1 files changed, 164 insertions, 0 deletions
diff --git a/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp b/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp
new file mode 100644
index 00000000..364f71d5
--- /dev/null
+++ b/src/libs/xpcom18a4/xpcom/io/nsByteArrayInputStream.cpp
@@ -0,0 +1,164 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code, released
+ * March 31, 1998.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998-1999
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "nsByteArrayInputStream.h"
+#include "nsMemory.h"
+
+NS_IMPL_THREADSAFE_ISUPPORTS2(nsByteArrayInputStream, nsIInputStream, nsIByteArrayInputStream)
+
+nsByteArrayInputStream::nsByteArrayInputStream (char *buffer, PRUint32 bytes)
+    : _buffer (buffer), _nbytes (bytes), _pos (0)
+{ 
+}
+
+nsByteArrayInputStream::~nsByteArrayInputStream ()
+{
+    if (_buffer != NULL)
+        nsMemory::Free (_buffer);
+}
+
+NS_IMETHODIMP
+nsByteArrayInputStream::Available (PRUint32* aResult)
+{
+    if (aResult == NULL)
+        return NS_ERROR_NULL_POINTER;
+
+    if (_nbytes == 0 || _buffer == NULL)
+        *aResult = 0;
+    else
+        *aResult = _nbytes - _pos;
+
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsByteArrayInputStream::Read (char* aBuffer, PRUint32 aCount, PRUint32 *aNumRead)
+{
+    if (aBuffer == NULL || aNumRead == NULL)
+        return NS_ERROR_NULL_POINTER;
+
+    if (_nbytes == 0)
+        return NS_ERROR_FAILURE;
+
+    if (aCount == 0 || _pos == _nbytes)
+        *aNumRead = 0;
+    else
+    {
+        NS_ASSERTION (_buffer != NULL, "Stream buffer has been released - there's an ownership problem somewhere!");
+        if (_buffer == NULL)
+            *aNumRead = 0;
+        else
+        if (aCount > _nbytes - _pos)
+        {        
+            memcpy (aBuffer, &_buffer[_pos], *aNumRead = _nbytes - _pos);
+            _pos = _nbytes;
+        }
+        else
+        {
+            memcpy (aBuffer, &_buffer[_pos], *aNumRead = aCount);
+            _pos += aCount;
+        }
+    }
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsByteArrayInputStream::ReadSegments(nsWriteSegmentFun writer, void * aClosure, PRUint32 aCount, PRUint32 *aNumRead)
+{
+    if (aNumRead == NULL)
+        return NS_ERROR_NULL_POINTER;
+
+    if (_nbytes == 0)
+        return NS_ERROR_FAILURE;
+
+    if (aCount == 0 || _pos == _nbytes)
+        *aNumRead = 0;
+    else {
+        NS_ASSERTION (_buffer != NULL, "Stream buffer has been released - there's an ownership problem somewhere!");
+        PRUint32 readCount = PR_MIN(aCount, (_nbytes - _pos));
+        if (_buffer == NULL)
+            *aNumRead = 0;
+        else {
+            nsresult rv = writer (this, aClosure, &_buffer[_pos], 
+                                  _pos, readCount, aNumRead);
+            if (NS_SUCCEEDED(rv))
+                _pos += *aNumRead;
+        }
+    }
+
+    // do not propogate errors returned from writer!
+    return NS_OK;
+}
+
+NS_IMETHODIMP 
+nsByteArrayInputStream::IsNonBlocking(PRBool *aNonBlocking)
+{
+    *aNonBlocking = PR_TRUE;
+    return NS_OK;
+}
+
+NS_IMETHODIMP
+nsByteArrayInputStream::Close ()
+{
+    if (_buffer != NULL)
+    {
+        nsMemory::Free (_buffer);
+        _buffer = NULL;
+        _nbytes = 0;
+    }
+    else
+        return NS_ERROR_FAILURE;
+
+    return NS_OK;
+}
+
+NS_COM nsresult
+NS_NewByteArrayInputStream (nsIByteArrayInputStream* *aResult, char * buffer, unsigned long bytes)
+{
+    if (aResult == NULL)
+        return NS_ERROR_NULL_POINTER;
+
+    nsIByteArrayInputStream * stream = new nsByteArrayInputStream (buffer, bytes);
+
+    if (!stream)
+        return NS_ERROR_OUT_OF_MEMORY;
+
+    NS_ADDREF (stream);
+    *aResult = stream;
+    return NS_OK;
+}