SUPPRIMER LES TAG BOM DANS FICHIER UTF-8

/*
 * Created by SharpDevelop.
 * User: hidalgo emmanuel
 * Date: 24/04/2008
 * Time: 12:20
 * 
 * To change this template use Tools | Options | Coding | Edit Standard Headers.
 */

using System;
using System.IO;
using System.Collections;

namespace delete_tag_utf8_bom_win
{
	/// <summary>
	/// Description of ScanUtf8Bom.
	/// </summary>
	public class ScanUtf8Bom
	{
		public string sLogFichiers = "";
		private string[] _oExtension;
		
		public ScanUtf8Bom( string[] oExtensions ){
			this._oExtension = oExtensions;
		}
		
		public void ScanFolder( DirectoryInfo oDirectory ){
			foreach( FileInfo oFileInfo in oDirectory.GetFiles() ){
				string sExtension = oFileInfo.Extension;
				if( sExtension.Length > 1 && sExtension.Substring( 0, 1 ) == "." )
					sExtension = sExtension.Substring( 1 );
				string sOkExtension = Array.Find( this._oExtension, delegate ( string sExt ) { return sExt == sExtension; } );
				if( sOkExtension != null && this.FileIsBOM( oFileInfo.FullName ) )
					this.DeleteTagBom( oFileInfo.FullName );
			}
			foreach( DirectoryInfo oDirectoryChild in oDirectory.GetDirectories() )
				if( oDirectoryChild.Name != ".svn" )
					this.ScanFolder( oDirectoryChild );
		}
		
		public bool FileIsBOM( string sFile ){
			byte[] oData = new Byte[ 3 ];
			byte[] oBom = new Byte[ 3 ];
			oBom[ 0 ] = 239;// -> i
			oBom[ 1 ] = 187;// -> »
			oBom[ 2 ] = 191;// -> ¿
			
			FileStream oFileStream = new FileStream( sFile, FileMode.Open );
			oFileStream.Read( oData, 0, 3 );
			
			for( int i = 0; i < oData.Length; i++ )
				if( oData[ i ] != oBom[ i ] )
					return false;
			
			oFileStream.Close();
			
			return true;
		}
		
		public void DeleteTagBom( string sFile ){
			this.sLogFichiers += "delete tag in : " + sFile + "\r\n";
			
			FileInfo oFileInfo = new FileInfo( sFile );
			byte[] oData = new byte[ oFileInfo.Length ];
			
			FileStream oFileStream = new FileStream( sFile, FileMode.Open );
			oFileStream.Read( oData, 0, (int)oFileInfo.Length );
			oFileStream.Close();
			
			File.Delete( sFile );
			
			oFileStream = new FileStream( sFile, FileMode.Create );
			oFileStream.Write( oData, 3, oData.Length - 3 );
			oFileStream.Close();
		}
	}
}