javaprims.h: Updated.
* gcj/javaprims.h: Updated. * java/lang/String.java (String(StringBuilder)): New constructor. * java/lang/natStringBuilder.cc: New file. * java/lang/StringBuilder.java: New file. * Makefile.in: Rebuilt. * Makefile.am (core_java_source_files): Added StringBuilder.java. (nat_source_files): Added natStringBuilder.cc. From-SVN: r99535
This commit is contained in:
Tom Tromey
Tom Tromey
parent
aeddae499f
commit
0cb757cc06
@ -1,3 +1,13 @@
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2005-05-10 Tom Tromey <tromey@redhat.com>
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* gcj/javaprims.h: Updated.
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* java/lang/String.java (String(StringBuilder)): New constructor.
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* java/lang/natStringBuilder.cc: New file.
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* java/lang/StringBuilder.java: New file.
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* Makefile.in: Rebuilt.
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* Makefile.am (core_java_source_files): Added StringBuilder.java.
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(nat_source_files): Added natStringBuilder.cc.
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2005-05-10 Paolo Bonzini <bonzini@gnu.org>
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PR java/21436
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@ -2931,6 +2931,7 @@ java/lang/StackTraceElement.java \
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java/lang/StrictMath.java \
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java/lang/String.java \
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java/lang/StringBuffer.java \
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java/lang/StringBuilder.java \
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java/lang/StringIndexOutOfBoundsException.java \
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java/lang/System.java \
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java/lang/Thread.java \
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@ -3926,6 +3927,7 @@ java/lang/natObject.cc \
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java/lang/natRuntime.cc \
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java/lang/natString.cc \
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java/lang/natStringBuffer.cc \
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java/lang/natStringBuilder.cc \
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java/lang/natSystem.cc \
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java/lang/natThread.cc \
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java/lang/natVMClassLoader.cc \
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@ -264,8 +264,8 @@ am__libgcj0_convenience_la_SOURCES_DIST = prims.cc jni.cc exception.cc \
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java/lang/natFloat.cc java/lang/natMath.cc \
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java/lang/natObject.cc java/lang/natRuntime.cc \
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java/lang/natString.cc java/lang/natStringBuffer.cc \
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java/lang/natSystem.cc java/lang/natThread.cc \
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java/lang/natVMClassLoader.cc \
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java/lang/natStringBuilder.cc java/lang/natSystem.cc \
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java/lang/natThread.cc java/lang/natVMClassLoader.cc \
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java/lang/natVMSecurityManager.cc java/lang/natVMThrowable.cc \
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java/lang/ref/natReference.cc java/lang/reflect/natArray.cc \
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java/lang/reflect/natConstructor.cc \
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@ -337,6 +337,7 @@ am__libgcj0_convenience_la_SOURCES_DIST = prims.cc jni.cc exception.cc \
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java/lang/StackOverflowError.java \
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java/lang/StackTraceElement.java java/lang/StrictMath.java \
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java/lang/String.java java/lang/StringBuffer.java \
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java/lang/StringBuilder.java \
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java/lang/StringIndexOutOfBoundsException.java \
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java/lang/System.java java/lang/Thread.java \
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java/lang/ThreadDeath.java java/lang/ThreadGroup.java \
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@ -2312,8 +2313,8 @@ am__objects_5 = gnu/classpath/natSystemProperties.lo \
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java/lang/natFloat.lo java/lang/natMath.lo \
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java/lang/natObject.lo java/lang/natRuntime.lo \
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java/lang/natString.lo java/lang/natStringBuffer.lo \
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java/lang/natSystem.lo java/lang/natThread.lo \
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java/lang/natVMClassLoader.lo \
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java/lang/natStringBuilder.lo java/lang/natSystem.lo \
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java/lang/natThread.lo java/lang/natVMClassLoader.lo \
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java/lang/natVMSecurityManager.lo java/lang/natVMThrowable.lo \
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java/lang/ref/natReference.lo java/lang/reflect/natArray.lo \
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java/lang/reflect/natConstructor.lo \
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@ -2381,7 +2382,7 @@ am__objects_8 = java/lang/AbstractMethodError.lo \
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java/lang/SecurityManager.lo java/lang/Short.lo \
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java/lang/StackOverflowError.lo java/lang/StackTraceElement.lo \
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java/lang/StrictMath.lo java/lang/String.lo \
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java/lang/StringBuffer.lo \
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java/lang/StringBuffer.lo java/lang/StringBuilder.lo \
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java/lang/StringIndexOutOfBoundsException.lo \
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java/lang/System.lo java/lang/Thread.lo \
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java/lang/ThreadDeath.lo java/lang/ThreadGroup.lo \
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@ -6735,6 +6736,7 @@ java/lang/StackTraceElement.java \
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java/lang/StrictMath.java \
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java/lang/String.java \
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java/lang/StringBuffer.java \
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java/lang/StringBuilder.java \
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java/lang/StringIndexOutOfBoundsException.java \
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java/lang/System.java \
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java/lang/Thread.java \
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@ -7719,6 +7721,7 @@ java/lang/natObject.cc \
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java/lang/natRuntime.cc \
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java/lang/natString.cc \
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java/lang/natStringBuffer.cc \
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java/lang/natStringBuilder.cc \
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java/lang/natSystem.cc \
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java/lang/natThread.cc \
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java/lang/natVMClassLoader.cc \
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@ -8369,6 +8372,8 @@ java/lang/natString.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/natStringBuffer.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/natStringBuilder.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/natSystem.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/natThread.lo: java/lang/$(am__dirstamp) \
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@ -8676,6 +8681,8 @@ java/lang/String.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/StringBuffer.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/StringBuilder.lo: java/lang/$(am__dirstamp) \
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java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/StringIndexOutOfBoundsException.lo: \
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java/lang/$(am__dirstamp) java/lang/$(DEPDIR)/$(am__dirstamp)
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java/lang/System.lo: java/lang/$(am__dirstamp) \
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@ -17174,6 +17181,8 @@ mostlyclean-compile:
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-rm -f java/lang/String.lo
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-rm -f java/lang/StringBuffer.$(OBJEXT)
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-rm -f java/lang/StringBuffer.lo
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-rm -f java/lang/StringBuilder.$(OBJEXT)
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-rm -f java/lang/StringBuilder.lo
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-rm -f java/lang/StringIndexOutOfBoundsException.$(OBJEXT)
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-rm -f java/lang/StringIndexOutOfBoundsException.lo
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-rm -f java/lang/System.$(OBJEXT)
