6878475: Better syntax for the named capture group in regex
Summary: Updated the syntax of the newly added named capture group
Reviewed-by: martin, alanb
/*
* Copyright 1999-2009 Sun Microsystems, Inc. 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
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
/**
* @test
* @summary tests RegExp framework
* @author Mike McCloskey
* @bug 4481568 4482696 4495089 4504687 4527731 4599621 4631553 4619345
* 4630911 4672616 4711773 4727935 4750573 4792284 4803197 4757029 4808962
* 4872664 4803179 4892980 4900747 4945394 4938995 4979006 4994840 4997476
* 5013885 5003322 4988891 5098443 5110268 6173522 4829857 5027748 6376940
* 6358731 6178785 6284152 6231989 6497148 6486934 6233084 6504326 6635133
* 6350801 6676425 6878475
*/
import java.util.regex.*;
import java.util.Random;
import java.io.*;
import java.util.*;
import java.nio.CharBuffer;
/**
* This is a test class created to check the operation of
* the Pattern and Matcher classes.
*/
public class RegExTest {
private static Random generator = new Random();
private static boolean failure = false;
private static int failCount = 0;
/**
* Main to interpret arguments and run several tests.
*
*/
public static void main(String[] args) throws Exception {
// Most of the tests are in a file
processFile("TestCases.txt");
//processFile("PerlCases.txt");
processFile("BMPTestCases.txt");
processFile("SupplementaryTestCases.txt");
// These test many randomly generated char patterns
bm();
slice();
// These are hard to put into the file
escapes();
blankInput();
// Substitition tests on randomly generated sequences
globalSubstitute();
stringbufferSubstitute();
substitutionBasher();
// Canonical Equivalence
ceTest();
// Anchors
anchorTest();
// boolean match calls
matchesTest();
lookingAtTest();
// Pattern API
patternMatchesTest();
// Misc
lookbehindTest();
nullArgumentTest();
backRefTest();
groupCaptureTest();
caretTest();
charClassTest();
emptyPatternTest();
findIntTest();
group0Test();
longPatternTest();
octalTest();
ampersandTest();
negationTest();
splitTest();
appendTest();
caseFoldingTest();
commentsTest();
unixLinesTest();
replaceFirstTest();
gTest();
zTest();
serializeTest();
reluctantRepetitionTest();
multilineDollarTest();
dollarAtEndTest();
caretBetweenTerminatorsTest();
// This RFE rejected in Tiger numOccurrencesTest();
javaCharClassTest();
nonCaptureRepetitionTest();
notCapturedGroupCurlyMatchTest();
escapedSegmentTest();
literalPatternTest();
literalReplacementTest();
regionTest();
toStringTest();
negatedCharClassTest();
findFromTest();
boundsTest();
unicodeWordBoundsTest();
caretAtEndTest();
wordSearchTest();
hitEndTest();
toMatchResultTest();
surrogatesInClassTest();
namedGroupCaptureTest();
if (failure)
throw new RuntimeException("Failure in the RE handling.");
else
System.err.println("OKAY: All tests passed.");
}
// Utility functions
private static String getRandomAlphaString(int length) {
StringBuffer buf = new StringBuffer(length);
for (int i=0; i<length; i++) {
char randChar = (char)(97 + generator.nextInt(26));
buf.append(randChar);
}
return buf.toString();
}
private static void check(Matcher m, String expected) {
m.find();
if (!m.group().equals(expected))
failCount++;
}
private static void check(Matcher m, String result, boolean expected) {
m.find();
if (m.group().equals(result))
failCount += (expected) ? 0 : 1;
else
failCount += (expected) ? 1 : 0;
}
private static void check(Pattern p, String s, boolean expected) {
Matcher matcher = p.matcher(s);
if (matcher.find())
failCount += (expected) ? 0 : 1;
else
failCount += (expected) ? 1 : 0;
}
private static void check(String p, char c, boolean expected) {
String propertyPattern = expected ? "\\p" + p : "\\P" + p;
Pattern pattern = Pattern.compile(propertyPattern);
char[] ca = new char[1]; ca[0] = c;
Matcher matcher = pattern.matcher(new String(ca));
if (!matcher.find())
failCount++;
}
private static void check(String p, int codePoint, boolean expected) {
String propertyPattern = expected ? "\\p" + p : "\\P" + p;
Pattern pattern = Pattern.compile(propertyPattern);
char[] ca = Character.toChars(codePoint);
Matcher matcher = pattern.matcher(new String(ca));
if (!matcher.find())
failCount++;
}
private static void check(String p, int flag, String input, String s,
boolean expected)
{
Pattern pattern = Pattern.compile(p, flag);
Matcher matcher = pattern.matcher(input);
if (expected)
check(matcher, s, expected);
else
check(pattern, input, false);
}
private static void report(String testName) {
int spacesToAdd = 30 - testName.length();
StringBuffer paddedNameBuffer = new StringBuffer(testName);
for (int i=0; i<spacesToAdd; i++)
paddedNameBuffer.append(" ");
String paddedName = paddedNameBuffer.toString();
System.err.println(paddedName + ": " +
(failCount==0 ? "Passed":"Failed("+failCount+")"));
if (failCount > 0)
failure = true;
failCount = 0;
}
/**
* Converts ASCII alphabet characters [A-Za-z] in the given 's' to
* supplementary characters. This method does NOT fully take care
* of the regex syntax.
*/
private static String toSupplementaries(String s) {
int length = s.length();
StringBuffer sb = new StringBuffer(length * 2);
for (int i = 0; i < length; ) {
char c = s.charAt(i++);
if (c == '\\') {
sb.append(c);
if (i < length) {
c = s.charAt(i++);
sb.append(c);
if (c == 'u') {
// assume no syntax error
sb.append(s.charAt(i++));
sb.append(s.charAt(i++));
sb.append(s.charAt(i++));
sb.append(s.charAt(i++));
}
}
} else if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) {
sb.append('\ud800').append((char)('\udc00'+c));
} else {
sb.append(c);
}
}
return sb.toString();
}
// Regular expression tests
// This is for bug 6178785
// Test if an expected NPE gets thrown when passing in a null argument
private static boolean check(Runnable test) {
try {
test.run();
failCount++;
return false;
} catch (NullPointerException npe) {
return true;
}
}
private static void nullArgumentTest() {
check(new Runnable() { public void run() { Pattern.compile(null); }});
check(new Runnable() { public void run() { Pattern.matches(null, null); }});
check(new Runnable() { public void run() { Pattern.matches("xyz", null);}});
check(new Runnable() { public void run() { Pattern.quote(null);}});
check(new Runnable() { public void run() { Pattern.compile("xyz").split(null);}});
check(new Runnable() { public void run() { Pattern.compile("xyz").matcher(null);}});
final Matcher m = Pattern.compile("xyz").matcher("xyz");
m.matches();
check(new Runnable() { public void run() { m.appendTail(null);}});
check(new Runnable() { public void run() { m.replaceAll(null);}});
check(new Runnable() { public void run() { m.replaceFirst(null);}});
check(new Runnable() { public void run() { m.appendReplacement(null, null);}});
check(new Runnable() { public void run() { m.reset(null);}});
check(new Runnable() { public void run() { Matcher.quoteReplacement(null);}});
//check(new Runnable() { public void run() { m.usePattern(null);}});
report("Null Argument");
}
// This is for bug6635133
// Test if surrogate pair in Unicode escapes can be handled correctly.
private static void surrogatesInClassTest() throws Exception {
Pattern pattern = Pattern.compile("[\\ud834\\udd21-\\ud834\\udd24]");
Matcher matcher = pattern.matcher("\ud834\udd22");
if (!matcher.find())
failCount++;
}
// This is for bug 4988891
// Test toMatchResult to see that it is a copy of the Matcher
// that is not affected by subsequent operations on the original
private static void toMatchResultTest() throws Exception {
Pattern pattern = Pattern.compile("squid");
Matcher matcher = pattern.matcher(
"agiantsquidofdestinyasmallsquidoffate");
matcher.find();
int matcherStart1 = matcher.start();
MatchResult mr = matcher.toMatchResult();
if (mr == matcher)
failCount++;
int resultStart1 = mr.start();
if (matcherStart1 != resultStart1)
failCount++;
matcher.find();
int matcherStart2 = matcher.start();
int resultStart2 = mr.start();
if (matcherStart2 == resultStart2)
failCount++;
if (resultStart1 != resultStart2)
failCount++;
MatchResult mr2 = matcher.toMatchResult();
if (mr == mr2)
failCount++;
if (mr2.start() != matcherStart2)
failCount++;
report("toMatchResult is a copy");
}
// This is for bug 5013885
// Must test a slice to see if it reports hitEnd correctly
private static void hitEndTest() throws Exception {
// Basic test of Slice node
Pattern p = Pattern.compile("^squidattack");
Matcher m = p.matcher("squack");
m.find();
if (m.hitEnd())
failCount++;
m.reset("squid");
m.find();
if (!m.hitEnd())
failCount++;
// Test Slice, SliceA and SliceU nodes
for (int i=0; i<3; i++) {
int flags = 0;
if (i==1) flags = Pattern.CASE_INSENSITIVE;
if (i==2) flags = Pattern.UNICODE_CASE;
p = Pattern.compile("^abc", flags);
m = p.matcher("ad");
m.find();
if (m.hitEnd())
failCount++;
m.reset("ab");
m.find();
if (!m.hitEnd())
failCount++;
}
// Test Boyer-Moore node
p = Pattern.compile("catattack");
m = p.matcher("attack");
m.find();
if (!m.hitEnd())
failCount++;
p = Pattern.compile("catattack");
m = p.matcher("attackattackattackcatatta");
m.find();
if (!m.hitEnd())
failCount++;
report("hitEnd from a Slice");
}
// This is for bug 4997476
// It is weird code submitted by customer demonstrating a regression
private static void wordSearchTest() throws Exception {
String testString = new String("word1 word2 word3");
Pattern p = Pattern.compile("\\b");
Matcher m = p.matcher(testString);
int position = 0;
int start = 0;
while (m.find(position)) {
start = m.start();
if (start == testString.length())
break;
if (m.find(start+1)) {
position = m.start();
} else {
position = testString.length();
}
if (testString.substring(start, position).equals(" "))
continue;
if (!testString.substring(start, position-1).startsWith("word"))
failCount++;
}
report("Customer word search");
}
// This is for bug 4994840
private static void caretAtEndTest() throws Exception {
// Problem only occurs with multiline patterns
// containing a beginning-of-line caret "^" followed
// by an expression that also matches the empty string.
