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Viewing changes to external/maccore/src/CoreFoundation/CFDataBuffer.cs

  • Committer: Package Import Robot
  • Author(s): Jo Shields
  • Date: 2013-05-12 09:46:03 UTC
  • mto: This revision was merged to the branch mainline in revision 29.
  • Revision ID: package-import@ubuntu.com-20130512094603-mad323bzcxvmcam0
Tags: upstream-4.0.5+dfsg
Import upstream version 4.0.5+dfsg

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external/maccore/src/CoreFoundation/CFDataBuffer.cs
 
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//
 
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// MonoMac.CoreFoundation.CFDataBuffer
 
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//
 
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// Authors:
 
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//      Martin Baulig (martin.baulig@xamarin.com)
 
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//
 
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// Copyright 2012 Xamarin Inc. (http://www.xamarin.com)
 
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//
 
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//
 
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// Permission is hereby granted, free of charge, to any person obtaining
 
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// a copy of this software and associated documentation files (the
 
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// "Software"), to deal in the Software without restriction, including
 
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// without limitation the rights to use, copy, modify, merge, publish,
 
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// distribute, sublicense, and/or sell copies of the Software, and to
 
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// permit persons to whom the Software is furnished to do so, subject to
 
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// the following conditions:
 
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// 
 
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// The above copyright notice and this permission notice shall be
 
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// included in all copies or substantial portions of the Software.
 
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// 
 
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 
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//
 
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using System;
 
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using System.Runtime.InteropServices;
 
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using MonoMac.CoreFoundation;
 
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namespace MonoMac.CoreFoundation {
 
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        class CFDataBuffer : IDisposable {
 
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                byte[] buffer;
 
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                CFData data;
 
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                bool owns;
 
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                public CFDataBuffer (byte[] buffer)
 
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                {
 
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                        this.buffer = buffer;
 
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                        /*
 
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                         * Copy the buffer to allow the native side to take ownership.
 
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                         */
 
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                        var gch = GCHandle.Alloc (buffer, GCHandleType.Pinned);
 
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                        data = CFData.FromData (gch.AddrOfPinnedObject (), buffer.Length);
 
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                        gch.Free ();
 
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                        owns = true;
 
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                }
 
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                public CFDataBuffer (IntPtr ptr)
 
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                {
 
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                        data = new CFData (ptr, false);
 
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                        buffer = data.GetBuffer ();
 
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                        owns = false;
 
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                }
 
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                ~CFDataBuffer ()
 
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                {
 
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                        Dispose (false);
 
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                }
 
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                public void Dispose ()
 
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                {
 
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                        Dispose (true);
 
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                        GC.SuppressFinalize (this);
 
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                }
 
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                public IntPtr Handle {
 
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                        get { return data.Handle; }
 
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                }
 
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                public byte[] Data {
 
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                        get { return buffer; }
 
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                }
 
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                public byte this [int idx] {
 
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                        get { return buffer [idx]; }
 
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                }
 
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                protected virtual void Dispose (bool disposing)
 
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                {
 
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                        if (data != null) {
 
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                                data.Dispose ();
 
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                                data = null;
 
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                        }
 
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                }
 
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        }
 
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}
 
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