/// <summary>
/// Determines whether a given String is a valid Plain Literal for the given Datatype.
/// </summary>
/// <param name="value">Value.</param>
/// <param name="dt">Datatype.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsValidPlainLiteral(String value, Uri dt, TurtleSyntax syntax)
{
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if ((value.Equals("true", comparison) || value.Equals("false", comparison)) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeBoolean))
{
return(true);
}
else if (_validDecimal.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeDecimal))
{
return(true);
}
else if (_validInteger.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeInteger))
{
return(true);
}
else if (_validDouble.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeDouble))
{
return(true);
}
else
{
return(false);
}
}
/// <summary>
/// Gets whether the given value is a valid prefix in Turtle.
/// </summary>
/// <param name="value">Value.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsValidPrefix(String value, TurtleSyntax syntax)
{
// W3C Standard Turtle
// PNAME_NS ::= PN_PREFIX? ':'
// Original Member Submission Turtle
// qname ::= prefixName? ':' name?
// The productions are identical for our purposes
if (value.Equals(String.Empty))
{
return(false);
}
if (!value.EndsWith(":"))
{
return(false);
}
if (value.Equals(":"))
{
return(true);
}
// IsPNPrefix() implements the appropriate productions for the different syntaxes
return(IsPNPrefix(value.Substring(0, value.Length - 1), syntax));
}
/// <summary>
/// Infers the Type of a Plain Literal.
/// </summary>
/// <param name="p">Plain Literal to infer the Type of.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns>A Uri representing the XML Scheme Data Type for the Plain Literal.</returns>
public static Uri InferPlainLiteralType(PlainLiteralToken p, TurtleSyntax syntax)
{
String value = p.Value;
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if (value.Equals("true", comparison) || value.Equals("false", comparison))
{
// Is a Boolean
return(UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeBoolean));
}
else if (_validInteger.IsMatch(value))
{
// Is an Integer
return(UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeInteger));
}
else if (_validDecimal.IsMatch(value))
{
// Is a Decimal
return(UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeDecimal));
}
else if (_validDouble.IsMatch(value))
{
// Is a Double
return(UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeDouble));
}
else
{
throw new RdfParseException("Unable to automatically Infer a Type for this PlainLiteralToken. Plain Literals may only be Booleans, Integers, Decimals or Doubles");
}
}
/// <summary>
/// Determines whether a given String is a valid QName.
/// </summary>
/// <param name="value">String to test.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsValidQName(String value, TurtleSyntax syntax)
{
if (!value.Contains(":"))
{
return(false);
}
String prefix = value.Substring(0, value.IndexOf(':') + 1);
String lname = prefix.Length < value.Length ? value.Substring(prefix.Length) : String.Empty;
return(IsValidPrefix(prefix, syntax) && IsValidLocalName(lname, syntax));
}
/// <summary>
/// Determines whether a given String is a valid Plain Literal.
/// </summary>
/// <param name="value">String to test.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsValidPlainLiteral(String value, TurtleSyntax syntax)
{
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if (value.Equals("true", comparison) || value.Equals("false", comparison))
{
return(true);
}
else
{
return(_validDecimal.IsMatch(value) || _validInteger.IsMatch(value) || _validDouble.IsMatch(value));
}
}
/// <summary>
/// Creates a new compressing Turtle writer using the given syntax level
/// </summary>
/// <param name="syntax">Syntax Level</param>
public CompressingTurtleWriter(TurtleSyntax syntax)
{
this._syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="compressionLevel">Compression Level to use</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriterContext(IGraph g, TextWriter output, int compressionLevel, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: base(g, output, compressionLevel, prettyPrint, hiSpeed)
{
this._formatter = (syntax == TurtleSyntax.Original ? new TurtleFormatter(g) : new TurtleW3CFormatter(g));
this._uriFormatter = (IUriFormatter)this._formatter;
}
/// <summary>
/// Creates a new Turtle Writer Context with default settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriterContext(IGraph g, TextWriter output, TurtleSyntax syntax)
: this(g, output, Options.DefaultCompressionLevel, true, true, syntax)
{
}
/// <summary>
/// Creates a new Turtle Parser which uses the given Token Queue Mode.
