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Detect Encoding for In- and Outgoing Text

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27 Oct 2009Public Domain7 min read 490K   23.2K   238  
Detect the encoding of a text without BOM (Byte Order Mask) and choose the best Encoding for persistence or network transport of text
#pragma warning disable 0108

namespace MultiLanguage
{
    using System;
    using System.Runtime.CompilerServices;
    using System.Runtime.InteropServices;
    using System.Security;

    [ComImport, ComConversionLoss, InterfaceType((short) 1), Guid("DCCFC162-2B38-11D2-B7EC-00C04F8F5D9A")]
    public interface IMLangFontLink2 : IMLangCodePages
    {
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void GetCharCodePages([In] ushort chSrc, out uint pdwCodePages);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void GetStrCodePages([In] ref ushort pszSrc, [In] int cchSrc, [In] uint dwPriorityCodePages, out uint pdwCodePages, out int pcchCodePages);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void CodePageToCodePages([In] uint uCodePage, out uint pdwCodePages);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void CodePagesToCodePage([In] uint dwCodePages, [In] uint uDefaultCodePage, out uint puCodePage);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void GetFontCodePages([In, ComAliasName("MultiLanguage.wireHDC")] ref _RemotableHandle hDC, [In, ComAliasName("MultiLanguage.wireHFONT")] ref _RemotableHandle hFont, out uint pdwCodePages);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void ReleaseFont([In, ComAliasName("MultiLanguage.wireHFONT")] ref _RemotableHandle hFont);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void ResetFontMapping();
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void MapFont([In, ComAliasName("MultiLanguage.wireHDC")] ref _RemotableHandle hDC, [In] uint dwCodePages, [In] ushort chSrc, [Out, ComAliasName("MultiLanguage.wireHFONT")] IntPtr pFont);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void GetFontUnicodeRanges([In, ComAliasName("MultiLanguage.wireHDC")] ref _RemotableHandle hDC, [In, Out] ref uint puiRanges, out tagUNICODERANGE pUranges);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void GetScriptFontInfo([In] byte sid, [In] uint dwFlags, [In, Out] ref uint puiFonts, out tagSCRIPFONTINFO pScriptFont);
        [MethodImpl(MethodImplOptions.InternalCall, MethodCodeType=MethodCodeType.Runtime)]
        void CodePageToScriptID([In] uint uiCodePage, out byte pSid);
    }
}

#pragma warning restore 0108

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Written By
Software Developer (Senior)
Germany Germany
Carsten started programming Basic and Assembler back in the 80’s when he got his first C64. After switching to a x86 based system he started programming in Pascal and C. He started Windows programming with the arrival of Windows 3.0. After working for various internet companies developing a linguistic text analysis and classification software for 25hours communications he is now working as a contractor.

Carsten lives in Hamburg, Germany with his wife and five children.

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