Pattern pattern = Pattern.compile("^x?", Pattern.MULTILINE);
Matcher matcher = pattern.matcher("\r");
matcher.find();
matcher.find();
report("Caret at end");
}
// This test is for 4979006
// Check to see if word boundary construct properly handles unicode
// non spacing marks
private static void unicodeWordBoundsTest() throws Exception {
String spaces = " ";
String wordChar = "a";
String nsm = "\u030a";
assert (Character.getType('\u030a') == Character.NON_SPACING_MARK);
Pattern pattern = Pattern.compile("\\b");
Matcher matcher = pattern.matcher("");
// S=other B=word character N=non spacing mark .=word boundary
// SS.BB.SS
String input = spaces + wordChar + wordChar + spaces;
twoFindIndexes(input, matcher, 2, 4);
// SS.BBN.SS
input = spaces + wordChar +wordChar + nsm + spaces;
twoFindIndexes(input, matcher, 2, 5);
// SS.BN.SS
input = spaces + wordChar + nsm + spaces;
twoFindIndexes(input, matcher, 2, 4);
// SS.BNN.SS
input = spaces + wordChar + nsm + nsm + spaces;
twoFindIndexes(input, matcher, 2, 5);
// SSN.BB.SS
input = spaces + nsm + wordChar + wordChar + spaces;
twoFindIndexes(input, matcher, 3, 5);
// SS.BNB.SS
input = spaces + wordChar + nsm + wordChar + spaces;
twoFindIndexes(input, matcher, 2, 5);
// SSNNSS
input = spaces + nsm + nsm + spaces;
matcher.reset(input);
if (matcher.find())
failCount++;
// SSN.BBN.SS
input = spaces + nsm + wordChar + wordChar + nsm + spaces;
twoFindIndexes(input, matcher, 3, 6);
report("Unicode word boundary");
}
private static void twoFindIndexes(String input, Matcher matcher, int a,
int b) throws Exception
{
matcher.reset(input);
matcher.find();
if (matcher.start() != a)
failCount++;
matcher.find();
if (matcher.start() != b)
failCount++;
}
// This test is for 6284152
static void check(String regex, String input, String[] expected) {
List<String> result = new ArrayList<String>();
Pattern p = Pattern.compile(regex);
Matcher m = p.matcher(input);
while (m.find()) {
result.add(m.group());
}
if (!Arrays.asList(expected).equals(result))
failCount++;
}
private static void lookbehindTest() throws Exception {
//Positive
check("(?<=%.{0,5})foo\\d",
"%foo1\n%bar foo2\n%bar foo3\n%blahblah foo4\nfoo5",
new String[]{"foo1", "foo2", "foo3"});
//boundary at end of the lookbehind sub-regex should work consistently
//with the boundary just after the lookbehind sub-regex
check("(?<=.*\\b)foo", "abcd foo", new String[]{"foo"});
check("(?<=.*)\\bfoo", "abcd foo", new String[]{"foo"});
check("(?<!abc )\\bfoo", "abc foo", new String[0]);
check("(?<!abc \\b)foo", "abc foo", new String[0]);
//Negative
check("(?<!%.{0,5})foo\\d",
"%foo1\n%bar foo2\n%bar foo3\n%blahblah foo4\nfoo5",
new String[] {"foo4", "foo5"});
//Positive greedy
check("(?<=%b{1,4})foo", "%bbbbfoo", new String[] {"foo"});
//Positive reluctant
check("(?<=%b{1,4}?)foo", "%bbbbfoo", new String[] {"foo"});
//supplementary
check("(?<=%b{1,4})fo\ud800\udc00o", "%bbbbfo\ud800\udc00o",
new String[] {"fo\ud800\udc00o"});
check("(?<=%b{1,4}?)fo\ud800\udc00o", "%bbbbfo\ud800\udc00o",
new String[] {"fo\ud800\udc00o"});
check("(?<!%b{1,4})fo\ud800\udc00o", "%afo\ud800\udc00o",
new String[] {"fo\ud800\udc00o"});
check("(?<!%b{1,4}?)fo\ud800\udc00o", "%afo\ud800\udc00o",
new String[] {"fo\ud800\udc00o"});
report("Lookbehind");
}
// This test is for 4938995
// Check to see if weak region boundaries are transparent to
// lookahead and lookbehind constructs
private static void boundsTest() throws Exception {
String fullMessage = "catdogcat";
Pattern pattern = Pattern.compile("(?<=cat)dog(?=cat)");
Matcher matcher = pattern.matcher("catdogca");
matcher.useTransparentBounds(true);
if (matcher.find())
failCount++;
matcher.reset("atdogcat");
if (matcher.find())
failCount++;
matcher.reset(fullMessage);
if (!matcher.find())
failCount++;
matcher.reset(fullMessage);
matcher.region(0,9);
if (!matcher.find())
failCount++;
matcher.reset(fullMessage);
matcher.region(0,6);
if (!matcher.find())
failCount++;
matcher.reset(fullMessage);
matcher.region(3,6);
if (!matcher.find())
failCount++;
matcher.useTransparentBounds(false);
if (matcher.find())
failCount++;
// Negative lookahead/lookbehind
pattern = Pattern.compile("(?<!cat)dog(?!cat)");
matcher = pattern.matcher("dogcat");
matcher.useTransparentBounds(true);
matcher.region(0,3);
if (matcher.find())
failCount++;
matcher.reset("catdog");
matcher.region(3,6);
if (matcher.find())
failCount++;
matcher.useTransparentBounds(false);
matcher.reset("dogcat");
matcher.region(0,3);
if (!matcher.find())
failCount++;
matcher.reset("catdog");
matcher.region(3,6);
if (!matcher.find())
failCount++;
report("Region bounds transparency");
}
// This test is for 4945394
private static void findFromTest() throws Exception {
String message = "This is 40 $0 message.";
Pattern pat = Pattern.compile("\\$0");
Matcher match = pat.matcher(message);
if (!match.find())
failCount++;
if (match.find())
failCount++;
if (match.find())
failCount++;
report("Check for alternating find");
}
// This test is for 4872664 and 4892980
private static void negatedCharClassTest() throws Exception {
Pattern pattern = Pattern.compile("[^>]");
Matcher matcher = pattern.matcher("\u203A");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("[^fr]");
matcher = pattern.matcher("a");
if (!matcher.find())
failCount++;
matcher.reset("\u203A");
if (!matcher.find())
failCount++;
String s = "for";
String result[] = s.split("[^fr]");
if (!result[0].equals("f"))
failCount++;
if (!result[1].equals("r"))
failCount++;
s = "f\u203Ar";
result = s.split("[^fr]");
if (!result[0].equals("f"))
failCount++;
if (!result[1].equals("r"))
failCount++;
// Test adding to bits, subtracting a node, then adding to bits again
pattern = Pattern.compile("[^f\u203Ar]");
matcher = pattern.matcher("a");
if (!matcher.find())
failCount++;
matcher.reset("f");
if (matcher.find())
failCount++;
matcher.reset("\u203A");
if (matcher.find())
failCount++;
matcher.reset("r");
if (matcher.find())
failCount++;
matcher.reset("\u203B");
if (!matcher.find())
failCount++;
// Test subtracting a node, adding to bits, subtracting again
pattern = Pattern.compile("[^\u203Ar\u203B]");
matcher = pattern.matcher("a");
if (!matcher.find())
failCount++;
matcher.reset("\u203A");
if (matcher.find())
failCount++;
matcher.reset("r");
if (matcher.find())
failCount++;
matcher.reset("\u203B");
if (matcher.find())
failCount++;
matcher.reset("\u203C");
if (!matcher.find())
failCount++;
report("Negated Character Class");
}
// This test is for 4628291
private static void toStringTest() throws Exception {
Pattern pattern = Pattern.compile("b+");
if (pattern.toString() != "b+")
failCount++;
Matcher matcher = pattern.matcher("aaabbbccc");
String matcherString = matcher.toString(); // unspecified
matcher.find();
matcherString = matcher.toString(); // unspecified
matcher.region(0,3);
matcherString = matcher.toString(); // unspecified
matcher.reset();
matcherString = matcher.toString(); // unspecified
report("toString");
}
// This test is for 4808962
private static void literalPatternTest() throws Exception {
int flags = Pattern.LITERAL;
Pattern pattern = Pattern.compile("abc\\t$^", flags);
check(pattern, "abc\\t$^", true);
pattern = Pattern.compile(Pattern.quote("abc\\t$^"));
check(pattern, "abc\\t$^", true);
pattern = Pattern.compile("\\Qa^$bcabc\\E", flags);
check(pattern, "\\Qa^$bcabc\\E", true);
check(pattern, "a^$bcabc", false);
pattern = Pattern.compile("\\\\Q\\\\E");
check(pattern, "\\Q\\E", true);
pattern = Pattern.compile("\\Qabc\\Eefg\\\\Q\\\\Ehij");
check(pattern, "abcefg\\Q\\Ehij", true);
pattern = Pattern.compile("\\\\\\Q\\\\E");
check(pattern, "\\\\\\\\", true);
pattern = Pattern.compile(Pattern.quote("\\Qa^$bcabc\\E"));
check(pattern, "\\Qa^$bcabc\\E", true);
check(pattern, "a^$bcabc", false);
pattern = Pattern.compile(Pattern.quote("\\Qabc\\Edef"));
check(pattern, "\\Qabc\\Edef", true);
check(pattern, "abcdef", false);
pattern = Pattern.compile(Pattern.quote("abc\\Edef"));
check(pattern, "abc\\Edef", true);
check(pattern, "abcdef", false);
pattern = Pattern.compile(Pattern.quote("\\E"));
check(pattern, "\\E", true);
pattern = Pattern.compile("((((abc.+?:)", flags);
check(pattern, "((((abc.+?:)", true);
flags |= Pattern.MULTILINE;
pattern = Pattern.compile("^cat$", flags);
check(pattern, "abc^cat$def", true);
check(pattern, "cat", false);
flags |= Pattern.CASE_INSENSITIVE;
pattern = Pattern.compile("abcdef", flags);
check(pattern, "ABCDEF", true);
check(pattern, "AbCdEf", true);
flags |= Pattern.DOTALL;
pattern = Pattern.compile("a...b", flags);
check(pattern, "A...b", true);
check(pattern, "Axxxb", false);
flags |= Pattern.CANON_EQ;
Pattern p = Pattern.compile("testa\u030a", flags);
check(pattern, "testa\u030a", false);
check(pattern, "test\u00e5", false);
// Supplementary character test
flags = Pattern.LITERAL;
pattern = Pattern.compile(toSupplementaries("abc\\t$^"), flags);
check(pattern, toSupplementaries("abc\\t$^"), true);
pattern = Pattern.compile(Pattern.quote(toSupplementaries("abc\\t$^")));
check(pattern, toSupplementaries("abc\\t$^"), true);
pattern = Pattern.compile(toSupplementaries("\\Qa^$bcabc\\E"), flags);
check(pattern, toSupplementaries("\\Qa^$bcabc\\E"), true);
check(pattern, toSupplementaries("a^$bcabc"), false);
pattern = Pattern.compile(Pattern.quote(toSupplementaries("\\Qa^$bcabc\\E")));
check(pattern, toSupplementaries("\\Qa^$bcabc\\E"), true);
check(pattern, toSupplementaries("a^$bcabc"), false);
pattern = Pattern.compile(Pattern.quote(toSupplementaries("\\Qabc\\Edef")));
check(pattern, toSupplementaries("\\Qabc\\Edef"), true);
check(pattern, toSupplementaries("abcdef"), false);
pattern = Pattern.compile(Pattern.quote(toSupplementaries("abc\\Edef")));
check(pattern, toSupplementaries("abc\\Edef"), true);
check(pattern, toSupplementaries("abcdef"), false);
pattern = Pattern.compile(toSupplementaries("((((abc.+?:)"), flags);
check(pattern, toSupplementaries("((((abc.+?:)"), true);
flags |= Pattern.MULTILINE;
pattern = Pattern.compile(toSupplementaries("^cat$"), flags);
check(pattern, toSupplementaries("abc^cat$def"), true);
check(pattern, toSupplementaries("cat"), false);
flags |= Pattern.DOTALL;
// note: this is case-sensitive.
