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LANG-1107 Fix parsing edge cases in FastDateParser 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1671992 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Chas Honton 2015-04-08 02:19:02 +00:00
parent c9d3c58e44
commit 86c76dd5ea
4 changed files with 42 additions and 36 deletions
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2
src/changes/changes.xml
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@ -22,7 +22,7 @@
<body>
<release version="3.5" date="tba" description="tba">
<action issue="LANG-1107" type="update" dev="chas">Fix parsing edge cases in FastDateParser</action>
</release>
<release version="3.4" date="2014-04-06" description="Feature and bugfix release">

30
src/main/java/org/apache/commons/lang3/time/FastDateParser.java
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@ -744,9 +744,13 @@ public class FastDateParser implements DateParser, Serializable {
/**
* A strategy that handles a timezone field in the parsing pattern
*/
private static class TimeZoneStrategy extends Strategy {
private final String validTimeZoneChars;
static class TimeZoneStrategy extends Strategy {
private static final String RFC_822_TIME_ZONE = "[+-]\\d{4}";
private static final String GMT_OPTION= "GMT[+-]\\d{1,2}:\\d{2}";
// see http://www.iana.org/time-zones and http://cldr.unicode.org/translation/timezones
static final String TZ_DATABASE= "(?:\\p{L}[\\p{L}\\p{Mc}\\p{Nd}\\p{Zs}\\p{P}&&[^-]]*-?\\p{Zs}?)*";
private static final String VALID_TZ = "((?iu)"+RFC_822_TIME_ZONE+"|"+GMT_OPTION+"|"+TZ_DATABASE+")";
private final SortedMap<String, TimeZone> tzNames= new TreeMap<String, TimeZone>(String.CASE_INSENSITIVE_ORDER);
/**
@ -777,9 +781,6 @@ public class FastDateParser implements DateParser, Serializable {
TimeZoneStrategy(final Locale locale) {
final String[][] zones = DateFormatSymbols.getInstance(locale).getZoneStrings();
for (final String[] zone : zones) {
if (zone[ID].startsWith("GMT")) {
continue;
}
final TimeZone tz = TimeZone.getTimeZone(zone[ID]);
if (!tzNames.containsKey(zone[LONG_STD])){
tzNames.put(zone[LONG_STD], tz);
@ -795,16 +796,7 @@ public class FastDateParser implements DateParser, Serializable {
tzNames.put(zone[SHORT_DST], tz);
}
}
}
final StringBuilder sb= new StringBuilder();
sb.append("(GMT[+-]\\d{1,2}:\\d{2}").append('|');
sb.append("[+-]\\d{4}").append('|');
for(final String id : tzNames.keySet()) {
escapeRegex(sb, id, false).append('|');
}
sb.setCharAt(sb.length()-1, ')');
validTimeZoneChars= sb.toString();
}
}
/**
@ -812,7 +804,7 @@ public class FastDateParser implements DateParser, Serializable {
*/
@Override
boolean addRegex(final FastDateParser parser, final StringBuilder regex) {
regex.append(validTimeZoneChars);
regex.append(VALID_TZ);
return true;
}
@ -825,8 +817,8 @@ public class FastDateParser implements DateParser, Serializable {
if(value.charAt(0)=='+' || value.charAt(0)=='-') {
tz= TimeZone.getTimeZone("GMT"+value);
}
else if(value.startsWith("GMT")) {
tz= TimeZone.getTimeZone(value);
else if(value.regionMatches(true, 0, "GMT", 0, 3)) {
tz= TimeZone.getTimeZone(value.toUpperCase());
}
else {
tz= tzNames.get(value);

3
src/test/java/org/apache/commons/lang3/time/FastDateParserSDFTest.java
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@ -27,7 +27,6 @@ import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
@ -138,13 +137,11 @@ public class FastDateParserSDFTest {
}
@Test
@Ignore // not currently supported
public void testLowerCase() throws Exception {
checkParse(input.toLowerCase(locale));
}
@Test
@Ignore // not currently supported
public void testLowerCasePP() throws Exception {
checkParsePosition(input.toLowerCase(locale));
}

43
src/test/java/org/apache/commons/lang3/time/FastDateParserTest.java
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@ -21,6 +21,7 @@ import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.Serializable;
import java.text.DateFormatSymbols;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
@ -30,6 +31,7 @@ import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.TimeZone;
import java.util.regex.Pattern;
import org.apache.commons.lang3.SerializationUtils;
import org.junit.Assert;
@ -260,21 +262,21 @@ public class FastDateParserTest {
@Test
public void testTzParses() throws Exception {
// Check that all Locales can parse the time formats we use
for(final Locale locale : Locale.getAvailableLocales()) {
final FastDateParser fdp= new FastDateParser("yyyy/MM/dd z", TimeZone.getDefault(), locale);
for(final Locale locale : Locale.getAvailableLocales()) {
final FastDateParser fdp= new FastDateParser("yyyy/MM/dd z", TimeZone.getDefault(), locale);
for(final TimeZone tz : new TimeZone[]{NEW_YORK, REYKJAVIK, GMT}) {
final Calendar cal= Calendar.getInstance(tz, locale);
cal.clear();
cal.set(Calendar.YEAR, 2000);
cal.set(Calendar.MONTH, 1);
cal.set(Calendar.DAY_OF_MONTH, 10);
final Date expected= cal.getTime();
for(final TimeZone tz : new TimeZone[]{NEW_YORK, REYKJAVIK, GMT}) {
final Calendar cal= Calendar.getInstance(tz, locale);
cal.clear();
cal.set(Calendar.YEAR, 2000);
cal.set(Calendar.MONTH, 1);
cal.set(Calendar.DAY_OF_MONTH, 10);
final Date expected= cal.getTime();
final Date actual = fdp.parse("2000/02/10 "+tz.getDisplayName(locale));
Assert.assertEquals("tz:"+tz.getID()+" locale:"+locale.getDisplayName(), expected, actual);
}
}
final Date actual = fdp.parse("2000/02/10 "+tz.getDisplayName(locale));
Assert.assertEquals("tz:"+tz.getID()+" locale:"+locale.getDisplayName(), expected, actual);
}
}
}
@ -640,4 +642,19 @@ public class FastDateParserTest {
}
}
@Test
public void testTimeZoneStrategyPattern() {
Pattern tz = Pattern.compile(FastDateParser.TimeZoneStrategy.TZ_DATABASE);
Assert.assertFalse(tz.matcher("GMT-1234").matches());
for (Locale locale : Locale.getAvailableLocales()) {
final String[][] zones = DateFormatSymbols.getInstance(locale).getZoneStrings();
for (final String[] zone : zones) {
for (String zoneExpr : zone) {
Assert.assertTrue(locale.getDisplayName() + ":" + zoneExpr, tz.matcher(zoneExpr).matches());
}
}
}
}
}