private IRdfParser GetParser(string fileName)
{
Options.DefaultTokenQueueMode = TokenQueueMode.SynchronousBufferDuringParsing;
var fileExtension = MimeTypesHelper.GetTrueFileExtension(fileName);
#if PORTABLE
bool isGZiped =
fileExtension.ToLowerInvariant().EndsWith(MimeTypesHelper.DefaultGZipExtension.ToLowerInvariant());
#else
bool isGZiped = fileExtension.EndsWith(MimeTypesHelper.DefaultGZipExtension, StringComparison.InvariantCultureIgnoreCase);
#endif
var parserDefinition = _importFormat == null
? MimeTypesHelper.GetDefinitionsByFileExtension(fileExtension).FirstOrDefault(def => def.CanParseRdf)
: MimeTypesHelper.GetDefinitionsByFileExtension(_importFormat.DefaultExtension)
.FirstOrDefault(def => def.CanParseRdf);
if (parserDefinition != null)
{
var rdfReader = parserDefinition.GetRdfParser();
if (rdfReader != null)
{
if (rdfReader is VDS.RDF.Parsing.NTriplesParser && !isGZiped)
{
// Use the Brighstar NTriples Parser
return(new NTriplesParser());
}
return(new BrightstarRdfParserAdapter(rdfReader, isGZiped));
}
}
Logging.LogWarning(BrightstarEventId.ParserWarning,
"Unable to select a parser by determining MIME type from file extension. Will default to NTriples parser.");
return(new NTriplesParser());
}
public void TestLangSpecParsing(String file)
{
this.EnsureTestData(file);
var def = MimeTypesHelper.GetDefinitionsByFileExtension(Path.GetExtension(file)).FirstOrDefault();
//MimeTypeDefinition def = MimeTypesHelper.GetDefinitions(MimeTypesHelper.GetMimeTypes(Path.GetExtension(file))).FirstOrDefault();
Assert.NotNull(def);
if (def != null)
{
if (def.CanParseRdf)
{
Graph g = new Graph();
g.LoadFromFile(file);
Assert.Equal(this._original, g);
}
else if (def.CanParseRdfDatasets)
{
TripleStore store = new TripleStore();
store.LoadFromFile(file);
Assert.Equal(this._original, store.Graphs.First());
}
}
}
private void EnsureTestData(String file)
{
if (this._original == null)
{
Graph g = new Graph();
g.Assert(g.CreateBlankNode(), g.CreateUriNode(UriFactory.Create("http://example.org/predicate")), g.CreateLiteralNode("literal", "en-123"));
g.Assert(g.CreateBlankNode(), g.CreateUriNode(UriFactory.Create("http://example.org/predicate")), g.CreateLiteralNode("literal", "en-gb-us"));
g.Assert(g.CreateBlankNode(), g.CreateUriNode(UriFactory.Create("http://example.org/predicate")), g.CreateLiteralNode("literal", "en-123-abc"));
this._original = g;
this._store = new TripleStore();
this._store.Add(this._original);
}
if (!File.Exists(file))
{
var def = MimeTypesHelper.GetDefinitionsByFileExtension(Path.GetExtension(file)).FirstOrDefault();
//MimeTypeDefinition def = MimeTypesHelper.GetDefinitions(MimeTypesHelper.GetMimeTypes(Path.GetExtension(file))).FirstOrDefault();
Assert.NotNull(def);
if (def != null)
{
Assert.True(def.CanWriteRdf || def.CanWriteRdfDatasets, "Unable to ensure test data");
if (def.CanWriteRdf)
{
this._original.SaveToFile(file);
}
else if (def.CanWriteRdfDatasets)
{
this._store.SaveToFile(file);
}
}
}
Assert.True(File.Exists(file), "Unable to ensure test data:" + Path.GetFullPath(file));
}
/// <summary>
/// Internal Helper method which does the actual loading of the Triple Store from the Resource
/// </summary>
/// <param name="handler">RDF Handler to use</param>
/// <param name="asm">Assembly to get the resource stream from</param>
/// <param name="resource">Full name of the Resource (without the Assembly Name)</param>
/// <param name="parser">Parser to use (if null will be auto-selected)</param>
private static void LoadDatasetInternal(IRdfHandler handler, Assembly asm, String resource, IStoreReader parser)
{
//Resource is in the given assembly
using (Stream s = asm.GetManifestResourceStream(resource))
{
if (s == null)
{
//Resource did not exist in this assembly
throw new RdfParseException("The Embedded Resource '" + resource + "' does not exist inside of " + GetAssemblyName(asm));
}
else
{
//Resource exists
//Do we have a predefined Parser?
