/// <summary>
/// Constructs a new instance of <see cref="NodeV32"/>
/// </summary>
/// <param name="dataSet">
/// The data set the node is contained within
/// </param>
/// <param name="offset">
/// The offset in the data structure to the node
/// </param>
/// <param name="reader">
/// Reader connected to the source data structure and positioned to start reading
/// </param>
internal NodeV32(
DataSet dataSet,
int offset,
BinaryReader reader)
: base(dataSet, offset, reader)
{
}
/// <summary>
/// Creates a new <see cref="DataSet"/> from the byte array.
/// </summary>
/// <param name="array">Array of bytes to build the data set from</param>
/// <returns>
/// A <see cref="DataSet"/> configured to read entities from the array when required
/// </returns>
public static DataSet Create(byte[] array)
{
var dataSet = new DataSet(array, DataSet.Modes.MemoryMapped);
Load(dataSet);
return(dataSet);
}
/// <summary>
/// Creates a new <see cref="DataSet"/> from the file provided.
/// </summary>
/// <param name="filePath">Uncompressed file containing the data for the data set</param>
/// <param name="lastModified">Date and time the source data was last modified.</param>
/// <param name="isTempFile">True if the file should be deleted when the source is disposed</param>
/// <returns>
/// A <see cref="DataSet"/>configured to read entities from the file path when required
/// </returns>
public static DataSet Create(string filePath, DateTime lastModified, bool isTempFile)
{
var dataSet = new DataSet(filePath, lastModified, DataSet.Modes.File, isTempFile);
Load(dataSet);
return(dataSet);
}
/// <summary>
/// Constructs a new instance of <see cref="IntegerList"/> ready to
/// read entities from the source.
/// </summary>
/// <param name="dataSet">
/// Dataset being created.
/// </param>
/// <param name="reader">
/// Reader used to initialise the header only.
/// </param>
internal IntegerList(
DataSet dataSet,
Reader reader)
{
_header = new Header(reader);
_dataSet = dataSet;
}
/// <summary>
/// Constructs a new instance of <see cref="Node"/>
/// </summary>
/// <param name="dataSet">
/// The data set the node is contained within
/// </param>
/// <param name="offset">
/// The offset in the data structure to the node
/// </param>
/// <param name="reader">
/// Reader connected to the source data structure and positioned to start reading
/// </param>
internal Node(
DataSet dataSet,
int offset,
BinaryReader reader)
: base(dataSet, offset, reader)
{
_pool = dataSet.Pool;
_position = reader.BaseStream.Position;
}
/// <summary>
/// Constructs a new instance of the <see cref="Profile"/>.
/// </summary>
/// <param name="dataSet">
/// The data set whose profile list the profile will be contained
/// within.
/// </param>
/// <param name="offset">
/// The offset position in the data structure to the profile.
/// </param>
/// <param name="reader">
/// Reader connected to the source data structure and positioned to
/// start reading.
/// </param>
internal Profile(
DataSet dataSet,
int offset,
BinaryReader reader)
: base(dataSet, offset, reader)
{
_pool = dataSet.Pool;
_valueIndexesCount = reader.ReadInt32();
_signatureIndexesCount = reader.ReadInt32();
_position = reader.BaseStream.Position;
}
/// <summary>
/// Constructs a new instance of <see cref="NodeV31"/>.
/// </summary>
/// <param name="dataSet">
/// The data set the node is contained within.
/// </param>
/// <param name="offset">
/// The offset in the data structure to the node.
/// </param>
/// <param name="reader">
/// Reader connected to the source data structure and positioned to
/// start reading.
/// </param>
internal NodeV31(
DataSet dataSet,
int offset,
BinaryReader reader)
: base(dataSet, offset, reader)
{
_rankedSignatureCount = reader.ReadInt32();
_children = NodeFactoryShared.ReadNodeIndexesV31(
(FiftyOne.Foundation.Mobile.Detection.Entities.DataSet)dataSet,
reader,
(int)((long)offset + reader.BaseStream.Position - this._nodeStartStreamPosition),
(int)_childrenCount);
_position = reader.BaseStream.Position;
}
/// <summary>
/// Creates a new <see cref="DataSet"/> from the byte array.