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@ -17266,6 +17275,8 @@ mostlyclean-compile:
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-rm -f java/lang/natString.lo
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-rm -f java/lang/natStringBuffer.$(OBJEXT)
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-rm -f java/lang/natStringBuffer.lo
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-rm -f java/lang/natStringBuilder.$(OBJEXT)
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-rm -f java/lang/natStringBuilder.lo
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-rm -f java/lang/natSystem.$(OBJEXT)
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-rm -f java/lang/natSystem.lo
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-rm -f java/lang/natThread.$(OBJEXT)
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@ -21174,6 +21185,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/StrictMath.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/String.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/StringBuffer.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/StringBuilder.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/StringIndexOutOfBoundsException.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/System.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/Thread.Plo@am__quote@
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@ -21220,6 +21232,7 @@ distclean-compile:
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natRuntime.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natString.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natStringBuffer.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natStringBuilder.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natSystem.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natThread.Plo@am__quote@
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@AMDEP_TRUE@@am__include@ @am__quote@java/lang/$(DEPDIR)/natVMClassLoader.Plo@am__quote@
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@ -1,7 +1,7 @@
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// javaprims.h - Main external header file for libgcj. -*- c++ -*-
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/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
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/* Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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Free Software Foundation
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This file is part of libgcj.
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@ -78,24 +78,24 @@ extern "Java"
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class IOException;
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class InputStream;
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class InputStreamReader;
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class InterfaceComparator;
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class InterruptedIOException;
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class InvalidClassException;
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class InvalidObjectException;
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class LineNumberInputStream;
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class LineNumberReader;
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class MemberComparator;
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class MyIOException;
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class NotActiveException;
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class NotSerializableException;
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class ObjectInput;
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class ObjectInputStream;
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class ObjectInputStream$GetField;
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class ObjectInputStream$ValidatorAndPriority;
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class ObjectInputValidation;
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class ObjectOutput;
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class ObjectOutputStream;
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class ObjectOutputStream$PutField;
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class ObjectStreamClass;
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class ObjectStreamClass$InterfaceComparator;
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class ObjectStreamClass$MemberComparator;
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class ObjectStreamConstants;
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class ObjectStreamException;
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class ObjectStreamField;
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@ -124,7 +124,6 @@ extern "Java"
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class UTFDataFormatException;
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class UnsupportedEncodingException;
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class VMObjectStreamClass;
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class ValidatorAndPriority;
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class WriteAbortedException;
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class Writer;
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}
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@ -204,6 +203,7 @@ extern "Java"
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class String;
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class String$CaseInsensitiveComparator;
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class StringBuffer;
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class StringBuilder;
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class StringIndexOutOfBoundsException;
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class System;
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class Thread;
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@ -211,6 +211,7 @@ extern "Java"
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class ThreadGroup;
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class ThreadLocal;
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class Throwable;
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class Throwable$StaticData;
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class UnknownError;
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class UnsatisfiedLinkError;
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class UnsupportedClassVersionError;
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@ -256,6 +257,8 @@ extern "Java"
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{
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class AbstractCollection;
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class AbstractList;
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class AbstractList$RandomAccessSubList;
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class AbstractList$SubList;
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class AbstractMap;
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class AbstractMap$BasicMapEntry;
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class AbstractSequentialList;
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@ -342,7 +345,6 @@ extern "Java"
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class PropertyResourceBundle;
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class Random;
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class RandomAccess;
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class RandomAccessSubList;
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class ResourceBundle;
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||||
class ResourceBundle$BundleKey;
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class Set;
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@ -351,7 +353,6 @@ extern "Java"
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class SortedSet;
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class Stack;
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class StringTokenizer;
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class SubList;
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class TimeZone;
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class Timer;
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class Timer$Scheduler;
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@ -376,6 +377,7 @@ extern "Java"
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class JarEntry;
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class JarException;
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class JarFile;
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class JarFile$EntryInputStream;
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class JarFile$JarEnumeration;
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class JarInputStream;
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class JarOutputStream;
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@ -1,5 +1,5 @@
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/* String.java -- immutable character sequences; the object of string literals
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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@ -397,6 +397,18 @@ public final class String implements Serializable, Comparable, CharSequence
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}
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}
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/**
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* Creates a new String using the character sequence represented by
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* the StringBuilder. Subsequent changes to buf do not affect the String.
