UnSafeCharBuffer.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / clr / src / BCL / System / UnSafeCharBuffer.cs / 1 / UnSafeCharBuffer.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  UnSafeBuffer 
**
** Purpose: A class to detect incorrect usage of UnSafeBuffer 
**
**
===========================================================*/
 
namespace System {
    using System.Diagnostics; 
 
    unsafe internal struct UnSafeCharBuffer{
        char * m_buffer; 
        int m_totalSize;
        int m_length;

        public UnSafeCharBuffer( char *buffer,  int bufferSize) { 
            BCLDebug.Assert( buffer != null, "buffer pointer can't be null."  );
            BCLDebug.Assert( bufferSize >= 0, "buffer size can't be negative."  ); 
            m_buffer = buffer; 
            m_totalSize = bufferSize;
            m_length = 0; 
        }

        public void AppendString(string stringToAppend) {
            if( String.IsNullOrEmpty( stringToAppend ) ) { 
                return;
            } 
 
            if ( (m_totalSize - m_length) < stringToAppend.Length ) {
                throw new IndexOutOfRangeException(); 
            }

            fixed( char* pointerToString = stringToAppend ) {
                Buffer.memcpyimpl( (byte *) pointerToString, (byte*) (m_buffer + m_length), stringToAppend.Length * sizeof(char)); 
            }
 
            m_length += stringToAppend.Length; 
            BCLDebug.Assert(m_length <= m_totalSize, "Buffer has been overflowed!");
        } 

        public int Length {
            get {
                return m_length; 
            }
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
/*============================================================
** 
** Class:  UnSafeBuffer 
**
** Purpose: A class to detect incorrect usage of UnSafeBuffer 
**
**
===========================================================*/
 
namespace System {
    using System.Diagnostics; 
 
    unsafe internal struct UnSafeCharBuffer{
        char * m_buffer; 
        int m_totalSize;
        int m_length;

        public UnSafeCharBuffer( char *buffer,  int bufferSize) { 
            BCLDebug.Assert( buffer != null, "buffer pointer can't be null."  );
            BCLDebug.Assert( bufferSize >= 0, "buffer size can't be negative."  ); 
            m_buffer = buffer; 
            m_totalSize = bufferSize;
            m_length = 0; 
        }

        public void AppendString(string stringToAppend) {
            if( String.IsNullOrEmpty( stringToAppend ) ) { 
                return;
            } 
 
            if ( (m_totalSize - m_length) < stringToAppend.Length ) {
                throw new IndexOutOfRangeException(); 
            }

            fixed( char* pointerToString = stringToAppend ) {
                Buffer.memcpyimpl( (byte *) pointerToString, (byte*) (m_buffer + m_length), stringToAppend.Length * sizeof(char)); 
            }
 
            m_length += stringToAppend.Length; 
            BCLDebug.Assert(m_length <= m_totalSize, "Buffer has been overflowed!");
        } 

        public int Length {
            get {
                return m_length; 
            }
        } 
    } 
}

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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