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Regex test for quotation

Svgmassive
Svgmassive asked
on
I am looking for a regex pattern to  return true for these two string
("SELECT * FROM CIM_DATAFILE WHERE NAME = '" & Replace(sValue, "\", "\\") & "'")
strC = "'" Then


and false for ' "wwwww_0" or anything else

in vba
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Terry WoodsIT Guru
Most Valuable Expert 2011

Commented:
Do you mean these 2 strings?
 ("SELECT * FROM CIM_DATAFILE WHERE NAME = '" & Replace(sValue, "\", "\\") & "'")

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and 
 strC = "'" Then

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?
Svgmassive

Author

Commented:
yes
aikimark
Top Expert 2014

Commented:
Will the Replace() function already have been invoked before you do this comparison?
IT Guru
Most Valuable Expert 2011
Commented:
A regex pattern can look for a value of exactly A or B using the | character, along with ^ and $ placeholders, such that your pattern would be:
^(A|B)$

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Using that technique, it's just a matter of escaping the characters in A and B so that they will be interpreted correctly with regards to string parsing for VBA and also for the parsing of the regular expression pattern.

I'm not familiar enough with VBA to be sure about strings, but I suspect " may need to be changed to "" to avoid terminating the string.

There's a regex escape method available here that can be used to help you create your pattern:
https://stackoverflow.com/questions/50440808/excel-vba-regex-escape-method

The code being:
Dim regExEscape As New RegExp
With regExEscape
    .pattern = "[-/\\^$*+?.()|[\]{}]"
    .Global = True
    .MultiLine = False
End With

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Used like this I believe:
.pattern = regExEscape.Replace(user_string, "\$&")

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Does that help at all?
Terry WoodsIT Guru
Most Valuable Expert 2011

Commented:
ie You'd build up your pattern with code something like this:
pattern = "^("&
regExEscape.Replace("(""SELECT * FROM CIM_DATAFILE WHERE NAME = '"" & Replace(sValue, ""\"", ""\\"") & ""'"")", "\$&")&
"|"&
regExEscape.Replace("strC = ""'"" Then", "\$&")&
")$"

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