finding date numeral from file and check the validity of date format Post: 302574333

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Top Forums Shell Programming and Scripting finding date numeral from file and check the validity of date format Post 302574333 by Klashxx on Thursday 17th of November 2011 05:53:50 AM

11-17-2011

Registered User

If perl is ok, this is the equivalent for the dates:

Code:

 perl -n -e '/(\d+-*\d*-*\d*)/;print $1."\n";' file

And for the validation, you can star with:

Code:

#!/usr/bin/env ksh

validaF ()
{
fecha="${1}"

echo "${fecha}"|perl -n -e '
   if ( m!^((?:19|20)\d\d)(0[1-9]|1[012])(0[1-9]|[12][0-9]|3[01])$!) {
      # $1 -> anyo  $2 -> mes , $3 -> dia
      if ($3 == 31 and ($2 == 4 or $2 == 6 or $2 == 9 or $2 == 11)) {
         print "0" ; # Meses con 30 dias
         }
      elsif ($3 >= 30 and $2 == 2) {
         print "0" ; # Febrero nunca 30 o 31
         } 
      elsif ($2 == 2 and $3 == 29 and not ($1 % 4 == 0 and ($1 % 100 != 0 or $1 % 400 == 0))) {
         print "0" ; # 29 de Febrero cuando no es bisiesto
         } 
      else {
         print "Correct date !: $_ \n"; # Fecha valida
         }
      } 
    else {
       print "KO: $_" ; # Sin formato de fecha
    }'
}

validaF 20110811
validaF 20110841

Of course you need to adapt the regex to match the rest of the date formats.

Klashxx

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NAME

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SYNOPSIS

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DESCRIPTION

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       If the output is CSV, the fields must be specified in order.

EXAMPLES

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OPTIONS

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       -d, --db DATABASE
	      database to use

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