2 # Get modification time of a file or directory and pretty-print it.
4 scriptversion=2003-11-09.00
6 # Copyright (C) 1995, 1996, 1997, 2003 Free Software Foundation, Inc.
7 # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
9 # This program is free software; you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation; either version 2, or (at your option)
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program; if not, write to the Free Software Foundation,
21 # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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.
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>.
34 echo "$0: No file. Try \`$0 --help' for more information." 1>&2
39 Usage: mdate-sh [--help] [--version] FILE
41 Pretty-print the modification time of FILE.
43 Report bugs to <bug-automake@gnu.org>.
48 echo "mdate-sh $scriptversion"
53 # Prevent date giving response in another language.
61 # GNU ls changes its time format in response to the TIME_STYLE variable, but
62 # we cannot unset it since the V7 shell did not have an "unset" command.
63 # The documentation says that the default is "posix-long-iso".
65 test "${TIME_STYLE+set}" = set && TIME_STYLE=posix-long-iso
69 # Find out how to get the extended ls output of a file or directory.
70 if ls -L /dev/null 1>/dev/null 2>&1; then
71 ls_command='ls -L -l -d'
76 # A `ls -l' line looks as follows on OS/2.
77 # drwxrwx--- 0 Aug 11 2001 foo
78 # This differs from Unix, which adds ownership information.
79 # drwxrwx--- 2 root root 4096 Aug 11 2001 foo
81 # To find the date, we split the line on spaces and iterate on words
82 # until we find a month. This cannot work with files whose owner is a
83 # user named `Jan', or `Feb', etc. However, it's unlikely that `/'
84 # will be owned by a user whose name is a month. So we first look at
85 # the extended ls output of the root directory to decide how many
86 # words should be skipped to get the date.
88 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
89 set - x`$ls_command /`
91 # Find which argument is the month.
97 # Add another shift to the command.
98 command="$command shift;"
100 Jan) month=January; nummonth=1;;
101 Feb) month=February; nummonth=2;;
102 Mar) month=March; nummonth=3;;
103 Apr) month=April; nummonth=4;;
104 May) month=May; nummonth=5;;
105 Jun) month=June; nummonth=6;;
106 Jul) month=July; nummonth=7;;
107 Aug) month=August; nummonth=8;;
108 Sep) month=September; nummonth=9;;
109 Oct) month=October; nummonth=10;;
110 Nov) month=November; nummonth=11;;
111 Dec) month=December; nummonth=12;;
115 # Get the extended ls output of the file or directory.
116 set - x`eval "$ls_command \"\$save_arg1\""`
118 # Remove all preceding arguments
121 # Get the month. Next argument is day, followed by the year or time.
123 Jan) month=January; nummonth=1;;
124 Feb) month=February; nummonth=2;;
125 Mar) month=March; nummonth=3;;
126 Apr) month=April; nummonth=4;;
127 May) month=May; nummonth=5;;
128 Jun) month=June; nummonth=6;;
129 Jul) month=July; nummonth=7;;
130 Aug) month=August; nummonth=8;;
131 Sep) month=September; nummonth=9;;
132 Oct) month=October; nummonth=10;;
133 Nov) month=November; nummonth=11;;
134 Dec) month=December; nummonth=12;;
139 # Here we have to deal with the problem that the ls output gives either
140 # the time of day or the year.
142 *:*) set `date`; eval year=\$$#
153 Oct) nummonthtod=10;;
154 Nov) nummonthtod=11;;
155 Dec) nummonthtod=12;;
157 # For the first six month of the year the time notation can also
158 # be used for files modified in the last year.
159 if (expr $nummonth \> $nummonthtod) > /dev/null;
161 year=`expr $year - 1`
167 echo $day $month $year
172 # eval: (add-hook 'write-file-hooks 'time-stamp)
173 # time-stamp-start: "scriptversion="
174 # time-stamp-format: "%:y-%02m-%02d.%02H"
175 # time-stamp-end: "$"