#!/bin/bash
#
# stamp-iso2oo
#
# Convert the first time stamp in ISO format in each line into something
# less-than-ideally-intelligent software can understand.
# Think  OpenOffice/LibreOffice here.
# Filter stdin to stdout.
# Currently the ISO time stamp has to be in the 22nd century.
#
# ISO time stamp formats accepted (regex):
#   20......[T_-]
#
# Copyright (C) by Volker Kuhlmann, http://volker.top.geek.nz/contact.html
# All rights reserved.
# Released under the terms of the GNU General Public License (GPL) Version 2.
# See http://www.gnu.org/ for details.
#
# Volker Kuhlmann
#   17, 19 Jun 2011
#

globalsub=""  	# Replace only the first stamp.
#globalsub="g"	# Replace all matching stamps.

export LC_ALL=C

gawk '
    {
    	print \
	gensub("20([0-9][0-9])([0-9][0-9])([0-9][0-9])[T_-]", 
	       "20\\1-\\2-\\3 ", "'"$globalsub"'")
    }
'