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*
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* @param buffer StringBuilder to copy
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* @throws NullPointerException if buffer is null
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*/
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public String(StringBuilder buffer)
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{
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this(buffer.value, 0, buffer.count);
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}
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/**
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* Special constructor which can share an array when safe to do so.
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*
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937
libjava/java/lang/StringBuilder.java
Normal file
937
libjava/java/lang/StringBuilder.java
Normal file
@ -0,0 +1,937 @@
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/* StringBuilder.java -- Unsynchronized growable strings
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Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
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Free Software Foundation, Inc.
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|
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This file is part of GNU Classpath.
|
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|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
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||||
package java.lang;
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||||
|
||||
import java.io.Serializable;
|
||||
|
||||
/**
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* <code>StringBuilder</code> represents a changeable <code>String</code>.
|
||||
* It provides the operations required to modify the
|
||||
* <code>StringBuilder</code>, including insert, replace, delete, append,
|
||||
* and reverse. It like <code>StringBuffer</code>, but is not
|
||||
* synchronized. It is ideal for use when it is known that the
|
||||
* object will only be used from a single thread.
|
||||
*
|
||||
* <p><code>StringBuilder</code>s are variable-length in nature, so even if
|
||||
* you initialize them to a certain size, they can still grow larger than
|
||||
* that. <em>Capacity</em> indicates the number of characters the
|
||||
* <code>StringBuilder</code> can have in it before it has to grow (growing
|
||||
* the char array is an expensive operation involving <code>new</code>).
|
||||
*
|
||||
* <p>Incidentally, compilers often implement the String operator "+"
|
||||
* by using a <code>StringBuilder</code> operation:<br>
|
||||
* <code>a + b</code><br>
|
||||
* is the same as<br>
|
||||
* <code>new StringBuilder().append(a).append(b).toString()</code>.
|
||||
*
|
||||
* <p>Classpath's StringBuilder is capable of sharing memory with Strings for
|
||||
* efficiency. This will help when a StringBuilder is converted to a String
|
||||
* and the StringBuilder is not changed after that (quite common when
|
||||
* performing string concatenation).
|
||||
*
|
||||
* @author Paul Fisher
|
||||
* @author John Keiser
|
||||
* @author Tom Tromey
|
||||
* @author Eric Blake (ebb9@email.byu.edu)
|
||||
* @see String
|
||||
* @see StringBuffer
|
||||
*
|
||||
* @since 1.5
|
||||
*/
|
||||
// FIX15: Implement Appendable when co-variant methods are available
|
||||
public final class StringBuilder
|
||||
implements Serializable, CharSequence
|
||||
{
|
||||
// Implementation note: if you change this class, you usually will
|
||||
// want to change StringBuffer as well.
|
||||
|
||||
/**
|
||||
* For compatability with Sun's JDK
|
||||
*/
|
||||
private static final long serialVersionUID = 4383685877147921099L;
|
||||
|
||||
/**
|
||||
* Index of next available character (and thus the size of the current
|
||||
* string contents). Note that this has permissions set this way so that
|
||||
* String can get the value.
|
||||
*
|
||||
* @serial the number of characters in the buffer
|
||||
*/
|
||||
int count;
|
||||
|
||||
/**
|
||||
* The buffer. Note that this has permissions set this way so that String
|
||||
* can get the value.
|
||||
*
|
||||
* @serial the buffer
|
||||
*/
|
||||
char[] value;
|
||||
|
||||
/**
|
||||
* The default capacity of a buffer.
|
||||
*/
|
||||
private static final int DEFAULT_CAPACITY = 16;
|
||||
|
||||
/**
|
||||
* Create a new StringBuilder with default capacity 16.
|
||||
*/
|
||||
public StringBuilder()
|
||||
{
|
||||
this(DEFAULT_CAPACITY);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create an empty <code>StringBuilder</code> with the specified initial
|
||||
* capacity.
|
||||
*
|
||||
* @param capacity the initial capacity
|
||||
* @throws NegativeArraySizeException if capacity is negative
|
||||
*/
|
||||
public StringBuilder(int capacity)
|
||||
{
|
||||
value = new char[capacity];
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a new <code>StringBuilder</code> with the characters in the
|
||||
* specified <code>String</code>. Initial capacity will be the size of the
|
||||
* String plus 16.
|
||||
*
|
||||
* @param str the <code>String</code> to convert
|
||||
* @throws NullPointerException if str is null
|
||||
*/
|
||||
public StringBuilder(String str)
|
||||
{
|
||||
// Unfortunately, because the size is 16 larger, we cannot share.
