001 package net.sourceforge.retroweaver.runtime.java.lang; 002 003 public class StringBuffer_ { 004 005 private StringBuffer_() { 006 // private constructor 007 } 008 009 public static StringBuffer StringBuffer(final CharSequence cs) { 010 return new StringBuffer(cs.toString()); 011 } 012 013 public static void trimToSize(final StringBuffer b) { 014 // do nothing: according to the 1.5 javadoc, 015 // there is no garantee the buffer capacity will be reduced to 016 // fit the actual size 017 } 018 019 public static StringBuffer append(final StringBuffer b, 020 final CharSequence cs) { 021 return b.append(cs==null?"null":cs.toString()); 022 } 023 024 public static StringBuffer append(final StringBuffer b, 025 final CharSequence cs, final int start, final int end) { 026 return b.append(cs==null?"null".substring(start, end):cs.subSequence(start, end).toString()); 027 } 028 029 public static StringBuffer insert(final StringBuffer b, final int offset, 030 final CharSequence cs) { 031 return b.insert(offset, cs.toString()); 032 } 033 034 public static StringBuffer insert(final StringBuffer b, final int offset, 035 final CharSequence cs, final int start, final int end) { 036 return b.insert(offset, cs.subSequence(start, end).toString()); 037 } 038 039 }