if (parser != null)
{
parser.Load(handler, new StreamReader(s));
}
else
{
//Need to select a Parser or use StringParser
String ext = MimeTypesHelper.GetTrueResourceExtension(resource);
MimeTypeDefinition def = MimeTypesHelper.GetDefinitionsByFileExtension(ext).FirstOrDefault(d => d.CanParseRdfDatasets);
if (def != null)
{
//Resource has an appropriate file extension and we've found a candidate parser for it
parser = def.GetRdfDatasetParser();
parser.Load(handler, new StreamReader(s));
}
else
{
//See if the format was actually an RDF graph instead
def = MimeTypesHelper.GetDefinitionsByFileExtension(ext).FirstOrDefault(d => d.CanParseRdf);
if (def != null)
{
IRdfReader rdfParser = def.GetRdfParser();
rdfParser.Load(handler, new StreamReader(s));
}
else
{
//Resource did not have a file extension or we didn't have a parser associated with the extension
//Try using StringParser instead
String data;
using (StreamReader reader = new StreamReader(s))
{
data = reader.ReadToEnd();
#if !PORTABLE
reader.Close();
#endif
}
parser = StringParser.GetDatasetParser(data);
parser.Load(handler, new StringReader(data));
}
}
}
}
}
}
/// <summary>
/// Requests that the document auto-detect its syntax
/// </summary>
public void AutoDetectSyntax()
{
if (this._filename != null && !this._filename.Equals(String.Empty))
{
try
{
//Try filename based syntax detection
MimeTypeDefinition def = MimeTypesHelper.GetDefinitionsByFileExtension(MimeTypesHelper.GetTrueFileExtension(this._filename)).FirstOrDefault();
if (def != null)
{
this.Syntax = def.SyntaxName.GetSyntaxName();
return;
}
}
catch (RdfParserSelectionException)
{
//Ignore and use string based detection instead
}
}
//Otherwise try and use string based detection
//First take a guess at it being a SPARQL Results format
String text = this.Text;
try
{
ISparqlResultsReader resultsReader = StringParser.GetResultSetParser(text);
this.Syntax = resultsReader.GetSyntaxName();
}
catch (RdfParserSelectionException)
{
//Then see whether it may be a SPARQL query
if (text.Contains("SELECT") || text.Contains("CONSTRUCT") || text.Contains("DESCRIBE") || text.Contains("ASK"))
{
//Likely a SPARQL Query
this.Syntax = "SparqlQuery11";
}
else
{
//Then take a guess at it being a RDF format
try
{
IRdfReader rdfReader = StringParser.GetParser(text);
this.Syntax = rdfReader.GetSyntaxName();
}
catch (RdfParserSelectionException)
{
//Finally take a guess at it being a RDF Dataset format
IStoreReader datasetReader = StringParser.GetDatasetParser(text);
this.Syntax = datasetReader.GetSyntaxName();
}
}
}
}
/// <summary>
/// Runs the task
/// </summary>
/// <returns></returns>
protected override TaskResult RunTaskInternal()
{
MimeTypeDefinition def = MimeTypesHelper.GetDefinitionsByFileExtension(MimeTypesHelper.GetTrueFileExtension(this._file)).FirstOrDefault(d => d.CanWriteRdfDatasets);
if (def == null)
{
throw new RdfOutputException("Cannot Export the Store to the selected File since dotNetRDF was unable to select a writer to use based on the File Extension");
}
IStoreWriter writer = def.GetRdfDatasetWriter();
if (writer is IMultiThreadedWriter)
{
((IMultiThreadedWriter)writer).UseMultiThreadedWriting = false;
}
