xref: /netbsd-src/external/gpl2/diffutils/dist/config/mdate-sh (revision 75f6d617e282811cb173c2ccfbf5df0dd71f7045)
1*75f6d617Schristos#!/bin/sh
2*75f6d617Schristos# Get modification time of a file or directory and pretty-print it.
3*75f6d617Schristos# Copyright 1995, 1996, 1997 Free Software Foundation, Inc.
4*75f6d617Schristos# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
5*75f6d617Schristos#
6*75f6d617Schristos# This program is free software; you can redistribute it and/or modify
7*75f6d617Schristos# it under the terms of the GNU General Public License as published by
8*75f6d617Schristos# the Free Software Foundation; either version 2, or (at your option)
9*75f6d617Schristos# any later version.
10*75f6d617Schristos#
11*75f6d617Schristos# This program is distributed in the hope that it will be useful,
12*75f6d617Schristos# but WITHOUT ANY WARRANTY; without even the implied warranty of
13*75f6d617Schristos# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14*75f6d617Schristos# GNU General Public License for more details.
15*75f6d617Schristos#
16*75f6d617Schristos# You should have received a copy of the GNU General Public License
17*75f6d617Schristos# along with this program; if not, write to the Free Software Foundation,
18*75f6d617Schristos# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
19*75f6d617Schristos
20*75f6d617Schristos# As a special exception to the GNU General Public License, if you
21*75f6d617Schristos# distribute this file as part of a program that contains a
22*75f6d617Schristos# configuration script generated by Autoconf, you may include it under
23*75f6d617Schristos# the same distribution terms that you use for the rest of that program.
24*75f6d617Schristos
25*75f6d617Schristos# Prevent date giving response in another language.
26*75f6d617SchristosLANG=C
27*75f6d617Schristosexport LANG
28*75f6d617SchristosLC_ALL=C
29*75f6d617Schristosexport LC_ALL
30*75f6d617SchristosLC_TIME=C
31*75f6d617Schristosexport LC_TIME
32*75f6d617Schristos
33*75f6d617Schristos# Get the extended ls output of the file or directory.
34*75f6d617Schristos# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
35*75f6d617Schristosif ls -L /dev/null 1>/dev/null 2>&1; then
36*75f6d617Schristos  set - x`ls -L -l -d $1`
37*75f6d617Schristoselse
38*75f6d617Schristos  set - x`ls -l -d $1`
39*75f6d617Schristosfi
40*75f6d617Schristos# The month is at least the fourth argument
41*75f6d617Schristos# (3 shifts here, the next inside the loop).
42*75f6d617Schristosshift
43*75f6d617Schristosshift
44*75f6d617Schristosshift
45*75f6d617Schristos
46*75f6d617Schristos# Find the month.  Next argument is day, followed by the year or time.
47*75f6d617Schristosmonth=
48*75f6d617Schristosuntil test $month
49*75f6d617Schristosdo
50*75f6d617Schristos  shift
51*75f6d617Schristos  case $1 in
52*75f6d617Schristos    Jan) month=January; nummonth=1;;
53*75f6d617Schristos    Feb) month=February; nummonth=2;;
54*75f6d617Schristos    Mar) month=March; nummonth=3;;
55*75f6d617Schristos    Apr) month=April; nummonth=4;;
56*75f6d617Schristos    May) month=May; nummonth=5;;
57*75f6d617Schristos    Jun) month=June; nummonth=6;;
58*75f6d617Schristos    Jul) month=July; nummonth=7;;
59*75f6d617Schristos    Aug) month=August; nummonth=8;;
60*75f6d617Schristos    Sep) month=September; nummonth=9;;
61*75f6d617Schristos    Oct) month=October; nummonth=10;;
62*75f6d617Schristos    Nov) month=November; nummonth=11;;
63*75f6d617Schristos    Dec) month=December; nummonth=12;;
64*75f6d617Schristos  esac
65*75f6d617Schristosdone
66*75f6d617Schristos
67*75f6d617Schristosday=$2
68*75f6d617Schristos
69*75f6d617Schristos# Here we have to deal with the problem that the ls output gives either
70*75f6d617Schristos# the time of day or the year.
71*75f6d617Schristoscase $3 in
72*75f6d617Schristos  *:*) set `date`; eval year=\$$#
73*75f6d617Schristos       case $2 in
74*75f6d617Schristos	 Jan) nummonthtod=1;;
75*75f6d617Schristos	 Feb) nummonthtod=2;;
76*75f6d617Schristos	 Mar) nummonthtod=3;;
77*75f6d617Schristos	 Apr) nummonthtod=4;;
78*75f6d617Schristos	 May) nummonthtod=5;;
79*75f6d617Schristos	 Jun) nummonthtod=6;;
80*75f6d617Schristos	 Jul) nummonthtod=7;;
81*75f6d617Schristos	 Aug) nummonthtod=8;;
82*75f6d617Schristos	 Sep) nummonthtod=9;;
83*75f6d617Schristos	 Oct) nummonthtod=10;;
84*75f6d617Schristos	 Nov) nummonthtod=11;;
85*75f6d617Schristos	 Dec) nummonthtod=12;;
86*75f6d617Schristos       esac
87*75f6d617Schristos       # For the first six month of the year the time notation can also
88*75f6d617Schristos       # be used for files modified in the last year.
89*75f6d617Schristos       if (expr $nummonth \> $nummonthtod) > /dev/null;
90*75f6d617Schristos       then
91*75f6d617Schristos	 year=`expr $year - 1`
92*75f6d617Schristos       fi;;
93*75f6d617Schristos  *) year=$3;;
94*75f6d617Schristosesac
95*75f6d617Schristos
96*75f6d617Schristos# The result.
97*75f6d617Schristosecho $day $month $year
98