From: Rob Biedenharn <Rob@...>
Date: 2007-07-27T11:24:04+09:00
Subject: Re: How to delete array element and add to previous element

On Jul 26, 2007, at 9:59 PM, Al Cholic wrote:
> I reposting my last response since there is no edit on this forum.
>
> Sorry about the syntax.  I was just trying to show the array, it  
> was not
> intended to be ruby code.  What Im trying to do is read a text file  
> and
> then make sense of the data in that text file and store that info in a
> database.  I have managed to sort out into the arrays but need to get
> the POS2c etc elements into the same array (im guessing thats the best
> way to do it).
>
> For example here is code that im shuffling:
>
> 49  7  RP13,RP15,RP17,RP19,RP24,  12X2  33XD  Wireless,  
> Independent, 5%
>        RP32,RP33
> 50  4  RP27,RP28,RP30,RP31  10XC4  3X567  Network, Isolated, 5%
> 51  31  R1,R2,R8,R30,R32,R33,R35,  0603,R10K,1%  0603  3%,1/12W
>         R37,R39,R41,R42,R43,R49,
>         R50,R51,R52,R58,R68,R69,
>         R71,R72,R74,R85,R95,R117,
>         R129,R130,R155,R156,R158,
>         R160
>
> What I've done is split the text up into lines stored all the lines in
> an array with text.strip.split("\n")  But as you can see the R71,  
> R129,
> the elements in the third column continue on the next line.  I need a
> way to get them into one place.  Because those elements that are on  
> the
> next line are a continuation of the third column element.  The  
> elements
> on the line are separated by tabs.

I'm guessing that "51\t31\tR1,R2,..." means that this is the 51st  
"thing" and there are 31 of the Rnn's in the third column.  The  
following lines begin "\t\tR37,R39,..." and "\t\tR50,R51,..."

In that case, this fragment might help jump-start you toward a solution:

text = gets  # or however you're getting the next line

data = text.split("\t")  # or .split("\t", 6) to limit to 6 parts
expected = data[1].to_i  # here's where you get 31
data[2] = data[2].split(',').compact  # the .compact removes a  
possible nil from a trailing ','
found = data[2].length
while found < expected
   moretext = gets
   break unless moretext =~ /\A\t\t/ # \A anchors to start, then 2 TABs
   more_elements = moretext.split("\t",4)[2].split(',').compact
   data[2].concat(more_elements)
   found += more_elements.length
end

unless found == expected
   raise "found #{found}, but expected #{expected} on number #{data[0]}"
end


Yes, it's rough (but so is your problem statment ;-) and you might do  
better checking for the trailing comma on the line as an added  
indication that there are more elements to come.

Good Luck,

-Rob

Rob Biedenharn		http://agileconsultingllc.com
Rob@AgileConsultingLLC.com