ServiceRecordUtilities.cs :  » Business-Application » 32feet.NET » InTheHand » Net » Bluetooth » C# / CSharp Open Source

Home
C# / CSharp Open Source
1.2.6.4 mono .net core
2.2.6.4 mono core
3.Aspect Oriented Frameworks
4.Bloggers
5.Build Systems
6.Business Application
7.Charting Reporting Tools
8.Chat Servers
9.Code Coverage Tools
10.Content Management Systems CMS
11.CRM ERP
12.Database
13.Development
14.Email
15.Forum
16.Game
17.GIS
18.GUI
19.IDEs
20.Installers Generators
21.Inversion of Control Dependency Injection
22.Issue Tracking
23.Logging Tools
24.Message
25.Mobile
26.Network Clients
27.Network Servers
28.Office
29.PDF
30.Persistence Frameworks
31.Portals
32.Profilers
33.Project Management
34.RSS RDF
35.Rule Engines
36.Script
37.Search Engines
38.Sound Audio
39.Source Control
40.SQL Clients
41.Template Engines
42.Testing
43.UML
44.Web Frameworks
45.Web Service
46.Web Testing
47.Wiki Engines
48.Windows Presentation Foundation
49.Workflows
50.XML Parsers
C# / C Sharp
C# / C Sharp by API
C# / CSharp Tutorial
C# / CSharp Open Source » Business Application » 32feet.NET 
32feet.NET » InTheHand » Net » Bluetooth » ServiceRecordUtilities.cs
using System;
using System.Diagnostics;

namespace InTheHand.Net.Bluetooth{

    /// <summary>
    /// Utilities method working on SDP <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/>s, for instance to
    /// produce a 'dump' of the record's contents.
    /// </summary>
    /// -
    /// <remarks>
    /// This class produces output like the following:
    /// <code>
    /// AttrId: 0x0000 -- ServiceRecordHandle
    /// UInt32: 0x0
    /// 
    /// AttrId: 0x0001 -- ServiceClassIdList
    /// ElementSequence
    ///     Uuid16: 0x1000 -- ServiceDiscoveryServer
    /// 
    /// AttrId: 0x0004 -- ProtocolDescriptorList
    /// ElementSequence
    ///     ElementSequence
    ///         Uuid16: 0x100 -- L2CapProtocol
    ///         UInt16: 0x1
    ///     ElementSequence
    ///         Uuid16: 0x1 -- SdpProtocol
    /// ( ( L2Cap, PSM=Sdp ), ( Sdp ) )
    /// 
    /// AttrId: 0x0005 -- BrowseGroupList
    /// ElementSequence
    ///     Uuid16: 0x1002 -- PublicBrowseGroup
    /// 
    /// AttrId: 0x0006 -- LanguageBaseAttributeIdList
    /// ElementSequence
    ///     UInt16: 0x656E
    ///     UInt16: 0x6A
    ///     UInt16: 0x100
    /// 
    /// AttrId: 0x0100 -- ServiceName
    /// TextString: [en] 'Service Discovery'
    /// 
    /// AttrId: 0x0101 -- ServiceDescription
    /// TextString: [en] 'Publishes services to remote devices'
    /// 
    /// AttrId: 0x0102 -- ProviderName
    /// TextString: [en] 'Microsoft'
    /// 
    /// AttrId: 0x0200 -- VersionNumberList
    /// ElementSequence
    ///     UInt16: 0x100
    /// 
    /// AttrId: 0x0201 -- ServiceDatabaseState
    /// UInt32: 0x1
    /// </code>
    /// The Service Class Id names and Attribute Id names are looked up using 
    /// <see cref="T:InTheHand.Net.Bluetooth.HackClassUuidLookup"/> and
    /// <see cref="T:InTheHand.Net.Bluetooth.MapServiceClassToAttributeIdList"/>
    /// respectively.
    /// </remarks>
    public
#if ! V1
 static
#endif
 class ServiceRecordUtilities
    {
#if V1
        private ServiceRecordUtilities() { }
#endif

        //these are defined in BluetoothProtocolType

        //HACK HackProtocolServiceMultiplexer
        internal enum HackProtocolServiceMultiplexer : short
        {
            Sdp = 1,
            Rfcomm = 3,
            Bnep = 0x0F
        }

