Read single character from uni-string

[hbraun]

Hello,

I use WinCC-OA 3.16P11.

Is it possible to read a single character from an uni-string. Adressing characters with [index] seems to work byte-wise only.

For example reading the 3. character ("ö") from string "aböcd" does not work with string[2]. Also I could not find any uniStr-function that has this functionality.

Use-case is to make a filter-string from the original string that ignores case with patternMatch(), for example the filter string for "aböcd" would be "[aA][bB][öÖ][cC][dD]".

Is there any way to achieve this?

Kind regards

[dvribeira]

Why not

Code: Select all

substr(your_string_var, 2, 1)

?

From P013 onwards you could also use:

Code: Select all

your_string_var.mid(2, 1);

or

Code: Select all

your_string_var.at(2);

But they will always return a string type, obviously. Not sure if that might be a problem for you.

[hbraun]

Thank you, uniSubStr() works fine. When searching for uni-string functions in the help I searched for "uniStr*" so I did not find it...

[dvribeira]

Indeed, sorry, uniSubStr instead of substr. The other two introduced with P013 work on the unicode character level and not on bytes, so they would be good for this as well.

[gschijndel]

Also the 'strwalk' function should be able to read a single Unicode character.