From a931ca70cb6b5b230e4d9cb8f2f173e45ad82ed0 Mon Sep 17 00:00:00 2001
From: Fredrik Tolf <fredrik@dolda2000.com>
Date: Sun, 15 Nov 2009 07:49:25 +0100
Subject: [PATCH] Added a peekable reader.

---
 src/dolda/jsvc/next/PeekReader.java | 61 +++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 src/dolda/jsvc/next/PeekReader.java

diff --git a/src/dolda/jsvc/next/PeekReader.java b/src/dolda/jsvc/next/PeekReader.java
new file mode 100644
index 0000000..1c3fce5
--- /dev/null
+++ b/src/dolda/jsvc/next/PeekReader.java
@@ -0,0 +1,61 @@
+package dolda.jsvc.next;
+
+import java.io.*;
+
+public class PeekReader extends Reader {
+    private final Reader back;
+    private boolean p = false;
+    private int la;
+	
+    public PeekReader(Reader back) {
+	this.back = back;
+    }
+	
+    public void close() throws IOException {
+	back.close();
+    }
+	
+    public int read() throws IOException {
+	if(p) {
+	    p = false;
+	    return(la);
+	} else {
+	    return(back.read());
+	}
+    }
+	
+    public int read(char[] b, int off, int len) throws IOException {
+	int r = 0;
+	while(r < len) {
+	    int c = read();
+	    if(c < 0)
+		return(r);
+	    b[off + r++] = (char)c;
+	}
+	return(r);
+    }
+	
+    public boolean ready() throws IOException {
+	if(p)
+	    return(true);
+	return(back.ready());
+    }
+    
+    protected boolean whitespace(char c) {
+	return(Character.isWhitespace(c));
+    }
+
+    public int peek(boolean skipws) throws IOException {
+	if(p)
+	    return(la);
+	do {
+	    la = back.read();
+	    p = true;
+	} while(skipws && (la >= 0) && whitespace((char)la));
+	return(la);
+    }
+    
+    public int peek() throws IOException {
+	return(peek(false));
+    }
+}
-- 
2.11.0