Re: Trim space chars from start of line
Re: Trim space chars from start of line
- Subject: Re: Trim space chars from start of line
- From: Deivy Petrescu <email@hidden>
- Date: Tue, 26 Jul 2011 00:14:37 -0400
On Jul 25, 2011, at 18:27 , Zavatone, Alex wrote:
> OK. I got it down to 2 seconds from 20.
>
> Here's how.
>
> My text is return delimited on a per line basis.
>
> I added a return to the start of text or line 1 would be skipped. Just have to remove that return after this operation.
>
> It's the looping through all the lines that is so slow. Since the lines may begin with a space, then every line really may start with a return and possibly spaces. So if I do a find and replace with the string return & " " and replace that with just return, using the text item delimiters, I thought it would be faster. And it sure is.
>
> (*2 seconds*)
>
> -- the new elven magic
> set myCountAfter to 0
> set myCountBefore to 1
> repeat while myCountBefore ≠ myCountAfter
> set myCountBefore to length of myText
> log myCountBefore
> set myResult to SpecialFindAndReplace(myText, return & " ", return)
> set myText to item 2 of myResult
> set myCountAfter to item 1 of myResult
> end repeat
>
> -- found this somewhere and have been using it:
> on SpecialFindAndReplace(TheString, tofind, toreplace)
> set ditd to text item delimiters
> set text item delimiters to tofind
> set textItems to text items of TheString
> set text item delimiters to toreplace
> if (class of TheString is string) then
> set res to textItems as string
> else -- if (class of TheString is Unicode text) then
> set res to textItems as Unicode text
> end if
> set text item delimiters to ditd
> -- log res
> return {length of res, res}
> end SpecialFindAndReplace
>
>
> Thanks to everyone for their help today. Made my Monday.
>
> Cheers,
What about a one-liner?
(script)
set prg to " on SpecialFindAndReplace(TheString, tofind, toreplace)"
set prg to text (get offset of (character 1 of word 1 of prg) in prg) thru -1 of prg
prg
(script)
That ought to beat the 2 seconds mark….
Deivy Petrescu
email@hidden
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