moving files around

2026-05-22 00:00:03 -04:00 · 2009-11-06 21:36:46 +01:00
parent ad913b5093
commit b3aa378f16
79 changed files with 0 additions and 0 deletions
@@ -0,0 +1,138 @@
+/*
+ * Copyright (c) 2008, Harald Kuhr
+ * 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 "TwelveMonkeys" 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 THE COPYRIGHT OWNER 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; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+ * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+package com.twelvemonkeys.io;
+
+import java.io.OutputStream;
+import java.io.IOException;
+import java.util.Stack;
+
+/**
+ * Abstract base class for {@code OutputStream}s implementing the
+ * {@code Seekable} interface.
+ * <p/>
+ * @see SeekableInputStream
+ *
+ * @author <a href="mailto:harald.kuhr@gmail.com">Harald Kuhr</a>
+ * @version $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/io/SeekableOutputStream.java#2 $
+ */
+public abstract class SeekableOutputStream extends OutputStream implements Seekable {
+    // TODO: Implement
+    long mPosition;
+    long mFlushedPosition;
+    boolean mClosed;
+
+    protected Stack<Long> mMarkedPositions = new Stack<Long>();
+
+    /// Outputstream overrides
+    @Override
+    public final void write(byte pBytes[]) throws IOException {
+        write(pBytes, 0, pBytes != null ? pBytes.length : 1);
+    }
+
+    /// Seekable implementation
+    // TODO: This is common behaviour/implementation with SeekableInputStream,
+    // probably a good idea to extract a delegate..?
+    public final void seek(long pPosition) throws IOException {
+        checkOpen();
+
+        // TODO: This is correct according to javax.imageio (IndexOutOfBoundsException),
+        // but it's inconsistent with reset that throws IOException...
+        if (pPosition < mFlushedPosition) {
+            throw new IndexOutOfBoundsException("position < flushedPosition!");
+        }
+
+        seekImpl(pPosition);
+        mPosition = pPosition;
+    }
+
+    protected abstract void seekImpl(long pPosition) throws IOException;
+
+    public final void mark() {
+        mMarkedPositions.push(mPosition);
+    }
+
+    public final void reset() throws IOException {
+        checkOpen();
+        if (!mMarkedPositions.isEmpty()) {
+            long newPos = mMarkedPositions.pop();
+
+            // TODO: This is correct according to javax.imageio (IOException),
+            // but it's inconsistent with seek that throws IndexOutOfBoundsException...
+            if (newPos < mFlushedPosition) {
+                throw new IOException("Previous marked position has been discarded!");
+            }
+
+            seek(newPos);
+        }
+    }
+
+    public final void flushBefore(long pPosition) throws IOException {
+        if (pPosition < mFlushedPosition) {
+            throw new IndexOutOfBoundsException("position < flushedPosition!");
+        }
+        if (pPosition > getStreamPosition()) {
+            throw new IndexOutOfBoundsException("position > getStreamPosition()!");
+        }
+        checkOpen();
+        flushBeforeImpl(pPosition);
+        mFlushedPosition = pPosition;
+    }
+
+    protected abstract void flushBeforeImpl(long pPosition) throws IOException;
+
+    @Override
+    public final void flush() throws IOException {
+        flushBefore(mFlushedPosition);
+    }
+
+    public final long getFlushedPosition() throws IOException {
+        checkOpen();
+        return mFlushedPosition;
+    }
+
+    public final long getStreamPosition() throws IOException {
+        checkOpen();
+        return mPosition;
+    }
+
+    protected final void checkOpen() throws IOException {
+        if (mClosed) {
+            throw new IOException("closed");
+        }
+    }
+
+    @Override
+    public final void close() throws IOException {
+        checkOpen();
+        mClosed = true;
+        closeImpl();
+    }
+
+    protected abstract void closeImpl() throws IOException;
+}