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Old 12-19-2012, 09:13 AM   #1
Registered: Mar 2012
Posts: 38

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Language pairing of files


I have in a directory a couple of files in different languages with names like:


I want to create a 2 columns list with for a language pair. For example for the en de language pair.

bb_aaaaaa-aaaa-en.html bb_aaaaaa-aaaa-de.html
vv_aaaaaa-aaaa-en.html vv_aaaaaa-aaaa-de.html
ff_aaaaaa-aaaa-en.html ff_aaaaaa-aaaa-de.html

I have a bash script but it doesn't work.



cat list.txt | awk '/*__.*__'$L1'.*__'$L2'/{
  for (i=1; i <= NF; i++)
    if (index($i, "__'$L1'.") > 0) { printf("%s", $i); break; }
  for (   ; i <= NF; i++)
    if (index($i, "__'$L2'.") > 0) printf(" %s", $i);
  printf("\n"); }'
Could you help me please? Thank you in advance!
Old 12-19-2012, 07:05 PM   #2
Senior Member
Registered: Dec 2004
Location: Olympia, WA, USA
Distribution: Fedora, (K)Ubuntu
Posts: 4,170

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Well, there are several problems with your code. For example:
  1. You are using cat to send your data to awk, but awk can do it's own input. The form awk '<code>' <input> is normally preferred to cat <input> | awk '<code>' since it avoids a unnecessary process creation and pipe.
  2. The RE you're using ('/*__.*__'$L1'.*__'$L2'/') does not match any line in your (sample) input file. I suspect you may have meant to use something like '/^[[:alpha:]_][[:alnum:]-_]*[_-]+'${L1}'[.]+.* +[[:alpha:]_][[:alnum:]-_]*[_-]+'${L2}'[.]*[[:alnum:]]*$'
  3. If you pasted your code into you post, perhaps the backslashes escaping your dots were stripped, but, if not, and you want a literal dot in your RE, the [.] form should work.
  4. The logic in you code assumes that $L1 will always proceed $L2 for any pair, but you don't check that your input file list is sorted, nor that $L1 sorts before $L2, nor do you check the value of LC_NAME or LC_COLLATE. (Check the locale command output.)

Last edited by PTrenholme; 12-19-2012 at 07:11 PM.
Old 12-19-2012, 10:59 PM   #3
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Registered: Apr 2010
Location: Apex, NC, USA
Distribution: Ubuntu
Posts: 1,342

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Try this ...
join -j2 $InFile $InFile                                         \
|sed 's/\( .._\)\(.*\)\( .._\)\(.*\)/\1 \3 \1\2\3\4/'            \
|awk -F " " '{if ($1==$2 && $3!=$4) print $3 " " $4}'            \
|sed 's/\(.*\)\(\-..\.\)\(.*\)\(\-..\.\)\(.*\)/\1 \2 \3 \4 \5/'  \
|sort -k2,2                                                      \
|awk -F " " '{print $1$2$3 " " $4$5$6}'                          \
> $OutFile
Daniel B. Martin


awk, bash, files

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