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Using rexReplace and rexCompile

cessej

 I just did some few rounds for testing rexCompile and rexReplace. I need help because Im not too expert in string manipulations. Here's my code.

procedure(strcheck()

let((mystring test_string newString)

mystring=",<.>/?;:'\"{}_|`~!@#$%^&()=-]\\[*+"

println(length(parseString(mystring ""))) ;output must be 32

foreach(char parseString(mystring "")

test_string=strcat("cessej" char char)

rexCompile(char)

newString=rexReplace(test_string "A" 0)

if(newString!="cessejAA" then printf("Wrong output for %L\n" char))

)

)

)

 *********************************************************************************

1. When at character "[", got error *Error* rexCompile: Missing ] - "["

2. When at character backslash("\\"), got error *Error* rexcompile: Trailing backslash - "\\"

3. When at character "*", "+", got error *Error* rexCompile: Empty closure - "*"

4. Wrong rexReplace ouput at character ".", "$", "^". Expected output is "cessejAA".

Please help to make the rexReplace result equal to "cessejAA".

  • Well, this is a bit of an odd thing to do - you are trying to match all the "magic" characters in regular expressions, many of which need multiple character sequences. For example, "[a-z]" is a range of characters, so a "[" on its own makes little sense. It's not a "regular expression" any more.

    If that's what  you want, you could use rexMagic(nil) at the beginning of the code and rexMagic(t) at the end. I'm always very wary of advising people to play with rexMagic() because there's a chance you'll leave it off and that may break other parts of the code - as it's a global switch.

    Note too that in IC61 you have the more advanced pcre* functions which are more powerful.

    Regards,

    Andrew.

  • You could also escape some of the characters (e.g. "\\[") but you can't do that for all the characters you have above because some that doesn't mean anything (e.g. <>) and some the normal character is not special, but the escaped character is (e.g. "(" is not special, but "\\(" is)

    Andrew

  • Thanks for the quick reply.

    I'm able to find the right rexCompile string for each character.

    For these characters, $.^[*+, just put escape characters for the rexCompile string (e.g "\\[")

    For backslash, rexCompile string must be "[\\]"

    The rest of the characters can compile as it is.

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