import java.io.*;
import java.util.*;

/**
 *  Provides one or two static methods to alter text
 *  in a string. 
 *
 *  @author http://bumble.sf.net
 */
 
  
public class InsertText extends Object
{
  //--------------------------------------------
  private static String NEWLINE = System.getProperty("line.separator");
  //--------------------------------------------
  private String text;  

  //--------------------------------------------
  public InsertText()
  {
    this.text = "";
  }

  //--------------------------------------------
  public InsertText(String sText)
  {
    this.text = sText;
  } 

  //--------------------------------------------
  /** inserts a string in a string before a character */
  public static String insertBefore(String sText, char cMarker, String sInsert)
  {
    char cCurrent;
    StringBuffer sbReturn = new StringBuffer("");

    if (sText.indexOf(cMarker) == -1)
    {
      return sText;
    }

    for (int ii = 0; ii < sText.length(); ii++)
    {
      cCurrent = sText.charAt(ii);
      if (cCurrent == cMarker)
      {
        sbReturn.append(sInsert);
        sbReturn.append(cMarker);
      }
      else
      {
        sbReturn.append(cCurrent);
      }
    } //-- for

    return sbReturn.toString();

  } //-- method: insertBefore

  //--------------------------------------------
  /** inserts a string in a string after a character */
  public static String insertAfter(String sText, char cMarker, String sInsert)
  {
    char cCurrent;
    StringBuffer sbReturn = new StringBuffer("");

    if (sText.indexOf(cMarker) == -1)
    {
      return sText;
    }

    for (int ii = 0; ii < sText.length(); ii++)
    {
      cCurrent = sText.charAt(ii);
      if (cCurrent == cMarker)
      {
        sbReturn.append(cMarker);
        sbReturn.append(sInsert);
      }
      else
      {
        sbReturn.append(cCurrent);
      }
    } //-- for

    return sbReturn.toString();

  } //-- method: insertAfter


  //--------------------------------------------
  /** a main method for testing */
  public static void main(String[] args) throws Exception
  {
    
    StringBuffer sbUsageMessage = new StringBuffer("");
    sbUsageMessage.append("test usage: java InsertText char string");
    sbUsageMessage.append(NEWLINE);

    StringBuffer sbMessage = new StringBuffer("");


    if (args.length < 2)
    {	    
      System.out.println(sbUsageMessage);
      System.exit(-1);
    }

    String sText = "This is the old text";
    char cCharacter = args[0].charAt(0);
    String sNew = args[1];
        
    System.out.println("Using string:");
    System.out.println(sText);

    System.out.println("");
                                         
    System.out.print(".insertBefore() >");
    System.out.println(InsertText.insertBefore(sText, cCharacter, sNew));
    System.out.print(".insertAfter()  >");
    System.out.println(InsertText.insertAfter(sText, cCharacter, sNew));
 
  } //-- main()
  
} //-- InsertText class