src/jdk.httpserver/share/classes/sun/net/httpserver/FixedLengthInputStream.java
changeset 47216 71c04702a3d5
parent 25859 3317bb8137f4
child 47705 a6f8cacdef93
child 55763 634d8e14c172
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.httpserver/share/classes/sun/net/httpserver/FixedLengthInputStream.java	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package sun.net.httpserver;
+
+import java.io.*;
+import java.net.*;
+import com.sun.net.httpserver.*;
+import com.sun.net.httpserver.spi.*;
+
+/**
+ * a class which allows the caller to read up to a defined
+ * number of bytes off an underlying stream
+ * close() does not close the underlying stream
+ */
+
+class FixedLengthInputStream extends LeftOverInputStream {
+    private long remaining;
+
+    FixedLengthInputStream (ExchangeImpl t, InputStream src, long len) {
+        super (t, src);
+        this.remaining = len;
+    }
+
+    protected int readImpl (byte[]b, int off, int len) throws IOException {
+
+        eof = (remaining == 0L);
+        if (eof) {
+            return -1;
+        }
+        if (len > remaining) {
+            len = (int)remaining;
+        }
+        int n = in.read(b, off, len);
+        if (n > -1) {
+            remaining -= n;
+            if (remaining == 0) {
+                t.getServerImpl().requestCompleted (t.getConnection());
+            }
+        }
+        return n;
+    }
+
+    public int available () throws IOException {
+        if (eof) {
+            return 0;
+        }
+        int n = in.available();
+        return n < remaining? n: (int)remaining;
+    }
+
+    public boolean markSupported () {return false;}
+
+    public void mark (int l) {
+    }
+
+    public void reset () throws IOException {
+        throw new IOException ("mark/reset not supported");
+    }
+}