pattern = Pattern.compile(toSupplementaries("a...b"), flags);
check(pattern, toSupplementaries("a...b"), true);
check(pattern, toSupplementaries("axxxb"), false);
flags |= Pattern.CANON_EQ;
String t = toSupplementaries("test");
p = Pattern.compile(t + "a\u030a", flags);
check(pattern, t + "a\u030a", false);
check(pattern, t + "\u00e5", false);
report("Literal pattern");
}
// This test is for 4803179
// This test is also for 4808962, replacement parts
private static void literalReplacementTest() throws Exception {
int flags = Pattern.LITERAL;
Pattern pattern = Pattern.compile("abc", flags);
Matcher matcher = pattern.matcher("zzzabczzz");
String replaceTest = "$0";
String result = matcher.replaceAll(replaceTest);
if (!result.equals("zzzabczzz"))
failCount++;
matcher.reset();
String literalReplacement = matcher.quoteReplacement(replaceTest);
result = matcher.replaceAll(literalReplacement);
if (!result.equals("zzz$0zzz"))
failCount++;
matcher.reset();
replaceTest = "\\t$\\$";
literalReplacement = matcher.quoteReplacement(replaceTest);
result = matcher.replaceAll(literalReplacement);
if (!result.equals("zzz\\t$\\$zzz"))
failCount++;
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("abc"), flags);
matcher = pattern.matcher(toSupplementaries("zzzabczzz"));
replaceTest = "$0";
result = matcher.replaceAll(replaceTest);
if (!result.equals(toSupplementaries("zzzabczzz")))
failCount++;
matcher.reset();
literalReplacement = matcher.quoteReplacement(replaceTest);
result = matcher.replaceAll(literalReplacement);
if (!result.equals(toSupplementaries("zzz$0zzz")))
failCount++;
matcher.reset();
replaceTest = "\\t$\\$";
literalReplacement = matcher.quoteReplacement(replaceTest);
result = matcher.replaceAll(literalReplacement);
if (!result.equals(toSupplementaries("zzz\\t$\\$zzz")))
failCount++;
report("Literal replacement");
}
// This test is for 4757029
private static void regionTest() throws Exception {
Pattern pattern = Pattern.compile("abc");
Matcher matcher = pattern.matcher("abcdefabc");
matcher.region(0,9);
if (!matcher.find())
failCount++;
if (!matcher.find())
failCount++;
matcher.region(0,3);
if (!matcher.find())
failCount++;
matcher.region(3,6);
if (matcher.find())
failCount++;
matcher.region(0,2);
if (matcher.find())
failCount++;
expectRegionFail(matcher, 1, -1);
expectRegionFail(matcher, -1, -1);
expectRegionFail(matcher, -1, 1);
expectRegionFail(matcher, 5, 3);
expectRegionFail(matcher, 5, 12);
expectRegionFail(matcher, 12, 12);
pattern = Pattern.compile("^abc$");
matcher = pattern.matcher("zzzabczzz");
matcher.region(0,9);
if (matcher.find())
failCount++;
matcher.region(3,6);
if (!matcher.find())
failCount++;
matcher.region(3,6);
matcher.useAnchoringBounds(false);
if (matcher.find())
failCount++;
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("abc"));
matcher = pattern.matcher(toSupplementaries("abcdefabc"));
matcher.region(0,9*2);
if (!matcher.find())
failCount++;
if (!matcher.find())
failCount++;
matcher.region(0,3*2);
if (!matcher.find())
failCount++;
matcher.region(1,3*2);
if (matcher.find())
failCount++;
matcher.region(3*2,6*2);
if (matcher.find())
failCount++;
matcher.region(0,2*2);
if (matcher.find())
failCount++;
matcher.region(0,2*2+1);
if (matcher.find())
failCount++;
expectRegionFail(matcher, 1*2, -1);
expectRegionFail(matcher, -1, -1);
expectRegionFail(matcher, -1, 1*2);
expectRegionFail(matcher, 5*2, 3*2);
expectRegionFail(matcher, 5*2, 12*2);
expectRegionFail(matcher, 12*2, 12*2);
pattern = Pattern.compile(toSupplementaries("^abc$"));
matcher = pattern.matcher(toSupplementaries("zzzabczzz"));
matcher.region(0,9*2);
if (matcher.find())
failCount++;
matcher.region(3*2,6*2);
if (!matcher.find())
failCount++;
matcher.region(3*2+1,6*2);
if (matcher.find())
failCount++;
matcher.region(3*2,6*2-1);
if (matcher.find())
failCount++;
matcher.region(3*2,6*2);
matcher.useAnchoringBounds(false);
if (matcher.find())
failCount++;
report("Regions");
}
private static void expectRegionFail(Matcher matcher, int index1,
int index2)
{
try {
matcher.region(index1, index2);
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Correct result
} catch (IllegalStateException ise) {
// Correct result
}
}
// This test is for 4803197
private static void escapedSegmentTest() throws Exception {
Pattern pattern = Pattern.compile("\\Qdir1\\dir2\\E");
check(pattern, "dir1\\dir2", true);
pattern = Pattern.compile("\\Qdir1\\dir2\\\\E");
check(pattern, "dir1\\dir2\\", true);
pattern = Pattern.compile("(\\Qdir1\\dir2\\\\E)");
check(pattern, "dir1\\dir2\\", true);
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("\\Qdir1\\dir2\\E"));
check(pattern, toSupplementaries("dir1\\dir2"), true);
pattern = Pattern.compile(toSupplementaries("\\Qdir1\\dir2")+"\\\\E");
check(pattern, toSupplementaries("dir1\\dir2\\"), true);
pattern = Pattern.compile(toSupplementaries("(\\Qdir1\\dir2")+"\\\\E)");
check(pattern, toSupplementaries("dir1\\dir2\\"), true);
report("Escaped segment");
}
// This test is for 4792284
private static void nonCaptureRepetitionTest() throws Exception {
String input = "abcdefgh;";
String[] patterns = new String[] {
"(?:\\w{4})+;",
"(?:\\w{8})*;",
"(?:\\w{2}){2,4};",
"(?:\\w{4}){2,};", // only matches the
".*?(?:\\w{5})+;", // specified minimum
".*?(?:\\w{9})*;", // number of reps - OK
"(?:\\w{4})+?;", // lazy repetition - OK
"(?:\\w{4})++;", // possessive repetition - OK
"(?:\\w{2,}?)+;", // non-deterministic - OK
"(\\w{4})+;", // capturing group - OK
};
for (int i = 0; i < patterns.length; i++) {
// Check find()
check(patterns[i], 0, input, input, true);
// Check matches()
Pattern p = Pattern.compile(patterns[i]);
Matcher m = p.matcher(input);
if (m.matches()) {
if (!m.group(0).equals(input))
failCount++;
} else {
failCount++;
}
}
report("Non capturing repetition");
}
// This test is for 6358731
private static void notCapturedGroupCurlyMatchTest() throws Exception {
Pattern pattern = Pattern.compile("(abc)+|(abcd)+");
Matcher matcher = pattern.matcher("abcd");
if (!matcher.matches() ||
matcher.group(1) != null ||
!matcher.group(2).equals("abcd")) {
failCount++;
}
report("Not captured GroupCurly");
}
// This test is for 4706545
private static void javaCharClassTest() throws Exception {
for (int i=0; i<1000; i++) {
char c = (char)generator.nextInt();
check("{javaLowerCase}", c, Character.isLowerCase(c));
check("{javaUpperCase}", c, Character.isUpperCase(c));
check("{javaUpperCase}+", c, Character.isUpperCase(c));
check("{javaTitleCase}", c, Character.isTitleCase(c));
check("{javaDigit}", c, Character.isDigit(c));
check("{javaDefined}", c, Character.isDefined(c));
check("{javaLetter}", c, Character.isLetter(c));
check("{javaLetterOrDigit}", c, Character.isLetterOrDigit(c));
check("{javaJavaIdentifierStart}", c,
Character.isJavaIdentifierStart(c));
check("{javaJavaIdentifierPart}", c,
Character.isJavaIdentifierPart(c));
check("{javaUnicodeIdentifierStart}", c,
Character.isUnicodeIdentifierStart(c));
check("{javaUnicodeIdentifierPart}", c,
Character.isUnicodeIdentifierPart(c));
check("{javaIdentifierIgnorable}", c,
Character.isIdentifierIgnorable(c));
check("{javaSpaceChar}", c, Character.isSpaceChar(c));
check("{javaWhitespace}", c, Character.isWhitespace(c));
check("{javaISOControl}", c, Character.isISOControl(c));
check("{javaMirrored}", c, Character.isMirrored(c));
}
// Supplementary character test
for (int i=0; i<1000; i++) {
int c = generator.nextInt(Character.MAX_CODE_POINT
- Character.MIN_SUPPLEMENTARY_CODE_POINT)
+ Character.MIN_SUPPLEMENTARY_CODE_POINT;
check("{javaLowerCase}", c, Character.isLowerCase(c));
check("{javaUpperCase}", c, Character.isUpperCase(c));
check("{javaUpperCase}+", c, Character.isUpperCase(c));
check("{javaTitleCase}", c, Character.isTitleCase(c));
check("{javaDigit}", c, Character.isDigit(c));
check("{javaDefined}", c, Character.isDefined(c));
check("{javaLetter}", c, Character.isLetter(c));
check("{javaLetterOrDigit}", c, Character.isLetterOrDigit(c));
check("{javaJavaIdentifierStart}", c,
Character.isJavaIdentifierStart(c));
check("{javaJavaIdentifierPart}", c,
Character.isJavaIdentifierPart(c));
check("{javaUnicodeIdentifierStart}", c,
Character.isUnicodeIdentifierStart(c));
check("{javaUnicodeIdentifierPart}", c,
Character.isUnicodeIdentifierPart(c));
check("{javaIdentifierIgnorable}", c,
Character.isIdentifierIgnorable(c));
check("{javaSpaceChar}", c, Character.isSpaceChar(c));
check("{javaWhitespace}", c, Character.isWhitespace(c));
check("{javaISOControl}", c, Character.isISOControl(c));
check("{javaMirrored}", c, Character.isMirrored(c));
}
report("Java character classes");
}
// This test is for 4523620
/*
private static void numOccurrencesTest() throws Exception {
Pattern pattern = Pattern.compile("aaa");
if (pattern.numOccurrences("aaaaaa", false) != 2)
failCount++;
if (pattern.numOccurrences("aaaaaa", true) != 4)
failCount++;
pattern = Pattern.compile("^");
if (pattern.numOccurrences("aaaaaa", false) != 1)
failCount++;
if (pattern.numOccurrences("aaaaaa", true) != 1)
failCount++;
report("Number of Occurrences");
}
*/
// This test is for 4776374
private static void caretBetweenTerminatorsTest() throws Exception {
int flags1 = Pattern.DOTALL;
int flags2 = Pattern.DOTALL | Pattern.UNIX_LINES;
int flags3 = Pattern.DOTALL | Pattern.UNIX_LINES | Pattern.MULTILINE;
int flags4 = Pattern.DOTALL | Pattern.MULTILINE;
check("^....", flags1, "test\ntest", "test", true);
check(".....^", flags1, "test\ntest", "test", false);
check(".....^", flags1, "test\n", "test", false);
check("....^", flags1, "test\r\n", "test", false);
check("^....", flags2, "test\ntest", "test", true);
check("....^", flags2, "test\ntest", "test", false);
check(".....^", flags2, "test\n", "test", false);
check("....^", flags2, "test\r\n", "test", false);
check("^....", flags3, "test\ntest", "test", true);
check(".....^", flags3, "test\ntest", "test\n", true);
check(".....^", flags3, "test\u0085test", "test\u0085", false);
check(".....^", flags3, "test\n", "test", false);
check(".....^", flags3, "test\r\n", "test", false);
check("......^", flags3, "test\r\ntest", "test\r\n", true);
check("^....", flags4, "test\ntest", "test", true);
check(".....^", flags3, "test\ntest", "test\n", true);
check(".....^", flags4, "test\u0085test", "test\u0085", true);
check(".....^", flags4, "test\n", "test\n", false);
check(".....^", flags4, "test\r\n", "test\r", false);
// Supplementary character test
String t = toSupplementaries("test");
check("^....", flags1, t+"\n"+t, t, true);
check(".....^", flags1, t+"\n"+t, t, false);
check(".....^", flags1, t+"\n", t, false);
check("....^", flags1, t+"\r\n", t, false);
check("^....", flags2, t+"\n"+t, t, true);
check("....^", flags2, t+"\n"+t, t, false);
check(".....^", flags2, t+"\n", t, false);
check("....^", flags2, t+"\r\n", t, false);
check("^....", flags3, t+"\n"+t, t, true);
check(".....^", flags3, t+"\n"+t, t+"\n", true);
check(".....^", flags3, t+"\u0085"+t, t+"\u0085", false);
check(".....^", flags3, t+"\n", t, false);
check(".....^", flags3, t+"\r\n", t, false);
check("......^", flags3, t+"\r\n"+t, t+"\r\n", true);
check("^....", flags4, t+"\n"+t, t, true);
check(".....^", flags3, t+"\n"+t, t+"\n", true);
check(".....^", flags4, t+"\u0085"+t, t+"\u0085", true);
check(".....^", flags4, t+"\n", t+"\n", false);
check(".....^", flags4, t+"\r\n", t+"\r", false);
report("Caret between terminators");
}
// This test is for 4727935
private static void dollarAtEndTest() throws Exception {
int flags1 = Pattern.DOTALL;
int flags2 = Pattern.DOTALL | Pattern.UNIX_LINES;
int flags3 = Pattern.DOTALL | Pattern.MULTILINE;
check("....$", flags1, "test\n", "test", true);
check("....$", flags1, "test\r\n", "test", true);
check(".....$", flags1, "test\n", "test\n", true);
check(".....$", flags1, "test\u0085", "test\u0085", true);
check("....$", flags1, "test\u0085", "test", true);
check("....$", flags2, "test\n", "test", true);
check(".....$", flags2, "test\n", "test\n", true);
check(".....$", flags2, "test\u0085", "test\u0085", true);
check("....$", flags2, "test\u0085", "est\u0085", true);
check("....$.blah", flags3, "test\nblah", "test\nblah", true);
check(".....$.blah", flags3, "test\n\nblah", "test\n\nblah", true);
check("....$blah", flags3, "test\nblah", "!!!!", false);
check(".....$blah", flags3, "test\nblah", "!!!!", false);
// Supplementary character test
String t = toSupplementaries("test");
String b = toSupplementaries("blah");
check("....$", flags1, t+"\n", t, true);
check("....$", flags1, t+"\r\n", t, true);
check(".....$", flags1, t+"\n", t+"\n", true);
check(".....$", flags1, t+"\u0085", t+"\u0085", true);
check("....$", flags1, t+"\u0085", t, true);
check("....$", flags2, t+"\n", t, true);
check(".....$", flags2, t+"\n", t+"\n", true);
check(".....$", flags2, t+"\u0085", t+"\u0085", true);
check("....$", flags2, t+"\u0085", toSupplementaries("est\u0085"), true);
check("....$."+b, flags3, t+"\n"+b, t+"\n"+b, true);
check(".....$."+b, flags3, t+"\n\n"+b, t+"\n\n"+b, true);
check("....$"+b, flags3, t+"\n"+b, "!!!!", false);
check(".....$"+b, flags3, t+"\n"+b, "!!!!", false);
report("Dollar at End");
}
// This test is for 4711773
private static void multilineDollarTest() throws Exception {
Pattern findCR = Pattern.compile("$", Pattern.MULTILINE);
Matcher matcher = findCR.matcher("first bit\nsecond bit");
