Leo Charre > dsvfields-1.04 > dsvfields

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NAME ^

dsvfields - given stdin dsv, print fields by name

DESCRIPTION ^

Essentially this can transform dsv input to strip down to something else This makes it easy to select fields, because you can do it by name instead of by position.

USAGE ^

dsvfields [OPTIONS]..

   -F            don't output fields line 
   -c            comment the fields line
   -f   string   fields, separated by non word chars (limitation)
   -h            help
   -v            version

USAGE EXAMPLES

For these examples our data.dsv is:

   # this is a table description, it is a comment
   # the next line however, will be deemed to be the fields line
   # fields = 'name:age:occupation'
   leo   : 34 : developer
   jane  : 21 : chemist
   marco : 45 : vagrant

Let's output age, and occupation cat data.dsv | dsvfields -f 'age occupation'

Just age and then name, no fields line cat data.dsv | dsvfields -f 'age name'

Same but and sort by age.. cat data.dsv | dsvfields -F -f 'age name' | sort

Same but sort by name, just flip the order.. cat data.dsv | dsvfields -F -f 'name age' | sort

CAVEATS ^

This will only work with dsv streams that have field names

The first line must have the field names the field separator in that line must be the same as in the data

Example correct field name lines with corresponding data line

   # fields = 'age name'
   leo 34
   
   # fields = "age:name"
   leo:34
   
   # FIELDS=age:name
   leo:34
   
   age name
   leo 34
   
   age,name
   leo,34
   
   age:name
   leo:34

AUTHOR ^

Leo Charre leocharre at cpan dot org

LICENSE ^

This package is free software; you can redistribute it and/or modify it under the same terms as Perl itself, i.e., under the terms of the "Artistic License" or the "GNU General Public License".

DISCLAIMER ^

This package is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the "GNU General Public License" for more details.

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