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parse a text file

Each alarm starts with UNIT6, I'm trying to get all the rows of each alarm into one row and from there I can sort and do whatever I need. I've had some success using while loops but the problem is some alarms have 4 rows,  some have 5,6, or 7. Once it gets beyond 4 rows I get duplicates or I only get alarms with 5 rows depending on how I set up the while loop. I attached the code I have been trying so far it is somewhat messy from all the retries.
Here are is a partial alarm log:
           UNIT6        LOT-0086  BLOCK-0086    ENVIR     2007-11-14  00:09:19.37
*   ALARM                         D142B      
   (10239) 7312 RATIO THRESHOLD                    
                N

           UNIT6        LOT-0086             ENVIR     2007-11-14  00:09:20.05
*   ALARM                                        
   (10241) 7000 CABINET OPEN                                                    
                Cabinet open.                                        
                02 01 00

           UNIT6        LOT-0086             COMM      2007-11-14  00:09:20.46
**  ALARM                                        
   (10242) 8999 BLOCKED FROM USE                                                
                PCBLOCKHub      PCBLOCKHub      CC bank            
                02 00 1d
#!/usr/bin/perl -w
use strict;
 
 
open DDDLOG,  "expx.txt" or die "Cannot open file $!";
open DDDRPT1, ">all.txt" or die "Cannot open file $!";
 
 
 
my @FFF; my $fff;
my @DDD; my $ddd;
my @NUM; my $num;
my @GGG; my $ggg;
my @DESC; my $desc;
my @DESC2; my $desc2;
my @DESC3; my $desc3;
 
 
########  PARSE RAW FILE ################
 
 
MAIN: while (<DDDLOG>){
            if (/\s+UNIT6\s+LOT-\d\d\d\d/){
            $fff = $_;
            @FFF = split /\s+/, $fff;
            #print "@FFF\n";
            #}
     
 
         LOOP2: while (<DDDLOG>){
                     redo MAIN if (/\s+UNIT6/);
                     if (/\*|\*\*|\*\*\*/){
                     $ddd = $_;
                     @DDD = split /\s+/, $ddd;
                     #print "@FFF @DDD\n";
                     #}
 
             LOOP3: while (<DDDLOG>){
                         redo MAIN if (/\s+UNIT6/);
                         if (/7\d\d\d|8\d\d\d/){
                         $num = $_;
                         @NUM = split /\s+/, $num;
                         #print DDDRPT1 "@FFF @DDD @NUM\n";
                         #}
 
                   LOOP4: while (<DDDLOG>){
                               redo MAIN if (/\s+UNIT6/);
                               if (/[a-zA-Z0-9]/){
                              $desc = $_;
                               #chomp($desc);
                               @DESC = split /\s+/, $desc;
                
                              #print DDDRPT1 "@FFF @DDD @NUM @DESC\n";
                               # print DDDRPT1 "$DESC[1] $DESC[2] $DESC[3]\n";
                 
                 
 
 
     LOOP5: while (<DDDLOG>){
                 redo MAIN if (/\s+UNIT6/);
                 if (/[a-zA-Z0-9]/){
                 $desc2 = $_;
                 #chomp($desc2);
                 @DESC2 = split /\s+/, $desc2;
                
               print DDDRPT1 "@FFF @DDD @NUM @DESC @DESC2\n";
                  # print DDDRPT1 "$DESC[1] $DESC[2] $DESC[3]\n";
                  #}  
                 #elsif(/ /){
                 #print DDDRPT1 "@FFF @DDD @NUM @DESC\n";
                 #last;
                 
            
     LOOP6: while (<DDDLOG>){
                 redo MAIN if (/\s+UNIT6/);
                 if (/[a-zA-Z0-9]/){
                 $desc3 = $_;
                 #chomp($desc3);
                 @DESC3 = split /\s+/, $desc3;
                
               #print DDDRPT1 "@FFF @DDD @NUM @DESC @DESC2 @DESC3\n";
                  # print DDDRPT1 "$DESC[1] $DESC[2] $DESC[3]\n";
                  }  
                 elsif(/ /){
                 #print DDDRPT1 "@FFF @DDD @NUM @DESC\n";
                 last;    
            
}}}}
   }
}
            }
            } 
            }
     }}
}
close DDDRPT1;
close DDDLOG;

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omcr
Asked:
omcr
1 Solution
 
ozoCommented:
#!/usr/bin/perl -w
use strict;

open DDDLOG,  "expx.txt" or die "Cannot open file $!";
open DDDRPT1, ">all.txt" or die "Cannot open file $!";

my $e="";
while( <DDDLOG> ){
    chomp;
    print DDDRPT1 $e and $e="\n" if /^\s+UNIT6\s/;
    print DDDRPT1;
}
print DDDRPT1 $e;
close DDDRPT1;

0
 
omcrAuthor Commented:
Ozo,
Amazing. I'm not going say how much time (days) I've spent on this.
If you can take a second to explain it that would help. About the only thing I think I understand is $e adds a "\n" to the end everytime it sees UNIT6. Are you chomping every line in the file, I think so, and then newline in $e signals where to end. But I don't understand how you get each line into $e and make it one line without the  use of arrays?. Anyway there is one problem, the actual log file contains several lines of  trash at the beginning and end. I'm going to try to enclose your code in a while loop and see what happens
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