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1
7
8 package java.util.regex;
9
10 import java.security.AccessController  ;
11 import java.security.PrivilegedAction ;
12 import java.text.CharacterIterator ;
13 import sun.text.Normalizer;
14 import java.util.ArrayList ;
15 import java.util.HashMap ;
16
17
18
594
595 public final class Pattern
596 implements java.io.Serializable
597 {
598
599
611
612
621 public static final int UNIX_LINES = 0x01;
622
623
636 public static final int CASE_INSENSITIVE = 0x02;
637
638
647 public static final int COMMENTS = 0x04;
648
649
660 public static final int MULTILINE = 0x08;
661
662
676 public static final int LITERAL = 0x10;
677
678
689 public static final int DOTALL = 0x20;
690
691
705 public static final int UNICODE_CASE = 0x40;
706
707
721 public static final int CANON_EQ = 0x80;
722
723
727
728
729 private static final long serialVersionUID = 5073258162644648461L;
730
731
736 private String pattern;
737
738
743 private int flags;
744
745
749 private transient volatile boolean compiled = false;
750
751
754 private transient String normalizedPattern;
755
756
760 transient Node root;
761
762
767 transient Node matchRoot;
768
769
772 transient int[] buffer;
773
774
777 transient GroupHead[] groupNodes;
778
779
782 private transient int[] temp;
783
784
788 transient int capturingGroupCount;
789
790
794 transient int localCount;
795
796
800 private transient int cursor;
801
802
805 private transient int patternLength;
806
807
816 public static Pattern compile(String regex) {
817 return new Pattern (regex, 0);
818 }
819
820
839 public static Pattern compile(String regex, int flags) {
840 return new Pattern (regex, flags);
841 }
842
843
849 public String pattern() {
850 return pattern;
851 }
852
853
861 public String toString() {
862 return pattern;
863 }
864
865
874 public Matcher matcher(CharSequence input) {
875 synchronized(this) {
876 if (!compiled)
877 compile();
878 }
879 Matcher m = new Matcher (this, input);
880 return m;
881 }
882
883
888 public int flags() {
889 return flags;
890 }
891
892
918 public static boolean matches(String regex, CharSequence input) {
919 Pattern p = Pattern.compile(regex);
920 Matcher m = p.matcher(input);
921 return m.matches();
922 }
923
924
984 public String [] split(CharSequence input, int limit) {
985 int index = 0;
986 boolean matchLimited = limit > 0;
987 ArrayList matchList = new ArrayList ();
988 Matcher m = matcher(input);
989
990 while(m.find()) {
992 if (!matchLimited || matchList.size() < limit - 1) {
993 String match = input.subSequence(index, m.start()).toString();
994 matchList.add(match);
995 index = m.end();
996 } else if (matchList.size() == limit - 1) { String match = input.subSequence(index,
998 input.length()).toString();
999 matchList.add(match);
1000 index = m.end();
1001 }
1002 }
1003
1004 if (index == 0)
1006 return new String [] {input.toString()};
1007
1008 if (!matchLimited || matchList.size() < limit)
1010 matchList.add(input.subSequence(index, input.length()).toString());
1011
1012 int resultSize = matchList.size();
1014 &n
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Java API By Example, From Geeks To Geeks.