2 # Get modification time of a file or directory and pretty-print it.
4 scriptversion=2007-03-30.02
6 # Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007 Free Software
8 # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995
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)
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.
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.
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.
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>.
35 echo "$0: No file. Try \`$0 --help' for more information." 1>&2
40 Usage: mdate-sh [--help] [--version] FILE
42 Pretty-print the modification time of FILE.
44 Report bugs to <bug-automake@gnu.org>.
49 echo "mdate-sh $scriptversion"
54 # Prevent date giving response in another language.
62 # GNU ls changes its time format in response to the TIME_STYLE
63 # variable. Since we cannot assume `unset' works, revert this
64 # variable to its documented default.
65 if test "${TIME_STYLE+set}" = set; then
66 TIME_STYLE=posix-long-iso
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'
78 # Avoid user/group names that might have spaces, when possible.
79 if ls -n /dev/null 1>/dev/null 2>&1; then
80 ls_command="$ls_command -n"
83 # A `ls -l' line looks as follows on OS/2.
84 # drwxrwx--- 0 Aug 11 2001 foo
85 # This differs from Unix, which adds ownership information.
86 # drwxrwx--- 2 root root 4096 Aug 11 2001 foo
88 # To find the date, we split the line on spaces and iterate on words
89 # until we find a month. This cannot work with files whose owner is a
90 # user named `Jan', or `Feb', etc. However, it's unlikely that `/'
91 # will be owned by a user whose name is a month. So we first look at
92 # the extended ls output of the root directory to decide how many
93 # words should be skipped to get the date.
95 # On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
98 # Find which argument is the month.
104 # Add another shift to the command.
105 command="$command shift;"
107 Jan) month=January; nummonth=1;;
108 Feb) month=February; nummonth=2;;
109 Mar) month=March; nummonth=3;;
110 Apr) month=April; nummonth=4;;
111 May) month=May; nummonth=5;;
112 Jun) month=June; nummonth=6;;
113 Jul) month=July; nummonth=7;;
114 Aug) month=August; nummonth=8;;
115 Sep) month=September; nummonth=9;;
116 Oct) month=October; nummonth=10;;
117 Nov) month=November; nummonth=11;;
118 Dec) month=December; nummonth=12;;
122 # Get the extended ls output of the file or directory.
123 set dummy x`eval "$ls_command \"\$save_arg1\""`
125 # Remove all preceding arguments
128 # Because of the dummy argument above, month is in $2.
130 # On a POSIX system, we should have
139 # On Darwin 7.7.0 and 7.6.0, we have
149 Jan) month=January; nummonth=1;;
150 Feb) month=February; nummonth=2;;
151 Mar) month=March; nummonth=3;;
152 Apr) month=April; nummonth=4;;
153 May) month=May; nummonth=5;;
154 Jun) month=June; nummonth=6;;
155 Jul) month=July; nummonth=7;;
156 Aug) month=August; nummonth=8;;
157 Sep) month=September; nummonth=9;;
158 Oct) month=October; nummonth=10;;
159 Nov) month=November; nummonth=11;;
160 Dec) month=December; nummonth=12;;
168 # Here we have to deal with the problem that the ls output gives either
169 # the time of day or the year.
171 *:*) set `date`; eval year=\$$#
182 Oct) nummonthtod=10;;
183 Nov) nummonthtod=11;;
184 Dec) nummonthtod=12;;
186 # For the first six month of the year the time notation can also
187 # be used for files modified in the last year.
188 if (expr $nummonth \> $nummonthtod) > /dev/null;
190 year=`expr $year - 1`
196 echo $day $month $year
201 # eval: (add-hook 'write-file-hooks 'time-stamp)
202 # time-stamp-start: "scriptversion="
203 # time-stamp-format: "%:y-%02m-%02d.%02H"
204 # time-stamp-end: "$"