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# pm-jadate3.rc -- 'Tue Nov 25 19:32:57' date parser from variable INPUT
#
# File id
#
# Copyright (C) 1997-2010 Jari Aalto
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version
#
# This program 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 at
# <http://www.gnu.org/copyleft/gpl.html>.
#
# Description
#
# This includerc parses date from variable INPUT which has string
#
# "Week, Month dayNbr hh:mm:ss yyyy",
#
# Example
#
# Tue Nov 25 19:32:57 1997
#
# Returned values
#
# YYYY = 4 digits
# YY = 2 digits
# MON = 3 characters
# MM = 2 digits
# DAY = 3 characters
# DD = 2 digits
# hh = 2 digits
# mm = 2 digits
# ss = 2 sigits
#
# Variable ERROR is set to "yes" if it couldn't recognize the INPUT.
#
# Required settings
#
# PMSRC must point to source directory of procmail code. This subroutine
# will include pm-javar.rc from there.
#
# Call arguments (variables to set before calling)
#
# INPUT = string-to-parse
#
# Usage example
#
# The first *Received* header will tell when the message was received
# by the mailserver. Parse the date and avoid calling expensive `date'
# command.
#
# PMSRC = $HOME/pm
# RC_DATE_WMDT = $PMSRC/pm-jadate4.rc #Week-Month-Day-Time parser
#
# # Get time from X-From-Line: Which was added by my MDA
# # X-From-Line: procmail-request@informatik.rwth-aachen.de \
# # Tue Nov 25 19:32:57 1997
#
# :0 c
# *$ ^X-From-Line:\/.*
# {
# INPUT = $MATCH
#
# # Turn off the logging while executing subroutine
#
# VERBOSE=off INCLUDERC = $RC_DATE_WMDT VERBOSE=on
#
# :0
# * ERROR ?? yes
# {
# # Use some other way to get the time or shout loudly
# }
# }
#
# Change Log (none)
# .................................................... &initialising ...
id = "pm-jadate3.rc"
dummy = "
========================================================================
$id: init:
"
:0
* ! WSPC ?? ( )
{
INCLUDERC = $PMSRC/pm-javar.rc
}
# ..................................................... &output-vars ...
# output variables
# Kill following variables, listed one by one here:
YYYY MM MON DD DAY hh mm ss
ERROR = "yes" # set defualt value
# ........................................................... &do-it ...
# Check that input is something like: Thu, 13 Nov 1997
dummy = "$id: Parse date like [Tue Nov 25 19:32:57 19:00:00 1997]"
dummy = "$id: INPUT = $INPUT" # show what we try to match
:0 D
* INPUT ?? $ $s*\/[SMTWF]$a$a[,$WSPC]+$a$a$a$s+$d+$s+$d$d:.*
{
INPUT = $MATCH
:0 D
* INPUT ?? ^\/[A-Z]..
{
DAY = $MATCH
}
:0 D
*$ INPUT ?? ^...[,$WSPC]\/[A-Z]..
{
MON = $MATCH
}
:0
*$ INPUT ?? ^...[,$WSPC]...$s+\/$d$d
{
DD = $MATCH
}
:0 E # else
*$ INPUT ?? ^...[,$WSPC]...$s+\/$d
{
DD = "0$MATCH"
}
# ........................................................ &time ...
# Move to hh:mm:ss section
:0
*$ INPUT ?? ^...[,$WSPC]...+$s$d+$s+\/.*
{
INPUT = $MATCH
}
:0
*$ INPUT ?? ^\/$d$d
{
hh = $MATCH
}
:0
*$ INPUT ?? ^..:\/$d$d
{
mm = $MATCH
}
:0
*$ INPUT ?? ^..:..:\/$d$d
{ ss = $MATCH }
# ........................................................ &year ...
:0
*$ INPUT ?? ^..:..:..$s+\/$d$d$d$d
{
YYYY = $MATCH
}
# If this last recipe succeeds, then the whole string has been parsed.
:0
* YYYY ?? ^..\/..
{
YY = $MATCH ERROR = "no"
}
# Now reverse engineer to the numer, David Tamkin <dattier@miso.wwa.com>
# technically one should use $\monthnym but here it doesn't matter
# If user gave invalid input, will not match
:0
*$ mm2nbr ?? $MON\/..
{
MM = $MATCH
}
}
dummy = "$id: end:"
# end of file pm-jadate.rc
|
