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Viewing changes to mybs/java/src/org/blobstreaming/lib/str.java

  • Committer: paul-mccullagh
  • Date: 2008-03-26 11:35:17 UTC
  • Revision ID: paul-mccullagh-afb1610c21464a577ae428d72fc725eb986c05a5
Initial import

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mybs/java/src/org/blobstreaming/lib/str.java
 
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/* Copyright (c) 2007 SNAP Innovation GmbH
 
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 *
 
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 * BLOB Streaming for MySQL
 
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 *
 
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 * This program is free software; you can redistribute it and/or modify
 
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 * it under the terms of the GNU General Public License as published by
 
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 * the Free Software Foundation; either version 2 of the License, or
 
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 * (at your option) any later version.
 
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 *
 
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 * This program is distributed in the hope that it will be useful,
 
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
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 * GNU General Public License for more details.
 
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 *
 
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 * You should have received a copy of the GNU General Public License
 
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 * along with this program; if not, write to the Free Software
 
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 
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 *
 
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 * Paul McCullagh
 
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 *
 
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 * 2007-07-30
 
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 *
 
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 * H&G2JCtL
 
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 *
 
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 * String utilities
 
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 *
 
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 */
 
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package org.blobstreaming.lib;
 
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public class str {
 
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        /**
 
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         * Index return is 0 for the first position in the string.
 
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         * -1 means not found.
 
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         */
 
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        public static int locate(String from, String search, int count)
 
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        {
 
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                int i;
 
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                if (count < 0) {
 
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                        count = -count;
 
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                        i = from.length();
 
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                        while (count > 0) {
 
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                                i = from.lastIndexOf(search, i-1);
 
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                                if (i == -1)
 
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                                        break;
 
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                                count--;
 
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                        }
 
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                }
 
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                else {
 
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                        i = -1;
 
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                        while (count > 0) {
 
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                                i = from.indexOf(search, i+1);
 
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                                if (i == -1)
 
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                                        break;
 
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                                count--;
 
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                        }
 
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                }
 
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                return i;
 
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        }
 
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        public static int locate(String from, String search)
 
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        {
 
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                return locate(from, search, 1);
 
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        }
 
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        public static String left(String from, String search, int count)
 
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        {
 
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                int x = locate(from, search, count);
 
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                if (x == -1) {
 
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                        if (count >= 0)
 
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                                return from;
 
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                        return "";
 
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                }
 
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                return from.substring(0, x);
 
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        }
 
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        public static String left(String from, String search)
 
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        {
 
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                return left(from, search, 1);
 
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        }
 
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        public static String right(String from, String search, int count)
 
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        {
 
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                int x = locate(from, search, count);
 
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                if (x == -1) {
 
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                        if (count >= 0)
 
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                                return "";
 
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                        return from;
 
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                }
 
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                return from.substring(x+search.length());
 
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        }
 
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        public static String right(String from, String search)
 
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        {
 
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                return right(from, search, 1);
 
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        }
 
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        /**
 
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         * Should trim CR and LF as well.
 
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         */
 
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        public static String trim(String s)
 
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        {
 
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                return s.trim();
 
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        }
 
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        public static String substr(String s, int offset, int len)
 
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        {
 
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                return s.substring(offset, offset+len);
 
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        }
 
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        public static boolean listContains(String list, String val)
 
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        {
 
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                String item;
 
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                while (list != "") {
 
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                        item = trim(left(list, ","));
 
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                        if (item.equals(val))
 
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                                return true;
 
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                        list = trim(right(list, ","));
 
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                }
 
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                return false;
 
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        }
 
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        public static String replaceAll(String string, String replace, String with)
 
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        {
 
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                StringBuffer result;
 
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                if (string == null)
 
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                        return(null);
 
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                result = new StringBuffer();
 
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                while (locate(string, replace) >= 0) {
 
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                        result.append(left(string, replace));
 
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                        result.append(with);
 
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                        string = right(string, replace);
 
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                }
 
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                result.append(string);
 
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                return result.toString();
 
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        }
 
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        public static String base64encode(String value, int line_size)
 
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        {
 
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                return value;
 
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        }
 
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        public static String base64encode(String value)
 
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        {
 
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                return base64encode(value, 76);
 
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        }
 
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        public static String base64decode(String value)
 
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        {
 
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                return value;
 
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        }
 
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}