TripleStore store = new TripleStore();
if (writer is TriXWriter)
{
//For TriX must load all into memory and then write out all at once
foreach (Uri u in this.ListGraphs())
{
Graph g = new Graph();
this._manager.LoadGraph(g, u);
g.BaseUri = u;
store.Add(g);
this.Information = "Loading into memory prior to export, loaded " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s) so far...";
if (this.HasBeenCancelled)
{
this.Information = "Export Cancelled";
return(new TaskResult(true));
}
}
this.Information = "Exporting Data all at once, have " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s) to export...";
writer.Save(store, new StreamWriter(this._file));
this.Information = "Exported " + store.Graphs.Sum(x => x.Triples.Count) + " Triple(s) in " + store.Graphs.Count + " Graph(s)";
}
else
{
if (File.Exists(this._file))
{
File.Delete(this._file);
}
//For non-TriX formats assume it is safe to append one Graph at a time to the file
int graphCount = 0, tripleCount = 0;
foreach (Uri u in this.ListGraphs())
{
using (FileStream stream = new FileStream(this._file, FileMode.Append))
{
if (writer is IFormatterBasedWriter)
{
//Stream via a WriteThroughHandler
this.Information = "Stream Exporting Graph " + (u != null ? u.AbsoluteUri : "Default");
WriteThroughHandler handler = new WriteThroughHandler(((IFormatterBasedWriter)writer).TripleFormatterType, new StreamWriter(stream), true);
ExportProgressHandler progHandler = new ExportProgressHandler(handler, this, tripleCount);
this._manager.LoadGraph(progHandler, u);
graphCount++;
tripleCount = progHandler.TripleCount;
this.Information = "Finished Stream Exporting Graph " + (u != null ? u.AbsoluteUri : "Default") + ", exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s) so far...";
}
else
{
//Load Graph into memory
Graph g = new Graph();
g.BaseUri = u;
this.Information = "Loading Graph " + (u != null ? u.AbsoluteUri : "Default");
this._manager.LoadGraph(g, u);
g.BaseUri = u;
if (this.HasBeenCancelled)
{
stream.Close();
this.Information = "Export Cancelled, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
return(new TaskResult(true));
}
graphCount++;
tripleCount += g.Triples.Count;
//Save it
store.Add(g);
writer.Save(store, new StreamWriter(stream, def.Encoding));
store.Remove(u);
this.Information = "Exporting Data graph by graph, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s) so far...";
}
//Check for cancellation
if (this.HasBeenCancelled)
{
stream.Close();
this.Information = "Export Cancelled, exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
return(new TaskResult(true));
}
}
}
this.Information = "Exported " + tripleCount + " Triple(s) in " + graphCount + " Graph(s)";
}
return(new TaskResult(true));
}
private void LocalImportContinuation(MessageBoxResult dialogResult = MessageBoxResult.Yes)
{
try
{
if (dialogResult == MessageBoxResult.Yes)
{
var ext = MimeTypesHelper.GetTrueFileExtension(_importFileName);
bool isGZipped = ext.EndsWith(MimeTypesHelper.DefaultGZipExtension);
string lines;
var fileTypeDefinition =
MimeTypesHelper.GetDefinitionsByFileExtension(ext).FirstOrDefault(d => d.CanParseRdf);
var rdfReader = fileTypeDefinition == null ? null : fileTypeDefinition.GetRdfParser();
