate.setDate(((date.length>8 )?(+date.substring(8,11)):(1)));
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return myDate;
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}
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}
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export class DOI{
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public static getDOIsFromString(str:string):string[]{
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var DOIs:string[] = [];
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var words:string[] = str.split(" ");
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for(var i=0; i< words.length; i++){
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if(DOI.isValidDOI(words[i]) && DOIs.indexOf(words[i]) == -1){
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DOIs.push(words[i]);
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}
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}
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return DOIs;
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}
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public static isValidDOI(str:string):boolean{
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var exp1 = /\b(10[.][0-9]{4,}(?:[.][0-9]+)*\/(?:(?!["&\'<>])\S)+)\b/g
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var exp2 = /\b(10[.][0-9]{4,}(?:[.][0-9]+)*\/(?:(?!["&\'<>])[[:graph:]])+)\b/g
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if(str.match(exp1)!=null || str.match(exp2)!=null){
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// console.log("It's a DOI");
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return true;
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}
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return false;
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}
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}
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export class StringUtils{
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public static quote(params: string):string {
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return '"'+params+'"';
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}
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public static unquote(params: string):string {
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if(params.length > 2 && (params[0]=='"' && params[params.length-1]=='"') || (params[0]=="'" && params[params.length-1]=="'")){
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params= params.substring(1, params.length-1);
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}
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return params;
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}
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public static URIEncode(params: string):string {
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return encodeURIComponent(params);
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}
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public static URIDecode(params: string):string {
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return decodeURIComponent(params);
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}
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public static b64DecodeUnicode(str) {
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return decodeURIComponent(Array.prototype.map.call(atob(str), function(c) {
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return '%' + ('00' + c.charCodeAt(0).toString(16)).slice(-2);
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}).join(''));
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}
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private emailValidator(email : any): boolean {
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if (email.match("^[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}$"))
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return true;
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else
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return false;
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}
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public static sliceString(mystr, size: number): string {
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const sliced = String(mystr).substr(0, size);
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return sliced + (String(mystr).length > size ? '...' : '');
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}
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}
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