/// </summary>
/// <param name="queueMode">Queue Mode for Turtle.</param>
/// <param name="syntax">Turtle Syntax.</param>
public TurtleParser(TokenQueueMode queueMode, TurtleSyntax syntax)
: this(syntax)
{
_queueMode = queueMode;
}
/// <summary>
/// Creates a new Turtle Parser Context with default settings
/// </summary>
/// <param name="handler">RDF Handler</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleParserContext(IRdfHandler handler, ITokeniser tokeniser, TurtleSyntax syntax)
: this(handler, tokeniser, syntax, TokenQueueMode.SynchronousBufferDuringParsing, false, false)
{
}
/// <summary>
/// Creates a new Turtle Parser Context with custom settings
/// </summary>
/// <param name="g">Graph to parse into</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
/// <param name="traceParsing">Whether to trace parsing</param>
/// <param name="traceTokeniser">Whether to trace tokenisation</param>
public TurtleParserContext(IGraph g, ITokeniser tokeniser, TurtleSyntax syntax, bool traceParsing, bool traceTokeniser)
: this(g, tokeniser, syntax, TokenQueueMode.SynchronousBufferDuringParsing, traceParsing, traceTokeniser)
{
}
/// <summary>
/// Creates a new Turtle Parser Context with default settings
/// </summary>
/// <param name="g">Graph to parse into</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleParserContext(IGraph g, ITokeniser tokeniser, TurtleSyntax syntax)
: this(g, tokeniser, syntax, TokenQueueMode.SynchronousBufferDuringParsing, false, false)
{
}
/// <summary>
/// Creates a new Turtle Parser which uses the given Token Queue Mode
/// </summary>
/// <param name="queueMode">Queue Mode for Tokenising</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleParser(TokenQueueMode queueMode, TurtleSyntax syntax)
: this(syntax)
{
this._queueMode = queueMode;
}
/// <summary>
/// Creates a new Turtle Parser
/// </summary>
/// <param name="syntax">Turtle Syntax</param>
public TurtleParser(TurtleSyntax syntax)
{
this._syntax = syntax;
}
/// <summary>
/// Determines whether a given String is a valid QName
/// </summary>
/// <param name="value">String to test</param>
/// <param name="syntax">Turtle Syntax</param>
/// <returns></returns>
public static bool IsValidQName(String value, TurtleSyntax syntax)
{
if (value.Contains(':'))
{
String ns, localname;
ns = value.Substring(0, value.IndexOf(':'));
localname = value.Substring(value.IndexOf(':') + 1);
//Namespace Validation
if (!ns.Equals(String.Empty))
{
//Allowed empty Namespace
if (ns.StartsWith("-") || ns.StartsWith("."))
{
//Can't start with a - or .
return false;
}
else
{
char[] nchars = ns.ToCharArray();
if (IsPNCharsBase(nchars[0]))
{
if (nchars.Length > 1)
{
for (int i = 1; i < nchars.Length; i++)
{
//Check if valid Name Char
//The . character is not allowed in original Turtle but is permitted in new Turtle
if (!IsPNChars(nchars[i]) || (nchars[i] == '.' && syntax == TurtleSyntax.Original)) return false;
}
//If we reach here the Namespace is OK
}
else
{
//Only 1 Character which was valid so OK
}
}
else
{
//Doesn't start with a valid Name Start Char
return false;
}
}
}
//Local Name Validation
if (!localname.Equals(String.Empty))
{
//Allowed empty Local Name
char[] lchars = localname.ToCharArray();
if (IsPNCharsU(lchars[0]) || (Char.IsDigit(lchars[0]) && syntax == TurtleSyntax.W3C))
{
if (lchars.Length > 1)
{
for (int i = 1; i < lchars.Length; i++)
{
//Check if valid Name Char
//The . character is not allowed in original Turtle but is permitted in new Turtle
if (!IsPNChars(lchars[i]) || (lchars[i] == '.' && syntax == TurtleSyntax.Original)) return false;
}
//If we reach here the Local Name is OK
}
else
{
//Only 1 Character which was valid so OK
}
}
else
{
//Not a valid Name Start Char
return false;
}
}
//If we reach here then it's all valid
return true;
}
else
{
//Must contain a colon
return false;
}
}
/// <summary>
/// Determines whether a given String is a valid Plain Literal for the given Datatype
/// </summary>
/// <param name="value">Value</param>
/// <param name="dt">Datatype</param>
/// <param name="syntax">Turtle Syntax</param>
/// <returns></returns>
public static bool IsValidPlainLiteral(String value, Uri dt, TurtleSyntax syntax)
{
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if ((value.Equals("true", comparison) || value.Equals("false", comparison)) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeBoolean))
{
return true;
}
else if (_validDecimal.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeDecimal))
{
return true;
}
else if (_validInteger.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeInteger))
{
return true;
}
else if (_validDouble.IsMatch(value) && dt.ToSafeString().Equals(XmlSpecsHelper.XmlSchemaDataTypeDouble))
{
return true;
}
else
{
return false;
}
}
/// <summary>
