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Top Forums Shell Programming and Scripting Date format change in a csv file Post 302948962 by Don Cragun on Sunday 5th of July 2015 04:04:23 AM
Old 07-05-2015
Hi Smiling Dragon, cfajohnson, Scrutinizer, & Aia,
If you look closely at the 1st post in this thread, you'll notice that the request is to find timestamps in unspecified fields in a CSV formatted file where the input timestamps are in the format MM/DD/YYYY HH:MM:SS and the output timestamps are supposed to be one month later in the format DD/Mon/YYYY HH:MM:SS.

So, there is no reason to believe that using / as a field separator on an input line will yield only three fields, that the first field will just contain a month number, nor that the third field will only contain a year and a timestamp. None of the code suggested so far makes any attempt to adjust the output month, to adjust the day field if the output month has fewer days than the input month, nor to adjust the year if the input month is 12.

Three days ago (less than an hour after the original post), I asked the submitter to provide us with more details and to show us what had been tried to solve this problem. I figured that the code that would be shown to us would clarify if the conversion from month number 06 to abbreviated month name Jul was intentional or a typo, would clarify if the field separator in the CSV file format was a comma or some other character, and would clarify whether every input field needed to be processed or if only certain fields need to be processed. Unfortunately, I am still waiting for a response.
This User Gave Thanks to Don Cragun For This Post:
 

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Data::FormValidator::Constraints::Dates(3pm)		User Contributed Perl Documentation	      Data::FormValidator::Constraints::Dates(3pm)

NAME
Data::FormValidator::Constraints::Dates - Validate Dates and Times SYNOPSIS
use Data::FormValidator::Constraints::Dates qw(date_and_time); # In a DFV profile... constraint_methods => { # 'pp' denotes AM|PM for 12 hour representation my_time_field => date_and_time('MM/DD/YYYY hh:mm:ss pp'), } DESCRIPTION
date_and_time Note: This is a new module is a new addition to Data::FormValidator and is should be considered "Beta". This constraint creates a regular expression based on the format string passed in to validate your date against. It understands the following symbols: Y year (numeric) M month (numeric) D day (numeric) h hour m minute s second p AM|PM Other parts of the string become part of the regular expression, so you can do perlish things like this to create more complex expressions: 'MM?/DD?/YYYY|YYYY-MM?-DD?' Internally Date::Calc is used to test the functions. BACKWARDS COMPATIBILITY
This older, more awkward interface is supported: # In a Data::FormValidator Profile: validator_packages => [qw(Data::FormValidator::Constraints::Dates)], constraints => { date_and_time_field => { constraint_method => 'date_and_time', params=>['MM/DD/YYYY hh:mm:ss pp'], # 'pp' denotes AM|PM for 12 hour representation }, } SEE ALSO
o Data::FormValidator o Data::FormValidator::Constraints::DateTime - This alternative features returning dates as DateTime objects and validating against the date formats required for the MySQL and PostgreSQL databases. AUTHOR
Mark Stosberg, <mark@summersault.com> Featuring clever code by Jan Krynicky. COPYRIGHT AND LICENSE
Copyright 2003-2005 by Mark Stosberg This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. perl v5.14.2 2011-11-25 Data::FormValidator::Constraints::Dates(3pm)
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