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parse text file

thread271-1816253

parse text file

parse text file

(OP)
hi all:

I have just registred to start a new thread regarding use of awk to parse text file and I' m new in awk language

I took a portion of data from texte file :

CODE --> 

DATA                 
                     
DATA                 
GHR1                 
                     
BRAND                
TRUE                 
                     
     LST             
     115-34-SPECT    
     115-42-SPECT    
     115-50-SPECT    
                     
                     
BRAND                
FALSE                
                     
     LIST            
     115-34-SPECT    
     115-42-SPECT    
     115-50-SPECT    
                     
END


I have parsed the text file with this code . test file is texte file example.

CODE --> 

awk -v  '/^DATA/&& /BRAND/ {if(NR>1) print  "DATAFIRST=" getline }' test

I want to get bellow data :

CODE --> 

DATAFIRST=GHR1,LSIT=115-34-SPECT,BLOC,BRAND=TRUE;   
DATAFIRST=GHR1,LSIT=115-42-SPECT,BLOC,BRAND=TRUE;   
DATAFIRST=GHR1,LSIT=115-50-SPECT,BLOC,BRAND=TRUE;   
                                                    
DATAFIRST=GHR1,LSIT=115-34-SPECT,DEBLOC,BRAND=FALSE;
DATAFIRST=GHR1,LSIT=115-42-SPECT,DEBLOC,BRAND=FALSE;
DATAFIRST=GHR1,LSIT=115-50-SPECT,DEBLOC,BRAND=FALSE;

I cant figured out how to do that any help will be appreciated .

thanks

RE: parse text file

Hi seifou45,

I tried this

seifou45.awk

CODE

# run:
# awk -f seifou45.awk seifou45.txt

NR > 1 && $1 ~ /DATA/ {
  data_nr = NR
  next
}

NR == data_nr + 1 {
  beg_line = "DATAFIRST="$1
  next
}

$1 ~ /BRAND/ {
  brand_nr = NR  
  next
}

NR == brand_nr + 1 {
  if ($1 ~ /TRUE/) {
    end_line = "BLOC,BRAND="$1";"
  }
  if ($1 ~ /FALSE/) {
    print "" 
    end_line = "DEBLOC,BRAND="$1";"
  }
  next
}

$1 == "LST" || $1 == "LIST" {
  list_nr = NR
  next
}

NR > list_nr && $1 !~ /END/ {
  if ($1  == "") {
    next
  }
  else {
    middle_line = "LSIT="$1
    print beg_line","middle_line","end_line
  }
}

and got this result with data file you provided above:

CODE

$ awk -f seifou45.awk seifou45.txt
DATAFIRST=GHR1,LSIT=115-34-SPECT,BLOC,BRAND=TRUE;
DATAFIRST=GHR1,LSIT=115-42-SPECT,BLOC,BRAND=TRUE;
DATAFIRST=GHR1,LSIT=115-50-SPECT,BLOC,BRAND=TRUE;

DATAFIRST=GHR1,LSIT=115-34-SPECT,DEBLOC,BRAND=FALSE;
DATAFIRST=GHR1,LSIT=115-42-SPECT,DEBLOC,BRAND=FALSE;
DATAFIRST=GHR1,LSIT=115-50-SPECT,DEBLOC,BRAND=FALSE;

RE: parse text file

(OP)
hi Mikrom:

sorry for my late response I was sick .

the scipt works fine thanks a lot of .

just last thing can you explain please the script .

for example :

data_nr it is a variable assigned to NR number of recored and in the next block NR == data_nr+1 new assignement with commparison incremented ?

thanks

RE: parse text file

Hi seifou45,

The blocks are executed only when the condition fits,
for example:

This block

CODE

NR > 1 && $1 ~ /DATA/ {
  data_nr = NR
  next
}
will be executed only from the second line, when column #1 contains string "DATA"

This block will be executed only on the line which follows the line which contains the string "DATA"

CODE

NR == data_nr + 1 {
  beg_line = "DATAFIRST="$1
  next
}

To understand how it works insert some print statements and look at an awk tutorial or manual
https://www.tutorialspoint.com/awk/index.htm
https://www.gnu.org/software/gawk/manual/gawk.html

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