        //HACK HackProtocolId
        internal enum HackProtocolId : short
        {
            Sdp = 1,
            Rfcomm = 3,
            Obex = 8,
            Bnep = 0x0F,
            Hidp = 0x11,
            L2Cap = 0x0100
        }

        /*
            AttrId: 0x0000
            UInt32: 0x0

            AttrId: 0x0001
            ElementSequence
                Uuid16: 0x1000

            AttrId: 0x0004
            ElementSequence
                ElementSequence
                    Uuid16: 0x100
                    UInt16: 0x1
                ElementSequence
                    Uuid16: 0x1

            AttrId: 0x0005
            ElementSequence
                Uuid16: 0x1002

            AttrId: 0x0006
            ElementSequence
                UInt16: 0x656E
                UInt16: 0x6A
                UInt16: 0x100

            AttrId: 0x0100
            _____ToBeDefined: 0x

            AttrId: 0x0101
            _____ToBeDefined: 0x

            AttrId: 0x0102
            _____ToBeDefined: 0x

            AttrId: 0x0200
            ElementSequence
                UInt16: 0x100

            AttrId: 0x0201
            UInt32: 0x1
        */

        /// <overloads>
        /// Produces a raw 'dump' of the given record, not including attribute names etc.
        /// </overloads>
        /// -
        /// <summary>
        /// Gets a string containing a raw 'dump' of the given record, not including attribute names etc.
        /// </summary>
        /// -
        /// <param name="record">A <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/> to be dumped.</param>
        /// <returns>A <see cref="T:System.String"/> containing the 'dump' text.</returns>
        /// <seealso cref="M:InTheHand.Net.Bluetooth.ServiceRecordUtilities.DumpRaw(System.IO.TextWriter,InTheHand.Net.Bluetooth.ServiceRecord)"/>
        public static String DumpRaw(ServiceRecord record)
        {
            using (System.IO.StringWriter writer = new System.IO.StringWriter(
                            System.Globalization.CultureInfo.InvariantCulture)) {
                DumpRaw(writer, record);
                writer.Close(); // close here, and to be sure to be sure also with using()
                String result = writer.ToString();
                return result;
            }
        }

        /// <summary>
        /// Produce a raw 'dump' of the given record, not including attribute names etc, to the given
        /// <see cref="T:System.IO.TextWriter"/>.
        /// </summary>
        /// <param name="writer">A <see cref="T:System.IO.TextWriter"/> where the 'dump'
        /// text is to be written.</param>
        /// <param name="record">A <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/> to be dumped.</param>
        /// <seealso cref="M:InTheHand.Net.Bluetooth.ServiceRecordUtilities.DumpRaw(InTheHand.Net.Bluetooth.ServiceRecord)"/>
        public static void DumpRaw(System.IO.TextWriter writer, ServiceRecord record)
        {
            if (writer == null) { throw new ArgumentNullException("writer"); }
            if (record == null) { throw new ArgumentNullException("record"); }
            //
            bool firstRecord = true;
            foreach (ServiceAttribute attr in record) {
                if (!firstRecord) {
                    writer.WriteLine();
                }
                // All this casting of enum values to int/underlying type is for the
                // benefit of NETCFv1, where Enum has no support for hex formatting.
                writer.WriteLine("AttrId: 0x{0:X4}", (ushort)attr.Id);
                DumpRawElement(writer, 0, attr.Value);
                firstRecord = false;
            }//for
        }

        private static void DumpRawElement(System.IO.TextWriter writer, int depth, ServiceElement elem)
        {
            WritePrefix(writer, depth);
            if (elem.ElementType == ElementType.ElementSequence
                    || elem.ElementType == ElementType.ElementAlternative) {
                writer.WriteLine("{0}", elem.ElementType);
                foreach (ServiceElement element in elem.GetValueAsElementList()) {
                    DumpRawElement(writer, depth + 1, element);
                }
            } else if (elem.ElementType == ElementType.Nil) {
                writer.WriteLine("Nil:");
            } else if (elem.ElementType == ElementType.TextString
                 || elem.ElementType == ElementType.Boolean
                 || elem.ElementType == ElementType.Url) {
                // Non-numeric types
                writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
            } else if (elem.ElementType == ElementType.Uuid128) {
                writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
            } else if (elem.ElementType == ElementType.UInt128
                                || elem.ElementType == ElementType.Int128) {
                string valueText = BitConverter.ToString((byte[])elem.Value);
                writer.WriteLine("{0}: {1}", elem.ElementType, valueText);
            } else {
                writer.WriteLine("{0}: 0x{1:X}", elem.ElementType, elem.Value);
                //{catch(?FOrmatExptn){
                //   writer.WriteLine("{0}: 0x{1}", elem.Type, elem.Value);
                //}
            }
        }

