Merge branch 'master' of ssh://git.gag.com/scm/git/fw/altos

[fw/altos] / altoslib / AltosStringInputStream.java

diff --git a/altoslib/AltosStringInputStream.java b/altoslib/AltosStringInputStream.java
new file mode 100644 (file)
index 0000000..48fff3e
--- /dev/null
+++ b/altoslib/AltosStringInputStream.java
@@ -0,0 +1,61 @@
+/*
+ * 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_12;
+
+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;
+       }
+}