1#!/bin/sh 2# Get modification time of a file or directory and pretty-print it. 3 4scriptversion=2007-03-30.02 5 6# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007 Free Software 7# Foundation, Inc. 8# written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995 9# 10# This program is free software; you can redistribute it and/or modify 11# it under the terms of the GNU General Public License as published by 12# the Free Software Foundation; either version 2, or (at your option) 13# any later version. 14# 15# This program is distributed in the hope that it will be useful, 16# but WITHOUT ANY WARRANTY; without even the implied warranty of 17# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18# GNU General Public License for more details. 19# 20# You should have received a copy of the GNU General Public License 21# along with this program; if not, write to the Free Software Foundation, 22# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 23 24# As a special exception to the GNU General Public License, if you 25# distribute this file as part of a program that contains a 26# configuration script generated by Autoconf, you may include it under 27# the same distribution terms that you use for the rest of that program. 28 29# This file is maintained in Automake, please report 30# bugs to <bug-automake@gnu.org> or send patches to 31# <automake-patches@gnu.org>. 32 33case $1 in 34 '') 35 echo "$0: No file. Try \`$0 --help' for more information." 1>&2 36 exit 1; 37 ;; 38 -h | --h*) 39 cat <<\EOF 40Usage: mdate-sh [--help] [--version] FILE 41 42Pretty-print the modification time of FILE. 43 44Report bugs to <bug-automake@gnu.org>. 45EOF 46 exit $? 47 ;; 48 -v | --v*) 49 echo "mdate-sh $scriptversion" 50 exit $? 51 ;; 52esac 53 54# Prevent date giving response in another language. 55LANG=C 56export LANG 57LC_ALL=C 58export LC_ALL 59LC_TIME=C 60export LC_TIME 61 62# GNU ls changes its time format in response to the TIME_STYLE 63# variable. Since we cannot assume `unset' works, revert this 64# variable to its documented default. 65if test "${TIME_STYLE+set}" = set; then 66 TIME_STYLE=posix-long-iso 67 export TIME_STYLE 68fi 69 70save_arg1=$1 71 72# Find out how to get the extended ls output of a file or directory. 73if ls -L /dev/null 1>/dev/null 2>&1; then 74 ls_command='ls -L -l -d' 75else 76 ls_command='ls -l -d' 77fi 78# Avoid user/group names that might have spaces, when possible. 79if ls -n /dev/null 1>/dev/null 2>&1; then 80 ls_command="$ls_command -n" 81fi 82 83# A `ls -l' line looks as follows on OS/2. 84# drwxrwx--- 0 Aug 11 2001 foo 85# This differs from Unix, which adds ownership information. 86# drwxrwx--- 2 root root 4096 Aug 11 2001 foo 87# 88# To find the date, we split the line on spaces and iterate on words 89# until we find a month. This cannot work with files whose owner is a 90# user named `Jan', or `Feb', etc. However, it's unlikely that `/' 91# will be owned by a user whose name is a month. So we first look at 92# the extended ls output of the root directory to decide how many 93# words should be skipped to get the date. 94 95# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. 96set x`$ls_command /` 97 98# Find which argument is the month. 99month= 100command= 101until test $month 102do 103 shift 104 # Add another shift to the command. 105 command="$command shift;" 106 case $1 in 107 Jan) month=January; nummonth=1;; 108 Feb) month=February; nummonth=2;; 109 Mar) month=March; nummonth=3;; 110 Apr) month=April; nummonth=4;; 111 May) month=May; nummonth=5;; 112 Jun) month=June; nummonth=6;; 113 Jul) month=July; nummonth=7;; 114 Aug) month=August; nummonth=8;; 115 Sep) month=September; nummonth=9;; 116 Oct) month=October; nummonth=10;; 117 Nov) month=November; nummonth=11;; 118 Dec) month=December; nummonth=12;; 119 esac 120done 121 122# Get the extended ls output of the file or directory. 123set dummy x`eval "$ls_command \"\$save_arg1\""` 124 125# Remove all preceding arguments 126eval $command 127 128# Because of the dummy argument above, month is in $2. 129# 130# On a POSIX system, we should have 131# 132# $# = 5 133# $1 = file size 134# $2 = month 135# $3 = day 136# $4 = year or time 137# $5 = filename 138# 139# On Darwin 7.7.0 and 7.6.0, we have 140# 141# $# = 4 142# $1 = day 143# $2 = month 144# $3 = year or time 145# $4 = filename 146 147# Get the month. 148case $2 in 149 Jan) month=January; nummonth=1;; 150 Feb) month=February; nummonth=2;; 151 Mar) month=March; nummonth=3;; 152 Apr) month=April; nummonth=4;; 153 May) month=May; nummonth=5;; 154 Jun) month=June; nummonth=6;; 155 Jul) month=July; nummonth=7;; 156 Aug) month=August; nummonth=8;; 157 Sep) month=September; nummonth=9;; 158 Oct) month=October; nummonth=10;; 159 Nov) month=November; nummonth=11;; 160 Dec) month=December; nummonth=12;; 161esac 162 163case $3 in 164 ???*) day=$1;; 165 *) day=$3; shift;; 166esac 167 168# Here we have to deal with the problem that the ls output gives either 169# the time of day or the year. 170case $3 in 171 *:*) set `date`; eval year=\$$# 172 case $2 in 173 Jan) nummonthtod=1;; 174 Feb) nummonthtod=2;; 175 Mar) nummonthtod=3;; 176 Apr) nummonthtod=4;; 177 May) nummonthtod=5;; 178 Jun) nummonthtod=6;; 179 Jul) nummonthtod=7;; 180 Aug) nummonthtod=8;; 181 Sep) nummonthtod=9;; 182 Oct) nummonthtod=10;; 183 Nov) nummonthtod=11;; 184 Dec) nummonthtod=12;; 185 esac 186 # For the first six month of the year the time notation can also 187 # be used for files modified in the last year. 188 if (expr $nummonth \> $nummonthtod) > /dev/null; 189 then 190 year=`expr $year - 1` 191 fi;; 192 *) year=$3;; 193esac 194 195# The result. 196echo $day $month $year 197 198# Local Variables: 199# mode: shell-script 200# sh-indentation: 2 201# eval: (add-hook 'write-file-hooks 'time-stamp) 202# time-stamp-start: "scriptversion=" 203# time-stamp-format: "%:y-%02m-%02d.%02H" 204# time-stamp-end: "$" 205# End: 206