if (rdfReader == null || rdfReader is NTriplesParser || rdfReader is NQuadsParser)
{
// We can't determine the file type, or it is NQuads or NTriples
if (isGZipped)
{
using (var fileStream = new FileStream(_importFileName, FileMode.Open))
{
var gZipStream = new GZipStream(fileStream, CompressionMode.Decompress);
var reader = new StreamReader(gZipStream);
lines = reader.ReadToEnd();
}
}
else
{
lines = File.ReadAllText(_importFileName);
}
}
else
{
using (var textWriter = new StringWriter())
{
try
{
var nQuadsFormatter = new NQuadsFormatter();
var writeThroughHandler = new WriteThroughHandler(nQuadsFormatter, textWriter);
rdfReader.Load(writeThroughHandler, _importFileName);
lines = textWriter.ToString();
}
catch (Exception ex)
{
Messenger.Default.Send(new ShowDialogMessage(
Strings.ParseErrorTitle,
String.Format(Strings.ParseErrorDescription, _importFileName,
ex.Message),
MessageBoxImage.Error,
MessageBoxButton.OK),
"MainWindow");
return;
}
}
}
var client = BrightstarService.GetClient(Store.Source.ConnectionString);
String graphUri = !String.IsNullOrWhiteSpace(ImportGraphName)
? ImportGraphName
: Constants.DefaultGraphUri;
_transactionJob = client.ExecuteTransaction(Store.Location, String.Empty, String.Empty, lines, waitForCompletion: false, defaultGraphUri: graphUri);
_dispatcher.BeginInvoke(DispatcherPriority.SystemIdle,
new TransactionViewModel.JobMonitorDelegate(CheckJobStatus));
}
}
catch (OutOfMemoryException)
{
Messenger.Default.Send(new ShowDialogMessage(Strings.ParseErrorTitle,
Strings.ImportFileTooLarge,
MessageBoxImage.Error,
MessageBoxButton.OK), "MainWindow");
}
}
/// <summary>
/// Handles the start of requests by doing conneg wherever applicable
/// </summary>
/// <param name="sender">Sender of the Event</param>
/// <param name="e">Event Arguments</param>
void context_BeginRequest(object sender, EventArgs e)
{
HttpApplication app = sender as HttpApplication;
if (app == null)
{
return;
}
HttpContext context = app.Context;
if (context == null)
{
return;
}
if (context.Request.Url.AbsolutePath.Contains("."))
{
String actualPath = context.Request.MapPath(context.Request.Path);
if (!File.Exists(actualPath))
{
// Get the File Extension and see if it is for an RDF format
String ext = context.Request.Url.AbsolutePath.Substring(context.Request.Url.AbsolutePath.LastIndexOf("."));
switch (ext)
{
case ".aspx":
case ".asmx":
case ".ashx":
case ".axd":
// The above file extensions are special to ASP.Net and so may not actually exist as files
// so we need to ignore them for the purposes of negotiating by file extension
return;
}
try
{
List <MimeTypeDefinition> defs = MimeTypesHelper.GetDefinitionsByFileExtension(ext).ToList();
if (defs.Count == 0)
{
return;
}
context.Request.Headers["Accept"] = String.Join(",", defs.Select(d => d.CanonicalMimeType).ToArray());
String filePath = Path.GetFileNameWithoutExtension(actualPath);
if (filePath == null || filePath.Equals(String.Empty))
{
if (context.Request.Url.AbsolutePath.EndsWith(ext))
{
filePath = context.Request.Url.AbsolutePath.Substring(0, context.Request.Url.AbsolutePath.Length - ext.Length);
}
}
String query = context.Request.Url.Query;
if (query.StartsWith("?"))
