1#!/bin/sh 2# Get modification time of a file or directory and pretty-print it. 3 4scriptversion=2004-12-08.12 5 6# Copyright (C) 1995, 1996, 1997, 2003, 2004 Free Software Foundation, Inc. 7# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995 8# 9# This program is free software; you can redistribute it and/or modify 10# it under the terms of the GNU General Public License as published by 11# the Free Software Foundation; either version 2, or (at your option) 12# any later version. 13# 14# This program is distributed in the hope that it will be useful, 15# but WITHOUT ANY WARRANTY; without even the implied warranty of 16# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17# GNU General Public License for more details. 18# 19# You should have received a copy of the GNU General Public License 20# along with this program; if not, write to the Free Software Foundation, 21# Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 22 23# As a special exception to the GNU General Public License, if you 24# distribute this file as part of a program that contains a 25# configuration script generated by Autoconf, you may include it under 26# the same distribution terms that you use for the rest of that program. 27 28# This file is maintained in Automake, please report 29# bugs to <bug-automake@gnu.org> or send patches to 30# <automake-patches@gnu.org>. 31 32case $1 in 33 '') 34 echo "$0: No file. Try \`$0 --help' for more information." 1>&2 35 exit 1; 36 ;; 37 -h | --h*) 38 cat <<\EOF 39Usage: mdate-sh [--help] [--version] FILE 40 41Pretty-print the modification time of FILE. 42 43Report bugs to <bug-automake@gnu.org>. 44EOF 45 exit 0 46 ;; 47 -v | --v*) 48 echo "mdate-sh $scriptversion" 49 exit 0 50 ;; 51esac 52 53# Prevent date giving response in another language. 54LANG=C 55export LANG 56LC_ALL=C 57export LC_ALL 58LC_TIME=C 59export LC_TIME 60 61save_arg1="$1" 62 63# Find out how to get the extended ls output of a file or directory. 64if ls -L /dev/null 1>/dev/null 2>&1; then 65 ls_command='ls -L -l -d' 66else 67 ls_command='ls -l -d' 68fi 69 70# A `ls -l' line looks as follows on OS/2. 71# drwxrwx--- 0 Aug 11 2001 foo 72# This differs from Unix, which adds ownership information. 73# drwxrwx--- 2 root root 4096 Aug 11 2001 foo 74# 75# To find the date, we split the line on spaces and iterate on words 76# until we find a month. This cannot work with files whose owner is a 77# user named `Jan', or `Feb', etc. However, it's unlikely that `/' 78# will be owned by a user whose name is a month. So we first look at 79# the extended ls output of the root directory to decide how many 80# words should be skipped to get the date. 81 82# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. 83set x`ls -l -d /` 84 85# Find which argument is the month. 86month= 87command= 88until test $month 89do 90 shift 91 # Add another shift to the command. 92 command="$command shift;" 93 case $1 in 94 Jan) month=January; nummonth=1;; 95 Feb) month=February; nummonth=2;; 96 Mar) month=March; nummonth=3;; 97 Apr) month=April; nummonth=4;; 98 May) month=May; nummonth=5;; 99 Jun) month=June; nummonth=6;; 100 Jul) month=July; nummonth=7;; 101 Aug) month=August; nummonth=8;; 102 Sep) month=September; nummonth=9;; 103 Oct) month=October; nummonth=10;; 104 Nov) month=November; nummonth=11;; 105 Dec) month=December; nummonth=12;; 106 esac 107done 108 109# Get the extended ls output of the file or directory. 110set x`eval "$ls_command \"\$save_arg1\""` 111 112# Remove all preceding arguments 113eval $command 114 115# Get the month. Next argument is day, followed by the year or time. 116case $1 in 117 Jan) month=January; nummonth=1;; 118 Feb) month=February; nummonth=2;; 119 Mar) month=March; nummonth=3;; 120 Apr) month=April; nummonth=4;; 121 May) month=May; nummonth=5;; 122 Jun) month=June; nummonth=6;; 123 Jul) month=July; nummonth=7;; 124 Aug) month=August; nummonth=8;; 125 Sep) month=September; nummonth=9;; 126 Oct) month=October; nummonth=10;; 127 Nov) month=November; nummonth=11;; 128 Dec) month=December; nummonth=12;; 129esac 130 131day=$2 132 133# Here we have to deal with the problem that the ls output gives either 134# the time of day or the year. 135case $3 in 136 *:*) set `date`; eval year=\$$# 137 case $2 in 138 Jan) nummonthtod=1;; 139 Feb) nummonthtod=2;; 140 Mar) nummonthtod=3;; 141 Apr) nummonthtod=4;; 142 May) nummonthtod=5;; 143 Jun) nummonthtod=6;; 144 Jul) nummonthtod=7;; 145 Aug) nummonthtod=8;; 146 Sep) nummonthtod=9;; 147 Oct) nummonthtod=10;; 148 Nov) nummonthtod=11;; 149 Dec) nummonthtod=12;; 150 esac 151 # For the first six month of the year the time notation can also 152 # be used for files modified in the last year. 153 if (expr $nummonth \> $nummonthtod) > /dev/null; 154 then 155 year=`expr $year - 1` 156 fi;; 157 *) year=$3;; 158esac 159 160# The result. 161echo $day $month $year 162 163# Local Variables: 164# mode: shell-script 165# sh-indentation: 2 166# eval: (add-hook 'write-file-hooks 'time-stamp) 167# time-stamp-start: "scriptversion=" 168# time-stamp-format: "%:y-%02m-%02d.%02H" 169# time-stamp-end: "$" 170# End: 171