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Convert delimited to fixed length

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# 1  
Old 10-25-2005
Convert delimited to fixed length

Hi, I have to change a tab delimited file to a fixed length file. For text fields I need to left justify and NULL fill to the right and for number fields I need to right justify and zero fill to the left. If there are spaces between words in a text field I need to keep them as spaces. I am using korn shell and AIX. Here is a portion of a flat file that I am working with (First field is text and 12 characters long and second is a number 10 characters long) -
Bob Smith<<tab>>139.90
Kathy Reys<<tab>>-40.50

Here is the output that I need -
Bob Smith 0000139.90
Kathy Reys 0000-40.50
# 2  
Old 10-25-2005
What an odd way to handle negative numbers...
#! /usr/bin/ksh
typeset -L13 name
typeset -R10 val2
exec < datafile
while read name val ; do
         echo "$name $val2"
exit 0

# 3  
Old 10-26-2005
Got me further

Thanks for that help, that got me most of the way to where I needed. Do you know how to do the NULL padding after the strings instead of space padding? I thought I figured it out with a -Z on the typeset, but it doesn't seem to be working. Thanks again for the help.
# 4  
Old 10-26-2005
Sheesh, what a crazy format. ksh uses strings which are null terminated and this makes working with nulls virtually impossible. We can pad with a substitute character and then translate all occurences of the sunstitute character to nulls as the last operation.
#! /usr/bin/ksh
typeset -L13 name2
typeset -R10 val2
exec < data
while read name val ; do
        echo "$name2 $val2"
done | tr $PAD "\000"
exit 0

# 5  
Old 10-26-2005
That's it!!!

Thanks for your help.
# 6  
Old 10-26-2005
ruby -F\011 -nale'print $F[0].ljust(12,0.chr),$F[1].rjust(10,"0")' file

# 7  
Old 10-26-2005
1 More Thing

I thought I had this figured out, but I'm running into another scenario that I need help with. Do you know how I can fix this if I have no data in a field, <<tab>><<tab>>? What is happening is that it's just going to the next field where there is data and using that, but I need it to use the empty field. Not sure if I explained that well, so here's an example -
Input file - (first field left justified NULL padded (10bytes), second field left justified NULL padded (1 byte), and third field left justified NULL padded (10bytes))
Bob Smith<<tab>><<tab>>Susan Smit
Kathy Reys<<tab>>A<<tab>>Ron Davis

Output file currently getting -
Bob Smith<<NULL>>Susan Smit
Kathy ReysARon Davis<<NULL>>

Needed output -
Bob Smith<<NULL>><<NULL>>Susan Smit
Kathy ReysARonDavis<<NULL>>

Hopefully that makes sense, if not I can try to explain more.

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