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Script Optimization - large delimited file, for loop with many greps

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Top Forums Shell Programming and Scripting Script Optimization - large delimited file, for loop with many greps
# 15  
Old 04-26-2011
Could you post what that section actually looks like, then? I'm tempted to say 'screw it' and write a filter in C that translates this dog's breakfast into sanely-separated newline-delimited data, but I'm not sure you have a compiler.
Last edited by Corona688; 04-26-2011 at 09:35 PM..
# 16  
Old 04-26-2011
Here are just a few lines and for simplicity sake they are all the same record type. I can attach a file if it makes things clearer.

From this ...
Code:
        ISA^00^          ^00^          ^ZZ^ABCD TPU       ^ZZ^FGI  TPM       ^110423^1817^U^00401^000139971^0^P^@*GS^FA^ABCD TPU^FGI  TPM^110423^1817^139971^X^002000*ST^997^0001*AK1^PO^916*AK2^830^000053942*AK5^A*AK9^A^1^1^1*SE^6^0001*GE^1^139971*IEA^1^000139971*                                                                 ISA¼00¼          ¼00¼          ¼ZZ¼ABCD TPU       ¼ZZ¼FGI  TPM       ¼110423¼1817¼U¼00401¼000139972¼0¼P¼@|GS¼FA¼ABCD TPU¼FGI  TPM¼110423¼1817¼139972¼X¼002000|ST¼997¼0001|AK1¼PO¼916|AK2¼830¼000053943|AK5¼A|AK9¼A¼1¼1¼1|SE¼6¼0001|GE¼1¼139972|IEA¼1¼000139972|                                                                 ISA|00|          |00|          |ZZ|ABCD TPU       |ZZ|FGI  TPM       |110423|1817|U|00401|000139973|0|P|@*GS|FA|ABCD TPU|FGI  TPM|110423|1817|139973|X|002000*ST|997|0001*AK1|PO|916*AK2|830|000053944*AK5|A*AK9|A|1|1|1*SE|6|0001*GE|1|139973*IEA|1|000139973*

To this ...
Code:
ISA^00^          ^00^          ^ZZ^ABCD TPU       ^ZZ^FGI  TPM       ^110423^1817^U^00401^000139971^0^P^@
GS^FA^ABCD TPU^FGI{TPM^110423^1817^139971^X^002000
ST^997^0001
AK1^PO^916
AK2^830^000053942
AK5^A
AK9^A^1^1^1
SE^6^0001
GE^1^139971
IEA^1^000139971
ISA¼00¼          ¼00¼          ¼ZZ¼ABCD TPU       ¼ZZ¼FGI  TPM       ¼110423¼1817¼U¼00401¼000139972¼0¼P¼@
GS¼FA¼ABCD-TPU¼FGI  TPM¼110423¼1817¼139972¼X¼002000
ST¼997¼0001
AK1¼PO¼916
AK2¼830¼000053943
AK5¼A
AK9¼A¼1¼1¼1
SE¼6¼0001
GE¼1¼139972
IEA¼1¼000139972
ISA|00|          |00|          |ZZ|ABCD TPU       |ZZ|FGI  TPM       |110423|1817|U|00401|000139973|0|P|@
GS|FA|ABCD,TPU|FGI  TPM|110423|1817|139973|X|002000
ST|997|0001
AK1|PO|916
AK2|830|000053944
AK5|A
AK9|A|1|1|1

---------- Post updated at 05:56 PM ---------- Previous update was at 05:50 PM ----------

It can be beastly ... there are commercial applications that do this kind of thing but politics and red tape ... it's must faster for me to write a script

although my skills to do so need work ... again, I can't say it enough, thanks for your help
# 17  
Old 04-26-2011
Yes, but do you have a C compiler? You're pretty much going to need to parse this character-by-character to get the delimiters right, and that's not efficient in any language but C.
# 18  
Old 04-27-2011
no Corona688, I don't have a C compiler Smilie

If it helps the token seperator (pos 4) and the line terminator (pos 107) are always in the same position, in the first line (ISA) ... the ISA line is fixed length.

This is how I'd do it with my inefficient command-line type way ... however sed doesn't work well with some delimiters

Code:
#!/usr/bin/ksh
perl -p0e 's/[\W_]ISA[\W_]/\n$&/g' orig_file>all_isas
csplit -ks -n 6 -f isa_each all_isas /^ISA/ {100000}
ls -1 isa_each>filelist
 
for file in `ls -1 isa_each*`;
do
delimseg=`grep "^ISA" newisa_1|cut -c4`
delimline=`grep "^ISA" newisa_1|cut -c107`
sed 's/\$delimseg/~/g' $file | sed 's/\$delimline/x0D/g' >$file.cleaned
done
 
and then I'd run your awk script

I was able to use your code to work with the first scenario but I don't understand awk enough to make it work in this scenario
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