Class UnicodeSpecsHelper

Helper Class which defines some Test Functions for testing the Unicode Category of Characters.

Inheritance
object
UnicodeSpecsHelper
Inherited Members
Namespace: VDS.RDF.Parsing
Assembly: dotNetRdf.dll
Syntax
public class UnicodeSpecsHelper

Fields

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HighSurrogateEnd

End of high surrogate range.

Declaration
public const int HighSurrogateEnd = 56319
Field Value
Type Description
int
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HighSurrogateStart

Start of high surrogate range.

Declaration
public const int HighSurrogateStart = 55296
Field Value
Type Description
int
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LowSurrogateEnd

End of low surrogate range.

Declaration
public const int LowSurrogateEnd = 57343
Field Value
Type Description
int
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LowSurrogateStart

Start of low surrogate range.

Declaration
public const int LowSurrogateStart = 56320
Field Value
Type Description
int

Methods

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ConvertToChar(string)

Converts a Hex Escape into the relevant Unicode Character.

Declaration
public static char ConvertToChar(string hex)
Parameters
Type Name Description
string hex

Hex code.
Returns
Type Description
char
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ConvertToChars(string)

Converts a Hex Escape into the relevant UTF-16 codepoints.

Declaration
public static char[] ConvertToChars(string hex)
Parameters
Type Name Description
string hex
Returns
Type Description
char[]
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ConvertToUtf32(char, char)

Converts the value of a UTF-16 encoded surrogate pair into a Unicode code point.

Declaration
public static int ConvertToUtf32(char highSurrogate, char lowSurrogate)
Parameters
Type Name Description
char highSurrogate

A high surrogate code point (that is, a code point ranging from U+D800 through U+DBFF).
char lowSurrogate

A low surrogate code point (that is, a code point ranging from U+DC00 through U+DFFF).
Returns
Type Description
int

The 21-bit Unicode code point represented by the highSurrogate and lowSurrogate parameters.
Exceptions
Type Condition
ArgumentOutOfRangeException

highSurrogate is not in the range U+D800 through U+DBFF, or lowSurrogate is not in the range U+DC00 through U+DFFF.
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IsDigit(char)

Checks whether a given Character is considered a Digit.

Declaration
public static bool IsDigit(char c)
Parameters
Type Name Description
char c

Character to Test.
Returns
Type Description
bool
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IsHighSurrogate(char)

Indicates whether the specified char object is a high surrogate.

Declaration
public static bool IsHighSurrogate(char c)
Parameters
Type Name Description
char c

The Unicode character to evaluate.
Returns
Type Description
bool

true if the numeric value of the c parameter ranges from U+D800 through U+DBFF; otherwise, false.
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IsLetter(char)

Checks whether a given Character is considered a Letter.

Declaration
public static bool IsLetter(char c)
Parameters
Type Name Description
char c

Character to Test.
Returns
Type Description
bool
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IsLetterModifier(char)

Checks whether a given Character is considered a Letter Modifier.

Declaration
public static bool IsLetterModifier(char c)
Parameters
Type Name Description
char c

Character to Test.
Returns
Type Description
bool
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IsLetterOrDigit(char)

Checks whether a given Character is considered a Letter or Digit.

Declaration
public static bool IsLetterOrDigit(char c)
Parameters
Type Name Description
char c

Character to Test.
Returns
Type Description
bool
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IsLowSurrogate(char)

Indicates whether the specified char object is a low surrogate.

Declaration
public static bool IsLowSurrogate(char c)
Parameters
Type Name Description
char c

The character to evaluate.
Returns
Type Description
bool

true if the numeric value of the c parameter ranges from U+DC00 through U+DFFF; otherwise, false.

Extension Methods