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//------------------------------------------------------------------------------
// <copyright file="EmptyTextWriter.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
using System;
using System.CodeDom.Compiler;
using System.Collections;
using System.Globalization;
using System.IO;
using System.Text;
using System.Web.Mobile;
using System.Web.UI.MobileControls;
#if COMPILING_FOR_SHIPPED_SOURCE
namespace System.Web.UI.MobileControls.ShippedAdapterSource
#else
namespace System.Web.UI.MobileControls.Adapters
#endif
{
/*
* EmptyTextWriter class. Like the Null text writer, but keeps track of whether
* anything was written or not.
*
* Copyright (c) 2000 Microsoft Corporation
*/
[Obsolete("The System.Web.Mobile.dll assembly has been deprecated and should no longer be used. For information about how to develop ASP.NET mobile applications, see http://go.microsoft.com/fwlink/?LinkId=157231.")]
internal class EmptyTextWriter : TextWriter
{
#if UNUSED_CODE
bool _writeCalled = false;
#endif
bool _nonWhiteSpaceWritten = false;
internal EmptyTextWriter() : base(CultureInfo.CurrentCulture)
{
}
#if UNUSED_CODE
internal /*public*/ bool WriteCalled
{
get
{
return _writeCalled;
}
}
#endif
internal /*public*/ bool NonWhiteSpaceWritten
{
get
{
return _nonWhiteSpaceWritten;
}
}
internal /*public*/ void Reset()
{
#if UNUSED_CODE
_writeCalled = false;
#endif
_nonWhiteSpaceWritten = false;
}
public override void Write(string s)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(s))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(bool value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(char value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(char[] buffer)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(buffer))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(char[] buffer, int index, int count)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(buffer, index, count))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(double value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(float value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(int value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(long value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void Write(Object value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (value != null && !IsWhiteSpace(value.ToString()))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(String format, Object arg0)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg0)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(String format, Object arg0, Object arg1)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg0, arg1)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void Write(String format, params object[] arg)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(string s)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(s))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(bool value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(char value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(char[] buffer)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(buffer))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(char[] buffer, int index, int count)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(buffer, index, count))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(double value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(float value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(int value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(long value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override void WriteLine(Object value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (value != null && !IsWhiteSpace(value.ToString()))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(String format, Object arg0)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg0)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(String format, Object arg0, Object arg1)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg0, arg1)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(String format, params object[] arg)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
if (!IsWhiteSpace(format) && !IsWhiteSpace(String.Format(CultureInfo.CurrentCulture, format, arg)))
{
_nonWhiteSpaceWritten = true;
}
}
public override void WriteLine(UInt32 value)
{
#if UNUSED_CODE
_writeCalled = true;
#endif
_nonWhiteSpaceWritten = true;
}
public override Encoding Encoding
{
get
{
return Encoding.UTF8;
}
}
private static bool IsWhiteSpace(String s)
{
if (s == null)
{
return true;
}
for (int i = s.Length - 1; i >= 0; i--)
{
char c = s[i];
if (c != '\r' && c != '\n' && !Char.IsWhiteSpace(c))
{
return false;
}
}
return true;
}
private static bool IsWhiteSpace(char[] buffer)
{
if (buffer == null)
{
return true;
}
return IsWhiteSpace(buffer, 0, buffer.Length);
}
private static bool IsWhiteSpace(char[] buffer, int index, int count)
{
if (buffer == null)
{
return true;
}
for (int i = 0; i < count; i++)
{
char c = buffer[index + i];
if (c != '\r' && c != '\n' && !Char.IsWhiteSpace(c))
{
return false;
}
}
return true;
}
}
}
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