jdk8-mips64-public/jaxws: comparison src/share/jaxws_classes/javax/xml/bind/WhiteSpaceProcessor.java

--1:000000000000
+:373ffda63c9a
+/*
+* Copyright (c) 2007, 2013, Oracle and/or its affiliates. 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.  Oracle designates this
+* particular file as subject to the "Classpath" exception as provided
+* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+* or visit www.oracle.com if you need additional information or have any
+* questions.
+*/
+package javax.xml.bind;
+/**
+* Processes white space normalization.
+*
+* @since 1.0
+*/
+abstract class WhiteSpaceProcessor {
+// benchmarking (see test/src/ReplaceTest.java in the CVS Attic)
+// showed that this code is slower than the current code.
+//
+//    public static String replace(String text) {
+//        final int len = text.length();
+//        StringBuffer result = new StringBuffer(len);
+//
+//        for (int i = 0; i < len; i++) {
+//            char ch = text.charAt(i);
+//            if (isWhiteSpace(ch))
+//                result.append(' ');
+//            else
+//                result.append(ch);
+//        }
+//
+//        return result.toString();
+//    }
+public static String replace(String text) {
+return replace( (CharSequence)text ).toString();
+}
+/**
+* @since 2.0
+*/
+public static CharSequence replace(CharSequence text) {
+int i=text.length()-1;
+// look for the first whitespace char.
+while( i>=0 && !isWhiteSpaceExceptSpace(text.charAt(i)) )
+i--;
+if( i<0 )
+// no such whitespace. replace(text)==text.
+return text;
+// we now know that we need to modify the text.
+// allocate a char array to do it.
+StringBuilder buf = new StringBuilder(text);
+buf.setCharAt(i--,' ');
+for( ; i>=0; i-- )
+if( isWhiteSpaceExceptSpace(buf.charAt(i)))
+buf.setCharAt(i,' ');
+return new String(buf);
+}
+/**
+* Equivalent of {@link String#trim()}.
+* @since 2.0
+*/
+public static CharSequence trim(CharSequence text) {
+int len = text.length();
+int start = 0;
+while( start<len && isWhiteSpace(text.charAt(start)) )
+start++;
+int end = len-1;
+while( end>start && isWhiteSpace(text.charAt(end)) )
+end--;
+if(start==0 && end==len-1)
+return text;    // no change
+else
+return text.subSequence(start,end+1);
+}
+public static String collapse(String text) {
+return collapse( (CharSequence)text ).toString();
+}
+/**
+* This is usually the biggest processing bottleneck.
+*
+* @since 2.0
+*/
+public static CharSequence collapse(CharSequence text) {
+int len = text.length();
+// most of the texts are already in the collapsed form.
+// so look for the first whitespace in the hope that we will
+// never see it.
+int s=0;
+while(s<len) {
+if(isWhiteSpace(text.charAt(s)))
+break;
+s++;
+}
+if(s==len)
+// the input happens to be already collapsed.
+return text;
+// we now know that the input contains spaces.
+// let's sit down and do the collapsing normally.
+StringBuilder result = new StringBuilder(len /*allocate enough size to avoid re-allocation*/ );
+if(s!=0) {
+for( int i=0; i<s; i++ )
+result.append(text.charAt(i));
+result.append(' ');
+}
+boolean inStripMode = true;
+for (int i = s+1; i < len; i++) {
+char ch = text.charAt(i);
+boolean b = isWhiteSpace(ch);
+if (inStripMode && b)
+continue; // skip this character
+inStripMode = b;
+if (inStripMode)
+result.append(' ');
+else
+result.append(ch);
+}
+// remove trailing whitespaces
+len = result.length();
+if (len > 0 && result.charAt(len - 1) == ' ')
+result.setLength(len - 1);
+// whitespaces are already collapsed,
+// so all we have to do is to remove the last one character
+// if it's a whitespace.
+return result;
+}
+/**
+* Returns true if the specified string is all whitespace.
+*/
+public static final boolean isWhiteSpace(CharSequence s) {
+for( int i=s.length()-1; i>=0; i-- )
+if(!isWhiteSpace(s.charAt(i)))
+return false;
+return true;
+}
+/** returns true if the specified char is a white space character. */
+public static final boolean isWhiteSpace(char ch) {
+// most of the characters are non-control characters.
+// so check that first to quickly return false for most of the cases.
+if( ch>0x20 )   return false;
+// other than we have to do four comparisons.
+return ch == 0x9 || ch == 0xA || ch == 0xD || ch == 0x20;
+}
+/**
+* Returns true if the specified char is a white space character
+* but not 0x20.
+*/
+protected static final boolean isWhiteSpaceExceptSpace(char ch) {
+// most of the characters are non-control characters.
+// so check that first to quickly return false for most of the cases.
+if( ch>=0x20 )   return false;
+// other than we have to do four comparisons.
+return ch == 0x9 || ch == 0xA || ch == 0xD;
+}
+}

Mercurial > jdk8-mips64-public > jaxws / file comparison

comparison: src/share/jaxws_classes/javax/xml/bind/WhiteSpaceProcessor.java

src/share/jaxws_classes/javax/xml/bind/WhiteSpaceProcessor.java