/// </summary>
/// <param name="array">Array of bytes to build the data set from
/// </param>
/// <returns>
/// A <see cref="DataSet"/> configured to read entities from the array
/// when required
/// </returns>
public static DataSet Create(byte[] array)
{
var dataSet = new DataSet(array, DataSet.Modes.MemoryMapped);
Load(dataSet);
return dataSet;
}
/// <summary>
/// Initialises the dataset <see cref="DataSet"/> using the source of the data set.
/// </summary>
/// <para>
/// A <see cref="DataSet"/> is initialised using the reader to retrieve
/// entity information. The data is only loaded when required by the detection
/// process.
/// </para>
/// <param name="dataSet">A data set to be initialised ready for detection</param>
private static void Load(DataSet dataSet)
{
var reader = dataSet.Pool.GetReader();
try
{
reader.BaseStream.Position = 0;
CommonFactory.LoadHeader(dataSet, reader);
dataSet.Strings = new VariableList<AsciiString<Entities.DataSet>, DataSet>(
dataSet, reader, new StreamAsciiStringFactory(), Constants.StringsCacheSize);
MemoryFixedList<Component, Entities.DataSet> components = null;
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
components = new MemoryFixedList<Component, Entities.DataSet>(dataSet, reader, new ComponentFactoryV31());
break;
case BinaryConstants.FormatVersions.PatternV32:
components = new MemoryFixedList<Component, Entities.DataSet>(dataSet, reader, new ComponentFactoryV32());
break;
}
dataSet._components = components;
var maps = new MemoryFixedList<Map, Entities.DataSet>(dataSet, reader, new MapFactory());
dataSet._maps = maps;
var properties = new PropertiesList(dataSet, reader, new PropertyFactory());
dataSet._properties = properties;
dataSet._values = new FixedCacheList<Value, DataSet>(dataSet, reader, new ValueFactory<DataSet>(), Constants.ValuesCacheSize);
dataSet.Profiles = new VariableList<Entities.Profile, DataSet>(dataSet, reader, new ProfileStreamFactory(dataSet.Pool), Constants.ProfilesCacheSize);
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
dataSet._signatures = new FixedCacheList<Signature, DataSet>(dataSet, reader, new SignatureFactoryV31<DataSet>(dataSet), Constants.SignaturesCacheSize);
break;
case BinaryConstants.FormatVersions.PatternV32:
dataSet._signatures = new FixedCacheList<Signature, DataSet>(dataSet, reader, new SignatureFactoryV32<DataSet>(dataSet), Constants.SignaturesCacheSize);
dataSet._signatureNodeOffsets = new IntegerList(dataSet, reader);
dataSet._nodeRankedSignatureIndexes = new IntegerList(dataSet, reader);
break;
}
dataSet._rankedSignatureIndexes = new IntegerList(dataSet, reader);
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
dataSet.Nodes = new VariableList<Entities.Node, DataSet>(dataSet, reader, new NodeStreamFactoryV31(dataSet.Pool), Constants.NodesCacheSize);
break;
case BinaryConstants.FormatVersions.PatternV32:
dataSet.Nodes = new VariableList<Entities.Node, DataSet>(dataSet, reader, new NodeStreamFactoryV32(dataSet.Pool), Constants.NodesCacheSize);
break;
}
var rootNodes = new MemoryFixedList<Entities.Node, Entities.DataSet>(dataSet, reader, new RootNodeFactory());
dataSet.RootNodes = rootNodes;
var profileOffsets = new MemoryFixedList<ProfileOffset, Entities.DataSet>(dataSet, reader, new ProfileOffsetFactory());
dataSet._profileOffsets = profileOffsets;
// Read into memory all the small lists which are frequently accessed.
reader.BaseStream.Position = components.Header.StartPosition;
components.Read(reader);
reader.BaseStream.Position = maps.Header.StartPosition;
maps.Read(reader);
reader.BaseStream.Position = properties.Header.StartPosition;
properties.Read(reader);
reader.BaseStream.Position = rootNodes.Header.StartPosition;
rootNodes.Read(reader);
reader.BaseStream.Position = profileOffsets.Header.StartPosition;
profileOffsets.Read(reader);
}
finally
{
dataSet.Pool.Release(reader);
}
}
/// <summary>
/// Creates a new <see cref="DataSet"/> from the file provided.
