It probably should be named listOffset, like itemOffset or lineOffset. Bob S
> On Nov 1, 2018, at 17:04 , Geoff Canyon via use-livecode > <use-livecode@lists.runrev.com> wrote: > > Nice! I *just* finished creating a github repository for it, and adding > support for multi-char search strings, much as you did. I was coming to the > list to post the update when I saw your post. > > Here's the GitHub link: https://github.com/gcanyon/offsetlist > > Here's my updated version: > > function offsetList D,S,pCase > -- returns a comma-delimited list of the offsets of D in S > set the caseSensitive to pCase is true > set the itemDel to D > put length(D) into dLength > put 1 - dLength into C > repeat for each item i in S > add length(i) + dLength to C > put C,"" after R > end repeat > set the itemDel to comma > if char -dLength to -1 of S is D then return char 1 to -2 of R > put length(C) + 1 into lenC > put length(R) into lenR > if lenC = lenR then return 0 > return char 1 to lenR - lenC - 1 of R > end offsetList > > On Thu, Nov 1, 2018 at 8:28 AM Niggemann, Bernd via use-livecode < > use-livecode@lists.runrev.com> wrote: > >> Hi Geoff, >> >> thank you for this beautiful script. >> >> I modified it a bit to accept multi-character search string and also for >> case sensitivity. >> >> It definitely is a lot faster for unicode text than anything I have seen. >> >> ----------------------------- >> function offsetList D,S, pCase >> -- returns a comma-delimited list of the offsets of D in S >> -- pCase is a boolean for caseSensitive >> set the caseSensitive to pCase >> set the itemDel to D >> put the length of D into tDelimLength >> repeat for each item i in S >> add length(i) + tDelimLength to C >> put C - (tDelimLength - 1),"" after R >> end repeat >> set the itemDel to comma >> if char -1 of S is D then return char 1 to -2 of R >> put length(C) + 1 into lenC >> put length(R) into lenR >> if lenC = lenR then return 0 >> return char 1 to lenR - lenC - 1 of R >> end offsetList >> ------------------------------ >> >> Kind regards >> Bernd >> >> >> >> >> >>> >>> Date: Thu, 1 Nov 2018 00:15:37 -0700 >>> From: Geoff Canyon >>> To: How to use LiveCode <use-livecode@lists.runrev.com> >>> Subject: Re: How to find the offset of the last instance of a >>> repeating character in a string? >>> >>> I was curious if using the itemDelimiter might work for this, so I wrote >>> the below code out of curiosity; but in my quick testing with single-byte >>> characters it was only about 30% faster than the above methods, so I >> didn't >>> bother to post it. >>> >>> But Ben Rubinstein just posted about a terrible slow-down doing pretty >> much >>> this same thing for text with unicode characters. So I ran a simple test >>> with 8000 character long strings that start with a single unicode >>> character, this is about 15x faster than offset() with skip. For >>> 100,000-character lines it's about 300x faster, so it seems to be immune >> to >>> the line-painter issues skip is subject to. So for what it's worth: >>> >>> function offsetList D,S >>> -- returns a comma-delimited list of the offsets of D in S >>> set the itemDel to D >>> repeat for each item i in S >>> add length(i) + 1 to C >>> put C,"" after R >>> end repeat >>> set the itemDel to comma >>> if char -1 of S is D then return char 1 to -2 of R >>> put length(C) + 1 into lenC >>> put length(R) into lenR >>> if lenC = lenR then return 0 >>> return char 1 to lenR - lenC - 1 of R >>> end offsetList >>> >> >> >> _______________________________________________ >> use-livecode mailing list >> use-livecode@lists.runrev.com >> Please visit this url to subscribe, unsubscribe and manage your >> subscription preferences: >> http://lists.runrev.com/mailman/listinfo/use-livecode >> > _______________________________________________ > use-livecode mailing list > use-livecode@lists.runrev.com > Please visit this url to subscribe, unsubscribe and manage your subscription > preferences: > http://lists.runrev.com/mailman/listinfo/use-livecode _______________________________________________ use-livecode mailing list use-livecode@lists.runrev.com Please visit this url to subscribe, unsubscribe and manage your subscription preferences: http://lists.runrev.com/mailman/listinfo/use-livecode
