OLD | NEW |
(Empty) | |
| 1 #!/bin/sh |
| 2 # Get modification time of a file or directory and pretty-print it. |
| 3 |
| 4 scriptversion=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 3, 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@gnu.org> or send patches to |
| 30 # <automake-patches@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@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 $year |
| 196 |
| 197 # Local Variables: |
| 198 # mode: shell-script |
| 199 # sh-indentation: 2 |
| 200 # eval: (add-hook 'write-file-hooks 'time-stamp) |
| 201 # time-stamp-start: "scriptversion=" |
| 202 # time-stamp-format: "%:y-%02m-%02d.%02H" |
| 203 # time-stamp-end: "$" |
| 204 # End: |
OLD | NEW |