/*
* Copyright (c) 2012, Codename One 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. Codename One 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 Codename One through http://www.codenameone.com/ if you
* need additional information or have any questions.
*/
package com.codename1.util;
import com.codename1.impl.CodenameOneImplementation;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
/**
* Various utility methods for manipulating strings
* @author Chen Fishbein
*/
public class StringUtil {
private static CodenameOneImplementation impl;
/**
* @deprecated exposed as part of an internal optimization, this method isn't meant for general access
*/
public static void setImplementation(CodenameOneImplementation i) {
impl = i;
}
/**
* This method replaces all occurrences of the pattern with the
* replacement String
*
* @param source the String source
* @param pattern String to replace in the source
* @param replace replacement String
* @return string with replaced elements
*/
public static String replaceAll(String source, String pattern, String replace) {
StringBuilder sb = new StringBuilder();
int idx = 0;
String workingSource = source;
idx = workingSource.indexOf(pattern);
if(idx == -1){
return source;
}
while (idx != -1) {
sb.append(workingSource.substring(0, idx));
sb.append(replace);
workingSource = workingSource.substring(idx + pattern.length());
idx = workingSource.indexOf(pattern);
}
sb.append(workingSource);
return sb.toString();
}
/**
* Breaks a String to multiple strings.
*
* @param source the String to break
* @param separator the pattern to search and break.
* @return a Vector of Strings
* @deprecated use the tokenize() method instead
*/
public static Vector tokenizeString(String source, char separator) {
Vector tokenized = new Vector();
int len = source.length();
boolean lastSeparator = false;
StringBuilder buf = new StringBuilder();
for(int iter = 0 ; iter < len ; iter++) {
char current = source.charAt(iter);
if(current == separator) {
if(lastSeparator) {
buf.append(separator);
lastSeparator = false;
continue;
}
lastSeparator = true;
if(buf.length() > 0) {
tokenized.addElement(buf.toString());
buf = new StringBuilder();
}
} else {
lastSeparator = false;
buf.append(current);
}
}
if(buf.length() > 0) {
tokenized.addElement(buf.toString());
}
return tokenized;
}
/**
* Breaks a String to multiple strings (similar to string tokenizer)
*
* @param source the String to break
* @param separator the characters that can be used to search and break.
* @return a Vector of Strings
* @deprecated use the tokenize() method instead
*/
public static Vector tokenizeString(String source, String separator) {
if(separator.length() == 1) {
// slightly faster
return tokenizeString(source, separator.charAt(0));
}
Vector tokenized = new Vector();
int len = source.length();
StringBuilder buf = new StringBuilder();
for(int iter = 0 ; iter < len ; iter++) {
char current = source.charAt(iter);
if(separator.indexOf(current) > -1) {
if(buf.length() > 0) {
tokenized.addElement(buf.toString());
buf = new StringBuilder();
}
} else {
buf.append(current);
}
}
if(buf.length() > 0) {
tokenized.addElement(buf.toString());
}
return tokenized;
}
/**
* Breaks a String to multiple strings.
*
* @param source the String to break
* @param separator the pattern to search and break.
* @return a Vector of Strings
*/
public static List<String> tokenize(String source, char separator) {
ArrayList<String> tokenized = new ArrayList<String>();
if (impl == null) {
int len = source.length();
boolean lastSeparator = false;
StringBuilder buf = new StringBuilder();
for(int iter = 0 ; iter < len ; iter++) {
char current = source.charAt(iter);
if(current == separator) {
if(lastSeparator) {
buf.append(separator);
lastSeparator = false;
continue;
}
lastSeparator = true;
if(buf.length() > 0) {
tokenized.add(buf.toString());
buf = new StringBuilder();
}
} else {
lastSeparator = false;
buf.append(current);
}
}
if(buf.length() > 0) {
tokenized.add(buf.toString());
}
} else {
impl.splitString(source, separator, tokenized);
}
return tokenized;
}
/**
* Breaks a String to multiple strings (similar to string tokenizer)
*
* @param source the String to break
* @param separator the characters that can be used to search and break.
* @return a Vector of Strings
*/
public static List<String> tokenize(String source, String separator) {
if(separator.length() == 1) {
// slightly faster
return tokenize(source, separator.charAt(0));
}
ArrayList<String> tokenized = new ArrayList<String>();
int len = source.length();
StringBuilder buf = new StringBuilder();
for(int iter = 0 ; iter < len ; iter++) {
char current = source.charAt(iter);
if(separator.indexOf(current) > -1) {
if(buf.length() > 0) {
tokenized.add(buf.toString());
buf = new StringBuilder();
}
} else {
buf.append(current);
}
}
if(buf.length() > 0) {
tokenized.add(buf.toString());
}
return tokenized;
}
}