Class Helper

constructor

• new Helper(): Helper

  Returns Helper

Static ReadonlyALPHABET_7BIT

Static ReadonlyEXTENDED_TABLE

Static ReadonlylimitCompress

Static ReadonlylimitNormal

Static ReadonlylimitUnicode

StaticasciiToUint8Array

• asciiToUint8Array(ascii: string): Uint8Array

  Converts an ASCII string to a Uint8Array.

  Parameters

  • ascii: string

    The ASCII string to convert

  Returns Uint8Array

  A Uint8Array representing the ASCII string

Staticchar

• char(order: number): string

  Returns the character represented by the specified Unicode code point.

  Parameters

  • order: number

    The Unicode code point

  Returns string

  A string containing the character represented by the code point

Staticdecode16Bit

• decode16Bit(text: string): string

  Decodes a 16-bit encoded string into a human-readable text.

  Parameters

  • text: string

    The 16-bit encoded hexadecimal string

  Returns string

  The decoded text

Staticdecode7Bit

• decode7Bit(text: string, inLen?: number, alignBits?: number): string

  Decodes a 7-bit encoded string into a human-readable text.

  Parameters

  • text: string

    The 7-bit encoded hexadecimal string
  • OptionalinLen: number

    The length of the input data in septets
  • OptionalalignBits: number

    The number of bits for alignment

  Returns string

  The decoded text

Staticdecode8Bit

• decode8Bit(text: string): string

  Decodes an 8-bit encoded string into a human-readable text.

  Parameters

  • text: string

    The 8-bit encoded hexadecimal string

  Returns string

  The decoded text

Staticencode16Bit

• encode16Bit(text: string): { length: number; result: string }

  Encodes a text string into 16-bit hexadecimal PDU format.

  Parameters

  • text: string

    The text to encode

  Returns { length: number; result: string }

  An object containing the length of the encoded text in septets and the result as a hexadecimal string

Staticencode7Bit

• encode7Bit(text: string, alignBits?: number): { length: number; result: string }

  Encodes a text string into 7-bit hexadecimal PDU format.

  Parameters

  • text: string

    The text to encode
  • alignBits: number = 0

    The number of bits for alignment, if needed

  Returns { length: number; result: string }

  An object containing the length of the encoded text in septets and the result as a hexadecimal string

Staticencode8Bit

• encode8Bit(text: string): { length: number; result: string }

  Encodes a text string into 8-bit hexadecimal PDU format.

  Parameters

  • text: string

    The text to encode

  Returns { length: number; result: string }

  An object containing the length of the encoded text and the result as a hexadecimal string

StaticgetByteFromHex

• getByteFromHex(hexStr: string): number

  Converts the first two characters of a hexadecimal string to a number.

  Parameters

  • hexStr: string

    The hexadecimal string to convert

  Returns number

  The number represented by the first two characters of the hexadecimal string

StatichexToUint8Array

• hexToUint8Array(hex: string): Uint8Array

  Converts a hex string to a Uint8Array.

  Parameters

  • hex: string

    The hex string to convert

  Returns Uint8Array

  A Uint8Array representing the hex string

Staticorder

• order(char: string): number

  Returns the Unicode code point of the first character of the input string.

  Parameters

  • char: string

    A single character string

  Returns number

  The Unicode code point of the character

StatictoStringHex

• toStringHex(number: number, fill?: number): string

  Converts a number to a hexadecimal string with optional zero padding.

  Parameters

  • number: number

    The number to convert
  • fill: number = 2

    The minimum length of the resulting string, padded with zeros if necessary

  Returns string

  The number as a hexadecimal string

Staticucfirst

• ucfirst(str: string): string

  Capitalizes the first character of the input string.

  Parameters

  • str: string

    The string to capitalize

  Returns string

  The input string with its first character capitalized