|
||||
count = str.count;
|
||||
value = new char[count + DEFAULT_CAPACITY];
|
||||
str.getChars(0, count, value, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a new <code>StringBuilder</code> with the characters in the
|
||||
* specified <code>CharSequence</code>. Initial capacity will be the
|
||||
* length of the sequence plus 16; if the sequence reports a length
|
||||
* less than or equal to 0, then the initial capacity will be 16.
|
||||
*
|
||||
* @param seq the initializing <code>CharSequence</code>
|
||||
* @throws NullPointerException if str is null
|
||||
*/
|
||||
public StringBuilder(CharSequence seq)
|
||||
{
|
||||
int len = seq.length();
|
||||
count = len <= 0 ? 0 : len;
|
||||
value = new char[count + DEFAULT_CAPACITY];
|
||||
for (int i = 0; i < len; ++i)
|
||||
value[i] = seq.charAt(i);
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the length of the <code>String</code> this <code>StringBuilder</code>
|
||||
* would create. Not to be confused with the <em>capacity</em> of the
|
||||
* <code>StringBuilder</code>.
|
||||
*
|
||||
* @return the length of this <code>StringBuilder</code>
|
||||
* @see #capacity()
|
||||
* @see #setLength(int)
|
||||
*/
|
||||
public int length()
|
||||
{
|
||||
return count;
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the total number of characters this <code>StringBuilder</code> can
|
||||
* support before it must be grown. Not to be confused with <em>length</em>.
|
||||
*
|
||||
* @return the capacity of this <code>StringBuilder</code>
|
||||
* @see #length()
|
||||
* @see #ensureCapacity(int)
|
||||
*/
|
||||
public int capacity()
|
||||
{
|
||||
return value.length;
|
||||
}
|
||||
|
||||
/**
|
||||
* Increase the capacity of this <code>StringBuilder</code>. This will
|
||||
* ensure that an expensive growing operation will not occur until
|
||||
* <code>minimumCapacity</code> is reached. The buffer is grown to the
|
||||
* larger of <code>minimumCapacity</code> and
|
||||
* <code>capacity() * 2 + 2</code>, if it is not already large enough.
|
||||
*
|
||||
* @param minimumCapacity the new capacity
|
||||
* @see #capacity()
|
||||
*/
|
||||
public void ensureCapacity(int minimumCapacity)
|
||||
{
|
||||
if (minimumCapacity > value.length)
|
||||
{
|
||||
int max = value.length * 2 + 2;
|
||||
minimumCapacity = (minimumCapacity < max ? max : minimumCapacity);
|
||||
char[] nb = new char[minimumCapacity];
|
||||
System.arraycopy(value, 0, nb, 0, count);
|
||||
value = nb;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the length of this StringBuilder. If the new length is greater than
|
||||
* the current length, all the new characters are set to '\0'. If the new
|
||||
* length is less than the current length, the first <code>newLength</code>
|
||||
* characters of the old array will be preserved, and the remaining
|
||||
* characters are truncated.
|
||||
*
|
||||
* @param newLength the new length
|
||||
* @throws IndexOutOfBoundsException if the new length is negative
|
||||
* (while unspecified, this is a StringIndexOutOfBoundsException)
|
||||
* @see #length()
|
||||
*/
|
||||
public void setLength(int newLength)
|
||||
{
|
||||
if (newLength < 0)
|
||||
throw new StringIndexOutOfBoundsException(newLength);
|
||||
|
||||
int valueLength = value.length;
|
||||
|
||||
/* Always call ensureCapacity in order to preserve copy-on-write
|
||||
semantics. */
|
||||
ensureCapacity(newLength);
|
||||
|
||||
if (newLength < valueLength)
|
||||
{
|
||||
/* If the StringBuilder's value just grew, then we know that
|
||||
value is newly allocated and the region between count and
|
||||
newLength is filled with '\0'. */
|
||||
count = newLength;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* The StringBuilder's value doesn't need to grow. However,
|
||||
we should clear out any cruft that may exist. */
|
||||
while (count < newLength)
|
||||
value[count++] = '\0';
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the character at the specified index.
|
||||
*
|
||||
* @param index the index of the character to get, starting at 0
|
||||
* @return the character at the specified index
|
||||
* @throws IndexOutOfBoundsException if index is negative or >= length()
|
||||
* (while unspecified, this is a StringIndexOutOfBoundsException)
|
||||
*/
|
||||
public char charAt(int index)
|
||||
{
|
||||
if (index < 0 || index >= count)
|
||||
throw new StringIndexOutOfBoundsException(index);
|
||||
return value[index];
|
||||
}
|
||||
|
||||
/**
|
||||
* Get the specified array of characters. <code>srcOffset - srcEnd</code>
|
||||
* characters will be copied into the array you pass in.
|
||||
*
|
||||
* @param srcOffset the index to start copying from (inclusive)
|
||||
* @param srcEnd the index to stop copying from (exclusive)
|
||||
* @param dst the array to copy into
|
||||
* @param dstOffset the index to start copying into
|
||||
* @throws NullPointerException if dst is null
|
||||
* @throws IndexOutOfBoundsException if any source or target indices are
|
||||
* out of range (while unspecified, source problems cause a
|
||||
* StringIndexOutOfBoundsException, and dest problems cause an
|
||||
* ArrayIndexOutOfBoundsException)
|
||||
* @see System#arraycopy(Object, int, Object, int, int)
|
||||
*/
|
||||
public void getChars(int srcOffset, int srcEnd,
|
||||
char[] dst, int dstOffset)
|
||||
{
|
||||
if (srcOffset < 0 || srcEnd > count || srcEnd < srcOffset)
|
||||
throw new StringIndexOutOfBoundsException();
|
||||
System.arraycopy(value, srcOffset, dst, dstOffset, srcEnd - srcOffset);
|
||||
}
|
||||
|
||||
/**
|
||||
* Set the character at the specified index.
