utils.java

数据仓库工具

/**
    Copyright (C) 2002-2003  Together

    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

*/
package org.webdocwf.util.loader.generator;


/**
 * Utility methods for csv jdbc.
 *
 * @author  Zoran Milakovic
 */

public class Utils {

  /**
   * Replace all occurence of forReplace with replaceWith in input string.
   * @param input
   * @param forReplace
   * @param replaceWith
   * @return new string with replaced values
   */
  public static String replaceAll(String input, String forReplace,
                                  String replaceWith) {
    StringBuffer result = new StringBuffer();
    boolean hasMore = true;
    while (hasMore) {
      int start = input.indexOf(forReplace);
      int end = start + forReplace.length();
      if (start != -1) {
        result.append(input.substring(0, start) + replaceWith);
        input = input.substring(end);
      }
      else {
        hasMore = false;
        result.append(input);
      }
    }
    if (result.toString().equals(""))
      return input; //nothing is changed
    else
      return result.toString();
  }


  public static String handleQuotedString(String quotedString) {
    String retVal = quotedString;
    if ( (retVal.startsWith("'") && retVal.endsWith("'"))) {
      if (!retVal.equals("''")) {
        retVal = retVal.substring(retVal.indexOf("'") + 1,
                                  retVal.lastIndexOf("'"));
      }
      else {
        retVal = "";
      }
    }
    return retVal;
  }

  public static String[] replaceLineBrakesAndCarrReturn(
      String[] toReplace,
      String lineBreakEscape,
      String carriageReturnEscape) {
    String[] retVal = new String[toReplace.length];
    for (int i = 0; i < toReplace.length; i++) {
      if (toReplace[i] != null) {
        retVal[i] = replaceAll(toReplace[i], "\n", lineBreakEscape);
        retVal[i] = replaceAll(retVal[i], "\r", carriageReturnEscape);
      }
    }
    return retVal;
  }





}