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Full Discussion: Insert blanks for missing fields and reformat to csv
Top Forums Shell Programming and Scripting Insert blanks for missing fields and reformat to csv Post 302344486 by LoveSquid on Monday 17th of August 2009 05:56:10 PM
Old 08-17-2009
[Bash] Insert blanks for missing fields and reorder
I am trying to process inventory addition files for insertion into a MySQL database. The format convention is book UIEE. If the field for the add file has no data, the field is NOT included in the upload file, so I need to add a blank/empty for any missing fields. The I need to create a csv or tsv file for the actual insertion. I have the main conversion part down, but I am having issues with inserting the blanks. I need to check if it is present first.

Here is the code I have so far:
Code:
#!/usr/bin/env bash
#
# This is a script to process incoming add files
#
# Find the file
file_name=`find . -name "*part*"`;
# Change file permissions
chmod 744 $file_name;
# Convert to Unix format and remove ^M char (change to fromdos on server)
`dos2unix $file_name`;
# Remove the top 5 lines if User is on the first, escape existing ";" 
# and insert a temp char set on blank line at end of each record
if grep "User" $file_name; then
    sed '1,5d' $file_name | sed -e 's/;/\\;/g' -e 's/"/\\"/g' -e 's/^$/{}/g' > trimAdd;
else echo " ";
fi
# Swap a ";" for Win carriage return and swap a newline at end of records for the temp char
tr '\012' ';' < trimAdd | sed 's/{};/\n/g' > swapAdd;
# check record for missing fields and insert blanks/NULLS where necessary

Here is a sample of the file I am processing (routinely contains 1200+ lines and yes the last line is empty:
Code:
User
BOOKS
2009-08-06
14:16:52

UR|007815
TI|Vintage Motorsport : 1995 Jan/Feb
PR|17.50
BD|Soft Cover
NT| 82 pgs; magazine format
CO|1
SD|2009-08-06 14:04:20
CA|Transportation
MT|Transportation
DP|1995
JK|No Jacket
XA|4
XB|1
XC|BO
XD|S

UR|007816
TI|Vintage Motorsport : 1992 Nov/Dec
PR|17.50
BD|Soft Cover
NT| 82 pgs; magazine format
CO|1
SD|2009-08-06 14:04:20
CA|Transportation
MT|Transportation
DP|1992
JK|No Jacket
XA|4
XB|1
XC|BO
XD|S

UR|007817
TI|Vintage Motorsport : 1995 Mar/Apr
PR|17.50
BD|Soft Cover
NT| 82 pgs; magazine format
CO|1
SD|2009-08-06 14:04:20
CA|Transportation
MT|Transportation
DP|1995
JK|No Jacket
XA|4
XB|1
XC|BO
XD|S

UR|007818
TI|Vintage Motorsport : 1993 Nov/Dec
PR|17.50
BD|Soft Cover
NT| 82 pgs; magazine format
CO|1
SD|2009-08-06 14:04:20
CA|Transportation
MT|Transportation
DP|1993
JK|No Jacket
XA|4
XB|1
XC|BO
XD|S

UR|007819
TI|Vintage Motorsport : 1995 Jul/Aug
PR|17.50
BD|Soft Cover
NT| 82 pgs; magazine format
CO|1
SD|2009-08-06 14:04:20
CA|Transportation
MT|Transportation
DP|1995
JK|No Jacket
XA|4
XB|1
XC|BO
XD|S

Any help, even it is to point into a better direction is greatly appreciated. I am not familiar with awk, but I do know sed.

---------- Post updated 08-17-09 at 05:56 PM ---------- Previous update was 08-16-09 at 10:34 PM ----------

Here is another failed attempt, but perhaps it will give a better idea of what I am trying to accomplish:

Code:
#!/usr/bin/env bash
# Find the file
file_name=`find . -name "*part*"`;
# Change file permissions
chmod 744 $file_name;
# Convert to Unix format and remove ^M char
`dos2unix $file_name`;
# Remove the top 5 lines if User is on the first, escape existing ";" 
# and insert a temp char set on blank line at end of each record
if grep "User" $file_name; then
    sed '1,5d' $file_name | sed -e 's/,/\\,/g' -e 's/"/\\"/g' -e 's/^$/{}/g' > trimAdd;
else echo " ";
fi
# Swap a ";" for Win carriage return and swap a newline at end of records for the temp char
tr '\012' ',' < trimAdd | sed 's/{},/\n/g' > swapAdd;
sed 's/.\*/UR\|.\*;TI\|.\*;PR\|.\*;AA\|.\*;BN\|.\*;BD\|.\*;NT\|.\*;CO\|.\*;LO\|.\*;PC\|.\*;SD\|.\*;CN\|.\*;CA\|.\*;MT\|.\*;PP\|.\*;DP\|.\*;KE\|.\*;JK\|.\*;SG\|.\*;S1\|.\*;ED\|.\*;PU\|.\*;XA\|.\*;XB\|.\*;XC\|.\*;XD\|.\*;/g' swapAdd > finAdd;

Again, any help, even if to only point out errors, might help me get past this sticking point.

Thanks in advance!
Last edited by LoveSquid; 08-17-2009 at 05:36 PM..
 

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