TeleStern/altoslib/AltosStringInputStream.java

62 lines
1.2 KiB
Java

/*
* Copyright © 2017 Keith Packard <keithp@keithp.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* This program 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
* General Public License for more details.
*/
package org.altusmetrum.altoslib_14;
import java.util.*;
import java.io.*;
public class AltosStringInputStream extends InputStream {
String s;
int at;
int mark;
public int available() {
return s.length() - at;
}
public void mark(int read_limit) {
mark = at;
}
public boolean markSupported() {
return true;
}
public int read() {
if (at == s.length())
return -1;
return (int) s.charAt(at++);
}
public void reset() {
at = mark;
}
public long skip(long n) throws IOException {
if (n < 0) n = 0;
if (at + n > s.length())
n = s.length() - at;
at += n;
return n;
}
public AltosStringInputStream(String s) {
this.s = s;
this.at = 0;
}
}