        //--------------------------------------------------------------

        /// <overloads>
        /// Produces a 'dump' of the given record, including attribute names etc.
        /// </overloads>
        /// --
        /// <summary>
        /// Gets a <see cref="T:System.String"/> containing a 'dump' of the given record, including attribute names etc.
        /// </summary>
        /// -
        /// <param name="record">A <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/> to be dumped.</param>
        /// <param name="attributeIdEnumDefiningTypes">
        /// An optional array of <see cref="T:System.Type"/> specifing a set of Ids 
        /// for the attributes contained in this record.  See the 
        /// <see cref="M:InTheHand.Net.Bluetooth.ServiceRecordUtilities.Dump(System.IO.TextWriter,InTheHand.Net.Bluetooth.ServiceRecord,System.Type[])"/> 
        /// overload for more information.
        /// </param>
        /// -
        /// <returns>A <see cref="T:System.String"/> containing the 'dump' text.</returns>
        /// -
        /// <seealso cref="M:InTheHand.Net.Bluetooth.ServiceRecordUtilities.Dump(System.IO.TextWriter,InTheHand.Net.Bluetooth.ServiceRecord,System.Type[])"/>
        public static String Dump(ServiceRecord record, params Type[] attributeIdEnumDefiningTypes)
        {
            using (System.IO.StringWriter writer = new System.IO.StringWriter(
                            System.Globalization.CultureInfo.InvariantCulture)) {
                Dump(writer, record, attributeIdEnumDefiningTypes);
                writer.Close(); // close here, and to be sure to be sure also with using()
                String result = writer.ToString();
                return result;
            }
        }

        /// <summary>
        /// Produce a 'dump' of the given record, including attribute names etc to the given
        /// <see cref="T:System.IO.TextWriter"/>.
        /// </summary>
        /// -
        /// <remarks>
        /// <para>The system has built-in a set of mappings from Service Class to 
        /// its Attribute IDs. This is supplied by the 
        /// <see cref="T:InTheHand.Net.Bluetooth.MapServiceClassToAttributeIdList"/> class,
        /// and contains the Attribute IDs defined in the base SDP specification as 
        /// well as in Bluetooth Profiles specification e.g. ObjectPushProfile, Headset,
        /// Panu, etc.
        /// If however the record being decoded is a custom one then a set of extra 
        /// Attribute Id definitions can be supplied in the 
        /// <paramref name="attributeIdEnumDefiningTypes"/> parameter.
        /// The Attribute IDs for a particular Service Class 
        /// should be defined in a static class and the set of such classes should 
        /// be passed as their <see cref="T:System.Type"/> object. e.g.
        /// <code lang="C#">
        /// static class FooAttributeId
        /// {
        ///     public const ServiceAttributeId BarName = (ServiceAttributeId)0x0300;
        /// }
        /// 
        /// &#x2026;
        ///     ServiceRecordUtilities.Dump(writer, myRecord, typeof(FooAttributeId));
        /// &#x2026;
        /// </code>
        /// </para>
        /// </remarks>
        /// -
        /// <param name="writer">A <see cref="T:System.IO.TextWriter"/> where the 'dump'
        /// text is to be written.</param>
        /// <param name="record">A <see cref="T:InTheHand.Net.Bluetooth.ServiceRecord"/> to be dumped.</param>
        /// <param name="attributeIdEnumDefiningTypes">
        /// An optional array of <see cref="T:System.Type"/> specifing a set of Ids 
        /// for the attributes contained in this record.  See the 
        /// </param>
        /// <seealso cref="M:InTheHand.Net.Bluetooth.ServiceRecordUtilities.Dump(InTheHand.Net.Bluetooth.ServiceRecord,System.Type[])"/>
        public static void Dump(System.IO.TextWriter writer, ServiceRecord record, params Type[] attributeIdEnumDefiningTypes)
        {
            if (writer == null) { throw new ArgumentNullException("writer"); }
            if (record == null) { throw new ArgumentNullException("record"); }
            //
            // ....
            // Get the AttributeIdEnumDefiningType for the services contained in the record.
            Type[] recordSpecificAttributeIdEnumDefiningTypes = GetServiceClassSpecificAttributeIdEnumDefiningType(record);
            //
            // Prepend the Universal Attribute Id definition class to the supplied list.
            Type[] allAttributeIdEnumDefiningTypes;
            allAttributeIdEnumDefiningTypes = CombineAttributeIdEnumDefiningTypes(attributeIdEnumDefiningTypes, recordSpecificAttributeIdEnumDefiningTypes);
            //
            LanguageBaseItem[] langBaseList = record.GetLanguageBaseList();
            //
            bool firstAttr = true;
            foreach (ServiceAttribute attr in record) {
                if (!firstAttr) {
                    writer.WriteLine();
                }
                ServiceAttributeId id = (ServiceAttributeId)attr.Id;
                LanguageBaseItem applicableLangBase;
                string name = AttributeIdLookup.GetName(id, allAttributeIdEnumDefiningTypes, langBaseList, out applicableLangBase);
                if (name == null) {
                    writer.WriteLine("AttrId: 0x{0:X4}", (ushort)attr.Id);
                } else {
                    writer.WriteLine("AttrId: 0x{0:X4} -- {1}", (ushort)attr.Id, name);
                }
                //----
                if (attr.Value.ElementType == ElementType.TextString) {
                    DumpString(writer, 0, attr.Value, applicableLangBase);
                } else {
                    DumpElement(writer, 0, attr.Value);
                }
                // Now print descriptive information for some cases.
                // e.g. for PDL: "( ( L2Cap ), ( Rfcomm, ChannelNumber=1 ), ( Obex ) )"
                if (id == AttributeIds.UniversalAttributeId.ProtocolDescriptorList) {
                    DumpProtocolDescriptorList(writer, 0, attr.Value);
                }
                if (id == AttributeIds.UniversalAttributeId.AdditionalProtocolDescriptorLists) {
                    DumpAdditionalProtocolDescriptorLists(writer, 0, attr.Value);
                }
                //TODO (( DumpLanguageBaseAttributeIdList, use ParseListFromElementSequence ))
                firstAttr = false;
            }//for
        }

