/*
 * StringLib.java
 *
 * Copyright (C) 2003 Miika Nurminen
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */

/**
 *
 * @author  minurmin
 */
public class StringLib {
  
  /** Creates a new instance of StringLib */
  public StringLib() {
  }
  
  
  /**
   * Checks if any string in s equals any string in i. 
   * Returns first matching index or -1 if not found.
   */
  public static int arrayIndexOf(String[] hayStack, String[] n, boolean ignorecase) {
    if ((hayStack==null) || (hayStack.length==0) || (n==null) || (n.length==0)) return -1;
    for (int i=0; i<hayStack.length; i++) {
      for (int j=0; j<n.length; j++) {
        String needle = n[j];
        if (hayStack[i]==null) {
          if (needle==null)
            return i;
          else
            continue;
        }
        if (ignorecase) {
          if (hayStack[i].equalsIgnoreCase(needle)) return i;
        }
        else
          if (hayStack[i].equals(needle)) return i;
      }
    }
    return -1;
  }
  
  /**
   * Checks if any string in s equals i. 
   * Returns first matching index or -1 if not found.
   */
  public static int arrayIndexOf(String[] hayStack, String needle, boolean ignorecase) {
    if ((hayStack==null) || (hayStack.length==0)) return -1;
    for (int i=0; i<hayStack.length; i++) {
      if (hayStack[i]==null) {
        if (needle==null)
          return i;
        else
          continue;
      }
      if (ignorecase) {
        if (hayStack[i].equalsIgnoreCase(needle)) return i;
      }
      else
        if (hayStack[i].equals(needle)) return i;
    }
    return -1;
  }

  public static int arrayIndexOf(String[] hayStack, String needle) {
    return arrayIndexOf(hayStack,needle,false);
  }
  
  /**
   */
  public static String catOnce(String s,String toCat) {
    if ((s==null) || (toCat==null) || (toCat.length()==0)) return s;
    if (s.length()==0) return toCat;
    if ((toCat.length()>s.length()) || (s.lastIndexOf(toCat)<(s.length()-toCat.length()))) {
      return s+toCat;
    }
    return s;
  }

  public static boolean testEndStr(String name, String postfix) {
    return name.indexOf(postfix)==(name.length()-(postfix.length()));
  }

  
  
  public static String removePostfix(String src,String postfix) {
    int i = src.lastIndexOf(postfix);
    if (i>=0) {
      return src.substring(0,i);
    }
    return src;
  }
  
  public static String removePrefix(String src,String prefix) {
    int i = src.indexOf(prefix);
    if (i==0) {
      return src.substring(prefix.length());
    }
    return src;
  }  
        /**
   * Unit test.
   */
  public static void main(String[] args) {
/*    String[] s = {
      "testi","toinen",null,"","yet"
    };
    System.out.println(arrayIndexOf(s,""));
    System.out.println(arrayIndexOf(s,null));
    System.out.println(arrayIndexOf(s,"yet"));
    System.out.println(arrayIndexOf(s,"not found"));
    System.out.println(arrayIndexOf(s,"Toinen"));
    System.out.println(arrayIndexOf(s,"Toinen",true));*/
    
    System.out.println("Testing catOnce");
    String[] t = {"","testi","testi+",null,"l"};
    for (int i=0; i<t.length; i++) {
      System.out.println(t[i]+": "+catOnce(t[i], "+"));
      System.out.println(t[i]+": "+catOnce(t[i], "++"));
      System.out.println(t[i]+": "+catOnce(t[i], ""));
      System.out.println(t[i]+": "+catOnce(t[i], null));
    }
    System.out.println(removePostfix("201px","px"));
    System.out.println(removePostfix("px","px"));
    System.out.println(removePostfix("200","px"));
  }
}