95 lines
2.2 KiB
TypeScript
95 lines
2.2 KiB
TypeScript
import { DateExpressionLexer } from "../text/lexer/DateExpressionLexer";
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import { LexerQuery } from "../text/lexer/LexerQuery";
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export class DateHelper
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{
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static now()
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{
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let date = new Date();
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return date;
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}
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static nowMS()
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{
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return this.now().getTime();
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}
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static today()
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{
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let date = new Date();
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date.setHours( 0, 0, 0 );
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return date;
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}
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static createYMD( year:number, month:number = 1, day:number = 1, hours:number = 0, minutes:number = 0, seconds:number = 0 )
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{
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let date = new Date();
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date.setFullYear( year );
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date.setMonth( month - 1 );
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date.setDate( day );
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date.setHours( hours, minutes, seconds );
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return date;
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}
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static parseDateExpression( expression:string ):Date
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{
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let query = LexerQuery.from( expression, new DateExpressionLexer() );
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let now = query.find( le => le.isMatcher( DateExpressionLexer.Now ) );
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if ( now )
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{
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return DateHelper.now();
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}
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let time = query.find( le => le.isMatcher( DateExpressionLexer.Time ) );
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let hourMinutesSeconds = ( time?.match || "9:00" ).split( ":" ).map( s => parseInt( s ) );
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let hours = hourMinutesSeconds[ 0 ];
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let minutes = hourMinutesSeconds[ 1 ];
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let seconds = hourMinutesSeconds.length == 3 ? hourMinutesSeconds[ 2 ] : 0;
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let year = DateHelper.now().getFullYear();
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let month = DateHelper.now().getMonth();
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let day = DateHelper.now().getDate();
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let date = query.find( le => /date/i.test( le.type ) );
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if ( date )
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{
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let seperator = /slash/i.test( date.type ) ? "/" : /dot/i.test( date.type ) ? "." : "-";
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let values = date.match.replace( /(\/|\.|\-)$/, "" ).split( seperator ).map( s => parseInt( s ) );
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if ( /reverse/i.test( date.type ) )
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{
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year = values[ 0 ];
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month = values[ 1 ] - 1;
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day = values[ 2 ];
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}
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else
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{
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day = values[ 0 ];
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month = values[ 1 ] - 1;
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if ( values.length == 3 )
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{
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year = values[ 2 ];
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if ( year < 100 )
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{
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year += 2000;
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}
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}
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}
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}
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return DateHelper.createYMD( year, month, day, hours, minutes, seconds );
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}
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} |