{
query = query.Substring(1);
}
context.RewritePath(filePath, String.Empty, query, true);
}
catch (RdfParserSelectionException)
{
// If we get a RdfParserSelectionException we shouldn't do anything, this fixes bug CORE-94
}
}
}
}
private void btnContinue_Click(object sender, RoutedEventArgs e)
{
if (this.chkAlwaysCheckFileAssociations.IsChecked != null)
{
Properties.Settings.Default.AlwaysCheckFileAssociations = (bool)this.chkAlwaysCheckFileAssociations.IsChecked;
Properties.Settings.Default.Save();
}
//Set Associations appropriately
foreach (FileAssociationInfo info in this._associations)
{
//Ensure File Association exists in the registry
if (!info.Exists)
{
info.Create();
try
{
info.ContentType = MimeTypesHelper.GetDefinitionsByFileExtension(info.Extension).Select(m => m.CanonicalMimeType).FirstOrDefault();
}
catch
{
//Ignore error, just means we don't know the MIME type for the Extension
}
info.PerceivedType = PerceivedTypes.Text;
}
//Ensure there is always a Perceived Type and a Content Type registered
if (info.PerceivedType == PerceivedTypes.None)
{
info.PerceivedType = PerceivedTypes.Text;
}
if (info.ContentType.Equals(String.Empty))
{
try
{
var mimeType = MimeTypesHelper.GetDefinitionsByFileExtension(info.Extension).Select(x => x.CanonicalMimeType).FirstOrDefault();
info.ContentType = mimeType;
}
catch
{
//Ignore error, just means we don't know the MIME type for the Extension
}
}
//Add/Remove the association
bool addAssociation = this.IsAssociationChecked(info.Extension);
if (addAssociation)
{
info.ProgID = RegistryProgramID;
}
else if (this._currentAssociations.Contains(info.Extension))
{
//We want to remove the association to ourselves
info.ProgID = info.Extension.Substring(1) + "_auto_file";
}
//TODO: Ensure we are in the OpenWith List
}
this.Close();
}
private bool SetOptions(String[] args)
{
if (args.Length == 0 || (args.Length == 1 && args[0].Equals("-help")))
{
this.ShowUsage();
return(false);
}
//Look through the arguments to see what we've been asked to do
foreach (String arg in args)
{
if (arg.StartsWith("-hs"))
{
if (arg.Contains(':'))
{
bool hs;
if (Boolean.TryParse(arg.Substring(arg.IndexOf(':') + 1), out hs))
{
this._options.Add(new HighSpeedOption(hs));
}
else
{
this._options.Add(new HighSpeedOption(true));
}
}
else
{
this._options.Add(new HighSpeedOption(true));
}
}
else if (arg.StartsWith("-pp"))
{
if (arg.Contains(':'))
{
bool pp;
if (Boolean.TryParse(arg.Substring(arg.IndexOf(':') + 1), out pp))
{
this._options.Add(new PrettyPrintingOption(pp));
}
else
{
this._options.Add(new PrettyPrintingOption(true));
}
}
else
{
this._options.Add(new PrettyPrintingOption(true));
}
}
else if (arg.StartsWith("-c"))
{
if (arg.Contains(':'))
{
int c;
if (Int32.TryParse(arg.Substring(arg.IndexOf(':') + 1), out c))
{
this._options.Add(new CompressionLevelOption(c));
}
else
{
this._options.Add(new CompressionLevelOption(WriterCompressionLevel.Default));
}
}
else
{
this._options.Add(new CompressionLevelOption(WriterCompressionLevel.Default));
}
}
else if (arg.StartsWith("-stylesheet:"))
{
String stylesheet = arg.Substring(arg.IndexOf(':') + 1);
this._options.Add(new StylesheetOption(stylesheet));
}
else if (arg.Equals("-overwrite"))
{
this._overwrite = true;
}
else if (arg.StartsWith("-out:") || arg.StartsWith("-output:"))
{
this._outputFilename = arg.Substring(arg.IndexOf(':') + 1);
}
else if (arg.StartsWith("-format:") || arg.StartsWith("-outformat:"))
{
String format = arg.Substring(arg.IndexOf(':') + 1);
if (!format.Contains("/"))
{
try
{
foreach (var mimeType in MimeTypesHelper.GetDefinitionsByFileExtension(format).SelectMany(d => d.MimeTypes).Distinct())
{
this._outFormats.Add(mimeType);
}
}
catch
{
Console.Error.WriteLine("rdfConvert: Error: The File Extension '" + format + "' is not permissible since dotNetRDF cannot infer a MIME type from the extension");
return(false);
}
}
else
{
//Validate the MIME Type
if (!IsValidMimeType(format))
{
Console.Error.WriteLine("rdfConvert: Error: The MIME Type '" + format + "' is not permissible since dotNetRDF does not support outputting in that format");
return(false);
}
this._outFormats.Add(format);
}
}
else if (arg.StartsWith("-outext:") || arg.StartsWith("-ext:"))
{
this._outExt = arg.Substring(arg.IndexOf(':') + 1);
if (!this._outExt.StartsWith("."))