        private static Type[] CombineAttributeIdEnumDefiningTypes(Type[] attributeIdEnumDefiningTypes, Type[] recordSpecificAttributeIdEnumDefiningTypes)
        {
            Type[] allAttributeIdEnumDefiningTypes;
            if (attributeIdEnumDefiningTypes == null) {
                attributeIdEnumDefiningTypes = new Type[0];
            }
            allAttributeIdEnumDefiningTypes = new Type[1 + attributeIdEnumDefiningTypes.Length
                + recordSpecificAttributeIdEnumDefiningTypes.Length];
            //
            allAttributeIdEnumDefiningTypes[0] = typeof(AttributeIds.UniversalAttributeId);
            attributeIdEnumDefiningTypes.CopyTo(allAttributeIdEnumDefiningTypes, 1);
            recordSpecificAttributeIdEnumDefiningTypes.CopyTo(allAttributeIdEnumDefiningTypes,
                1 + attributeIdEnumDefiningTypes.Length);
            return allAttributeIdEnumDefiningTypes;
        }

        //--------
        private static void DumpAdditionalProtocolDescriptorLists(System.IO.TextWriter writer, int depth, ServiceElement element)
        {
            System.Diagnostics.Debug.Assert(element.ElementType == ElementType.ElementSequence);
            //
            // Is a list of PDLs
            foreach (ServiceElement curList in element.GetValueAsElementList()) {
                DumpProtocolDescriptorList(writer, depth + 1, curList);
            }//foreach
        }

        private static void DumpProtocolDescriptorList(System.IO.TextWriter writer, int depth, ServiceElement element)
        {
            System.Diagnostics.Debug.Assert(element.ElementType == ElementType.ElementAlternative
                || element.ElementType == ElementType.ElementSequence);
            //
            // If passes a list of alternatives, each a protocol descriptor list,
            // then call ourselves on each list.
            if (element.ElementType == ElementType.ElementAlternative) {
                foreach (ServiceElement curStack in element.GetValueAsElementList()) {
                    DumpProtocolDescriptorListList(writer, depth + 1, curStack);
                }//foreach
                return;
            }
            //else
            DumpProtocolDescriptorListList(writer, depth, element);
        }


