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package gov.nih.nlm.nls.lvg.Util;
import com.ibm.icu.text.*;
import com.ibm.icu.lang.*;
/*****************************************************************************
* This class provides methods of string related operations.
*
*
History:
*
* @author NLM NLS Development Team
*
* @version V-2010
****************************************************************************/
public class Str
{
// public methods
/**
* Replace a source subString with a target string in an input string.
*
* @param inStr the input base string which will be changed.
* @param source the source pattern string which will be changed from.
* @param target the target pattern string which will be changed to.
*
* @return a string with changed pattern string from inStr.
*/
public static String Replace(String inStr, String source, String target)
{
int lastIndex = 0;
int sourceSize = source.length();
int targetSize = target.length();
String out = inStr;
// do the change
int curIndex = inStr.indexOf(source);
while(curIndex > -1)
{
String before = inStr.substring(0, curIndex);
String after =
inStr.substring(curIndex+sourceSize, inStr.length());
out = before + target + after;
inStr = out;
lastIndex = curIndex + targetSize;
curIndex = inStr.indexOf(source, lastIndex);
}
return out;
}
/**
* Concatenate the specified character to the end of a string.
* Return a blank string if the original string is null.
*
* @param orgStr the original string to be cancatenated to.
* @param catChar the character to be concatened
*
* @return a string that represents the concatenation of the original
* string followed by a cancatenated character. Return a blank
* string if the original string is null.
*/
public static String SmartCat(String orgStr, char catChar)
{
String outStr = orgStr;
// if the original string is null, return a new string
if(outStr == null)
{
outStr = new String();
}
// otherwise, cancatenate it
outStr += catChar;
return outStr;
}
/**
* Concatenate the specified character to the beginning of a string.
* Return a blank string if the original string is null.
*
* @param orgStr the original string to be cancatenated to.
* @param catChar the character to be concatened
*
* @return a string that represents the concatenation of a specified
* character and followed by the original string. Return a blank
* string if the original string is null.
*/
public static String SmartAddToHead(String orgStr, char catChar)
{
String outStr = orgStr;
// if the original string is null, return a new string
if(outStr == null)
{
outStr = new String();
}
outStr = (catChar + outStr);
return outStr;
}
/**
* Concatenate the specified string to the end of a string.
* Return a blank string if the original string is null.
*
* @param orgStr the original string to be cancatenated to.
* @param catStr the string to be concatened
*
* @return a string that represents the concatenation of the original
* string followed by a cancatenated string. Return a blank
* string if the original string is null.
*/
public static String SmartCat(String orgStr, String catStr)
{
String outStr = orgStr;
// if the original string is null, return a new string
if(outStr == null)
{
outStr = new String();
}
outStr += catStr;
return outStr;
}
/**
* A test driver for this class
*/
public static void main(String[] args)
{
if(args.length != 3)
{
System.out.println("** Usage: java Str ");
}
else
{
String inStr = args[0];
String source = args[1];
String target = args[2];
System.out.println("-- inStr: '" + inStr + "'");
System.out.println("-- source: '" + source + "'");
System.out.println("-- target: '" + target + "'");
System.out.println("-- Replace: '" + Replace(inStr, source, target)
+ "'");
}
}
}
