Rename beast sources for consistency

modules/beast_core/streams/SubregionStream.cpp

@@ -0,0 +1,77 @@
+//------------------------------------------------------------------------------
+/*
+    This file is part of Beast: https://github.com/vinniefalco/Beast
+    Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
+
+    Portions of this file are from JUCE.
+    Copyright (c) 2013 - Raw Material Software Ltd.
+    Please visit http://www.juce.com
+
+    Permission to use, copy, modify, and/or distribute this software for any
+    purpose  with  or without fee is hereby granted, provided that the above
+    copyright notice and this permission notice appear in all copies.
+
+    THE  SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+    WITH  REGARD  TO  THIS  SOFTWARE  INCLUDING  ALL  IMPLIED  WARRANTIES  OF
+    MERCHANTABILITY  AND  FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+    ANY  SPECIAL ,  DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+    WHATSOEVER  RESULTING  FROM  LOSS  OF USE, DATA OR PROFITS, WHETHER IN AN
+    ACTION  OF  CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+    OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+//==============================================================================
+
+SubregionStream::SubregionStream (InputStream* const sourceStream,
+                                  const int64 start, const int64 length,
+                                  const bool deleteSourceWhenDestroyed)
+  : source (sourceStream, deleteSourceWhenDestroyed),
+    startPositionInSourceStream (start),
+    lengthOfSourceStream (length)
+{
+    SubregionStream::setPosition (0);
+}
+
+SubregionStream::~SubregionStream()
+{
+}
+
+int64 SubregionStream::getTotalLength()
+{
+    const int64 srcLen = source->getTotalLength() - startPositionInSourceStream;
+
+    return lengthOfSourceStream >= 0 ? bmin (lengthOfSourceStream, srcLen)
+                                     : srcLen;
+}
+
+int64 SubregionStream::getPosition()
+{
+    return source->getPosition() - startPositionInSourceStream;
+}
+
+bool SubregionStream::setPosition (int64 newPosition)
+{
+    return source->setPosition (bmax ((int64) 0, newPosition + startPositionInSourceStream));
+}
+
+int SubregionStream::read (void* destBuffer, int maxBytesToRead)
+{
+    bassert (destBuffer != nullptr && maxBytesToRead >= 0);
+
+    if (lengthOfSourceStream < 0)
+        return source->read (destBuffer, maxBytesToRead);
+
+    maxBytesToRead = (int) bmin ((int64) maxBytesToRead, lengthOfSourceStream - getPosition());
+
+    if (maxBytesToRead <= 0)
+        return 0;
+
+    return source->read (destBuffer, maxBytesToRead);
+}
+
+bool SubregionStream::isExhausted()
+{
+    if (lengthOfSourceStream >= 0 && getPosition() >= lengthOfSourceStream)
+        return true;
+
+    return source->isExhausted();
+}