        private static void DumpProtocolDescriptorListList(System.IO.TextWriter writer, int depth, ServiceElement element)
        {
            // The list.
            System.Diagnostics.Debug.Assert(element.ElementType == ElementType.ElementSequence);
            WritePrefix(writer, depth);
            writer.Write("( ");
            bool firstLayer = true;
            foreach (ServiceElement layer in element.GetValueAsElementList()) {
                ServiceElement[] items = layer.GetValueAsElementArray();
                int used = 0;
                System.Diagnostics.Debug.Assert(items[used].ElementTypeDescriptor == ElementTypeDescriptor.Uuid);
                Guid protoGuid = items[used].GetValueAsUuid();
                String protoStr;
                HackProtocolId proto = GuidToHackProtocolId(protoGuid, out protoStr);
                //
                used++;
                writer.Write("{0}( {1}", (firstLayer ? string.Empty : ", "), protoStr);
                if (proto == HackProtocolId.L2Cap) {
                    if (used < items.Length) {
                        System.Diagnostics.Debug.Assert(items[used].ElementType == ElementType.UInt16);
                        UInt16 u16 = (UInt16)items[used].Value;
                        HackProtocolServiceMultiplexer psm = unchecked((HackProtocolServiceMultiplexer)u16);
                        used++;
                        writer.Write(", PSM={0}", Enum_ToStringNameOrHex(psm));
                    }
                } else if (proto == HackProtocolId.Rfcomm) {
                    if (used < items.Length) {
                        System.Diagnostics.Debug.Assert(items[used].ElementType == ElementType.UInt8);
                        byte channelNumber = (byte)items[used].Value;
                        used++;
                        writer.Write(", ChannelNumber={0}", channelNumber);
                    }
                }
                // Others include BNEP for instance, which isn't defined in the base SDP spec.
                if (used < items.Length) {
                    writer.Write(", ...");
                }
                writer.Write(" )");
                firstLayer = false;
            }//foreach layer
            writer.WriteLine(" )");
        }

        private static String Enum_ToStringNameOrHex(Enum value) //NoWorkee--<T>...where T : Enum
        {
            // Which of these is best?
            //if (Enum.IsDefined(value.GetType(), value)) {
            //    return value.ToString();
            //} else {
            //    return String.Format("0x{0:X}", value);
            //}
            ////--
            //String name = Enum.GetName(value.GetType(), value);
            //if (name != null) {
            //    return name;
            //}
            //return String.Format("0x{0:X}", value);
            //--
            String text = value.ToString();
            if (HackIsNumeric(text)) { // No int.TryParse (etc) on CF!
                // All this casting of enum values to int/underlying type is for the
                // benefit of NETCFv1, where Enum has no support for hex formatting.
                Type u = Enum.GetUnderlyingType(value.GetType());
                object asUnderlyingNumber = ((IConvertible)value).ToType(u, null);
                text = String.Format(System.Globalization.CultureInfo.InvariantCulture, "0x{0:X}", asUnderlyingNumber);
            }
            return text;
        }

        private static bool HackIsNumeric(String text)
        {
            return Char.IsDigit(text[0]) || text[0] == '-';
        }