matcher.find();
if (matcher.start(0) != 9)
failCount++;
matcher.find();
if (matcher.start(0) != 20)
failCount++;
// Supplementary character test
matcher = findCR.matcher(toSupplementaries("first bit\n second bit")); // double BMP chars
matcher.find();
if (matcher.start(0) != 9*2)
failCount++;
matcher.find();
if (matcher.start(0) != 20*2)
failCount++;
report("Multiline Dollar");
}
private static void reluctantRepetitionTest() throws Exception {
Pattern p = Pattern.compile("1(\\s\\S+?){1,3}?[\\s,]2");
check(p, "1 word word word 2", true);
check(p, "1 wor wo w 2", true);
check(p, "1 word word 2", true);
check(p, "1 word 2", true);
check(p, "1 wo w w 2", true);
check(p, "1 wo w 2", true);
check(p, "1 wor w 2", true);
p = Pattern.compile("([a-z])+?c");
Matcher m = p.matcher("ababcdefdec");
check(m, "ababc");
// Supplementary character test
p = Pattern.compile(toSupplementaries("([a-z])+?c"));
m = p.matcher(toSupplementaries("ababcdefdec"));
check(m, toSupplementaries("ababc"));
report("Reluctant Repetition");
}
private static void serializeTest() throws Exception {
String patternStr = "(b)";
String matchStr = "b";
Pattern pattern = Pattern.compile(patternStr);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ObjectOutputStream oos = new ObjectOutputStream(baos);
oos.writeObject(pattern);
oos.close();
ObjectInputStream ois = new ObjectInputStream(
new ByteArrayInputStream(baos.toByteArray()));
Pattern serializedPattern = (Pattern)ois.readObject();
ois.close();
Matcher matcher = serializedPattern.matcher(matchStr);
if (!matcher.matches())
failCount++;
if (matcher.groupCount() != 1)
failCount++;
report("Serialization");
}
private static void gTest() {
Pattern pattern = Pattern.compile("\\G\\w");
Matcher matcher = pattern.matcher("abc#x#x");
matcher.find();
matcher.find();
matcher.find();
if (matcher.find())
failCount++;
pattern = Pattern.compile("\\GA*");
matcher = pattern.matcher("1A2AA3");
matcher.find();
if (matcher.find())
failCount++;
pattern = Pattern.compile("\\GA*");
matcher = pattern.matcher("1A2AA3");
if (!matcher.find(1))
failCount++;
matcher.find();
if (matcher.find())
failCount++;
report("\\G");
}
private static void zTest() {
Pattern pattern = Pattern.compile("foo\\Z");
// Positives
check(pattern, "foo\u0085", true);
check(pattern, "foo\u2028", true);
check(pattern, "foo\u2029", true);
check(pattern, "foo\n", true);
check(pattern, "foo\r", true);
check(pattern, "foo\r\n", true);
// Negatives
check(pattern, "fooo", false);
check(pattern, "foo\n\r", false);
pattern = Pattern.compile("foo\\Z", Pattern.UNIX_LINES);
// Positives
check(pattern, "foo", true);
check(pattern, "foo\n", true);
// Negatives
check(pattern, "foo\r", false);
check(pattern, "foo\u0085", false);
check(pattern, "foo\u2028", false);
check(pattern, "foo\u2029", false);
report("\\Z");
}
private static void replaceFirstTest() {
Pattern pattern = Pattern.compile("(ab)(c*)");
Matcher matcher = pattern.matcher("abccczzzabcczzzabccc");
if (!matcher.replaceFirst("test").equals("testzzzabcczzzabccc"))
failCount++;
matcher.reset("zzzabccczzzabcczzzabccczzz");
if (!matcher.replaceFirst("test").equals("zzztestzzzabcczzzabccczzz"))
failCount++;
matcher.reset("zzzabccczzzabcczzzabccczzz");
String result = matcher.replaceFirst("$1");
if (!result.equals("zzzabzzzabcczzzabccczzz"))
failCount++;
matcher.reset("zzzabccczzzabcczzzabccczzz");
result = matcher.replaceFirst("$2");
if (!result.equals("zzzccczzzabcczzzabccczzz"))
failCount++;
pattern = Pattern.compile("a*");
matcher = pattern.matcher("aaaaaaaaaa");
if (!matcher.replaceFirst("test").equals("test"))
failCount++;
pattern = Pattern.compile("a+");
matcher = pattern.matcher("zzzaaaaaaaaaa");
if (!matcher.replaceFirst("test").equals("zzztest"))
failCount++;
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("(ab)(c*)"));
matcher = pattern.matcher(toSupplementaries("abccczzzabcczzzabccc"));
if (!matcher.replaceFirst(toSupplementaries("test"))
.equals(toSupplementaries("testzzzabcczzzabccc")))
failCount++;
matcher.reset(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
if (!matcher.replaceFirst(toSupplementaries("test")).
equals(toSupplementaries("zzztestzzzabcczzzabccczzz")))
failCount++;
matcher.reset(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
result = matcher.replaceFirst("$1");
if (!result.equals(toSupplementaries("zzzabzzzabcczzzabccczzz")))
failCount++;
matcher.reset(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
result = matcher.replaceFirst("$2");
if (!result.equals(toSupplementaries("zzzccczzzabcczzzabccczzz")))
failCount++;
pattern = Pattern.compile(toSupplementaries("a*"));
matcher = pattern.matcher(toSupplementaries("aaaaaaaaaa"));
if (!matcher.replaceFirst(toSupplementaries("test")).equals(toSupplementaries("test")))
failCount++;
pattern = Pattern.compile(toSupplementaries("a+"));
matcher = pattern.matcher(toSupplementaries("zzzaaaaaaaaaa"));
if (!matcher.replaceFirst(toSupplementaries("test")).equals(toSupplementaries("zzztest")))
failCount++;
report("Replace First");
}
private static void unixLinesTest() {
Pattern pattern = Pattern.compile(".*");
Matcher matcher = pattern.matcher("aa\u2028blah");
matcher.find();
if (!matcher.group(0).equals("aa"))
failCount++;
pattern = Pattern.compile(".*", Pattern.UNIX_LINES);
matcher = pattern.matcher("aa\u2028blah");
matcher.find();
if (!matcher.group(0).equals("aa\u2028blah"))
failCount++;
pattern = Pattern.compile("[az]$",
Pattern.MULTILINE | Pattern.UNIX_LINES);
matcher = pattern.matcher("aa\u2028zz");
check(matcher, "a\u2028", false);
// Supplementary character test
pattern = Pattern.compile(".*");
matcher = pattern.matcher(toSupplementaries("aa\u2028blah"));
matcher.find();
if (!matcher.group(0).equals(toSupplementaries("aa")))
failCount++;
pattern = Pattern.compile(".*", Pattern.UNIX_LINES);
matcher = pattern.matcher(toSupplementaries("aa\u2028blah"));
matcher.find();
if (!matcher.group(0).equals(toSupplementaries("aa\u2028blah")))
failCount++;
pattern = Pattern.compile(toSupplementaries("[az]$"),
Pattern.MULTILINE | Pattern.UNIX_LINES);
matcher = pattern.matcher(toSupplementaries("aa\u2028zz"));
check(matcher, toSupplementaries("a\u2028"), false);
report("Unix Lines");
}
private static void commentsTest() {
int flags = Pattern.COMMENTS;
Pattern pattern = Pattern.compile("aa \\# aa", flags);
Matcher matcher = pattern.matcher("aa#aa");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah", flags);
matcher = pattern.matcher("aa");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa blah", flags);
matcher = pattern.matcher("aablah");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah blech ", flags);
matcher = pattern.matcher("aa");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah\n ", flags);
matcher = pattern.matcher("aa");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah\nbc # blech", flags);
matcher = pattern.matcher("aabc");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah\nbc# blech", flags);
matcher = pattern.matcher("aabc");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("aa # blah\nbc\\# blech", flags);
matcher = pattern.matcher("aabc#blech");
if (!matcher.matches())
failCount++;
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("aa \\# aa"), flags);
matcher = pattern.matcher(toSupplementaries("aa#aa"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah"), flags);
matcher = pattern.matcher(toSupplementaries("aa"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa blah"), flags);
matcher = pattern.matcher(toSupplementaries("aablah"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah blech "), flags);
matcher = pattern.matcher(toSupplementaries("aa"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah\n "), flags);
matcher = pattern.matcher(toSupplementaries("aa"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah\nbc # blech"), flags);
matcher = pattern.matcher(toSupplementaries("aabc"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah\nbc# blech"), flags);
matcher = pattern.matcher(toSupplementaries("aabc"));
if (!matcher.matches())
failCount++;
pattern = Pattern.compile(toSupplementaries("aa # blah\nbc\\# blech"), flags);
matcher = pattern.matcher(toSupplementaries("aabc#blech"));
if (!matcher.matches())
failCount++;
report("Comments");
}
private static void caseFoldingTest() { // bug 4504687
int flags = Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE;
Pattern pattern = Pattern.compile("aa", flags);
Matcher matcher = pattern.matcher("ab");
if (matcher.matches())
failCount++;
pattern = Pattern.compile("aA", flags);
matcher = pattern.matcher("ab");
if (matcher.matches())
failCount++;
pattern = Pattern.compile("aa", flags);
matcher = pattern.matcher("aB");
if (matcher.matches())
failCount++;
matcher = pattern.matcher("Ab");
if (matcher.matches())
failCount++;
// ASCII "a"
// Latin-1 Supplement "a" + grave
// Cyrillic "a"
String[] patterns = new String[] {
//single
"a", "\u00e0", "\u0430",
//slice
"ab", "\u00e0\u00e1", "\u0430\u0431",
//class single
"[a]", "[\u00e0]", "[\u0430]",
//class range
"[a-b]", "[\u00e0-\u00e5]", "[\u0430-\u0431]",
//back reference
"(a)\\1", "(\u00e0)\\1", "(\u0430)\\1"
};
String[] texts = new String[] {
"A", "\u00c0", "\u0410",
"AB", "\u00c0\u00c1", "\u0410\u0411",
"A", "\u00c0", "\u0410",
"B", "\u00c2", "\u0411",
"aA", "\u00e0\u00c0", "\u0430\u0410"
};
boolean[] expected = new boolean[] {
true, false, false,
true, false, false,
true, false, false,
true, false, false,
true, false, false
};
flags = Pattern.CASE_INSENSITIVE;
for (int i = 0; i < patterns.length; i++) {
pattern = Pattern.compile(patterns[i], flags);
matcher = pattern.matcher(texts[i]);
if (matcher.matches() != expected[i]) {
System.out.println("<1> Failed at " + i);
failCount++;
}
}
flags = Pattern.CASE_INSENSITIVE | Pattern.UNICODE_CASE;
for (int i = 0; i < patterns.length; i++) {
pattern = Pattern.compile(patterns[i], flags);
matcher = pattern.matcher(texts[i]);
if (!matcher.matches()) {
System.out.println("<2> Failed at " + i);
failCount++;
}
}
// flag unicode_case alone should do nothing
flags = Pattern.UNICODE_CASE;
for (int i = 0; i < patterns.length; i++) {
pattern = Pattern.compile(patterns[i], flags);
matcher = pattern.matcher(texts[i]);
if (matcher.matches()) {
System.out.println("<3> Failed at " + i);
failCount++;
}
}
// Special cases: i, I, u+0131 and u+0130
flags = Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE;
pattern = Pattern.compile("[h-j]+", flags);
if (!pattern.matcher("\u0131\u0130").matches())
failCount++;
report("Case Folding");
}
private static void appendTest() {
Pattern pattern = Pattern.compile("(ab)(cd)");
Matcher matcher = pattern.matcher("abcd");
String result = matcher.replaceAll("$2$1");
if (!result.equals("cdab"))
failCount++;
String s1 = "Swap all: first = 123, second = 456";
String s2 = "Swap one: first = 123, second = 456";
String r = "$3$2$1";
pattern = Pattern.compile("([a-z]+)( *= *)([0-9]+)");
matcher = pattern.matcher(s1);
result = matcher.replaceAll(r);
if (!result.equals("Swap all: 123 = first, 456 = second"))
failCount++;
matcher = pattern.matcher(s2);
if (matcher.find()) {
StringBuffer sb = new StringBuffer();
matcher.appendReplacement(sb, r);
matcher.appendTail(sb);
result = sb.toString();
if (!result.equals("Swap one: 123 = first, second = 456"))
failCount++;
}
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("(ab)(cd)"));
matcher = pattern.matcher(toSupplementaries("abcd"));
result = matcher.replaceAll("$2$1");
if (!result.equals(toSupplementaries("cdab")))
failCount++;
s1 = toSupplementaries("Swap all: first = 123, second = 456");
s2 = toSupplementaries("Swap one: first = 123, second = 456");
r = toSupplementaries("$3$2$1");
pattern = Pattern.compile(toSupplementaries("([a-z]+)( *= *)([0-9]+)"));
matcher = pattern.matcher(s1);
result = matcher.replaceAll(r);
if (!result.equals(toSupplementaries("Swap all: 123 = first, 456 = second")))
failCount++;
matcher = pattern.matcher(s2);
if (matcher.find()) {
StringBuffer sb = new StringBuffer();
matcher.appendReplacement(sb, r);
matcher.appendTail(sb);
result = sb.toString();
if (!result.equals(toSupplementaries("Swap one: 123 = first, second = 456")))
failCount++;
}
report("Append");
}
private static void splitTest() {
Pattern pattern = Pattern.compile(":");
String[] result = pattern.split("foo:and:boo", 2);
if (!result[0].equals("foo"))
failCount++;
if (!result[1].equals("and:boo"))
failCount++;
// Supplementary character test
Pattern patternX = Pattern.compile(toSupplementaries("X"));
result = patternX.split(toSupplementaries("fooXandXboo"), 2);
if (!result[0].equals(toSupplementaries("foo")))
failCount++;
if (!result[1].equals(toSupplementaries("andXboo")))
failCount++;
CharBuffer cb = CharBuffer.allocate(100);
cb.put("foo:and:boo");
cb.flip();
result = pattern.split(cb);
if (!result[0].equals("foo"))
failCount++;
if (!result[1].equals("and"))
failCount++;
if (!result[2].equals("boo"))
failCount++;
// Supplementary character test
CharBuffer cbs = CharBuffer.allocate(100);
cbs.put(toSupplementaries("fooXandXboo"));
cbs.flip();
result = patternX.split(cbs);
if (!result[0].equals(toSupplementaries("foo")))
failCount++;
if (!result[1].equals(toSupplementaries("and")))
failCount++;
if (!result[2].equals(toSupplementaries("boo")))
failCount++;
String source = "0123456789";