/// Determines whether a given String is a valid Plain Literal
/// </summary>
/// <param name="value">String to test</param>
/// <param name="syntax">Turtle Syntax</param>
/// <returns></returns>
public static bool IsValidPlainLiteral(String value, TurtleSyntax syntax)
{
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if (value.Equals("true", comparison) || value.Equals("false", comparison))
{
return true;
}
else
{
return (_validDecimal.IsMatch(value) || _validInteger.IsMatch(value) || _validDouble.IsMatch(value));
}
}
/// <summary>
/// Infers the Type of a Plain Literal
/// </summary>
/// <param name="p">Plain Literal to infer the Type of</param>
/// <param name="syntax">Turtle Syntax</param>
/// <returns>A Uri representing the XML Scheme Data Type for the Plain Literal</returns>
public static Uri InferPlainLiteralType(PlainLiteralToken p, TurtleSyntax syntax)
{
String value = p.Value;
StringComparison comparison = (syntax == TurtleSyntax.Original ? StringComparison.Ordinal : StringComparison.OrdinalIgnoreCase);
if (value.Equals("true", comparison) || value.Equals("false", comparison))
{
//Is a Boolean
return UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeBoolean);
}
else if (_validInteger.IsMatch(value))
{
//Is an Integer
return UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeInteger);
}
else if (_validDecimal.IsMatch(value))
{
//Is a Decimal
return UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeDecimal);
}
else if (_validDouble.IsMatch(value))
{
//Is a Double
return UriFactory.Create(XmlSpecsHelper.XmlSchemaDataTypeDouble);
}
else
{
throw new RdfParseException("Unable to automatically Infer a Type for this PlainLiteralToken. Plain Literals may only be Booleans, Integers, Decimals or Doubles");
}
}
/// <summary>
/// Creates a new Turtle Tokeniser
/// </summary>
/// <param name="input">The Input Stream to generate Tokens from</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleTokeniser(StreamReader input, TurtleSyntax syntax)
: this(BlockingTextReader.Create(input), syntax)
{
}
/// <summary>
/// Creates a new Turtle Tokeniser
/// </summary>
/// <param name="input">The Input Stream to generate Tokens from</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleTokeniser(BlockingTextReader input, TurtleSyntax syntax)
: base(input)
{
this._in = input;
this.Format = "Turtle";
this._syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Parser Context with custom settings
/// </summary>
/// <param name="handler">RDF Handler</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
/// <param name="queueMode">Tokeniser Queue Mode</param>
public TurtleParserContext(IRdfHandler handler, ITokeniser tokeniser, TurtleSyntax syntax, TokenQueueMode queueMode)
: this(handler, tokeniser, syntax, queueMode, false, false)
{
}
/// <summary>
/// Creates a new Turtle Writer Context with default settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="syntax">Turtle Syntax</param>
public CompressingTurtleWriterContext(IGraph g, TextWriter output, TurtleSyntax syntax)
: this(g, output, Options.DefaultCompressionLevel, true, true, syntax)
{
}
/// <summary>
/// Creates a new Turtle Parser Context with custom settings
/// </summary>
/// <param name="g">Graph to parse into</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
/// <param name="queueMode">Tokeniser Queue Mode</param>
public TurtleParserContext(IGraph g, ITokeniser tokeniser, TurtleSyntax syntax, TokenQueueMode queueMode)
: this(g, tokeniser, syntax, queueMode, false, false)
{
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="compressionLevel">Compression Level to use</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriterContext(IGraph g, TextWriter output, int compressionLevel, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: base(g, output, compressionLevel, prettyPrint, hiSpeed)
{
this._formatter = (syntax == TurtleSyntax.Original ? new TurtleFormatter(g) : new TurtleW3CFormatter(g));
this._uriFormatter = (IUriFormatter)this._formatter;
}
/// <summary>
/// Creates a new Turtle Parser Context with custom settings
/// </summary>
/// <param name="g">Graph to parse into</param>
/// <param name="tokeniser">Tokeniser to use</param>
/// <param name="syntax">Turtle Syntax</param>
/// <param name="queueMode">Tokeniser Queue Mode</param>
/// <param name="traceParsing">Whether to trace parsing</param>
/// <param name="traceTokeniser">Whether to trace tokenisation</param>
public TurtleParserContext(IGraph g, ITokeniser tokeniser, TurtleSyntax syntax, TokenQueueMode queueMode, bool traceParsing, bool traceTokeniser)
: base(g, tokeniser, queueMode, traceParsing, traceTokeniser)
{
this._syntax = syntax;
}
/// <summary>
/// Gets whether the given value is the valid prefix portion of a prefixed name in Turtle.
