UTF8_TO_WSTRING

The function converts a string in UTF-8 format into a string (variable) of the data type WSTRING.

The function returns

TRUE if the conversion was possible.
FALSE if the conversion was not possible due to the given character set.

If the input string is longer than the output string, the string will be truncated. The input string is too long to be coded to the output string. The memory requirement for the output string can be higher than that for the input string when converting to UTF-8. Unknown characters are skipped.

The function stops the conversion to
Tc2_Utilities.Parameterlist.cMaxCharacters.
With appropriate parameterization an infinite loop can be avoided.

FUNTION UTF8_TO_WSTRING : BOOL

The return value is TRUE if the conversion was successful.

Inputs

VAR_INPUT
    pDstWSTRING : POINTER TO WSTRING;
    pSrcUTF8    : PVOID;
    nDstSize    : UDINT;
END_VAR

Name	Type	Description
pDstWSTRING	POINTER TO WSTRING	Pointer to the converted WSTRING variable (output string)
pSrc UTF8	PVOID	Pointer variable (input string)
nDstSize	UDINT	Size of the resulting STRING variable (output string) in bytes; the SIZEOF() operator can be used for the assignment.

Outputs

VAR_OUTPUT
    nDstLen : UDINT;
END_VAR

Name	Type	Description
nDstLen	UDINT	Actual length of the output string as number of characters

	Documentation for attribute 'TcEncoding' := 'UTF-8' For more information about strings in UTF-8 format see also the documentation on the 'TcEncoding' attribute.

Requirements

Development environment	Target platform	PLC libraries to be integrated (category group)
TwinCAT v3.1.4022	PC or CX (x86, x64, ARM)	Tc2_Utilities (System) >= 3.3.21.0