1 #!/bin/sh 2 # Get modification time of a file or directory and pretty-print it. 3 4 scriptversion=2005-06-29.22 5 6 # Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005 Free Software 7 # Foundation, Inc. 8 # written by Ulrich Drepper <drepper (at] 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 (at] gnu.org> or send patches to 31 # <automake-patches (at] gnu.org>. 32 33 case $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 40 Usage: mdate-sh [--help] [--version] FILE 41 42 Pretty-print the modification time of FILE. 43 44 Report bugs to <bug-automake (at] gnu.org>. 45 EOF 46 exit $? 47 ;; 48 -v | --v*) 49 echo "mdate-sh $scriptversion" 50 exit $? 51 ;; 52 esac 53 54 # Prevent date giving response in another language. 55 LANG=C 56 export LANG 57 LC_ALL=C 58 export LC_ALL 59 LC_TIME=C 60 export LC_TIME 61 62 # GNU ls changes its time format in response to the TIME_STYLE 63 # variable. Since we cannot assume `unset' works, revert this 64 # variable to its documented default. 65 if test "${TIME_STYLE+set}" = set; then 66 TIME_STYLE=posix-long-iso 67 export TIME_STYLE 68 fi 69 70 save_arg1=$1 71 72 # Find out how to get the extended ls output of a file or directory. 73 if ls -L /dev/null 1>/dev/null 2>&1; then 74 ls_command='ls -L -l -d' 75 else 76 ls_command='ls -l -d' 77 fi 78 79 # A `ls -l' line looks as follows on OS/2. 80 # drwxrwx--- 0 Aug 11 2001 foo 81 # This differs from Unix, which adds ownership information. 82 # drwxrwx--- 2 root root 4096 Aug 11 2001 foo 83 # 84 # To find the date, we split the line on spaces and iterate on words 85 # until we find a month. This cannot work with files whose owner is a 86 # user named `Jan', or `Feb', etc. However, it's unlikely that `/' 87 # will be owned by a user whose name is a month. So we first look at 88 # the extended ls output of the root directory to decide how many 89 # words should be skipped to get the date. 90 91 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. 92 set x`ls -l -d /` 93 94 # Find which argument is the month. 95 month= 96 command= 97 until test $month 98 do 99 shift 100 # Add another shift to the command. 101 command="$command shift;" 102 case $1 in 103 Jan) month=January; nummonth=1;; 104 Feb) month=February; nummonth=2;; 105 Mar) month=March; nummonth=3;; 106 Apr) month=April; nummonth=4;; 107 May) month=May; nummonth=5;; 108 Jun) month=June; nummonth=6;; 109 Jul) month=July; nummonth=7;; 110 Aug) month=August; nummonth=8;; 111 Sep) month=September; nummonth=9;; 112 Oct) month=October; nummonth=10;; 113 Nov) month=November; nummonth=11;; 114 Dec) month=December; nummonth=12;; 115 esac 116 done 117 118 # Get the extended ls output of the file or directory. 119 set dummy x`eval "$ls_command \"\$save_arg1\""` 120 121 # Remove all preceding arguments 122 eval $command 123 124 # Because of the dummy argument above, month is in $2. 125 # 126 # On a POSIX system, we should have 127 # 128 # $# = 5 129 # $1 = file size 130 # $2 = month 131 # $3 = day 132 # $4 = year or time 133 # $5 = filename 134 # 135 # On Darwin 7.7.0 and 7.6.0, we have 136 # 137 # $# = 4 138 # $1 = day 139 # $2 = month 140 # $3 = year or time 141 # $4 = filename 142 143 # Get the month. 144 case $2 in 145 Jan) month=January; nummonth=1;; 146 Feb) month=February; nummonth=2;; 147 Mar) month=March; nummonth=3;; 148 Apr) month=April; nummonth=4;; 149 May) month=May; nummonth=5;; 150 Jun) month=June; nummonth=6;; 151 Jul) month=July; nummonth=7;; 152 Aug) month=August; nummonth=8;; 153 Sep) month=September; nummonth=9;; 154 Oct) month=October; nummonth=10;; 155 Nov) month=November; nummonth=11;; 156 Dec) month=December; nummonth=12;; 157 esac 158 159 case $3 in 160 ???*) day=$1;; 161 *) day=$3; shift;; 162 esac 163 164 # Here we have to deal with the problem that the ls output gives either 165 # the time of day or the year. 166 case $3 in 167 *:*) set `date`; eval year=\$$# 168 case $2 in 169 Jan) nummonthtod=1;; 170 Feb) nummonthtod=2;; 171 Mar) nummonthtod=3;; 172 Apr) nummonthtod=4;; 173 May) nummonthtod=5;; 174 Jun) nummonthtod=6;; 175 Jul) nummonthtod=7;; 176 Aug) nummonthtod=8;; 177 Sep) nummonthtod=9;; 178 Oct) nummonthtod=10;; 179 Nov) nummonthtod=11;; 180 Dec) nummonthtod=12;; 181 esac 182 # For the first six month of the year the time notation can also 183 # be used for files modified in the last year. 184 if (expr $nummonth \> $nummonthtod) > /dev/null; 185 then 186 year=`expr $year - 1` 187 fi;; 188 *) year=$3;; 189 esac 190 191 # The result. 192 echo $day $month $year 193 194 # Local Variables: 195 # mode: shell-script 196 # sh-indentation: 2 197 # eval: (add-hook 'write-file-hooks 'time-stamp) 198 # time-stamp-start: "scriptversion=" 199 # time-stamp-format: "%:y-%02m-%02d.%02H" 200 # time-stamp-end: "$" 201 # End: 202
