/* Copyright (c) 2001-2009, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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*/
import java.io.IOException;
import java.io.InputStream;
/**
* minimal InputStream subclass to fetch bytes form a String
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 1.7.0
*/
public class StringInputStream extends InputStream {
protected int strOffset = 0;
protected int charOffset = 0;
protected int available;
protected String str;
public StringInputStream(String s) {
str = s;
available = s.length() * 2;
}
public int read() throws java.io.IOException {
if (available == 0) {
return -1;
}
available--;
char c = str.charAt(strOffset);
if (charOffset == 0) {
charOffset = 1;
return (c & 0x0000ff00) >> 8;
} else {
charOffset = 0;
strOffset++;
return c & 0x000000ff;
}
}
public int available() throws IOException {
return available;
}
}
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