        //--------
        /// <summary>
        /// Attempt to get the name of the protocol,
        /// and optionally it's enum id if we handle it specially.
        /// </summary>
        /// -
        /// <param name="protocolGuid">The input.
        /// </param>
        /// <param name="protoStr">The protocol's name if known, or its
        /// Guid.ToString if not.
        /// We handle some explicitly, and otherwise we see if there's a
        /// matching value in BluetoothService that has its name suffixed "Protocol".
        /// </param>
        /// -
        /// <returns>The id as a <see cref="T:InTheHand.Net.Bluetooth.ServiceRecordUtilities.HackProtocolId"/>.
        /// We handle some explicitly,
        /// otherwise we see if its a UUID16 and convert it automatically,
        /// finally if neither we return <c>zero</c>.
        /// </returns>
        private static HackProtocolId GuidToHackProtocolId(Guid protocolGuid, out string protoStr)
        {
            HackProtocolId? proto = null;
            if (protocolGuid == BluetoothService.BnepProtocol) {
                proto = HackProtocolId.Bnep;
                //else if (protocolGuid == BluetoothService.hid......)
                // Missing to test automatic uint16->HackProtocolId covnersion
                //    return HackProtocolId.Hidp;
            } else if (protocolGuid == BluetoothService.L2CapProtocol) {
                proto = HackProtocolId.L2Cap;
            } else if (protocolGuid == BluetoothService.ObexProtocol) {
                proto = HackProtocolId.Obex;
            } else if (protocolGuid == BluetoothService.RFCommProtocol) {
                proto = HackProtocolId.Rfcomm;
            } else if (protocolGuid == BluetoothService.SdpProtocol) {
                proto = HackProtocolId.Sdp;
            }
            if (proto.HasValue) {
                protoStr = proto.ToString();
                return proto.Value;
            }
            //
            // Slower ways of picking up the rest.
            // Get HackProtocolId and string name separately.
            if (IsUuid16Value(protocolGuid))
                proto = GetAsUuid16Value(protocolGuid);
            else
                proto = 0;
            //
            if (Enum.IsDefined(typeof(HackProtocolId), proto)) {
                protoStr = Enum_ToStringNameOrHex(proto);
            } else {
                string nameAttempt = BluetoothService.GetName(protocolGuid);
                const string ProtocolSuffix = "Protocol";
                if (nameAttempt != null && nameAttempt.EndsWith(ProtocolSuffix, StringComparison.Ordinal)) {
                    // Has a known name
                    Debug.Assert(nameAttempt.Length > 0);
                    Debug.Assert(nameAttempt.Length > ProtocolSuffix.Length);
                    // (Two param version required for NETCF).
                    protoStr = nameAttempt.Remove(nameAttempt.Length - ProtocolSuffix.Length, ProtocolSuffix.Length);
                } else if (proto != 0) { // Conver the integer to hex
                    protoStr = Enum_ToStringNameOrHex(proto);
                } else { // Not a standard Bluetooth value so dump its UUID
                    protoStr = protocolGuid.ToString();
                }
            }
            return proto.Value;
        }

        internal static HackProtocolId GetAsUuid16Value(Guid protocolGuid) //BluetoothGuidHelper.
        {
            if (!IsUuid16Value(protocolGuid))
                throw new ArgumentException("Guid is not a Bluetooth UUID.");
            byte[] bytes = protocolGuid.ToByteArray();
            Int32 i32 = BitConverter.ToInt32(bytes, 0);
            System.Diagnostics.Debug.Assert(i32 > 0, "Int32 conversion is negative!");
            System.Diagnostics.Debug.Assert(i32 < (int)UInt16.MaxValue + 1, "Int32 conversion is in UInt32 range.");
            UInt16 u16 = checked((UInt16)i32);
            Int16 i16 = unchecked((Int16)u16);
            HackProtocolId pid = (HackProtocolId)i16;
            return pid;
        }

        internal static bool IsUuid16Value(Guid protocolGuid)
        {
            byte[] bytes = protocolGuid.ToByteArray();
            bytes[0] = bytes[1] = 0;
            Guid copyWithZeros = new Guid(bytes);
            return copyWithZeros.Equals(BluetoothService.BluetoothBase);
        }

        internal static bool IsUuid32Value(Guid protocolGuid)
        {
            byte[] bytes = protocolGuid.ToByteArray();
            bytes[0] = bytes[1] = bytes[2] = bytes[3] = 0;
            Guid copyWithZeros = new Guid(bytes);
            return copyWithZeros.Equals(BluetoothService.BluetoothBase);
        }

        internal static UInt32 GetAsUuid32Value(Guid protocolGuid) //BluetoothGuidHelper.
        {
            if (!IsUuid32Value(protocolGuid))
                throw new ArgumentException("Guid is not a Bluetooth UUID.");
            byte[] bytes = protocolGuid.ToByteArray();
            UInt32 u32 = BitConverter.ToUInt32(bytes, 0);
            return u32;
        }

