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[LANG-865] LocaleUtils.toLocale does not parse strings starting with an underscore. 

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/lang/trunk@1428174 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Gary D. Gregory 2013-01-03 06:19:52 +00:00
parent bc255ccf5c
commit 4d46f014fb
3 changed files with 90 additions and 18 deletions
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1
src/changes/changes.xml
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@ -22,6 +22,7 @@
<body>
<release version="3.2" date="TBA" description="Next release">
<action issue="LANG-865" type="fix">LocaleUtils.toLocale does not parse strings starting with an underscore</action>
<action issue="LANG-835" type="add">StrBuilder should support StringBuilder as an input parameter</action>
<action issue="LANG-858" type="fix">StringEscapeUtils.escapeJava() and escapeEcmaScript() do not output the escaped surrogate pairs that are Java parsable</action>
<action issue="LANG-857" type="add">StringIndexOutOfBoundsException in CharSequenceTranslator</action>

61
src/main/java/org/apache/commons/lang3/LocaleUtils.java
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@ -85,41 +85,66 @@ public class LocaleUtils {
* @return a Locale, null if null input
* @throws IllegalArgumentException if the string is an invalid format
*/
public static Locale toLocale(String str) {
public static Locale toLocale(final String str) {
if (str == null) {
return null;
}
int len = str.length();
if (len != 2 && len != 5 && len < 7) {
final int len = str.length();
if (len < 2) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
char ch0 = str.charAt(0);
char ch1 = str.charAt(1);
if (ch0 < 'a' || ch0 > 'z' || ch1 < 'a' || ch1 > 'z') {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (len == 2) {
return new Locale(str, "");
final char ch0 = str.charAt(0);
if (ch0 == '_') {
if (len < 3) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
final char ch1 = str.charAt(1);
final char ch2 = str.charAt(2);
if (!Character.isUpperCase(ch1) || !Character.isUpperCase(ch2)) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (len == 3) {
return new Locale("", str.substring(1, 3));
}
if (len < 5) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (str.charAt(3) != '_') {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
return new Locale("", str.substring(1, 3), str.substring(4));
} else {
final char ch1 = str.charAt(1);
if (!Character.isLowerCase(ch0) || !Character.isLowerCase(ch1)) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (len == 2) {
return new Locale(str);
}
if (len < 5) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (str.charAt(2) != '_') {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
char ch3 = str.charAt(3);
final char ch3 = str.charAt(3);
if (ch3 == '_') {
return new Locale(str.substring(0, 2), "", str.substring(4));
}
char ch4 = str.charAt(4);
if (ch3 < 'A' || ch3 > 'Z' || ch4 < 'A' || ch4 > 'Z') {
final char ch4 = str.charAt(4);
if (!Character.isUpperCase(ch3) || !Character.isUpperCase(ch4)) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (len == 5) {
return new Locale(str.substring(0, 2), str.substring(3, 5));
} else {
if (str.charAt(5) != '_') {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
return new Locale(str.substring(0, 2), str.substring(3, 5), str.substring(6));
}
if (len < 7) {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
if (str.charAt(5) != '_') {
throw new IllegalArgumentException("Invalid locale format: " + str);
}
return new Locale(str.substring(0, 2), str.substring(3, 5), str.substring(6));
}
}

46
src/test/java/org/apache/commons/lang3/LocaleUtilsTest.java
View File

@ -493,7 +493,53 @@ public class LocaleUtilsTest {
*/
@Test
public void testLang328() {
assertValidToLocale("fr__P", "fr", "", "P");
assertValidToLocale("fr__POSIX", "fr", "", "POSIX");
}
/**
* Tests #LANG-865, strings starting with an underscore.
*/
@Test
public void testLang865() {
assertValidToLocale("_GB", "", "GB", "");
assertValidToLocale("_GB_P", "", "GB", "P");
assertValidToLocale("_GB_POSIX", "", "GB", "POSIX");
try {
LocaleUtils.toLocale("_G");
fail("Must be at least 3 chars if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_Gb");
fail("Must be uppercase if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_gB");
fail("Must be uppercase if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_1B");
fail("Must be letter if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_G1");
fail("Must be letter if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_GB_");
fail("Must be at least 5 chars if starts with underscore");
} catch (final IllegalArgumentException iae) {
}
try {
LocaleUtils.toLocale("_GBAP");
fail("Must have underscore after the country if starts with underscore and is at least 5 chars");
} catch (final IllegalArgumentException iae) {
}
}
}