In dBase/Foxpro they had an AT function synonymous (roughly) with our offset
function. They also had a RAT (Reverse AT) function. I needed something like
this many moons ago.
What I did to get all occurrences is I have a "pointer" variable I maintain
with the position of the first character after the last instance of the string
found. But to get the actual position in the original text, you have to add the
pointer to the offset like so:
put 0 into tPointer
repeat
put offset(tVar, tTextChunk, tPointer) into tNextPos
if tNextPos = 0 then exit repeat
add tPointer to tNextPos
put char tNextPos to tNextPos + length(tVar) of tTextChunk into
aFoundChunks [tNextPos] [length(tVar)]
put tNextPos + length(tVar) +1 into tPointer
end repeat
Something along those lines. Not tested, but you get the idea.
Bob S
> On Oct 29, 2018, at 08:32 , Keith Clarke via use-livecode
> <[email protected]> wrote:
>
> Folks,
> Is there a simple way to find the offset of a character from the ‘right’ end
> of a string, rather than the beginning - or alternatively get a list of all
> occurrences?
>
> I’m trying to separate paths & pages from a list of URLs and so looking to
> identify the position of the last ‘/‘ character.
>
> Thanks & regards,
> Keith
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