{
this._outExt = "." + this._outExt;
}
}
else if (arg.Equals("-debug"))
{
this._debug = true;
}
else if (arg.Equals("-help"))
{
//Ignore help argument if other arguments are present
}
else if (arg.Equals("-nocache"))
{
Options.UriLoaderCaching = false;
}
else if (arg.Equals("-bom"))
{
Options.UseBomForUtf8 = true;
}
else if (arg.Equals("-nobom"))
{
Options.UseBomForUtf8 = false;
}
else if (arg.Equals("-best"))
{
this._best = true;
}
else if (arg.Equals("-verbose"))
{
this._verbose = true;
}
else if (arg.Equals("-warnings"))
{
this._warnings = true;
UriLoader.Warning += this.ShowWarning;
UriLoader.StoreWarning += this.ShowWarning;
FileLoader.Warning += this.ShowWarning;
FileLoader.StoreWarning += this.ShowWarning;
}
else
{
//Anything else is treated as an input
if (arg.Contains("://"))
{
try
{
this._inputs.Add(new UriInput(new Uri(arg)));
}
catch (UriFormatException uriEx)
{
Console.Error.WriteLine("rdfConvert: Error: The Input '" + arg + "' which rdfConvert assumed to be a URI is not a valid URI - " + uriEx.Message);
return(false);
}
}
else
{
this._inputs.Add(new FileInput(arg));
}
}
}
//If there are no this._inputs then we'll abort
if (this._inputs.Count == 0)
{
Console.Error.WriteLine("rdfConvert: Abort: No Inputs were provided - please provide one/more files or URIs you wish to convert");
return(false);
}
//If there are no writers specified then we'll abort
if (this._outFormats.Count == 0)
{
if (this._inputs.Count == 1 && !this._outputFilename.Equals(String.Empty))
{
//If only 1 input and an output filename can detect the output format from that filename
this._outFormats.AddRange(MimeTypesHelper.GetDefinitionsByFileExtension(MimeTypesHelper.GetTrueFileExtension(this._outputFilename)).SelectMany(d => d.MimeTypes));
}
else
{
Console.Error.WriteLine("rdfConvert: Abort: Aborting since no output options have been specified, use either the -format:[mime/type|ext] argument to specify output format for multiple inputs of use -out:filename.ext to specify the output for a single input");
return(false);
}
}
//Ensure Output Extension (if specified) is OK
if (!this._outExt.Equals(String.Empty))
{
if (!this._outExt.StartsWith("."))
{
this._outExt = "." + this._outExt;
}
}
//If more than one input and an Output Filename be sure to strip any Extension from the Filename
if (this._inputs.Count > 1 && !this._outputFilename.Equals(String.Empty))
{
this._outputFilename = Path.GetFileNameWithoutExtension(this._outputFilename);
}
return(true);
}