for (int limit=-2; limit<3; limit++) {
for (int x=0; x<10; x++) {
result = source.split(Integer.toString(x), limit);
int expectedLength = limit < 1 ? 2 : limit;
if ((limit == 0) && (x == 9)) {
// expected dropping of ""
if (result.length != 1)
failCount++;
if (!result[0].equals("012345678")) {
failCount++;
}
} else {
if (result.length != expectedLength) {
failCount++;
}
if (!result[0].equals(source.substring(0,x))) {
if (limit != 1) {
failCount++;
} else {
if (!result[0].equals(source.substring(0,10))) {
failCount++;
}
}
}
if (expectedLength > 1) { // Check segment 2
if (!result[1].equals(source.substring(x+1,10)))
failCount++;
}
}
}
}
// Check the case for no match found
for (int limit=-2; limit<3; limit++) {
result = source.split("e", limit);
if (result.length != 1)
failCount++;
if (!result[0].equals(source))
failCount++;
}
// Check the case for limit == 0, source = "";
source = "";
result = source.split("e", 0);
if (result.length != 1)
failCount++;
if (!result[0].equals(source))
failCount++;
report("Split");
}
private static void negationTest() {
Pattern pattern = Pattern.compile("[\\[@^]+");
Matcher matcher = pattern.matcher("@@@@[[[[^^^^");
if (!matcher.find())
failCount++;
if (!matcher.group(0).equals("@@@@[[[[^^^^"))
failCount++;
pattern = Pattern.compile("[@\\[^]+");
matcher = pattern.matcher("@@@@[[[[^^^^");
if (!matcher.find())
failCount++;
if (!matcher.group(0).equals("@@@@[[[[^^^^"))
failCount++;
pattern = Pattern.compile("[@\\[^@]+");
matcher = pattern.matcher("@@@@[[[[^^^^");
if (!matcher.find())
failCount++;
if (!matcher.group(0).equals("@@@@[[[[^^^^"))
failCount++;
pattern = Pattern.compile("\\)");
matcher = pattern.matcher("xxx)xxx");
if (!matcher.find())
failCount++;
report("Negation");
}
private static void ampersandTest() {
Pattern pattern = Pattern.compile("[&@]+");
check(pattern, "@@@@&&&&", true);
pattern = Pattern.compile("[@&]+");
check(pattern, "@@@@&&&&", true);
pattern = Pattern.compile("[@\\&]+");
check(pattern, "@@@@&&&&", true);
report("Ampersand");
}
private static void octalTest() throws Exception {
Pattern pattern = Pattern.compile("\\u0007");
Matcher matcher = pattern.matcher("\u0007");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\07");
matcher = pattern.matcher("\u0007");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\007");
matcher = pattern.matcher("\u0007");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\0007");
matcher = pattern.matcher("\u0007");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\040");
matcher = pattern.matcher("\u0020");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\0403");
matcher = pattern.matcher("\u00203");
if (!matcher.matches())
failCount++;
pattern = Pattern.compile("\\0103");
matcher = pattern.matcher("\u0043");
if (!matcher.matches())
failCount++;
report("Octal");
}
private static void longPatternTest() throws Exception {
try {
Pattern pattern = Pattern.compile(
"a 32-character-long pattern xxxx");
pattern = Pattern.compile("a 33-character-long pattern xxxxx");
pattern = Pattern.compile("a thirty four character long regex");
StringBuffer patternToBe = new StringBuffer(101);
for (int i=0; i<100; i++)
patternToBe.append((char)(97 + i%26));
pattern = Pattern.compile(patternToBe.toString());
} catch (PatternSyntaxException e) {
failCount++;
}
// Supplementary character test
try {
Pattern pattern = Pattern.compile(
toSupplementaries("a 32-character-long pattern xxxx"));
pattern = Pattern.compile(toSupplementaries("a 33-character-long pattern xxxxx"));
pattern = Pattern.compile(toSupplementaries("a thirty four character long regex"));
StringBuffer patternToBe = new StringBuffer(101*2);
for (int i=0; i<100; i++)
patternToBe.append(Character.toChars(Character.MIN_SUPPLEMENTARY_CODE_POINT
+ 97 + i%26));
pattern = Pattern.compile(patternToBe.toString());
} catch (PatternSyntaxException e) {
failCount++;
}
report("LongPattern");
}
private static void group0Test() throws Exception {
Pattern pattern = Pattern.compile("(tes)ting");
Matcher matcher = pattern.matcher("testing");
check(matcher, "testing");
matcher.reset("testing");
if (matcher.lookingAt()) {
if (!matcher.group(0).equals("testing"))
failCount++;
} else {
failCount++;
}
matcher.reset("testing");
if (matcher.matches()) {
if (!matcher.group(0).equals("testing"))
failCount++;
} else {
failCount++;
}
pattern = Pattern.compile("(tes)ting");
matcher = pattern.matcher("testing");
if (matcher.lookingAt()) {
if (!matcher.group(0).equals("testing"))
failCount++;
} else {
failCount++;
}
pattern = Pattern.compile("^(tes)ting");
matcher = pattern.matcher("testing");
if (matcher.matches()) {
if (!matcher.group(0).equals("testing"))
failCount++;
} else {
failCount++;
}
// Supplementary character test
pattern = Pattern.compile(toSupplementaries("(tes)ting"));
matcher = pattern.matcher(toSupplementaries("testing"));
check(matcher, toSupplementaries("testing"));
matcher.reset(toSupplementaries("testing"));
if (matcher.lookingAt()) {
if (!matcher.group(0).equals(toSupplementaries("testing")))
failCount++;
} else {
failCount++;
}
matcher.reset(toSupplementaries("testing"));
if (matcher.matches()) {
if (!matcher.group(0).equals(toSupplementaries("testing")))
failCount++;
} else {
failCount++;
}
pattern = Pattern.compile(toSupplementaries("(tes)ting"));
matcher = pattern.matcher(toSupplementaries("testing"));
if (matcher.lookingAt()) {
if (!matcher.group(0).equals(toSupplementaries("testing")))
failCount++;
} else {
failCount++;
}
pattern = Pattern.compile(toSupplementaries("^(tes)ting"));
matcher = pattern.matcher(toSupplementaries("testing"));
if (matcher.matches()) {
if (!matcher.group(0).equals(toSupplementaries("testing")))
failCount++;
} else {
failCount++;
}
report("Group0");
}
private static void findIntTest() throws Exception {
Pattern p = Pattern.compile("blah");
Matcher m = p.matcher("zzzzblahzzzzzblah");
boolean result = m.find(2);
if (!result)
failCount++;
p = Pattern.compile("$");
m = p.matcher("1234567890");
result = m.find(10);
if (!result)
failCount++;
try {
result = m.find(11);
failCount++;
} catch (IndexOutOfBoundsException e) {
// correct result
}
// Supplementary character test
p = Pattern.compile(toSupplementaries("blah"));
m = p.matcher(toSupplementaries("zzzzblahzzzzzblah"));
result = m.find(2);
if (!result)
failCount++;
report("FindInt");
}
private static void emptyPatternTest() throws Exception {
Pattern p = Pattern.compile("");
Matcher m = p.matcher("foo");
// Should find empty pattern at beginning of input
boolean result = m.find();
if (result != true)
failCount++;
if (m.start() != 0)
failCount++;
// Should not match entire input if input is not empty
m.reset();
result = m.matches();
if (result == true)
failCount++;
try {
m.start(0);
failCount++;
} catch (IllegalStateException e) {
// Correct result
}
// Should match entire input if input is empty
m.reset("");
result = m.matches();
if (result != true)
failCount++;
result = Pattern.matches("", "");
if (result != true)
failCount++;
result = Pattern.matches("", "foo");
if (result == true)
failCount++;
report("EmptyPattern");
}
private static void charClassTest() throws Exception {
Pattern pattern = Pattern.compile("blah[ab]]blech");
check(pattern, "blahb]blech", true);
pattern = Pattern.compile("[abc[def]]");
check(pattern, "b", true);
// Supplementary character tests
pattern = Pattern.compile(toSupplementaries("blah[ab]]blech"));
check(pattern, toSupplementaries("blahb]blech"), true);
pattern = Pattern.compile(toSupplementaries("[abc[def]]"));
check(pattern, toSupplementaries("b"), true);
try {
// u00ff when UNICODE_CASE
pattern = Pattern.compile("[ab\u00ffcd]",
Pattern.CASE_INSENSITIVE|
Pattern.UNICODE_CASE);
check(pattern, "ab\u00ffcd", true);
check(pattern, "Ab\u0178Cd", true);
// u00b5 when UNICODE_CASE
pattern = Pattern.compile("[ab\u00b5cd]",
Pattern.CASE_INSENSITIVE|
Pattern.UNICODE_CASE);
check(pattern, "ab\u00b5cd", true);
check(pattern, "Ab\u039cCd", true);
} catch (Exception e) { failCount++; }
/* Special cases
(1)LatinSmallLetterLongS u+017f
(2)LatinSmallLetterDotlessI u+0131
(3)LatineCapitalLetterIWithDotAbove u+0130
(4)KelvinSign u+212a
(5)AngstromSign u+212b
*/
int flags = Pattern.UNICODE_CASE | Pattern.CASE_INSENSITIVE;
pattern = Pattern.compile("[sik\u00c5]+", flags);
if (!pattern.matcher("\u017f\u0130\u0131\u212a\u212b").matches())
failCount++;
report("CharClass");
}
private static void caretTest() throws Exception {
Pattern pattern = Pattern.compile("\\w*");
Matcher matcher = pattern.matcher("a#bc#def##g");
check(matcher, "a");
check(matcher, "");
check(matcher, "bc");
check(matcher, "");
check(matcher, "def");
check(matcher, "");
check(matcher, "");
check(matcher, "g");
check(matcher, "");
if (matcher.find())
failCount++;
pattern = Pattern.compile("^\\w*");
matcher = pattern.matcher("a#bc#def##g");
check(matcher, "a");
if (matcher.find())
failCount++;
pattern = Pattern.compile("\\w");
matcher = pattern.matcher("abc##x");
check(matcher, "a");
check(matcher, "b");
check(matcher, "c");
check(matcher, "x");
if (matcher.find())
failCount++;
pattern = Pattern.compile("^\\w");
matcher = pattern.matcher("abc##x");
check(matcher, "a");
if (matcher.find())
failCount++;
pattern = Pattern.compile("\\A\\p{Alpha}{3}");
matcher = pattern.matcher("abcdef-ghi\njklmno");
check(matcher, "abc");
if (matcher.find())
failCount++;
pattern = Pattern.compile("^\\p{Alpha}{3}", Pattern.MULTILINE);
matcher = pattern.matcher("abcdef-ghi\njklmno");
check(matcher, "abc");
check(matcher, "jkl");
if (matcher.find())
failCount++;
pattern = Pattern.compile("^", Pattern.MULTILINE);
matcher = pattern.matcher("this is some text");
String result = matcher.replaceAll("X");
if (!result.equals("Xthis is some text"))
failCount++;
pattern = Pattern.compile("^");
matcher = pattern.matcher("this is some text");
result = matcher.replaceAll("X");
if (!result.equals("Xthis is some text"))
failCount++;
pattern = Pattern.compile("^", Pattern.MULTILINE | Pattern.UNIX_LINES);
matcher = pattern.matcher("this is some text\n");
result = matcher.replaceAll("X");
if (!result.equals("Xthis is some text\n"))
failCount++;
report("Caret");
}
private static void groupCaptureTest() throws Exception {
// Independent group
Pattern pattern = Pattern.compile("x+(?>y+)z+");
Matcher matcher = pattern.matcher("xxxyyyzzz");
matcher.find();
try {
String blah = matcher.group(1);
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Good result
}
// Pure group
pattern = Pattern.compile("x+(?:y+)z+");
matcher = pattern.matcher("xxxyyyzzz");
matcher.find();
try {
String blah = matcher.group(1);
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Good result
}
// Supplementary character tests
// Independent group
pattern = Pattern.compile(toSupplementaries("x+(?>y+)z+"));
matcher = pattern.matcher(toSupplementaries("xxxyyyzzz"));
matcher.find();
try {
String blah = matcher.group(1);
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Good result
}
// Pure group
pattern = Pattern.compile(toSupplementaries("x+(?:y+)z+"));
matcher = pattern.matcher(toSupplementaries("xxxyyyzzz"));
matcher.find();
try {
String blah = matcher.group(1);
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Good result
}
report("GroupCapture");
}
private static void backRefTest() throws Exception {
Pattern pattern = Pattern.compile("(a*)bc\\1");
check(pattern, "zzzaabcazzz", true);
pattern = Pattern.compile("(a*)bc\\1");
check(pattern, "zzzaabcaazzz", true);
pattern = Pattern.compile("(abc)(def)\\1");
check(pattern, "abcdefabc", true);
pattern = Pattern.compile("(abc)(def)\\3");
check(pattern, "abcdefabc", false);
try {
for (int i = 1; i < 10; i++) {
// Make sure backref 1-9 are always accepted
pattern = Pattern.compile("abcdef\\" + i);
// and fail to match if the target group does not exit
check(pattern, "abcdef", false);
}
} catch(PatternSyntaxException e) {
failCount++;
}
pattern = Pattern.compile("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)\\11");
check(pattern, "abcdefghija", false);
check(pattern, "abcdefghija1", true);
pattern = Pattern.compile("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11");
check(pattern, "abcdefghijkk", true);
pattern = Pattern.compile("(a)bcdefghij\\11");
check(pattern, "abcdefghija1", true);
// Supplementary character tests
pattern = Pattern.compile(toSupplementaries("(a*)bc\\1"));
check(pattern, toSupplementaries("zzzaabcazzz"), true);
pattern = Pattern.compile(toSupplementaries("(a*)bc\\1"));
check(pattern, toSupplementaries("zzzaabcaazzz"), true);
pattern = Pattern.compile(toSupplementaries("(abc)(def)\\1"));
check(pattern, toSupplementaries("abcdefabc"), true);
pattern = Pattern.compile(toSupplementaries("(abc)(def)\\3"));
check(pattern, toSupplementaries("abcdefabc"), false);
pattern = Pattern.compile(toSupplementaries("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)\\11"));
check(pattern, toSupplementaries("abcdefghija"), false);
check(pattern, toSupplementaries("abcdefghija1"), true);
pattern = Pattern.compile(toSupplementaries("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(k)\\11"));
check(pattern, toSupplementaries("abcdefghijkk"), true);
report("BackRef");
}
/**
* Unicode Technical Report #18, section 2.6 End of Line
* There is no empty line to be matched in the sequence \u000D\u000A
* but there is an empty line in the sequence \u000A\u000D.