/// </summary>
/// <param name="value">Value.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsPNPrefix(String value, TurtleSyntax syntax)
{
char[] cs = value.ToCharArray();
int start = 1;
switch (syntax)
{
case TurtleSyntax.W3C:
// PN_PREFIX ::= PN_CHARS_BASE ((PN_CHARS | '.')* PN_CHARS)?
if (cs.Length == 0)
{
return(true);
}
// First character must be in PN_CHARS_BASE
if (!IsPNCharsBase(cs[0]))
{
// Handle surrogate pairs for UTF-32 characters
if (UnicodeSpecsHelper.IsHighSurrogate(cs[0]) && cs.Length > 1)
{
if (!IsPNCharsBase(cs[0], cs[1]))
{
return(false);
}
start++;
}
else
{
return(false);
}
}
if (cs.Length == start)
{
return(true);
}
// Intermediate characters must be a '.' or in PN_CHARS
for (int i = start; i < cs.Length - 1; i++)
{
if (cs[i] != '.' && !IsPNChars(cs[i]))
{
// Handle surrogate pairs for UTF-32 characters
if (UnicodeSpecsHelper.IsHighSurrogate(cs[i]) && i < cs.Length - 2)
{
if (!IsPNChars(cs[i], cs[i + 1]))
{
return(false);
}
i++;
}
else if (UnicodeSpecsHelper.IsHighSurrogate(cs[i]) && i == cs.Length - 2)
{
// This case handles the case where the final character is a UTF-32 character representing by a surrogate pair
return(IsPNChars(cs[i], cs[i + 1]));
}
else
{
return(false);
}
}
}
// Final character must be in PN_CHARS
return(IsPNChars(cs[cs.Length - 1]));
default:
// prefixName ::= ( nameStartChar - '_' ) nameChar*
if (cs.Length == 0)
{
return(true);
}
// First character must be a name start char and not a _
if (!IsNameStartChar(cs[0]) || cs[0] == '_')
{
// Handle surrogate pairs for UTF-32
if (UnicodeSpecsHelper.IsHighSurrogate(cs[0]) && cs.Length > 1)
{
if (!IsNameStartChar(cs[0], cs[1]))
{
return(false);
}
start++;
}
else
{
return(false);
}
}
if (cs.Length == start)
{
return(true);
}
// Subsequent characters must be in nameChar
for (int i = start; i < cs.Length; i++)
{
if (!IsNameChar(cs[i]))
{
// Handle surrogate pairs for UTF-32
if (UnicodeSpecsHelper.IsHighSurrogate(cs[i]) && i < cs.Length - 1)
{
if (!IsNameChar(cs[i], cs[i + 1]))
{
return(false);
}
i++;
}
else
{
return(false);
}
}
}
return(true);
}
}
/// <summary>
/// Creates a new Turtle Parser.
/// </summary>
/// <param name="syntax">Turtle Syntax.</param>
public TurtleParser(TurtleSyntax syntax)
{
_syntax = syntax;
}
/// <summary>
/// Gets whether the given value is the valid local name portion of a prefixed name in Turtle.
