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/*******************************************************************************
* Copyright (c) 2005, 2007 Remy Suen
* 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:
* Remy Suen <remy.suen@gmail.com> - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.core.util;
import java.util.ArrayList;
/**
* <p>
* The StringUtils class provides static methods that helps make string
* manipulation easy. The primary functionality it is meant to provide is the
* ability to split a string into a string array based on a given delimiter.
* This functionality is meant to take the place of the split(String) and
* split(String, int) method that was introduced in J2SE-1.4. Please note,
* however, that the splitting performed by this class simply splits the string
* based on the delimiter and does not perform any regular expression matching
* like the split methods provided in J2SE-1.4.
* </p>
*
*/
public final class StringUtils {
public static final String[] splitOnSpace(String string) {
int index = string.indexOf(' ');
if (index == -1) {
return new String[] {string};
}
ArrayList split = new ArrayList();
while (index != -1) {
split.add(string.substring(0, index));
string = string.substring(index + 1);
index = string.indexOf(' ');
}
if (!string.equals("")) { //$NON-NLS-1$
split.add(string);
}
return (String[]) split.toArray(new String[split.size()]);
}
public static final String[] split(String string, char character) {
int index = string.indexOf(character);
if (index == -1) {
return new String[] {string};
}
ArrayList split = new ArrayList();
while (index != -1) {
split.add(string.substring(0, index));
string = string.substring(index + 1);
index = string.indexOf(character);
}
if (!string.equals("")) { //$NON-NLS-1$
split.add(string);
}
return (String[]) split.toArray(new String[split.size()]);
}
public static final String[] split(String string, String delimiter) {
int index = string.indexOf(delimiter);
if (index == -1) {
return new String[] {string};
}
int length = delimiter.length();
ArrayList split = new ArrayList();
while (index != -1) {
split.add(string.substring(0, index));
string = string.substring(index + length);
index = string.indexOf(delimiter);
}
if (!string.equals("")) { //$NON-NLS-1$
split.add(string);
}
return (String[]) split.toArray(new String[split.size()]);
}
public static final String[] split(String string, String delimiter, int limit) {
int index = string.indexOf(delimiter);
if (index == -1) {
return new String[] {string};
}
int count = 0;
int length = delimiter.length();
ArrayList split = new ArrayList(limit);
while (index != -1 && count < limit - 1) {
split.add(string.substring(0, index));
string = string.substring(index + length);
index = string.indexOf(delimiter);
count++;
}
if (!string.equals("")) { //$NON-NLS-1$
split.add(string);
}
return (String[]) split.toArray(new String[split.size()]);
}
public static final String splitSubstring(String string, String delimiter, int pos) {
int index = string.indexOf(delimiter);
if (index == -1) {
return string;
}
int count = 0;
int length = delimiter.length();
while (count < pos) {
string = string.substring(index + length);
index = string.indexOf(delimiter);
count++;
}
return index == -1 ? string : string.substring(0, index);
}
public static final String xmlDecode(String string) {
if (string.equals("")) { //$NON-NLS-1$
return string;
}
int index = string.indexOf("&"); //$NON-NLS-1$
while (index != -1) {
string = string.substring(0, index) + '&' + string.substring(index + 5);
index = string.indexOf("&", index + 1); //$NON-NLS-1$
}
index = string.indexOf("""); //$NON-NLS-1$
while (index != -1) {
string = string.substring(0, index) + '"' + string.substring(index + 6);
index = string.indexOf(""", index + 1); //$NON-NLS-1$
}
index = string.indexOf("'"); //$NON-NLS-1$
while (index != -1) {
string = string.substring(0, index) + '\'' + string.substring(index + 6);
index = string.indexOf("'", index + 1); //$NON-NLS-1$
}
index = string.indexOf("<"); //$NON-NLS-1$
while (index != -1) {
string = string.substring(0, index) + '<' + string.substring(index + 4);
index = string.indexOf("<", index + 1); //$NON-NLS-1$
}
index = string.indexOf(">"); //$NON-NLS-1$
while (index != -1) {
string = string.substring(0, index) + '>' + string.substring(index + 4);
index = string.indexOf(">", index + 1); //$NON-NLS-1$
}
return string;
}
public static final String xmlEncode(String string) {
if (string.equals("")) { //$NON-NLS-1$
return string;
}
int index = string.indexOf('&');
while (index != -1) {
string = string.substring(0, index) + "&" //$NON-NLS-1$
+ string.substring(index + 1);
index = string.indexOf('&', index + 1);
}
index = string.indexOf('"');
while (index != -1) {
string = string.substring(0, index) + """ //$NON-NLS-1$
+ string.substring(index + 1);
index = string.indexOf('"', index + 1);
}
index = string.indexOf('\'');
while (index != -1) {
string = string.substring(0, index) + "'" //$NON-NLS-1$
+ string.substring(index + 1);
index = string.indexOf('\'', index + 1);
}
index = string.indexOf('<');
while (index != -1) {
string = string.substring(0, index) + "<" //$NON-NLS-1$
+ string.substring(index + 1);
index = string.indexOf('<', index + 1);
}
index = string.indexOf('>');
while (index != -1) {
string = string.substring(0, index) + ">" //$NON-NLS-1$
+ string.substring(index + 1);
index = string.indexOf('>', index + 1);
}
return string;
}
/**
* Returns whether the first parameter contains the second parameter.
* @param string must not be <code>.
* @param target must not be <code> null.
* @return true if the target is contained within the string.
*/
public static boolean contains(String string, String target) {
return (string.indexOf(target) != -1);
}
/**
* Returns the string resulting from replacing all occurrences of the target with the replace
* string. Note that the target matches literally, and this is not the same behavior as the
* String.replaceAll, which uses regular expressions for doing the matching.
* @param string the start string. Must not be <code>null</code>.
* @param target the target to search for in the start string. Must not be <code>null</code>.
* @param replace the replacement string to substitute when the target is found. Must not be <code>null</code>.
* @return String result. Will not be <code>null</code>. If target is not found in the given string,
* then the result will be the entire input string.
*/
public static String replaceAll(String string, String target, String replace) {
final int index = string.indexOf(target);
if (index == -1)
return string;
return string.substring(0, index) + replace + replaceAll(string.substring(index + target.length()), target, replace);
}
/**
* Returns the string resulting from replacing all occurrences of the target with the replace
* string. Note that the target matches literally but ignoring the case, and this is not the same behavior as the
* String.replaceAll, which uses regular expressions for doing the matching.
* @param string the start string. Must not be <code>null</code>.
* @param target the target to search for in the start string. Must not be <code>null</code>.
* @param replace the replacement string to substitute when the target is found. Must not be <code>null</code>.
* @return String result. Will not be <code>null</code>. If target is not found in the given string,
* then the result will be the entire input string.
*
* @see StringUtils#replaceAll(String, String, String) but case insensitive
*/
public static String replaceAllIgnoreCase(String string, String target, String replace) {
final int index = string.toLowerCase().indexOf(target.toLowerCase());
if (index == -1)
return string;
return string.substring(0, index) + replace + replaceAllIgnoreCase(string.substring(index + target.length()), target, replace);
}
}
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