        //--------
#if CODE_ANALYSIS
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA1801:ReviewUnusedParameters", MessageId = "depth", Justification = "consistency with peers")]
#endif
        private static void DumpString(System.IO.TextWriter writer, int depth, ServiceElement element, LanguageBaseItem langBase)
        {
            if (langBase != null) {
                try {
                    String value = element.GetValueAsString(langBase);
                    writer.WriteLine("{0}: [{1}] '{2}'", element.ElementType, langBase.NaturalLanguage, value);
                } catch (NotSupportedException ex) {
                    System.Diagnostics.Debug.Assert(ex.Message != null);
                    System.Diagnostics.Debug.Assert(ex.Message.StartsWith("Unrecognized character encoding"));
                    writer.WriteLine("{0}: Failure: {1}", element.ElementType, ex.Message);
                }
            } else {
                try {
                    String hack = element.GetValueAsStringUtf8();
                    if (hack.IndexOf((char)0) != -1) {
                        throw new
#if ! WinCE
 System.Text.DecoderFallbackException
#else
                            // NETCF doesn't support DecoderFallbackException this what the docs say.
                            ArgumentException
#endif
("EEEEE contains nulls!  UTF-16?!");
                    }
                    writer.WriteLine("{0} (guessing UTF-8): '{1}'", element.ElementType, hack);
                } catch (
                    // TODO ! What exception thrown by UTF8Encoding on NETCF?
#if ! WinCE
                    System.Text.DecoderFallbackException
#else
                    // NETCF doesn't support DecoderFallbackException this what the docs say.
                    ArgumentException
#endif
) {
                    writer.WriteLine("{0} (Unknown/bad encoding):", element.ElementType);
                }//try
            }
        }

        private static void DumpElement(System.IO.TextWriter writer, int depth, ServiceElement elem)
        {
            WritePrefix(writer, depth);
            if (elem.ElementType == ElementType.ElementSequence || elem.ElementType == ElementType.ElementAlternative) {
                writer.WriteLine("{0}", elem.ElementType);
                foreach (ServiceElement element in elem.GetValueAsElementList()) {
                    DumpElement(writer, depth + 1, element);
                }//for
            } else if (elem.ElementType == ElementType.Nil) {
                writer.WriteLine("Nil:");
            } else if (elem.ElementType == ElementType.TextString) {
                DumpString(writer, depth + 1, elem, null);
            } else if (elem.ElementType == ElementType.Boolean
                  || elem.ElementType == ElementType.Url) {
                // Non-numeric types
                writer.WriteLine("{0}: {1}", elem.ElementType, elem.Value);
            } else {
                String name = null;
                String valueText = null;
                if (elem.ElementTypeDescriptor == ElementTypeDescriptor.Uuid) {
                    if (elem.ElementType == ElementType.Uuid16) {
                        name = BluetoothService.GetName((UInt16)elem.Value);
                    } else if (elem.ElementType == ElementType.Uuid32) {
                        name = BluetoothService.GetName((UInt32)elem.Value);
                    } else {
                        System.Diagnostics.Debug.Assert(elem.ElementType == ElementType.Uuid128);
                        name = BluetoothService.GetName((Guid)elem.Value);
                        valueText = ((Guid)elem.Value).ToString();
                    }
                }//if UUID
                if (valueText == null) {
                    if (elem.ElementTypeDescriptor == ElementTypeDescriptor.Unknown) {
                        valueText = "unknown";
                    } else if (elem.ElementType == ElementType.UInt128
                                || elem.ElementType == ElementType.Int128) {
                        valueText = BitConverter.ToString((byte[])elem.Value);
                    } else {
                        valueText = String.Format(System.Globalization.CultureInfo.InvariantCulture, "0x{0:X}", elem.Value);
                    }
                }
                if (name == null) {
                    writer.WriteLine("{0}: {1}", elem.ElementType, valueText);
                } else {
                    writer.WriteLine("{0}: {1} -- {2}", elem.ElementType, valueText, name);
                }
            }//else
        }


        //--------------------------------------------------------------

        private static Type[] GetServiceClassSpecificAttributeIdEnumDefiningType(ServiceRecord record)
        {
            MapServiceClassToAttributeIdList instance = new MapServiceClassToAttributeIdList();
            return instance.GetAttributeIdEnumTypes(record);
        }

        //--------------------------------------------------------------

        static char[] s_lotsOfSpaces = new String(' ', 100).ToCharArray();
        private static void WritePrefix(System.IO.TextWriter writer, int depth)
        {
            const int StepSize = 4;
            int count = depth * StepSize;
            count = Math.Min(count, s_lotsOfSpaces.Length);
            writer.Write(s_lotsOfSpaces, 0, count);
        }

    }//class

}
www.java2v.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.