The BaH.RegEx module already supports named capture groups in the format (?<name>..) but the functions to use them have not been exposed in the module.
If you wish to use them; First add the following method to Type TRegEx in regex.bmx:
'# Obtain match number using capture name
'# Si Dunford [Scaremonger] - Aug 2014
Method getStringNumber:Int( captureName:String )
Local name:Byte Ptr = captureName.toWString()
Local index:Int = pcre16_get_stringnumber(pcre, name);
MemFree( name )
Return index
End Method
Secondly: Add the following line to the Extern section at the bottom of common.bmx:
'# Si Dunford [Scaremonger] Aug 2014
Function pcre16_get_stringnumber:Int( pcre:Byte Ptr, name:Byte Ptr )
Now re-compile the module.
You can extract the capture index number of a named group with a single call as follows:
SuperStrict
Import bah.regex
Local str$ = "yet another test"
Local match:TRegExMatch
Local regex:TRegEx = TRegEx.Create( "(?<word>\w*)" )
local index:int
Try
match = regex.Find( str )
Catch e:TRegExException
If e.num <> REGEX_NOMATCH Then
Print "Error : " + e.toString()
End
Else
Print "No Match"
End If
End Try
If match Then
index = regex.getStringNumber("word")
Print index + ". " + match.SubExp(index)
End If
Print "Done."
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