/// </summary>
/// <param name="value">Value.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <returns></returns>
public static bool IsValidLocalName(String value, TurtleSyntax syntax)
{
char[] cs = value.ToCharArray();
// Empty local names are valid
if (cs.Length == 0)
{
return(true);
}
switch (syntax)
{
case TurtleSyntax.W3C:
// PNAME_LN ::= PNAME_NS PN_LOCAL
// PNAME_NS ::= PN_PREFIX? ':'
// Local name is a syntax of namespace segments
String[] portions = value.Split(':');
// Each non-final portion conforms to the PNAME_NS production
// This is a PN_PREFIX followed by a ':' so we can call IsPNPrefix() directly
// However we have to be careful because the final portion can contain bare : which we already split on
int p;
for (p = 0; p < portions.Length - 1; p++)
{
if (portions[p].Length == 0)
{
continue;
}
// If we see any of the escape sequence starters or a leading digit then this must be the start of the local name
if (portions[p].Contains("%") || portions[p].Contains("\\") || Char.IsDigit(portions[p][0]))
{
break;
}
// Otherwise must be a valid prefix
if (!IsPNPrefix(portions[p], syntax))
{
return(false);
}
}
String final = portions[portions.Length - 1];
if (p < portions.Length - 1)
{
final = String.Join(":", portions, p, portions.Length - p);
}
// Final portion may be empty which is valid because a portion may consist solely of a : which would result in this scenario
if (final.Length == 0)
{
return(true);
}
// Final portion conforms to PN_LOCAL
return(IsPNLocal(final));
default:
// name ::= nameStartChar nameChar*
int start = 1;
// Validate first character is a nameStartChar
if (!IsNameStartChar(cs[0]))
{
if (UnicodeSpecsHelper.IsHighSurrogate(cs[0]) && cs.Length > 1)
{
if (!IsNameStartChar(cs[0], cs[1]))
{
return(false);
}
start++;
}
else
{
return(false);
}
}
if (cs.Length == start)
{
return(true);
}
// Further characters must be nameChar
for (int i = start; i < cs.Length; i++)
{
if (!IsNameChar(cs[i]))
{
if (UnicodeSpecsHelper.IsHighSurrogate(cs[i]) && i < cs.Length - 1)
{
if (!IsNameChar(cs[i], cs[i + 1]))
{
return(false);
}
i++;
}
else
{
return(false);
}
}
}
return(true);
}
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="compressionLevel">Compression Level to use</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public CompressingTurtleWriterContext(IGraph g, TextWriter output, int compressionLevel, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: base(g, output, compressionLevel, prettyPrint, hiSpeed, syntax)
{
}
/// <summary>
/// Creates a new Turtle Writer
/// </summary>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriter(TurtleSyntax syntax)
{
this._syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriterContext(IGraph g, TextWriter output, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: this(g, output, Options.DefaultCompressionLevel, prettyPrint, hiSpeed, syntax)
{
}
/// <summary>
/// Creates a new compressing Turtle writer using the given syntax level
/// </summary>
/// <param name="syntax">Syntax Level</param>
public CompressingTurtleWriter(TurtleSyntax syntax)
{
this._syntax = syntax;
}
/// <summary>
/// Creates a new Compressing Turtle Writer which uses the given Compression Level and Syntax Level
/// </summary>
/// <param name="compressionLevel">Desired Compression Level</param>
/// <param name="syntax">Syntax Level</param>
/// <remarks>See Remarks for this classes <see cref="CompressingTurtleWriter.CompressionLevel">CompressionLevel</see> property to see what effect different compression levels have</remarks>
public CompressingTurtleWriter(int compressionLevel, TurtleSyntax syntax)
: this(compressionLevel)
{
this._syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public TurtleWriterContext(IGraph g, TextWriter output, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: this(g, output, Options.DefaultCompressionLevel, prettyPrint, hiSpeed, syntax)
{
}
/// <summary>
/// Creates a new GZipped Turtle parser.