*/
private static void anchorTest() throws Exception {
Pattern p = Pattern.compile("^.*$", Pattern.MULTILINE);
Matcher m = p.matcher("blah1\r\nblah2");
m.find();
m.find();
if (!m.group().equals("blah2"))
failCount++;
m.reset("blah1\n\rblah2");
m.find();
m.find();
m.find();
if (!m.group().equals("blah2"))
failCount++;
// Test behavior of $ with \r\n at end of input
p = Pattern.compile(".+$");
m = p.matcher("blah1\r\n");
if (!m.find())
failCount++;
if (!m.group().equals("blah1"))
failCount++;
if (m.find())
failCount++;
// Test behavior of $ with \r\n at end of input in multiline
p = Pattern.compile(".+$", Pattern.MULTILINE);
m = p.matcher("blah1\r\n");
if (!m.find())
failCount++;
if (m.find())
failCount++;
// Test for $ recognition of \u0085 for bug 4527731
p = Pattern.compile(".+$", Pattern.MULTILINE);
m = p.matcher("blah1\u0085");
if (!m.find())
failCount++;
// Supplementary character test
p = Pattern.compile("^.*$", Pattern.MULTILINE);
m = p.matcher(toSupplementaries("blah1\r\nblah2"));
m.find();
m.find();
if (!m.group().equals(toSupplementaries("blah2")))
failCount++;
m.reset(toSupplementaries("blah1\n\rblah2"));
m.find();
m.find();
m.find();
if (!m.group().equals(toSupplementaries("blah2")))
failCount++;
// Test behavior of $ with \r\n at end of input
p = Pattern.compile(".+$");
m = p.matcher(toSupplementaries("blah1\r\n"));
if (!m.find())
failCount++;
if (!m.group().equals(toSupplementaries("blah1")))
failCount++;
if (m.find())
failCount++;
// Test behavior of $ with \r\n at end of input in multiline
p = Pattern.compile(".+$", Pattern.MULTILINE);
m = p.matcher(toSupplementaries("blah1\r\n"));
if (!m.find())
failCount++;
if (m.find())
failCount++;
// Test for $ recognition of \u0085 for bug 4527731
p = Pattern.compile(".+$", Pattern.MULTILINE);
m = p.matcher(toSupplementaries("blah1\u0085"));
if (!m.find())
failCount++;
report("Anchors");
}
/**
* A basic sanity test of Matcher.lookingAt().
*/
private static void lookingAtTest() throws Exception {
Pattern p = Pattern.compile("(ab)(c*)");
Matcher m = p.matcher("abccczzzabcczzzabccc");
if (!m.lookingAt())
failCount++;
if (!m.group().equals(m.group(0)))
failCount++;
m = p.matcher("zzzabccczzzabcczzzabccczzz");
if (m.lookingAt())
failCount++;
// Supplementary character test
p = Pattern.compile(toSupplementaries("(ab)(c*)"));
m = p.matcher(toSupplementaries("abccczzzabcczzzabccc"));
if (!m.lookingAt())
failCount++;
if (!m.group().equals(m.group(0)))
failCount++;
m = p.matcher(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
if (m.lookingAt())
failCount++;
report("Looking At");
}
/**
* A basic sanity test of Matcher.matches().
*/
private static void matchesTest() throws Exception {
// matches()
Pattern p = Pattern.compile("ulb(c*)");
Matcher m = p.matcher("ulbcccccc");
if (!m.matches())
failCount++;
// find() but not matches()
m.reset("zzzulbcccccc");
if (m.matches())
failCount++;
// lookingAt() but not matches()
m.reset("ulbccccccdef");
if (m.matches())
failCount++;
// matches()
p = Pattern.compile("a|ad");
m = p.matcher("ad");
if (!m.matches())
failCount++;
// Supplementary character test
// matches()
p = Pattern.compile(toSupplementaries("ulb(c*)"));
m = p.matcher(toSupplementaries("ulbcccccc"));
if (!m.matches())
failCount++;
// find() but not matches()
m.reset(toSupplementaries("zzzulbcccccc"));
if (m.matches())
failCount++;
// lookingAt() but not matches()
m.reset(toSupplementaries("ulbccccccdef"));
if (m.matches())
failCount++;
// matches()
p = Pattern.compile(toSupplementaries("a|ad"));
m = p.matcher(toSupplementaries("ad"));
if (!m.matches())
failCount++;
report("Matches");
}
/**
* A basic sanity test of Pattern.matches().
*/
private static void patternMatchesTest() throws Exception {
// matches()
if (!Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("ulbcccccc")))
failCount++;
// find() but not matches()
if (Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("zzzulbcccccc")))
failCount++;
// lookingAt() but not matches()
if (Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("ulbccccccdef")))
failCount++;
// Supplementary character test
// matches()
if (!Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("ulbcccccc")))
failCount++;
// find() but not matches()
if (Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("zzzulbcccccc")))
failCount++;
// lookingAt() but not matches()
if (Pattern.matches(toSupplementaries("ulb(c*)"),
toSupplementaries("ulbccccccdef")))
failCount++;
report("Pattern Matches");
}
/**
* Canonical equivalence testing. Tests the ability of the engine
* to match sequences that are not explicitly specified in the
* pattern when they are considered equivalent by the Unicode Standard.
*/
private static void ceTest() throws Exception {
// Decomposed char outside char classes
Pattern p = Pattern.compile("testa\u030a", Pattern.CANON_EQ);
Matcher m = p.matcher("test\u00e5");
if (!m.matches())
failCount++;
m.reset("testa\u030a");
if (!m.matches())
failCount++;
// Composed char outside char classes
p = Pattern.compile("test\u00e5", Pattern.CANON_EQ);
m = p.matcher("test\u00e5");
if (!m.matches())
failCount++;
m.reset("testa\u030a");
if (!m.find())
failCount++;
// Decomposed char inside a char class
p = Pattern.compile("test[abca\u030a]", Pattern.CANON_EQ);
m = p.matcher("test\u00e5");
if (!m.find())
failCount++;
m.reset("testa\u030a");
if (!m.find())
failCount++;
// Composed char inside a char class
p = Pattern.compile("test[abc\u00e5def\u00e0]", Pattern.CANON_EQ);
m = p.matcher("test\u00e5");
if (!m.find())
failCount++;
m.reset("testa\u0300");
if (!m.find())
failCount++;
m.reset("testa\u030a");
if (!m.find())
failCount++;
// Marks that cannot legally change order and be equivalent
p = Pattern.compile("testa\u0308\u0300", Pattern.CANON_EQ);
check(p, "testa\u0308\u0300", true);
check(p, "testa\u0300\u0308", false);
// Marks that can legally change order and be equivalent
p = Pattern.compile("testa\u0308\u0323", Pattern.CANON_EQ);
check(p, "testa\u0308\u0323", true);
check(p, "testa\u0323\u0308", true);
// Test all equivalences of the sequence a\u0308\u0323\u0300
p = Pattern.compile("testa\u0308\u0323\u0300", Pattern.CANON_EQ);
check(p, "testa\u0308\u0323\u0300", true);
check(p, "testa\u0323\u0308\u0300", true);
check(p, "testa\u0308\u0300\u0323", true);
check(p, "test\u00e4\u0323\u0300", true);
check(p, "test\u00e4\u0300\u0323", true);
/*
* The following canonical equivalence tests don't work. Bug id: 4916384.
*
// Decomposed hangul (jamos)
p = Pattern.compile("\u1100\u1161", Pattern.CANON_EQ);
m = p.matcher("\u1100\u1161");
if (!m.matches())
failCount++;
m.reset("\uac00");
if (!m.matches())
failCount++;
// Composed hangul
p = Pattern.compile("\uac00", Pattern.CANON_EQ);
m = p.matcher("\u1100\u1161");
if (!m.matches())
failCount++;
m.reset("\uac00");
if (!m.matches())
failCount++;
// Decomposed supplementary outside char classes
p = Pattern.compile("test\ud834\uddbc\ud834\udd6f", Pattern.CANON_EQ);
m = p.matcher("test\ud834\uddc0");
if (!m.matches())
failCount++;
m.reset("test\ud834\uddbc\ud834\udd6f");
if (!m.matches())
failCount++;
// Composed supplementary outside char classes
p = Pattern.compile("test\ud834\uddc0", Pattern.CANON_EQ);
m.reset("test\ud834\uddbc\ud834\udd6f");
if (!m.matches())
failCount++;
m = p.matcher("test\ud834\uddc0");
if (!m.matches())
failCount++;
*/
report("Canonical Equivalence");
}
/**
* A basic sanity test of Matcher.replaceAll().
*/
private static void globalSubstitute() throws Exception {
// Global substitution with a literal
Pattern p = Pattern.compile("(ab)(c*)");
Matcher m = p.matcher("abccczzzabcczzzabccc");
if (!m.replaceAll("test").equals("testzzztestzzztest"))
failCount++;
m.reset("zzzabccczzzabcczzzabccczzz");
if (!m.replaceAll("test").equals("zzztestzzztestzzztestzzz"))
failCount++;
// Global substitution with groups
m.reset("zzzabccczzzabcczzzabccczzz");
String result = m.replaceAll("$1");
if (!result.equals("zzzabzzzabzzzabzzz"))
failCount++;
// Supplementary character test
// Global substitution with a literal
p = Pattern.compile(toSupplementaries("(ab)(c*)"));
m = p.matcher(toSupplementaries("abccczzzabcczzzabccc"));
if (!m.replaceAll(toSupplementaries("test")).
equals(toSupplementaries("testzzztestzzztest")))
failCount++;
m.reset(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
if (!m.replaceAll(toSupplementaries("test")).
equals(toSupplementaries("zzztestzzztestzzztestzzz")))
failCount++;
// Global substitution with groups
m.reset(toSupplementaries("zzzabccczzzabcczzzabccczzz"));
result = m.replaceAll("$1");
if (!result.equals(toSupplementaries("zzzabzzzabzzzabzzz")))
failCount++;
report("Global Substitution");
}
/**
* Tests the usage of Matcher.appendReplacement() with literal
* and group substitutions.
