1#!/bin/sh 2# Get modification time of a file or directory and pretty-print it. 3 4scriptversion=2005-02-07.09 5 6# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 62save_arg1="$1" 63 64# Find out how to get the extended ls output of a file or directory. 65if ls -L /dev/null 1>/dev/null 2>&1; then 66 ls_command='ls -L -l -d' 67else 68 ls_command='ls -l -d' 69fi 70 71# A `ls -l' line looks as follows on OS/2. 72# drwxrwx--- 0 Aug 11 2001 foo 73# This differs from Unix, which adds ownership information. 74# drwxrwx--- 2 root root 4096 Aug 11 2001 foo 75# 76# To find the date, we split the line on spaces and iterate on words 77# until we find a month. This cannot work with files whose owner is a 78# user named `Jan', or `Feb', etc. However, it's unlikely that `/' 79# will be owned by a user whose name is a month. So we first look at 80# the extended ls output of the root directory to decide how many 81# words should be skipped to get the date. 82 83# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. 84set x`ls -l -d /` 85 86# Find which argument is the month. 87month= 88command= 89until test $month 90do 91 shift 92 # Add another shift to the command. 93 command="$command shift;" 94 case $1 in 95 Jan) month=January; nummonth=1;; 96 Feb) month=February; nummonth=2;; 97 Mar) month=March; nummonth=3;; 98 Apr) month=April; nummonth=4;; 99 May) month=May; nummonth=5;; 100 Jun) month=June; nummonth=6;; 101 Jul) month=July; nummonth=7;; 102 Aug) month=August; nummonth=8;; 103 Sep) month=September; nummonth=9;; 104 Oct) month=October; nummonth=10;; 105 Nov) month=November; nummonth=11;; 106 Dec) month=December; nummonth=12;; 107 esac 108done 109 110# Get the extended ls output of the file or directory. 111set dummy x`eval "$ls_command \"\$save_arg1\""` 112 113# Remove all preceding arguments 114eval $command 115 116# Because of the dummy argument above, month is in $2. 117# 118# On a POSIX system, we should have 119# 120# $# = 5 121# $1 = file size 122# $2 = month 123# $3 = day 124# $4 = year or time 125# $5 = filename 126# 127# On Darwin 7.7.0 and 7.6.0, we have 128# 129# $# = 4 130# $1 = day 131# $2 = month 132# $3 = year or time 133# $4 = filename 134 135# Get the month. 136case $2 in 137 Jan) month=January; nummonth=1;; 138 Feb) month=February; nummonth=2;; 139 Mar) month=March; nummonth=3;; 140 Apr) month=April; nummonth=4;; 141 May) month=May; nummonth=5;; 142 Jun) month=June; nummonth=6;; 143 Jul) month=July; nummonth=7;; 144 Aug) month=August; nummonth=8;; 145 Sep) month=September; nummonth=9;; 146 Oct) month=October; nummonth=10;; 147 Nov) month=November; nummonth=11;; 148 Dec) month=December; nummonth=12;; 149esac 150 151case $3 in 152 ???*) day=$1;; 153 *) day=$3; shift;; 154esac 155 156# Here we have to deal with the problem that the ls output gives either 157# the time of day or the year. 158case $3 in 159 *:*) set `date`; eval year=\$$# 160 case $2 in 161 Jan) nummonthtod=1;; 162 Feb) nummonthtod=2;; 163 Mar) nummonthtod=3;; 164 Apr) nummonthtod=4;; 165 May) nummonthtod=5;; 166 Jun) nummonthtod=6;; 167 Jul) nummonthtod=7;; 168 Aug) nummonthtod=8;; 169 Sep) nummonthtod=9;; 170 Oct) nummonthtod=10;; 171 Nov) nummonthtod=11;; 172 Dec) nummonthtod=12;; 173 esac 174 # For the first six month of the year the time notation can also 175 # be used for files modified in the last year. 176 if (expr $nummonth \> $nummonthtod) > /dev/null; 177 then 178 year=`expr $year - 1` 179 fi;; 180 *) year=$3;; 181esac 182 183# The result. 184echo $day $month $year 185 186# Local Variables: 187# mode: shell-script 188# sh-indentation: 2 189# eval: (add-hook 'write-file-hooks 'time-stamp) 190# time-stamp-start: "scriptversion=" 191# time-stamp-format: "%:y-%02m-%02d.%02H" 192# time-stamp-end: "$" 193# End: 194