|
||||
*
|
||||
* @param index the index of the character to set starting at 0
|
||||
* @param ch the value to set that character to
|
||||
* @throws IndexOutOfBoundsException if index is negative or >= length()
|
||||
* (while unspecified, this is a StringIndexOutOfBoundsException)
|
||||
*/
|
||||
public void setCharAt(int index, char ch)
|
||||
{
|
||||
if (index < 0 || index >= count)
|
||||
throw new StringIndexOutOfBoundsException(index);
|
||||
// Call ensureCapacity to enforce copy-on-write.
|
||||
ensureCapacity(count);
|
||||
value[index] = ch;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param obj the <code>Object</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(Object)
|
||||
* @see #append(String)
|
||||
*/
|
||||
public StringBuilder append(Object obj)
|
||||
{
|
||||
return append(obj == null ? "null" : obj.toString());
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> to this <code>StringBuilder</code>. If
|
||||
* str is null, the String "null" is appended.
|
||||
*
|
||||
* @param str the <code>String</code> to append
|
||||
* @return this <code>StringBuilder</code>
|
||||
*/
|
||||
public StringBuilder append(String str)
|
||||
{
|
||||
if (str == null)
|
||||
str = "null";
|
||||
int len = str.count;
|
||||
ensureCapacity(count + len);
|
||||
str.getChars(0, len, value, count);
|
||||
count += len;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>StringBuilder</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. This behaves the same as
|
||||
* <code>append((Object) stringBuffer)</code>, except it is more efficient.
|
||||
*
|
||||
* @param stringBuffer the <code>StringBuilder</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see #append(Object)
|
||||
*/
|
||||
public StringBuilder append(StringBuffer stringBuffer)
|
||||
{
|
||||
if (stringBuffer == null)
|
||||
return append("null");
|
||||
synchronized (stringBuffer)
|
||||
{
|
||||
int len = stringBuffer.count;
|
||||
ensureCapacity(count + len);
|
||||
System.arraycopy(stringBuffer.value, 0, value, count, len);
|
||||
count += len;
|
||||
}
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>char</code> array to this <code>StringBuilder</code>.
|
||||
* This is similar (but more efficient) than
|
||||
* <code>append(new String(data))</code>, except in the case of null.
|
||||
*
|
||||
* @param data the <code>char[]</code> to append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws NullPointerException if <code>str</code> is <code>null</code>
|
||||
* @see #append(char[], int, int)
|
||||
*/
|
||||
public StringBuilder append(char[] data)
|
||||
{
|
||||
return append(data, 0, data.length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Append part of the <code>char</code> array to this
|
||||
* <code>StringBuilder</code>. This is similar (but more efficient) than
|
||||
* <code>append(new String(data, offset, count))</code>, except in the case
|
||||
* of null.
|
||||
*
|
||||
* @param data the <code>char[]</code> to append
|
||||
* @param offset the start location in <code>str</code>
|
||||
* @param count the number of characters to get from <code>str</code>
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws NullPointerException if <code>str</code> is <code>null</code>
|
||||
* @throws IndexOutOfBoundsException if offset or count is out of range
|
||||
* (while unspecified, this is a StringIndexOutOfBoundsException)
|
||||
*/
|
||||
public StringBuilder append(char[] data, int offset, int count)
|
||||
{
|
||||
if (offset < 0 || count < 0 || offset > data.length - count)
|
||||
throw new StringIndexOutOfBoundsException();
|
||||
ensureCapacity(this.count + count);
|
||||
System.arraycopy(data, offset, value, this.count, count);
|
||||
this.count += count;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param bool the <code>boolean</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(boolean)
|
||||
*/
|
||||
public StringBuilder append(boolean bool)
|
||||
{
|
||||
return append(bool ? "true" : "false");
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>char</code> to this <code>StringBuilder</code>.
|
||||
*
|
||||
* @param ch the <code>char</code> to append
|
||||
* @return this <code>StringBuilder</code>
|
||||
*/
|
||||
public StringBuilder append(char ch)
|
||||
{
|
||||
ensureCapacity(count + 1);
|
||||
value[count++] = ch;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the characters in the <code>CharSequence</code> to this
|
||||
* buffer.
|
||||
*
|
||||
* @param seq the <code>CharSequence</code> providing the characters
|
||||
* @return this <code>StringBuilder</code>
|
||||
*/
|
||||
public StringBuilder append(CharSequence seq)
|
||||
{
|
||||
return append(seq, 0, seq.length());
|
||||
}
|
||||
|
||||
/**
|
||||
* Append some characters from the <code>CharSequence</code> to this
|
||||
* buffer. If the argument is null, the four characters "null" are
|
||||
* appended.
