1 #!/bin/sh 2 # Get modification time of a file or directory and pretty-print it. 3 4 scriptversion=2009-04-28.21; # UTC 5 6 # Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007, 2009 Free 7 # Software 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, see <http://www.gnu.org/licenses/>. 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 (at] gnu.org> or send patches to 30 # <automake-patches (at] gnu.org>. 31 32 case $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 39 Usage: mdate-sh [--help] [--version] FILE 40 41 Pretty-print the modification time of FILE. 42 43 Report bugs to <bug-automake (at] gnu.org>. 44 EOF 45 exit $? 46 ;; 47 -v | --v*) 48 echo "mdate-sh $scriptversion" 49 exit $? 50 ;; 51 esac 52 53 # Prevent date giving response in another language. 54 LANG=C 55 export LANG 56 LC_ALL=C 57 export LC_ALL 58 LC_TIME=C 59 export LC_TIME 60 61 # GNU ls changes its time format in response to the TIME_STYLE 62 # variable. Since we cannot assume `unset' works, revert this 63 # variable to its documented default. 64 if test "${TIME_STYLE+set}" = set; then 65 TIME_STYLE=posix-long-iso 66 export TIME_STYLE 67 fi 68 69 save_arg1=$1 70 71 # Find out how to get the extended ls output of a file or directory. 72 if ls -L /dev/null 1>/dev/null 2>&1; then 73 ls_command='ls -L -l -d' 74 else 75 ls_command='ls -l -d' 76 fi 77 # Avoid user/group names that might have spaces, when possible. 78 if ls -n /dev/null 1>/dev/null 2>&1; then 79 ls_command="$ls_command -n" 80 fi 81 82 # A `ls -l' line looks as follows on OS/2. 83 # drwxrwx--- 0 Aug 11 2001 foo 84 # This differs from Unix, which adds ownership information. 85 # drwxrwx--- 2 root root 4096 Aug 11 2001 foo 86 # 87 # To find the date, we split the line on spaces and iterate on words 88 # until we find a month. This cannot work with files whose owner is a 89 # user named `Jan', or `Feb', etc. However, it's unlikely that `/' 90 # will be owned by a user whose name is a month. So we first look at 91 # the extended ls output of the root directory to decide how many 92 # words should be skipped to get the date. 93 94 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. 95 set x`$ls_command /` 96 97 # Find which argument is the month. 98 month= 99 command= 100 until test $month 101 do 102 shift 103 # Add another shift to the command. 104 command="$command shift;" 105 case $1 in 106 Jan) month=January; nummonth=1;; 107 Feb) month=February; nummonth=2;; 108 Mar) month=March; nummonth=3;; 109 Apr) month=April; nummonth=4;; 110 May) month=May; nummonth=5;; 111 Jun) month=June; nummonth=6;; 112 Jul) month=July; nummonth=7;; 113 Aug) month=August; nummonth=8;; 114 Sep) month=September; nummonth=9;; 115 Oct) month=October; nummonth=10;; 116 Nov) month=November; nummonth=11;; 117 Dec) month=December; nummonth=12;; 118 esac 119 done 120 121 # Get the extended ls output of the file or directory. 122 set dummy x`eval "$ls_command \"\$save_arg1\""` 123 124 # Remove all preceding arguments 125 eval $command 126 127 # Because of the dummy argument above, month is in $2. 128 # 129 # On a POSIX system, we should have 130 # 131 # $# = 5 132 # $1 = file size 133 # $2 = month 134 # $3 = day 135 # $4 = year or time 136 # $5 = filename 137 # 138 # On Darwin 7.7.0 and 7.6.0, we have 139 # 140 # $# = 4 141 # $1 = day 142 # $2 = month 143 # $3 = year or time 144 # $4 = filename 145 146 # Get the month. 147 case $2 in 148 Jan) month=January; nummonth=1;; 149 Feb) month=February; nummonth=2;; 150 Mar) month=March; nummonth=3;; 151 Apr) month=April; nummonth=4;; 152 May) month=May; nummonth=5;; 153 Jun) month=June; nummonth=6;; 154 Jul) month=July; nummonth=7;; 155 Aug) month=August; nummonth=8;; 156 Sep) month=September; nummonth=9;; 157 Oct) month=October; nummonth=10;; 158 Nov) month=November; nummonth=11;; 159 Dec) month=December; nummonth=12;; 160 esac 161 162 case $3 in 163 ???*) day=$1;; 164 *) day=$3; shift;; 165 esac 166 167 # Here we have to deal with the problem that the ls output gives either 168 # the time of day or the year. 169 case $3 in 170 *:*) set `date`; eval year=\$$# 171 case $2 in 172 Jan) nummonthtod=1;; 173 Feb) nummonthtod=2;; 174 Mar) nummonthtod=3;; 175 Apr) nummonthtod=4;; 176 May) nummonthtod=5;; 177 Jun) nummonthtod=6;; 178 Jul) nummonthtod=7;; 179 Aug) nummonthtod=8;; 180 Sep) nummonthtod=9;; 181 Oct) nummonthtod=10;; 182 Nov) nummonthtod=11;; 183 Dec) nummonthtod=12;; 184 esac 185 # For the first six month of the year the time notation can also 186 # be used for files modified in the last year. 187 if (expr $nummonth \> $nummonthtod) > /dev/null; 188 then 189 year=`expr $year - 1` 190 fi;; 191 *) year=$3;; 192 esac 193 194 # The result. 195 echo $day $month $year 196 197 # Local Variables: 198 # mode: shell-script 199 # sh-indentation: 2 200 # eval: (add-hook 'write-file-hooks 'time-stamp) 201 # time-stamp-start: "scriptversion=" 202 # time-stamp-format: "%:y-%02m-%02d.%02H" 203 # time-stamp-time-zone: "UTC" 204 # time-stamp-end: "; # UTC" 205 # End: 206
