Gossamer Forum: General: Perl Programming: Get rid of newlines, ONLY if they exist on a certain line?

Sep 19, 2003, 5:47 AM

Andy

Veteran / Moderator (18441 posts)

Sep 19, 2003, 5:47 AM

Post #1 of 7

Shortcut

Get rid of newlines, ONLY if they exist on a certain line?

Hi. Had a look around, but couldn't find anything related to this :/

Basically, I have a text file, consisting of;

Code:
test|field|123455| 
address1| 
address2| 
address3| 
another line|field|123455| 
address1| 
address2| 
address3|

I just don't seem to be making any progress :(

TIA

Andy (mod)
andy@ultranerds.co.uk

Sep 19, 2003, 7:35 AM

fuzzy logic

Enthusiast (854 posts)

Sep 19, 2003, 7:35 AM

Post #2 of 7

Shortcut

Re: [Andy] Get rid of newlines, ONLY if they exist on a certain line? In reply to

try this:

Code:
open (IN, "test.txt"); 
  open (OUT, ">test2.txt"); 
    while (<IN>) { 
      my $line = $_; 
      chomp($line); 
      for (1 .. 3) { 
        $line .= <IN>; 
        chomp ($line); 
      } 
      print OUT $line . "\n"; 
    } 
  close OUT; 
close IN;

Philip
------------------
Limecat is not pleased.

Sep 19, 2003, 7:38 AM

Andy

Veteran / Moderator (18441 posts)

Sep 19, 2003, 7:38 AM

Post #3 of 7

Shortcut

Re: [fuzzy logic] Get rid of newlines, ONLY if they exist on a certain line? In reply to

Thanks for the attempt. Unfortunatly, the example I gave wasn't really that accurate. The number of lines that need newlines on changes each time .... I've given up on this for now. Will probably try and tackle it tomorrow when my head is a bit fresher :)

Cheers

Andy (mod)
andy@ultranerds.co.uk

Sep 19, 2003, 7:40 AM

Wil

Veteran / Moderator (4108 posts)

Sep 19, 2003, 7:40 AM

Post #4 of 7

Shortcut

Re: [Andy] Get rid of newlines, ONLY if they exist on a certain line? In reply to

You need a regex that looks for multiple instances of | on a line. If it finds more than one | on that line, then add a line break after it.

Is that what you want?

- wil

Sep 19, 2003, 7:42 AM

fuzzy logic

Enthusiast (854 posts)

Sep 19, 2003, 7:42 AM

Post #5 of 7

Shortcut

Re: [Andy] Get rid of newlines, ONLY if they exist on a certain line? In reply to

Is it simply a multirecord line followed by "x" number of single record lines?

Philip
------------------
Limecat is not pleased.

Sep 19, 2003, 7:43 AM

Andy

Veteran / Moderator (18441 posts)

Sep 19, 2003, 7:43 AM

Post #6 of 7

Shortcut

Re: [fuzzy logic] Get rid of newlines, ONLY if they exist on a certain line? In reply to

Basically, its a dump file from a client. They send it to me, but it has newlines in it. My current importing script doesn't handle this, as it uses a WHILE, which takes each newline as an entry. I'm basically trying to write some cleanup code, so I can get it all on one line Unsure

Cheers

Andy (mod)
andy@ultranerds.co.uk

Sep 19, 2003, 8:04 AM

fuzzy logic

Enthusiast (854 posts)

Sep 19, 2003, 8:04 AM

Post #7 of 7

Shortcut

Re: [Andy] Get rid of newlines, ONLY if they exist on a certain line? In reply to

Code:
open (IN, "test.txt"); 
  open (OUT, ">test2.txt"); 
    my $first_rec = 1; 
    while (my $rec = <IN>) { 
      chomp $rec; 
      if ($rec =~ /.*\|.*\|/) { 
        print OUT "\n" if $first_rec-- != 1; 
      } 
      print OUT $rec; 
    } 
  close OUT; 
close IN;

Philip
------------------
Limecat is not pleased.