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8339644: Improve parsing of Day/Month in tzdata rules

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Reviewed-by: jlu, coffeys
This commit is contained in:
Naoto Sato 2024-09-09 16:04:59 +00:00
parent a9bb04331d
commit 86a2f9c7dc
3 changed files with 57 additions and 60 deletions
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50
make/jdk/src/classes/build/tools/tzdb/TzdbZoneRulesProvider.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2014, 2020, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2014, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -364,33 +364,35 @@ class TzdbZoneRulesProvider {
}
Month parseMonth(String mon) {
switch (mon) {
case "Jan": return Month.JANUARY;
case "Feb": return Month.FEBRUARY;
case "Mar": return Month.MARCH;
case "Apr": return Month.APRIL;
case "May": return Month.MAY;
case "Jun": return Month.JUNE;
case "Jul": return Month.JULY;
case "Aug": return Month.AUGUST;
case "Sep": return Month.SEPTEMBER;
case "Oct": return Month.OCTOBER;
case "Nov": return Month.NOVEMBER;
case "Dec": return Month.DECEMBER;
}
int len = mon.length();
if (mon.regionMatches(true, 0, "January", 0, len)) return Month.JANUARY;
if (mon.regionMatches(true, 0, "February", 0, len)) return Month.FEBRUARY;
if (mon.regionMatches(true, 0, "March", 0, len)) return Month.MARCH;
if (mon.regionMatches(true, 0, "April", 0, len)) return Month.APRIL;
if (mon.regionMatches(true, 0, "May", 0, len)) return Month.MAY;
if (mon.regionMatches(true, 0, "June", 0, len)) return Month.JUNE;
if (mon.regionMatches(true, 0, "July", 0, len)) return Month.JULY;
if (mon.regionMatches(true, 0, "August", 0, len)) return Month.AUGUST;
if (mon.regionMatches(true, 0, "September", 0, len)) return Month.SEPTEMBER;
if (mon.regionMatches(true, 0, "October", 0, len)) return Month.OCTOBER;
if (mon.regionMatches(true, 0, "November", 0, len)) return Month.NOVEMBER;
if (mon.regionMatches(true, 0, "December", 0, len)) return Month.DECEMBER;
throw new IllegalArgumentException("Unknown month: " + mon);
}
DayOfWeek parseDayOfWeek(String dow) {
switch (dow) {
case "Mon": return DayOfWeek.MONDAY;
case "Tue": return DayOfWeek.TUESDAY;
case "Wed": return DayOfWeek.WEDNESDAY;
case "Thu": return DayOfWeek.THURSDAY;
case "Fri": return DayOfWeek.FRIDAY;
case "Sat": return DayOfWeek.SATURDAY;
case "Sun": return DayOfWeek.SUNDAY;
}
int len = dow.length();
if (dow.regionMatches(true, 0, "Monday", 0, len)) return DayOfWeek.MONDAY;
if (dow.regionMatches(true, 0, "Tuesday", 0, len)) return DayOfWeek.TUESDAY;
if (dow.regionMatches(true, 0, "Wednesday", 0, len)) return DayOfWeek.WEDNESDAY;
if (dow.regionMatches(true, 0, "Thursday", 0, len)) return DayOfWeek.THURSDAY;
if (dow.regionMatches(true, 0, "Friday", 0, len)) return DayOfWeek.FRIDAY;
if (dow.regionMatches(true, 0, "Saturday", 0, len)) return DayOfWeek.SATURDAY;
if (dow.regionMatches(true, 0, "Sunday", 0, len)) return DayOfWeek.SUNDAY;
throw new IllegalArgumentException("Unknown day-of-week: " + dow);
}

37
test/jdk/sun/util/calendar/zi/Month.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -21,11 +21,6 @@
* questions.
*/
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Month enum handles month related manipulation.
*
@ -47,15 +42,6 @@ enum Month {
private final String abbr;
private static final Map<String,Month> abbreviations
= new HashMap<String,Month>(12);
static {
for (Month m : Month.values()) {
abbreviations.put(m.abbr, m);
}
}
private Month(String abbr) {
this.abbr = abbr;
}
@ -70,11 +56,22 @@ enum Month {
* @return the Month value
*/
static Month parse(String name) {
Month m = abbreviations.get(name);
if (m != null) {
return m;
}
return null;
int len = name.length();
if (name.regionMatches(true, 0, "January", 0, len)) return Month.JANUARY;
if (name.regionMatches(true, 0, "February", 0, len)) return Month.FEBRUARY;
if (name.regionMatches(true, 0, "March", 0, len)) return Month.MARCH;
if (name.regionMatches(true, 0, "April", 0, len)) return Month.APRIL;
if (name.regionMatches(true, 0, "May", 0, len)) return Month.MAY;
if (name.regionMatches(true, 0, "June", 0, len)) return Month.JUNE;
if (name.regionMatches(true, 0, "July", 0, len)) return Month.JULY;
if (name.regionMatches(true, 0, "August", 0, len)) return Month.AUGUST;
if (name.regionMatches(true, 0, "September", 0, len)) return Month.SEPTEMBER;
if (name.regionMatches(true, 0, "October", 0, len)) return Month.OCTOBER;
if (name.regionMatches(true, 0, "November", 0, len)) return Month.NOVEMBER;
if (name.regionMatches(true, 0, "December", 0, len)) return Month.DECEMBER;
throw new IllegalArgumentException("Unknown month: " + name);
}
/**

30
test/jdk/sun/util/calendar/zi/RuleDay.java
View File

@ -1,5 +1,5 @@
/*
* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2000, 2024, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -21,11 +21,6 @@
* questions.
*/
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* RuleDay class represents the value of the "ON" field. The day of
* week values start from 1 following the {@link java.util.Calendar}
@ -34,13 +29,6 @@ import java.util.Map;
* @since 1.4
*/
class RuleDay {
private static final Map<String,DayOfWeek> abbreviations = new HashMap<String,DayOfWeek>(7);
static {
for (DayOfWeek day : DayOfWeek.values()) {
abbreviations.put(day.getAbbr(), day);
}
}
private String dayName = null;
private DayOfWeek dow;
private boolean lastOne = false;
@ -166,13 +154,23 @@ class RuleDay {
return sign + toString(d);
}
private static DayOfWeek getDOW(String abbr) {
return abbreviations.get(abbr);
private static DayOfWeek getDOW(String name) {
int len = name.length();
if (name.regionMatches(true, 0, "Monday", 0, len)) return DayOfWeek.MONDAY;
if (name.regionMatches(true, 0, "Tuesday", 0, len)) return DayOfWeek.TUESDAY;
if (name.regionMatches(true, 0, "Wednesday", 0, len)) return DayOfWeek.WEDNESDAY;
if (name.regionMatches(true, 0, "Thursday", 0, len)) return DayOfWeek.THURSDAY;
if (name.regionMatches(true, 0, "Friday", 0, len)) return DayOfWeek.FRIDAY;
if (name.regionMatches(true, 0, "Saturday", 0, len)) return DayOfWeek.SATURDAY;
if (name.regionMatches(true, 0, "Sunday", 0, len)) return DayOfWeek.SUNDAY;
throw new IllegalArgumentException("Unknown day-of-week: " + name);
}
/**
* Converts the specified day of week value to the day-of-week
* name defined in {@link java.util.Calenda}.
* name defined in {@link java.util.Calendar}.
* @param dow 1-based day of week value
* @return the Calendar day of week name with "Calendar." prefix.
* @throws IllegalArgumentException if the specified dow value is out of range.