/// </summary>
/// <param name="filePath">Uncompressed file containing the data for
/// the data set</param>
/// <param name="lastModified">Date and time the source data was last
/// modified.</param>
/// <param name="isTempFile">True if the file should be deleted when
/// the source is disposed</param>
/// <returns>
/// A <see cref="DataSet"/>configured to read entities from the file
/// path when required
/// </returns>
public static DataSet Create(string filePath, DateTime lastModified, bool isTempFile)
{
var dataSet = new DataSet(filePath, lastModified, DataSet.Modes.File, isTempFile);
Load(dataSet);
return dataSet;
}
/// <summary>
/// Initialises the dataset <see cref="DataSet"/> using the source of the data set.
/// </summary>
/// <para>
/// A <see cref="DataSet"/> is initialised using the reader to retrieve
/// entity information. The data is only loaded when required by the detection
/// process.
/// </para>
/// <param name="dataSet">A data set to be initialised ready for detection</param>
private static void Load(DataSet dataSet)
{
var reader = dataSet.Pool.GetReader();
try
{
reader.BaseStream.Position = 0;
CommonFactory.LoadHeader(dataSet, reader);
dataSet.Strings = new VariableList <AsciiString>(dataSet, reader, new AsciiStringFactory(), Constants.StringsCacheSize);
MemoryFixedList <Component> components = null;
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
components = new MemoryFixedList <Component>(dataSet, reader, new ComponentFactoryV31());
break;
case BinaryConstants.FormatVersions.PatternV32:
components = new MemoryFixedList <Component>(dataSet, reader, new ComponentFactoryV32());
break;
}
dataSet._components = components;
var maps = new MemoryFixedList <Map>(dataSet, reader, new MapFactory());
dataSet._maps = maps;
var properties = new PropertiesList(dataSet, reader, new PropertyFactory());
dataSet._properties = properties;
dataSet._values = new FixedCacheList <Value>(dataSet, reader, new ValueFactory(), Constants.ValuesCacheSize);
dataSet.Profiles = new VariableList <Entities.Profile>(dataSet, reader, new ProfileStreamFactory(dataSet.Pool), Constants.ProfilesCacheSize);
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
dataSet._signatures = new FixedCacheList <Signature>(dataSet, reader, new SignatureFactoryV31(dataSet), Constants.SignaturesCacheSize);
break;
case BinaryConstants.FormatVersions.PatternV32:
dataSet._signatures = new FixedCacheList <Signature>(dataSet, reader, new SignatureFactoryV32(dataSet), Constants.SignaturesCacheSize);
dataSet._signatureNodeOffsets = new FixedList <Integer>(dataSet, reader, new IntegerFactory());
dataSet._nodeRankedSignatureIndexes = new FixedList <Integer>(dataSet, reader, new IntegerFactory());
break;
}
dataSet._rankedSignatureIndexes = new FixedCacheList <Integer>(
dataSet, reader, new IntegerFactory(), Constants.RankedSignaturesCacheSize);
switch (dataSet.VersionEnum)
{
case BinaryConstants.FormatVersions.PatternV31:
dataSet.Nodes = new VariableList <Entities.Node>(dataSet, reader, new NodeStreamFactoryV31(dataSet.Pool), Constants.NodesCacheSize);
break;
case BinaryConstants.FormatVersions.PatternV32:
dataSet.Nodes = new VariableList <Entities.Node>(dataSet, reader, new NodeStreamFactoryV32(dataSet.Pool), Constants.NodesCacheSize);
break;
}
var rootNodes = new MemoryFixedList <Entities.Node>(dataSet, reader, new RootNodeFactory());
dataSet.RootNodes = rootNodes;
var profileOffsets = new MemoryFixedList <ProfileOffset>(dataSet, reader, new ProfileOffsetFactory());
dataSet._profileOffsets = profileOffsets;
// Read into memory all the small lists which are frequently accessed.
reader.BaseStream.Position = components.Header.StartPosition;
components.Read(reader);
reader.BaseStream.Position = maps.Header.StartPosition;
maps.Read(reader);
reader.BaseStream.Position = properties.Header.StartPosition;
properties.Read(reader);
reader.BaseStream.Position = rootNodes.Header.StartPosition;
rootNodes.Read(reader);
reader.BaseStream.Position = profileOffsets.Header.StartPosition;
profileOffsets.Read(reader);
}
finally
{
dataSet.Pool.Release(reader);
}
}