/*******************************************************************************
* Copyright (c) 2010 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.wst.jsdt.web.ui.tests.internal;
import java.io.IOException;
import java.io.StringReader;
/**
* @see org.eclipse.wst.xml.core.tests.util.StringCompareUtil
* @see org.eclipse.wst.sse.core.utils.StringUtils
*/
public class StringUtils {
/**
* Replace matching literal portions of a string with another string
*/
public static String replace(String aString, String source, String target) {
if (aString == null)
return null;
String normalString = ""; //$NON-NLS-1$
int length = aString.length();
int position = 0;
int previous = 0;
int spacer = source.length();
StringBuffer sb = new StringBuffer(normalString);
while (position + spacer - 1 < length && aString.indexOf(source, position) > -1) {
position = aString.indexOf(source, previous);
sb.append(normalString);
sb.append(aString.substring(previous, position));
sb.append(target);
position += spacer;
previous = position;
}
sb.append(aString.substring(position, aString.length()));
normalString = sb.toString();
return normalString;
}
public static boolean equalsIgnoreLineSeperator(String string1, String string2) {
if (string1 == null)
return false;
if (string2 == null)
return false;
StringReader s1Reader = new StringReader(string1);
StringReader s2Reader = new StringReader(string2);
// assume true unless find evidence to the contrary
boolean result = true;
int s1Char = -1;
int s2Char = -1;
do {
s1Char = getNextChar(s1Reader);
s2Char = getNextChar(s2Reader);
if (s1Char != s2Char) {
result = false;
break;
}
}
while (s1Char != -1 && s2Char != -1);
return result;
}
/**
* Method getNextChar.
* @param s1Reader
* @return char
*/
private static int getNextChar(StringReader reader) {
int nextChar = -1;
try {
nextChar = reader.read();
while (isEOL(nextChar)) {
nextChar = reader.read();
}
}
catch (IOException e) {
e.printStackTrace();
}
return nextChar;
}
private static boolean isEOL(int aChar) {
return (aChar == '\n' || aChar == '\r');
}
}