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PlantUML is a component that allows to quickly write diagrams from text.
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package net.sourceforge.plantuml.project.lang;
import net.sourceforge.plantuml.project.time.Day;
import net.sourceforge.plantuml.project.time.Month;
import net.sourceforge.plantuml.regex.IRegex;
import net.sourceforge.plantuml.regex.RegexConcat;
import net.sourceforge.plantuml.regex.RegexLeaf;
import net.sourceforge.plantuml.regex.RegexOr;
import net.sourceforge.plantuml.regex.RegexResult;
public class DayPattern {
private final String id;
private final String yearKeyA;
private final String yearKeyB;
private final String yearKeyC;
private final String monthKeyA;
private final String monthKeyB;
private final String monthKeyC;
private final String dayKeyA;
private final String dayKeyB;
private final String dayKeyC;
public DayPattern(String id) {
this.id = id;
this.yearKeyA = "AYEAR" + id;
this.yearKeyB = "BYEAR" + id;
this.yearKeyC = "CYEAR" + id;
this.monthKeyA = "AMONTH" + id;
this.monthKeyB = "BMONTH" + id;
this.monthKeyC = "CMONTH" + id;
this.dayKeyA = "ADAY" + id;
this.dayKeyB = "BDAY" + id;
this.dayKeyC = "CDAY" + id;
}
public IRegex toRegex() {
return new RegexOr(toRegexA_DD_MONTH_YYYY(), toRegexB_YYYY_MM_DD(), toRegexC_MONTH_DD_YYYY());
}
public Day getDay(RegexResult arg) {
if (arg.get(dayKeyA, 0) != null)
return resultA(arg);
if (arg.get(dayKeyB, 0) != null)
return resultB(arg);
if (arg.get(dayKeyC, 0) != null)
return resultC(arg);
return null;
}
private IRegex toRegexA_DD_MONTH_YYYY() {
return new RegexConcat( //
new RegexLeaf(dayKeyA, "([\\d]{1,2})"), //
new RegexLeaf("[\\w, ]*?"), //
new RegexLeaf(monthKeyA, "(" + Month.getRegexString() + ")"), //
new RegexLeaf("[\\w, ]*?"), //
new RegexLeaf(yearKeyA, "([\\d]{1,4})"));
}
private Day resultA(RegexResult arg) {
final int day = Integer.parseInt(arg.get(dayKeyA, 0));
final String month = arg.get(monthKeyA, 0);
final int year = Integer.parseInt(arg.get(yearKeyA, 0));
return Day.create(year, month, day);
}
private IRegex toRegexB_YYYY_MM_DD() {
return new RegexConcat( //
new RegexLeaf(yearKeyB, "([\\d]{1,4})"), //
new RegexLeaf("\\D"), //
new RegexLeaf(monthKeyB, "([\\d]{1,2})"), //
new RegexLeaf("\\D"), //
new RegexLeaf(dayKeyB, "([\\d]{1,2})"));
}
private Day resultB(RegexResult arg) {
final int day = Integer.parseInt(arg.get(dayKeyB, 0));
final int month = Integer.parseInt(arg.get(monthKeyB, 0));
final int year = Integer.parseInt(arg.get(yearKeyB, 0));
return Day.create(year, month, day);
}
private IRegex toRegexC_MONTH_DD_YYYY() {
return new RegexConcat( //
new RegexLeaf(monthKeyC, "(" + Month.getRegexString() + ")"), //
new RegexLeaf("[\\w, ]*?"), //
new RegexLeaf(dayKeyC, "([\\d]{1,2})"), //
new RegexLeaf("[\\w, ]*?"), //
new RegexLeaf(yearKeyC, "([\\d]{1,4})"));
}
private Day resultC(RegexResult arg) {
final int day = Integer.parseInt(arg.get(dayKeyC, 0));
final String month = arg.get(monthKeyC, 0);
final int year = Integer.parseInt(arg.get(yearKeyC, 0));
return Day.create(year, month, day);
}
}