AWK script


 
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# 1  
Old 06-13-2011
AWK script

Hi Team,

I have the below AWKscript ,
Code:
awk '{printf "%s\t ", $1;if(substr($2,1,1)=="X"){ if(substr($2,2,1)=="("){printf "VARCHAR\t%d\n",int(substr($2,3,length($2)-4))} else if(substr($2,2,1)=="X"){printf "VARCHAR\t%d\n",length($2)-1}else{printf "VARCHAR\t1\n"}}
 else if(substr($2,1,1)=="S"||substr($2,1,1)=="9"){printf "NUMERIC \n" }else{print $2}}' tempcopyfile.txt >newfile.txt

i want the above in the below script format ,
Code:
#!/bin/awk -f
BEGIN {
  printf "%s\t ", $1;
  if(substr($2,1,1)=="X")
  { 
    if(substr($2,2,1)=="(")
    {
      printf "VARCHAR\t%s\n",substr($2,3,length($2)-4)
    }
    else if(substr($2,2,1)=="X")
    {
      printf "VARCHAR\t%d\n",length($2)-1
    }
    else
    {
      printf "VARCHAR\t%d\n",length($2)
    }
  }
  else if(substr($2,1,1)=="S"||substr($2,1,1)=="9")
  {
    printf "NUMERIC \n"}else{print $2
  }
} tempcopyfile.txt >newfile.txt
END
{
  print "Done"
}

i tried, its not working fine. Please help me on this and thanks in advance..

Baski

Last edited by Scott; 06-13-2011 at 07:43 AM.. Reason: Please indent your code and use code tags
# 2  
Old 06-13-2011
Code:
#!/bin/awk -f

{
    printf "%s\t ", $1
    if (substr($2, 1, 1) == "X") {
        if (substr($2, 2, 1) == "(") {
            printf "VARCHAR\t%d\n", int(substr($2, 3, length($2) - 4))
        } else {
            if (substr($2, 2, 1) == "X") {
                printf "VARCHAR\t%d\n", length($2) - 1
            } else {
                printf "VARCHAR\t1\n"
            }
        }
    } else {
        if (substr($2, 1, 1) == "S" || substr($2, 1, 1) == "9") {
            printf "NUMERIC \n"
        } else {
            print $2
        }
    }
}

You really do not need BEGIN. And use "tempcopyfile.txt >newfile.txt" on command line.

I use gawk with -p flag. It can pretty print awk code.
This User Gave Thanks to yazu For This Post:
# 3  
Old 06-13-2011
Hi Team,

Atleast can someone help me on writing a Awk in shell script with this format,
Code:
if(substr($2,1,1)=="S"||substr($2,1,1)=="9")
{

if(index($2,"V")>0)
{
 if(substr($2,index($2,"V")-1,1)==")")
  { 
     templen=int(substr($2,index($2,"(")+1,(index($2,"V")-2)-index($2,"(")))
    
  }
  else
  {
    templen=index($2,"V")-1;
    if(substr($2,1,1)=="S")
    {
      templen=templen-1;
    }
   }

thank in advance,

Baski

---------- Post updated at 12:34 PM ---------- Previous update was at 12:03 PM ----------

Hi Yazu,

Thanks for your needful help,

can we use "else if" in AWK like,
Code:
else if(expression){
statements,
}

Thanks,
Baski

Last edited by Scott; 06-13-2011 at 07:44 AM.. Reason: Code tags
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