|
||||
*
|
||||
* @param seq the <code>CharSequence</code> providing the characters
|
||||
* @param start the starting index
|
||||
* @param end one past the final index
|
||||
* @return this <code>StringBuilder</code>
|
||||
*/
|
||||
public StringBuilder append(CharSequence seq, int start,
|
||||
int end)
|
||||
{
|
||||
if (seq == null)
|
||||
return append("null");
|
||||
if (end - start > 0)
|
||||
{
|
||||
ensureCapacity(count + end - start);
|
||||
for (; start < end; ++start)
|
||||
value[count++] = seq.charAt(start);
|
||||
}
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param inum the <code>int</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(int)
|
||||
*/
|
||||
// FIXME: this is native in libgcj in StringBuffer.
|
||||
public StringBuilder append(int inum)
|
||||
{
|
||||
return append(String.valueOf(inum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param lnum the <code>long</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(long)
|
||||
*/
|
||||
public StringBuilder append(long lnum)
|
||||
{
|
||||
return append(Long.toString(lnum, 10));
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param fnum the <code>float</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(float)
|
||||
*/
|
||||
public StringBuilder append(float fnum)
|
||||
{
|
||||
return append(Float.toString(fnum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Append the <code>String</code> value of the argument to this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param dnum the <code>double</code> to convert and append
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @see String#valueOf(double)
|
||||
*/
|
||||
public StringBuilder append(double dnum)
|
||||
{
|
||||
return append(Double.toString(dnum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete characters from this <code>StringBuilder</code>.
|
||||
* <code>delete(10, 12)</code> will delete 10 and 11, but not 12. It is
|
||||
* harmless for end to be larger than length().
|
||||
*
|
||||
* @param start the first character to delete
|
||||
* @param end the index after the last character to delete
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if start or end are out of bounds
|
||||
*/
|
||||
public StringBuilder delete(int start, int end)
|
||||
{
|
||||
if (start < 0 || start > count || start > end)
|
||||
throw new StringIndexOutOfBoundsException(start);
|
||||
if (end > count)
|
||||
end = count;
|
||||
// This will unshare if required.
|
||||
ensureCapacity(count);
|
||||
if (count - end != 0)
|
||||
System.arraycopy(value, end, value, start, count - end);
|
||||
count -= end - start;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Delete a character from this <code>StringBuilder</code>.
|
||||
*
|
||||
* @param index the index of the character to delete
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if index is out of bounds
|
||||
*/
|
||||
public StringBuilder deleteCharAt(int index)
|
||||
{
|
||||
return delete(index, index + 1);
|
||||
}
|
||||
|
||||
/**
|
||||
* Replace characters between index <code>start</code> (inclusive) and
|
||||
* <code>end</code> (exclusive) with <code>str</code>. If <code>end</code>
|
||||
* is larger than the size of this StringBuilder, all characters after
|
||||
* <code>start</code> are replaced.
|
||||
*
|
||||
* @param start the beginning index of characters to delete (inclusive)
|
||||
* @param end the ending index of characters to delete (exclusive)
|
||||
* @param str the new <code>String</code> to insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if start or end are out of bounds
|
||||
* @throws NullPointerException if str is null
|
||||
*/
|
||||
public StringBuilder replace(int start, int end, String str)
|
||||
{
|
||||
if (start < 0 || start > count || start > end)
|
||||
throw new StringIndexOutOfBoundsException(start);
|
||||
|
||||
int len = str.count;
|
||||
// Calculate the difference in 'count' after the replace.
|
||||
int delta = len - (end > count ? count : end) + start;
|
||||
ensureCapacity(count + delta);
|
||||
|
||||
if (delta != 0 && end < count)
|
||||
System.arraycopy(value, end, value, end + delta, count - end);
|
||||
|
||||
str.getChars(0, len, value, start);
|
||||
count += delta;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a substring of this StringBuilder, starting at a specified index
|
||||
* and ending at the end of this StringBuilder.
|
||||
*
|
||||
* @param beginIndex index to start substring (base 0)
|
||||
* @return new String which is a substring of this StringBuilder
|
||||
* @throws StringIndexOutOfBoundsException if beginIndex is out of bounds
|
||||
* @see #substring(int, int)
|
||||
*/
|
||||
public String substring(int beginIndex)
|
||||
{
|
||||
return substring(beginIndex, count);
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a substring of this StringBuilder, starting at a specified index
|
||||
* and ending at one character before a specified index. This is implemented
|
||||
* the same as <code>substring(beginIndex, endIndex)</code>, to satisfy
|
||||
* the CharSequence interface.
|
||||
*
|
||||
* @param beginIndex index to start at (inclusive, base 0)
|
||||
* @param endIndex index to end at (exclusive)
|
||||
* @return new String which is a substring of this StringBuilder
|
||||
* @throws IndexOutOfBoundsException if beginIndex or endIndex is out of
|
||||
* bounds
|
||||
* @see #substring(int, int)
|
||||
*/
|
||||
public CharSequence subSequence(int beginIndex, int endIndex)
|
||||
{
|
||||
return substring(beginIndex, endIndex);
|
||||
}
|
||||
|
||||
/**
|
||||
* Creates a substring of this StringBuilder, starting at a specified index
|
||||
* and ending at one character before a specified index.