*/
private static void stringbufferSubstitute() throws Exception {
// SB substitution with literal
String blah = "zzzblahzzz";
Pattern p = Pattern.compile("blah");
Matcher m = p.matcher(blah);
StringBuffer result = new StringBuffer();
try {
m.appendReplacement(result, "blech");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "blech");
if (!result.toString().equals("zzzblech"))
failCount++;
m.appendTail(result);
if (!result.toString().equals("zzzblechzzz"))
failCount++;
// SB substitution with groups
blah = "zzzabcdzzz";
p = Pattern.compile("(ab)(cd)*");
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, "$1");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "$1");
if (!result.toString().equals("zzzab"))
failCount++;
m.appendTail(result);
if (!result.toString().equals("zzzabzzz"))
failCount++;
// SB substitution with 3 groups
blah = "zzzabcdcdefzzz";
p = Pattern.compile("(ab)(cd)*(ef)");
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, "$1w$2w$3");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "$1w$2w$3");
if (!result.toString().equals("zzzabwcdwef"))
failCount++;
m.appendTail(result);
if (!result.toString().equals("zzzabwcdwefzzz"))
failCount++;
// SB substitution with groups and three matches
// skipping middle match
blah = "zzzabcdzzzabcddzzzabcdzzz";
p = Pattern.compile("(ab)(cd*)");
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, "$1");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "$1");
if (!result.toString().equals("zzzab"))
failCount++;
m.find();
m.find();
m.appendReplacement(result, "$2");
if (!result.toString().equals("zzzabzzzabcddzzzcd"))
failCount++;
m.appendTail(result);
if (!result.toString().equals("zzzabzzzabcddzzzcdzzz"))
failCount++;
// Check to make sure escaped $ is ignored
blah = "zzzabcdcdefzzz";
p = Pattern.compile("(ab)(cd)*(ef)");
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, "$1w\\$2w$3");
if (!result.toString().equals("zzzabw$2wef"))
failCount++;
m.appendTail(result);
if (!result.toString().equals("zzzabw$2wefzzz"))
failCount++;
// Check to make sure a reference to nonexistent group causes error
blah = "zzzabcdcdefzzz";
p = Pattern.compile("(ab)(cd)*(ef)");
m = p.matcher(blah);
result = new StringBuffer();
m.find();
try {
m.appendReplacement(result, "$1w$5w$3");
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Correct result
}
// Check double digit group references
blah = "zzz123456789101112zzz";
p = Pattern.compile("(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)");
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, "$1w$11w$3");
if (!result.toString().equals("zzz1w11w3"))
failCount++;
// Check to make sure it backs off $15 to $1 if only three groups
blah = "zzzabcdcdefzzz";
p = Pattern.compile("(ab)(cd)*(ef)");
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, "$1w$15w$3");
if (!result.toString().equals("zzzabwab5wef"))
failCount++;
// Supplementary character test
// SB substitution with literal
blah = toSupplementaries("zzzblahzzz");
p = Pattern.compile(toSupplementaries("blah"));
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, toSupplementaries("blech"));
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, toSupplementaries("blech"));
if (!result.toString().equals(toSupplementaries("zzzblech")))
failCount++;
m.appendTail(result);
if (!result.toString().equals(toSupplementaries("zzzblechzzz")))
failCount++;
// SB substitution with groups
blah = toSupplementaries("zzzabcdzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd)*"));
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, "$1");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "$1");
if (!result.toString().equals(toSupplementaries("zzzab")))
failCount++;
m.appendTail(result);
if (!result.toString().equals(toSupplementaries("zzzabzzz")))
failCount++;
// SB substitution with 3 groups
blah = toSupplementaries("zzzabcdcdefzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd)*(ef)"));
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, toSupplementaries("$1w$2w$3"));
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, toSupplementaries("$1w$2w$3"));
if (!result.toString().equals(toSupplementaries("zzzabwcdwef")))
failCount++;
m.appendTail(result);
if (!result.toString().equals(toSupplementaries("zzzabwcdwefzzz")))
failCount++;
// SB substitution with groups and three matches
// skipping middle match
blah = toSupplementaries("zzzabcdzzzabcddzzzabcdzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd*)"));
m = p.matcher(blah);
result = new StringBuffer();
try {
m.appendReplacement(result, "$1");
failCount++;
} catch (IllegalStateException e) {
}
m.find();
m.appendReplacement(result, "$1");
if (!result.toString().equals(toSupplementaries("zzzab")))
failCount++;
m.find();
m.find();
m.appendReplacement(result, "$2");
if (!result.toString().equals(toSupplementaries("zzzabzzzabcddzzzcd")))
failCount++;
m.appendTail(result);
if (!result.toString().equals(toSupplementaries("zzzabzzzabcddzzzcdzzz")))
failCount++;
// Check to make sure escaped $ is ignored
blah = toSupplementaries("zzzabcdcdefzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd)*(ef)"));
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, toSupplementaries("$1w\\$2w$3"));
if (!result.toString().equals(toSupplementaries("zzzabw$2wef")))
failCount++;
m.appendTail(result);
if (!result.toString().equals(toSupplementaries("zzzabw$2wefzzz")))
failCount++;
// Check to make sure a reference to nonexistent group causes error
blah = toSupplementaries("zzzabcdcdefzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd)*(ef)"));
m = p.matcher(blah);
result = new StringBuffer();
m.find();
try {
m.appendReplacement(result, toSupplementaries("$1w$5w$3"));
failCount++;
} catch (IndexOutOfBoundsException ioobe) {
// Correct result
}
// Check double digit group references
blah = toSupplementaries("zzz123456789101112zzz");
p = Pattern.compile("(1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)");
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, toSupplementaries("$1w$11w$3"));
if (!result.toString().equals(toSupplementaries("zzz1w11w3")))
failCount++;
// Check to make sure it backs off $15 to $1 if only three groups
blah = toSupplementaries("zzzabcdcdefzzz");
p = Pattern.compile(toSupplementaries("(ab)(cd)*(ef)"));
m = p.matcher(blah);
result = new StringBuffer();
m.find();
m.appendReplacement(result, toSupplementaries("$1w$15w$3"));
if (!result.toString().equals(toSupplementaries("zzzabwab5wef")))
failCount++;
// Check nothing has been appended into the output buffer if
// the replacement string triggers IllegalArgumentException.
p = Pattern.compile("(abc)");
m = p.matcher("abcd");
result = new StringBuffer();
m.find();
try {
m.appendReplacement(result, ("xyz$g"));
failCount++;
} catch (IllegalArgumentException iae) {
if (result.length() != 0)
failCount++;
}
report("SB Substitution");
}
/*
* 5 groups of characters are created to make a substitution string.
* A base string will be created including random lead chars, the
* substitution string, and random trailing chars.
* A pattern containing the 5 groups is searched for and replaced with:
* random group + random string + random group.
* The results are checked for correctness.
*/
private static void substitutionBasher() {
for (int runs = 0; runs<1000; runs++) {
// Create a base string to work in
int leadingChars = generator.nextInt(10);
StringBuffer baseBuffer = new StringBuffer(100);
String leadingString = getRandomAlphaString(leadingChars);
baseBuffer.append(leadingString);
// Create 5 groups of random number of random chars
// Create the string to substitute
// Create the pattern string to search for
StringBuffer bufferToSub = new StringBuffer(25);
StringBuffer bufferToPat = new StringBuffer(50);
String[] groups = new String[5];
for(int i=0; i<5; i++) {
int aGroupSize = generator.nextInt(5)+1;
groups[i] = getRandomAlphaString(aGroupSize);
bufferToSub.append(groups[i]);
bufferToPat.append('(');
bufferToPat.append(groups[i]);
bufferToPat.append(')');
}
String stringToSub = bufferToSub.toString();
String pattern = bufferToPat.toString();
// Place sub string into working string at random index
baseBuffer.append(stringToSub);
// Append random chars to end
int trailingChars = generator.nextInt(10);
String trailingString = getRandomAlphaString(trailingChars);
baseBuffer.append(trailingString);
String baseString = baseBuffer.toString();
// Create test pattern and matcher
Pattern p = Pattern.compile(pattern);
Matcher m = p.matcher(baseString);
// Reject candidate if pattern happens to start early
m.find();
if (m.start() < leadingChars)
continue;
// Reject candidate if more than one match
if (m.find())
continue;
// Construct a replacement string with :
// random group + random string + random group
StringBuffer bufferToRep = new StringBuffer();
int groupIndex1 = generator.nextInt(5);
bufferToRep.append("$" + (groupIndex1 + 1));
String randomMidString = getRandomAlphaString(5);
bufferToRep.append(randomMidString);
int groupIndex2 = generator.nextInt(5);
bufferToRep.append("$" + (groupIndex2 + 1));
String replacement = bufferToRep.toString();
// Do the replacement
String result = m.replaceAll(replacement);
// Construct expected result
StringBuffer bufferToRes = new StringBuffer();
bufferToRes.append(leadingString);
bufferToRes.append(groups[groupIndex1]);
bufferToRes.append(randomMidString);
bufferToRes.append(groups[groupIndex2]);
bufferToRes.append(trailingString);
String expectedResult = bufferToRes.toString();
// Check results
if (!result.equals(expectedResult))
failCount++;
}
report("Substitution Basher");
}
/**
* Checks the handling of some escape sequences that the Pattern
* class should process instead of the java compiler. These are
* not in the file because the escapes should be be processed
* by the Pattern class when the regex is compiled.
*/
private static void escapes() throws Exception {
Pattern p = Pattern.compile("\\043");
Matcher m = p.matcher("#");
if (!m.find())
failCount++;
p = Pattern.compile("\\x23");
m = p.matcher("#");
if (!m.find())
failCount++;
p = Pattern.compile("\\u0023");
m = p.matcher("#");
if (!m.find())
failCount++;
report("Escape sequences");
}
/**
* Checks the handling of blank input situations. These
* tests are incompatible with my test file format.
*/
private static void blankInput() throws Exception {
Pattern p = Pattern.compile("abc", Pattern.CASE_INSENSITIVE);
Matcher m = p.matcher("");
if (m.find())
failCount++;
p = Pattern.compile("a*", Pattern.CASE_INSENSITIVE);
m = p.matcher("");
if (!m.find())
failCount++;
p = Pattern.compile("abc");
m = p.matcher("");
if (m.find())
failCount++;
p = Pattern.compile("a*");
m = p.matcher("");
if (!m.find())
failCount++;
report("Blank input");
}
/**
* Tests the Boyer-Moore pattern matching of a character sequence
* on randomly generated patterns.
*/
private static void bm() throws Exception {
doBnM('a');
report("Boyer Moore (ASCII)");
doBnM(Character.MIN_SUPPLEMENTARY_CODE_POINT - 10);
report("Boyer Moore (Supplementary)");
}
private static void doBnM(int baseCharacter) throws Exception {
int achar=0;
for (int i=0; i<100; i++) {
// Create a short pattern to search for
int patternLength = generator.nextInt(7) + 4;
StringBuffer patternBuffer = new StringBuffer(patternLength);
for (int x=0; x<patternLength; x++) {
int ch = baseCharacter + generator.nextInt(26);
if (Character.isSupplementaryCodePoint(ch)) {
patternBuffer.append(Character.toChars(ch));
} else {
patternBuffer.append((char)ch);
}
}
String pattern = patternBuffer.toString();
Pattern p = Pattern.compile(pattern);
// Create a buffer with random ASCII chars that does
// not match the sample
String toSearch = null;
StringBuffer s = null;
Matcher m = p.matcher("");
do {
s = new StringBuffer(100);
for (int x=0; x<100; x++) {
int ch = baseCharacter + generator.nextInt(26);
if (Character.isSupplementaryCodePoint(ch)) {
s.append(Character.toChars(ch));
} else {
s.append((char)ch);
}
}
toSearch = s.toString();
m.reset(toSearch);
} while (m.find());
// Insert the pattern at a random spot
int insertIndex = generator.nextInt(99);
if (Character.isLowSurrogate(s.charAt(insertIndex)))
insertIndex++;
s = s.insert(insertIndex, pattern);
toSearch = s.toString();
// Make sure that the pattern is found
m.reset(toSearch);
if (!m.find())
failCount++;
// Make sure that the match text is the pattern
if (!m.group().equals(pattern))
failCount++;
// Make sure match occured at insertion point
if (m.start() != insertIndex)
failCount++;
}
}
/**
* Tests the matching of slices on randomly generated patterns.
* The Boyer-Moore optimization is not done on these patterns
* because it uses unicode case folding.
