Removing invalid characters from a string

[HaMsTeYr]

I don't know if I'm not looking hard enough, but I couldn't find a topic on this, so I'm posting it here.

Essentially, in my nsis program I'm running some of the files have strange characters like " ®" or "©". They're problemful for me and I need them removed from the string itself.

So for example, $0 contains:

"Application Name Example® v1.0"

I need it to become:

"Application Name Example v1.0"

I know there are results about removing the more standard 'found on keyboard' invalid characters, but what about ones like these?

I've tried:

code:
${WordReplace} "$0" "®" "" "+" $0

But that doesn't seem to work.

Any workaround to this?

[Afrow UK]

You could use this: http://nsis.sourceforge.net/StrCSpn,...for_characters

Stu

[HaMsTeYr]

I took a look at that function before hand, and from what I gather, all it does is flag me if the string contains an invalid character, correct me if I'm wrong.

I need to actually remove it from the string though

[Afrow UK]

I think it'd be best to write your own function for this. Iterate through all characters in A and copy to B ignoring any characters that are invalid.

Stu

[pengyou]

I've tried:

code:
${WordReplace} "$0" "®" "" "+" $0

But that doesn't seem to work.

It seemed to work for me:

PHP Code:

Name "Demo"
OutFile demo.exe

RequestExecutionLevel "user"

ShowInstDetails show

!include "WordFunc.nsh"

Section default
  DetailPrint ""
  StrCpy $0 "Application Name Example® v1.0"
  DetailPrint "Input : $0"
  ${WordReplace} "$0" "®" "" "+" $0
  DetailPrint "Output: $0"
  DetailPrint ""
SectionEnd 


Compiled and ran demo.exe and it produced:

code:
Input : Application Name Example® v1.0

Output: Application Name Example v1.0

[Afrow UK]

That method will never do unless you know the complete set of characters you have to remove. It would be simpler, as you say, to only include valid ASCII characters. A custom function is likely needed unless a solution already exists.

Stu