|
||||
*
|
||||
* @param beginIndex index to start at (inclusive, base 0)
|
||||
* @param endIndex index to end at (exclusive)
|
||||
* @return new String which is a substring of this StringBuilder
|
||||
* @throws StringIndexOutOfBoundsException if beginIndex or endIndex is out
|
||||
* of bounds
|
||||
*/
|
||||
public String substring(int beginIndex, int endIndex)
|
||||
{
|
||||
int len = endIndex - beginIndex;
|
||||
if (beginIndex < 0 || endIndex > count || endIndex < beginIndex)
|
||||
throw new StringIndexOutOfBoundsException();
|
||||
if (len == 0)
|
||||
return "";
|
||||
return new String(value, beginIndex, len);
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert a subarray of the <code>char[]</code> argument into this
|
||||
* <code>StringBuilder</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param str the <code>char[]</code> to insert
|
||||
* @param str_offset the index in <code>str</code> to start inserting from
|
||||
* @param len the number of characters to insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws NullPointerException if <code>str</code> is <code>null</code>
|
||||
* @throws StringIndexOutOfBoundsException if any index is out of bounds
|
||||
*/
|
||||
public StringBuilder insert(int offset,
|
||||
char[] str, int str_offset, int len)
|
||||
{
|
||||
if (offset < 0 || offset > count || len < 0
|
||||
|| str_offset < 0 || str_offset > str.length - len)
|
||||
throw new StringIndexOutOfBoundsException();
|
||||
ensureCapacity(count + len);
|
||||
System.arraycopy(value, offset, value, offset + len, count - offset);
|
||||
System.arraycopy(str, str_offset, value, offset, len);
|
||||
count += len;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param obj the <code>Object</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @exception StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(Object)
|
||||
*/
|
||||
public StringBuilder insert(int offset, Object obj)
|
||||
{
|
||||
return insert(offset, obj == null ? "null" : obj.toString());
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> argument into this
|
||||
* <code>StringBuilder</code>. If str is null, the String "null" is used
|
||||
* instead.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param str the <code>String</code> to insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
*/
|
||||
public StringBuilder insert(int offset, String str)
|
||||
{
|
||||
if (offset < 0 || offset > count)
|
||||
throw new StringIndexOutOfBoundsException(offset);
|
||||
if (str == null)
|
||||
str = "null";
|
||||
int len = str.count;
|
||||
ensureCapacity(count + len);
|
||||
System.arraycopy(value, offset, value, offset + len, count - offset);
|
||||
str.getChars(0, len, value, offset);
|
||||
count += len;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>char[]</code> argument into this
|
||||
* <code>StringBuilder</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param data the <code>char[]</code> to insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws NullPointerException if <code>data</code> is <code>null</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see #insert(int, char[], int, int)
|
||||
*/
|
||||
public StringBuilder insert(int offset, char[] data)
|
||||
{
|
||||
return insert(offset, data, 0, data.length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param bool the <code>boolean</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(boolean)
|
||||
*/
|
||||
public StringBuilder insert(int offset, boolean bool)
|
||||
{
|
||||
return insert(offset, bool ? "true" : "false");
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>char</code> argument into this <code>StringBuilder</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param ch the <code>char</code> to insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
*/
|
||||
public StringBuilder insert(int offset, char ch)
|
||||
{
|
||||
if (offset < 0 || offset > count)
|
||||
throw new StringIndexOutOfBoundsException(offset);
|
||||
ensureCapacity(count + 1);
|
||||
System.arraycopy(value, offset, value, offset + 1, count - offset);
|
||||
value[offset] = ch;
|
||||
count++;
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param inum the <code>int</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(int)
|
||||
*/
|
||||
public StringBuilder insert(int offset, int inum)
|
||||
{
|
||||
return insert(offset, String.valueOf(inum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param lnum the <code>long</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(long)
|
||||
*/
|
||||
public StringBuilder insert(int offset, long lnum)
|
||||
{
|
||||
return insert(offset, Long.toString(lnum, 10));
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param fnum the <code>float</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(float)
|
||||
*/
|
||||
public StringBuilder insert(int offset, float fnum)
|
||||
{
|
||||
return insert(offset, Float.toString(fnum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Insert the <code>String</code> value of the argument into this
|
||||
* <code>StringBuilder</code>. Uses <code>String.valueOf()</code> to convert
|
||||
* to <code>String</code>.
|
||||
*
|
||||
* @param offset the place to insert in this buffer
|
||||
* @param dnum the <code>double</code> to convert and insert
|
||||
* @return this <code>StringBuilder</code>
|
||||
* @throws StringIndexOutOfBoundsException if offset is out of bounds
|
||||
* @see String#valueOf(double)
|
||||
*/
|
||||
public StringBuilder insert(int offset, double dnum)
|
||||
{
|
||||
return insert(offset, Double.toString(dnum));
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds the first instance of a substring in this StringBuilder.
