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/*******************************************************************************
* Copyright (c) 2008 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.core.internal.net;
import java.util.ArrayList;
public class StringUtil {
/**
* Splits a string into substrings using a delimiter array.
*
* @param value
* string to be tokenized
* @param delimiters
* array of delimiters
* @return array of tokens
*/
public static String[] split(String value, String[] delimiters) {
ArrayList result = new ArrayList();
int firstIndex = 0;
int separator = 0;
while (firstIndex != -1) {
firstIndex = -1;
for (int i = 0; i < delimiters.length; i++) {
int index = value.indexOf(delimiters[i]);
if (index != -1 && (index < firstIndex || firstIndex == -1)) {
firstIndex = index;
separator = i;
}
}
if (firstIndex != -1) {
if (firstIndex != 0) {
result.add(value.substring(0, firstIndex));
}
int newStart = firstIndex + delimiters[separator].length();
if (newStart <= value.length()) {
value = value.substring(newStart);
}
} else if (value.length() > 0) {
result.add(value);
}
}
return (String[]) result.toArray(new String[0]);
}
/**
* Tests equality of the given strings.
*
* @param sequence1
* candidate 1, may be null
* @param sequence2
* candidate 2, may be null
* @return true if both sequences are null or the sequences are equal
*/
public static final boolean equals(final CharSequence sequence1,
final CharSequence sequence2) {
if (sequence1 == sequence2) {
return true;
} else if (sequence1 == null || sequence2 == null) {
return false;
}
return sequence1.equals(sequence2);
}
/**
* Replace within <code>source</code> the occurrences of <code>from</code>
* with <code>to</code>.<br>
* <b>Note:</b> This has the same behavior as the
* <code>String.replace()</code> method within JDK 1.5.
*
* @param source
* @param from
* @param to
* @return the substituted string
*/
public static String replace(String source, String from, String to) {
if (from.length() == 0)
return source;
StringBuffer buffer = new StringBuffer();
int current = 0;
int pos = 0;
while (pos != -1) {
pos = source.indexOf(from, current);
if (pos == -1) {
buffer.append(source.substring(current));
} else {
buffer.append(source.substring(current, pos));
buffer.append(to);
current = pos + from.length();
}
}
return buffer.toString();
}
public static boolean hostMatchesFilter(String host, String filter) {
String suffixMatchingFilter = "*" + filter; //$NON-NLS-1$
StringMatcher matcher = new StringMatcher(suffixMatchingFilter, true, false);
return matcher.match(host);
}
}
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