/// </summary>
/// <param name="syntax">Turtle Syntax.</param>
public GZippedTurtleParser(TurtleSyntax syntax)
: base(new TurtleParser(syntax))
{
}
/// <summary>
/// Determines whether a given String is a valid QName
/// </summary>
/// <param name="value">String to test</param>
/// <param name="syntax">Turtle Syntax</param>
/// <returns></returns>
public static bool IsValidQName(String value, TurtleSyntax syntax)
{
if (value.Contains(':'))
{
String ns, localname;
ns = value.Substring(0, value.IndexOf(':'));
localname = value.Substring(value.IndexOf(':') + 1);
//Namespace Validation
if (!ns.Equals(String.Empty))
{
//Allowed empty Namespace
if (ns.StartsWith("-") || ns.StartsWith("."))
{
//Can't start with a - or .
return(false);
}
else
{
char[] nchars = ns.ToCharArray();
if (IsPNCharsBase(nchars[0]))
{
if (nchars.Length > 1)
{
for (int i = 1; i < nchars.Length; i++)
{
//Check if valid Name Char
//The . character is not allowed in original Turtle but is permitted in new Turtle
if (!IsPNChars(nchars[i]) || (nchars[i] == '.' && syntax == TurtleSyntax.Original))
{
return(false);
}
}
//If we reach here the Namespace is OK
}
else
{
//Only 1 Character which was valid so OK
}
}
else
{
//Doesn't start with a valid Name Start Char
return(false);
}
}
}
//Local Name Validation
if (!localname.Equals(String.Empty))
{
//Allowed empty Local Name
char[] lchars = localname.ToCharArray();
if (IsPNCharsU(lchars[0]) || (Char.IsDigit(lchars[0]) && syntax == TurtleSyntax.W3C))
{
if (lchars.Length > 1)
{
for (int i = 1; i < lchars.Length; i++)
{
//Check if valid Name Char
//The . character is not allowed in original Turtle but is permitted in new Turtle
if (!IsPNChars(lchars[i]) || (lchars[i] == '.' && syntax == TurtleSyntax.Original))
{
return(false);
}
}
//If we reach here the Local Name is OK
}
else
{
//Only 1 Character which was valid so OK
}
}
else
{
//Not a valid Name Start Char
return(false);
}
}
//If we reach here then it's all valid
return(true);
}
else
{
//Must contain a colon
return(false);
}
}
/// <summary>
/// Creates a new Turtle Writer.
/// </summary>
/// <param name="syntax">Turtle Syntax.</param>
public TurtleWriter(TurtleSyntax syntax)
{
_syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Parser Context with custom settings.
/// </summary>
/// <param name="handler">RDF Handler.</param>
/// <param name="tokeniser">Tokeniser to use.</param>
/// <param name="syntax">Turtle Syntax.</param>
/// <param name="queueMode">Tokeniser Queue Mode.</param>
/// <param name="traceParsing">Whether to trace parsing.</param>
/// <param name="traceTokeniser">Whether to trace tokenisation.</param>
public TurtleParserContext(IRdfHandler handler, ITokeniser tokeniser, TurtleSyntax syntax, TokenQueueMode queueMode, bool traceParsing, bool traceTokeniser)
: base(handler, tokeniser, queueMode, traceParsing, traceTokeniser)
{
_syntax = syntax;
}
/// <summary>
/// Creates a new Compressing Turtle Writer which uses the given Compression Level and Syntax Level
/// </summary>
/// <param name="compressionLevel">Desired Compression Level</param>
/// <param name="syntax">Syntax Level</param>
/// <remarks>See Remarks for this classes <see cref="CompressingTurtleWriter.CompressionLevel">CompressionLevel</see> property to see what effect different compression levels have</remarks>
public CompressingTurtleWriter(int compressionLevel, TurtleSyntax syntax)
: this(compressionLevel)
{
this._syntax = syntax;
}
/// <summary>
/// Creates a new Turtle Writer Context with custom settings
/// </summary>
/// <param name="g">Graph to write</param>
/// <param name="output">TextWriter to write to</param>
/// <param name="compressionLevel">Compression Level to use</param>
/// <param name="prettyPrint">Pretty Print Mode</param>
/// <param name="hiSpeed">High Speed Mode</param>
/// <param name="syntax">Turtle Syntax</param>
public CompressingTurtleWriterContext(IGraph g, TextWriter output, int compressionLevel, bool prettyPrint, bool hiSpeed, TurtleSyntax syntax)
: base(g, output, compressionLevel, prettyPrint, hiSpeed, syntax)
{
}