|
||||
*
|
||||
* @param str String to find
|
||||
* @return location (base 0) of the String, or -1 if not found
|
||||
* @throws NullPointerException if str is null
|
||||
* @see #indexOf(String, int)
|
||||
*/
|
||||
public int indexOf(String str)
|
||||
{
|
||||
return indexOf(str, 0);
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds the first instance of a String in this StringBuilder, starting at
|
||||
* a given index. If starting index is less than 0, the search starts at
|
||||
* the beginning of this String. If the starting index is greater than the
|
||||
* length of this String, or the substring is not found, -1 is returned.
|
||||
*
|
||||
* @param str String to find
|
||||
* @param fromIndex index to start the search
|
||||
* @return location (base 0) of the String, or -1 if not found
|
||||
* @throws NullPointerException if str is null
|
||||
*/
|
||||
public int indexOf(String str, int fromIndex)
|
||||
{
|
||||
if (fromIndex < 0)
|
||||
fromIndex = 0;
|
||||
int limit = count - str.count;
|
||||
for ( ; fromIndex <= limit; fromIndex++)
|
||||
if (regionMatches(fromIndex, str))
|
||||
return fromIndex;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds the last instance of a substring in this StringBuilder.
|
||||
*
|
||||
* @param str String to find
|
||||
* @return location (base 0) of the String, or -1 if not found
|
||||
* @throws NullPointerException if str is null
|
||||
* @see #lastIndexOf(String, int)
|
||||
*/
|
||||
public int lastIndexOf(String str)
|
||||
{
|
||||
return lastIndexOf(str, count - str.count);
|
||||
}
|
||||
|
||||
/**
|
||||
* Finds the last instance of a String in this StringBuilder, starting at a
|
||||
* given index. If starting index is greater than the maximum valid index,
|
||||
* then the search begins at the end of this String. If the starting index
|
||||
* is less than zero, or the substring is not found, -1 is returned.
|
||||
*
|
||||
* @param str String to find
|
||||
* @param fromIndex index to start the search
|
||||
* @return location (base 0) of the String, or -1 if not found
|
||||
* @throws NullPointerException if str is null
|
||||
*/
|
||||
public int lastIndexOf(String str, int fromIndex)
|
||||
{
|
||||
fromIndex = Math.min(fromIndex, count - str.count);
|
||||
for ( ; fromIndex >= 0; fromIndex--)
|
||||
if (regionMatches(fromIndex, str))
|
||||
return fromIndex;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Reverse the characters in this StringBuilder. The same sequence of
|
||||
* characters exists, but in the reverse index ordering.
|
||||
*
|
||||
* @return this <code>StringBuilder</code>
|
||||
*/
|
||||
public StringBuilder reverse()
|
||||
{
|
||||
// Call ensureCapacity to enforce copy-on-write.
|
||||
ensureCapacity(count);
|
||||
for (int i = count >> 1, j = count - i; --i >= 0; ++j)
|
||||
{
|
||||
char c = value[i];
|
||||
value[i] = value[j];
|
||||
value[j] = c;
|
||||
}
|
||||
return this;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert this <code>StringBuilder</code> to a <code>String</code>. The
|
||||
* String is composed of the characters currently in this StringBuilder. Note
|
||||
* that the result is a copy, and that future modifications to this buffer
|
||||
* do not affect the String.
|
||||
*
|
||||
* @return the characters in this StringBuilder
|
||||
*/
|
||||
public String toString()
|
||||
{
|
||||
return new String(this);
|
||||
}
|
||||
|
||||
/**
|
||||
* Predicate which determines if a substring of this matches another String
|
||||
* starting at a specified offset for each String and continuing for a
|
||||
* specified length. This is more efficient than creating a String to call
|
||||
* indexOf on.
|
||||
*
|
||||
* @param toffset index to start comparison at for this String
|
||||
* @param other non-null String to compare to region of this
|
||||
* @return true if regions match, false otherwise
|
||||
* @see #indexOf(String, int)
|
||||
* @see #lastIndexOf(String, int)
|
||||
* @see String#regionMatches(boolean, int, String, int, int)
|
||||
*/
|
||||
// GCJ LOCAL: Native to access String internals properly.
|
||||
private native boolean regionMatches(int toffset, String other);
|
||||
}
|
||||
29
libjava/java/lang/natStringBuilder.cc
Normal file
29
libjava/java/lang/natStringBuilder.cc
Normal file
@ -0,0 +1,29 @@
|
||||
// Native methods for StringBuilder.
|
||||
|
||||
/* Copyright (C) 2005 Free Software Foundation
|
||||
|
||||
This file is part of libgcj.
|
||||
|
||||
This software is copyrighted work licensed under the terms of the
|
||||
Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
|
||||
details. */
|
||||
|
||||
#include <config.h>
|
||||
#include <gcj/cni.h>
|
||||
#include <java/lang/StringBuilder.h>
|
||||
#include <java/lang/String.h>
|
||||
|
||||
jboolean
|
||||
java::lang::StringBuilder::regionMatches(jint offset, jstring other)
|
||||
{
|
||||
int len = other->count;
|
||||
int index = 0;
|
||||
jchar *sc = elements (value);
|
||||
jchar *oc = _Jv_GetStringChars (other);
|
||||
while (--len >= 0)
|
||||
{
|
||||
if (sc[offset++] != oc[index++])
|
||||
return false;
|
||||
}
|
||||
return true;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user