*/
private static void slice() throws Exception {
doSlice(Character.MAX_VALUE);
report("Slice");
doSlice(Character.MAX_CODE_POINT);
report("Slice (Supplementary)");
}
private static void doSlice(int maxCharacter) throws Exception {
Random generator = new Random();
int achar=0;
for (int i=0; i<100; i++) {
// Create a short pattern to search for
int patternLength = generator.nextInt(7) + 4;
StringBuffer patternBuffer = new StringBuffer(patternLength);
for (int x=0; x<patternLength; x++) {
int randomChar = 0;
while (!Character.isLetterOrDigit(randomChar))
randomChar = generator.nextInt(maxCharacter);
if (Character.isSupplementaryCodePoint(randomChar)) {
patternBuffer.append(Character.toChars(randomChar));
} else {
patternBuffer.append((char) randomChar);
}
}
String pattern = patternBuffer.toString();
Pattern p = Pattern.compile(pattern, Pattern.UNICODE_CASE);
// Create a buffer with random chars that does not match the sample
String toSearch = null;
StringBuffer s = null;
Matcher m = p.matcher("");
do {
s = new StringBuffer(100);
for (int x=0; x<100; x++) {
int randomChar = 0;
while (!Character.isLetterOrDigit(randomChar))
randomChar = generator.nextInt(maxCharacter);
if (Character.isSupplementaryCodePoint(randomChar)) {
s.append(Character.toChars(randomChar));
} else {
s.append((char) randomChar);
}
}
toSearch = s.toString();
m.reset(toSearch);
} while (m.find());
// Insert the pattern at a random spot
int insertIndex = generator.nextInt(99);
if (Character.isLowSurrogate(s.charAt(insertIndex)))
insertIndex++;
s = s.insert(insertIndex, pattern);
toSearch = s.toString();
// Make sure that the pattern is found
m.reset(toSearch);
if (!m.find())
failCount++;
// Make sure that the match text is the pattern
if (!m.group().equals(pattern))
failCount++;
// Make sure match occured at insertion point
if (m.start() != insertIndex)
failCount++;
}
}
private static void explainFailure(String pattern, String data,
String expected, String actual) {
System.err.println("----------------------------------------");
System.err.println("Pattern = "+pattern);
System.err.println("Data = "+data);
System.err.println("Expected = " + expected);
System.err.println("Actual = " + actual);
}
private static void explainFailure(String pattern, String data,
Throwable t) {
System.err.println("----------------------------------------");
System.err.println("Pattern = "+pattern);
System.err.println("Data = "+data);
t.printStackTrace(System.err);
}
// Testing examples from a file
/**
* Goes through the file "TestCases.txt" and creates many patterns
* described in the file, matching the patterns against input lines in
* the file, and comparing the results against the correct results
* also found in the file. The file format is described in comments
* at the head of the file.
*/
private static void processFile(String fileName) throws Exception {
File testCases = new File(System.getProperty("test.src", "."),
fileName);
FileInputStream in = new FileInputStream(testCases);
BufferedReader r = new BufferedReader(new InputStreamReader(in));
// Process next test case.
String aLine;
while((aLine = r.readLine()) != null) {
// Read a line for pattern
String patternString = grabLine(r);
Pattern p = null;
try {
p = compileTestPattern(patternString);
} catch (PatternSyntaxException e) {
String dataString = grabLine(r);
String expectedResult = grabLine(r);
if (expectedResult.startsWith("error"))
continue;
explainFailure(patternString, dataString, e);
failCount++;
continue;
}
// Read a line for input string
String dataString = grabLine(r);
Matcher m = p.matcher(dataString);
StringBuffer result = new StringBuffer();
// Check for IllegalStateExceptions before a match
failCount += preMatchInvariants(m);
boolean found = m.find();
if (found)
failCount += postTrueMatchInvariants(m);
else
failCount += postFalseMatchInvariants(m);
if (found) {
result.append("true ");
result.append(m.group(0) + " ");
} else {
result.append("false ");
}
result.append(m.groupCount());
if (found) {
for (int i=1; i<m.groupCount()+1; i++)
if (m.group(i) != null)
result.append(" " +m.group(i));
}
// Read a line for the expected result
String expectedResult = grabLine(r);
if (!result.toString().equals(expectedResult)) {
explainFailure(patternString, dataString, expectedResult, result.toString());
failCount++;
}
}
report(fileName);
}
private static int preMatchInvariants(Matcher m) {
int failCount = 0;
try {
m.start();
failCount++;
} catch (IllegalStateException ise) {}
try {
m.end();
failCount++;
} catch (IllegalStateException ise) {}
try {
m.group();
failCount++;
} catch (IllegalStateException ise) {}
return failCount;
}
private static int postFalseMatchInvariants(Matcher m) {
int failCount = 0;
try {
m.group();
failCount++;
} catch (IllegalStateException ise) {}
try {
m.start();
failCount++;
} catch (IllegalStateException ise) {}
try {
m.end();
failCount++;
} catch (IllegalStateException ise) {}
return failCount;
}
private static int postTrueMatchInvariants(Matcher m) {
int failCount = 0;
//assert(m.start() = m.start(0);
if (m.start() != m.start(0))
failCount++;
//assert(m.end() = m.end(0);
if (m.start() != m.start(0))
failCount++;
//assert(m.group() = m.group(0);
if (!m.group().equals(m.group(0)))
failCount++;
try {
m.group(50);
failCount++;
} catch (IndexOutOfBoundsException ise) {}
return failCount;
}
private static Pattern compileTestPattern(String patternString) {
if (!patternString.startsWith("'")) {
return Pattern.compile(patternString);
}
int break1 = patternString.lastIndexOf("'");
String flagString = patternString.substring(
break1+1, patternString.length());
patternString = patternString.substring(1, break1);
if (flagString.equals("i"))
return Pattern.compile(patternString, Pattern.CASE_INSENSITIVE);
if (flagString.equals("m"))
return Pattern.compile(patternString, Pattern.MULTILINE);
return Pattern.compile(patternString);
}
/**
* Reads a line from the input file. Keeps reading lines until a non
* empty non comment line is read. If the line contains a \n then
* these two characters are replaced by a newline char. If a \\uxxxx
* sequence is read then the sequence is replaced by the unicode char.
*/
private static String grabLine(BufferedReader r) throws Exception {
int index = 0;
String line = r.readLine();
while (line.startsWith("//") || line.length() < 1)
line = r.readLine();
while ((index = line.indexOf("\\n")) != -1) {
StringBuffer temp = new StringBuffer(line);
temp.replace(index, index+2, "\n");
line = temp.toString();
}
while ((index = line.indexOf("\\u")) != -1) {
StringBuffer temp = new StringBuffer(line);
String value = temp.substring(index+2, index+6);
char aChar = (char)Integer.parseInt(value, 16);
String unicodeChar = "" + aChar;
temp.replace(index, index+6, unicodeChar);
line = temp.toString();
}
return line;
}
private static void check(Pattern p, String s, String g, String expected) {
Matcher m = p.matcher(s);
m.find();
if (!m.group(g).equals(expected))
failCount++;
}
private static void checkReplaceFirst(String p, String s, String r, String expected)
{
if (!expected.equals(Pattern.compile(p)
.matcher(s)
.replaceFirst(r)))
failCount++;
}
private static void checkReplaceAll(String p, String s, String r, String expected)
{
if (!expected.equals(Pattern.compile(p)
.matcher(s)
.replaceAll(r)))
failCount++;
}
private static void checkExpectedFail(String p) {
try {
Pattern.compile(p);
} catch (PatternSyntaxException pse) {
//pse.printStackTrace();
return;
}
failCount++;
}
private static void checkExpectedFail(Matcher m, String g) {
m.find();
try {
m.group(g);
} catch (IllegalArgumentException iae) {
//iae.printStackTrace();
return;
} catch (NullPointerException npe) {
return;
}
failCount++;
}
private static void namedGroupCaptureTest() throws Exception {
check(Pattern.compile("x+(?<gname>y+)z+"),
"xxxyyyzzz",
"gname",
"yyy");
check(Pattern.compile("x+(?<gname8>y+)z+"),
"xxxyyyzzz",
"gname8",
"yyy");
//backref
Pattern pattern = Pattern.compile("(a*)bc\\1");
check(pattern, "zzzaabcazzz", true); // found "abca"
check(Pattern.compile("(?<gname>a*)bc\\k<gname>"),
"zzzaabcaazzz", true);
check(Pattern.compile("(?<gname>abc)(def)\\k<gname>"),
"abcdefabc", true);
check(Pattern.compile("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)(?<gname>k)\\k<gname>"),
"abcdefghijkk", true);
// Supplementary character tests
check(Pattern.compile("(?<gname>" + toSupplementaries("a*)bc") + "\\k<gname>"),
toSupplementaries("zzzaabcazzz"), true);
check(Pattern.compile("(?<gname>" + toSupplementaries("a*)bc") + "\\k<gname>"),
toSupplementaries("zzzaabcaazzz"), true);
check(Pattern.compile("(?<gname>" + toSupplementaries("abc)(def)") + "\\k<gname>"),
toSupplementaries("abcdefabc"), true);
check(Pattern.compile(toSupplementaries("(a)(b)(c)(d)(e)(f)(g)(h)(i)(j)") +
"(?<gname>" +
toSupplementaries("k)") + "\\k<gname>"),
toSupplementaries("abcdefghijkk"), true);
check(Pattern.compile("x+(?<gname>y+)z+\\k<gname>"),
"xxxyyyzzzyyy",
"gname",
"yyy");
//replaceFirst/All
checkReplaceFirst("(?<gn>ab)(c*)",
"abccczzzabcczzzabccc",
"${gn}",
"abzzzabcczzzabccc");
checkReplaceAll("(?<gn>ab)(c*)",
"abccczzzabcczzzabccc",
"${gn}",
"abzzzabzzzab");
checkReplaceFirst("(?<gn>ab)(c*)",
"zzzabccczzzabcczzzabccczzz",
"${gn}",
"zzzabzzzabcczzzabccczzz");
checkReplaceAll("(?<gn>ab)(c*)",
"zzzabccczzzabcczzzabccczzz",
"${gn}",
"zzzabzzzabzzzabzzz");
checkReplaceFirst("(?<gn1>ab)(?<gn2>c*)",
"zzzabccczzzabcczzzabccczzz",
"${gn2}",
"zzzccczzzabcczzzabccczzz");
checkReplaceAll("(?<gn1>ab)(?<gn2>c*)",
"zzzabccczzzabcczzzabccczzz",
"${gn2}",
"zzzccczzzcczzzccczzz");
//toSupplementaries("(ab)(c*)"));
checkReplaceFirst("(?<gn1>" + toSupplementaries("ab") +
")(?<gn2>" + toSupplementaries("c") + "*)",
toSupplementaries("abccczzzabcczzzabccc"),
"${gn1}",
toSupplementaries("abzzzabcczzzabccc"));
checkReplaceAll("(?<gn1>" + toSupplementaries("ab") +
")(?<gn2>" + toSupplementaries("c") + "*)",
toSupplementaries("abccczzzabcczzzabccc"),
"${gn1}",
toSupplementaries("abzzzabzzzab"));
checkReplaceFirst("(?<gn1>" + toSupplementaries("ab") +
")(?<gn2>" + toSupplementaries("c") + "*)",
toSupplementaries("abccczzzabcczzzabccc"),
"${gn2}",
toSupplementaries("ccczzzabcczzzabccc"));
checkReplaceAll("(?<gn1>" + toSupplementaries("ab") +
")(?<gn2>" + toSupplementaries("c") + "*)",
toSupplementaries("abccczzzabcczzzabccc"),
"${gn2}",
toSupplementaries("ccczzzcczzzccc"));
checkReplaceFirst("(?<dog>Dog)AndCat",
"zzzDogAndCatzzzDogAndCatzzz",
"${dog}",
"zzzDogzzzDogAndCatzzz");
checkReplaceAll("(?<dog>Dog)AndCat",
"zzzDogAndCatzzzDogAndCatzzz",
"${dog}",
"zzzDogzzzDogzzz");
// backref in Matcher & String
if (!"abcdefghij".replaceFirst("cd(?<gn>ef)gh", "${gn}").equals("abefij") ||
!"abbbcbdbefgh".replaceAll("(?<gn>[a-e])b", "${gn}").equals("abcdefgh"))
failCount++;
// negative
checkExpectedFail("(?<groupnamehasnoascii.in>abc)(def)");
checkExpectedFail("(?<groupnamehasnoascii_in>abc)(def)");
checkExpectedFail("(?<6groupnamestartswithdigit>abc)(def)");
checkExpectedFail("(?<gname>abc)(def)\\k<gnameX>");
checkExpectedFail("(?<gname>abc)(?<gname>def)\\k<gnameX>");
checkExpectedFail(Pattern.compile("(?<gname>abc)(def)").matcher("abcdef"),
"gnameX");
checkExpectedFail(Pattern.compile("(?<gname>abc)(def)").matcher("abcdef"),
null);
report("NamedGroupCapture");
}
}