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Posted to dev@ant.apache.org by sb...@apache.org on 2001/12/29 21:21:34 UTC
cvs commit: jakarta-ant/src/testcases/org/apache/tools/ant/util StringUtilsTest.java
sbailliez 01/12/29 12:21:34
Modified: src/main/org/apache/tools/ant/util StringUtils.java
Added: src/testcases/org/apache/tools/ant/util StringUtilsTest.java
Log:
Added additional methods to deal with strings.
This is mostly to avoid the use of regexp for
simple tasks.
Revision Changes Path
1.2 +51 -0 jakarta-ant/src/main/org/apache/tools/ant/util/StringUtils.java
Index: StringUtils.java
===================================================================
RCS file: /home/cvs/jakarta-ant/src/main/org/apache/tools/ant/util/StringUtils.java,v
retrieving revision 1.1
retrieving revision 1.2
diff -u -r1.1 -r1.2
--- StringUtils.java 15 Dec 2001 00:15:16 -0000 1.1
+++ StringUtils.java 29 Dec 2001 20:21:34 -0000 1.2
@@ -55,6 +55,7 @@
import java.io.StringWriter;
import java.io.PrintWriter;
+import java.util.Vector;
/**
* A set of helper methods related to string manipulation.
@@ -67,6 +68,55 @@
public final static String LINE_SEP = System.getProperty("line.separator");
/**
+ * Splits up a string into a list of lines. It is equivalent
+ * to <tt>split(data, '\n')</tt>.
+ * @param data the string to split up into lines.
+ * @return the list of lines available in the string.
+ */
+ public static Vector lineSplit(String data){
+ return split(data, '\n');
+ }
+
+ /**
+ * Splits up a string where elements are separated by a specific
+ * character and return all elements.
+ * @param data the string to split up.
+ * @param ch the separator character.
+ * @return the list of elements.
+ */
+ public static Vector split(String data, int ch){
+ Vector elems = new Vector();
+ int pos = -1;
+ int i = 0;
+ while ( (pos = data.indexOf(ch, i) ) != -1 ){
+ String elem = data.substring(i, pos);
+ elems.addElement(elem);
+ i = pos + 1;
+ }
+ elems.addElement( data.substring(i) );
+ return elems;
+ }
+
+ /**
+ * Replace occurrences into a string.
+ * @param data the string to replace occurrences into
+ * @param from the occurrence to replace.
+ * @param to the occurrence to be used as a replacement.
+ * @return the new string with replaced occurrences.
+ */
+ public static String replace(String data, String from, String to){
+ StringBuffer buf = new StringBuffer(data.length());
+ int pos = -1;
+ int i = 0;
+ while ( (pos = data.indexOf(from, i)) != -1 ){
+ buf.append( data.substring(i, pos) ).append(to);
+ i = pos + from.length();
+ }
+ buf.append( data.substring(i) );
+ return buf.toString();
+ }
+
+ /**
* Convenient method to retrieve the full stacktrace from a given exception.
* @param t the exception to get the stacktrace from.
* @return the stacktrace from the given exception.
@@ -79,4 +129,5 @@
pw.close();
return sw.toString();
}
+
}
1.1 jakarta-ant/src/testcases/org/apache/tools/ant/util/StringUtilsTest.java
Index: StringUtilsTest.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution, if
* any, must include the following acknowlegement:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowlegement may appear in the software itself,
* if and wherever such third-party acknowlegements normally appear.
*
* 4. The names "The Jakarta Project", "Ant", and "Apache Software
* Foundation" must not be used to endorse or promote products derived
* from this software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache"
* nor may "Apache" appear in their names without prior written
* permission of the Apache Group.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.tools.ant.util;
import java.util.Vector;
import junit.framework.TestCase;
/**
* Test for StringUtils
* @author <a href="mailto:sbailliez@apache.org">Stephane Bailliez</a>
*/
public class StringUtilsTest extends TestCase {
public StringUtilsTest(String s) {
super(s);
}
public void testSplit(){
final String data = "a,b,,";
Vector res = StringUtils.split(data, ',');
assertEquals(4, res.size());
assertEquals("a", res.elementAt(0));
assertEquals("b", res.elementAt(1));
assertEquals("", res.elementAt(2));
assertEquals("", res.elementAt(3));
}
public void testSplitLines(){
final String data = "a\r\nb\nc\nd\ne";
Vector res = StringUtils.lineSplit(data);
assertEquals(5, res.size());
assertEquals("a\r", res.elementAt(0));
assertEquals("b", res.elementAt(1));
assertEquals("c", res.elementAt(2));
assertEquals("d", res.elementAt(3));
assertEquals("e", res.elementAt(4));
}
public void testReplace() {
final String data = "abcabcabca";
String res = StringUtils.replace(data, "a", "");
assertEquals("bcbcbc", res);
}
}
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