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/* gnu.classpath.tools.StringToolkit
Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of GNU Classpath.
GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
GNU Classpath 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 for more details.
You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING. If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
package gnu.classpath.tools;
/**
* Provides various String-related helper methods.
*
* @author Julian Scheid
*/
public class StringToolkit
{
/**
* Prevents instantiation.
*/
private StringToolkit() {}
/**
* Return <code>haystack</code> with all occurrences of
* <code>needle</code> replaced by </code>replacement</code>.
*
* @param haystack the string to replace occurrences of <code>needle</code> in
* @param needle the substring to replace
* @param replacement the substring to replace <code>needle</code> with
*
* @return <code>haystack</code> with all occurrences of
* <code>needle</code> replaced by </code>replacement</code>.
*/
public static String replace(String haystack, String needle, String replacement)
{
int ndx = haystack.indexOf(needle);
if (ndx < 0) {
return haystack;
}
else {
StringBuffer result = new StringBuffer();
result.append(haystack.substring(0, ndx));
result.append(replacement);
ndx += needle.length();
int ndx2;
while ((ndx2 = haystack.indexOf(needle, ndx)) >= 0) {
result.append(haystack.substring(ndx, ndx2));
result.append(replacement);
ndx = ndx2 + needle.length();
}
result.append(haystack.substring(ndx));
return result.toString();
}
}
}
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