source: rtems/mdate-sh @ 48e02af

4.11
Last change on this file since 48e02af was 055e668, checked in by Ralf Corsepius <ralf.corsepius@…>, on Dec 13, 2011 at 4:59:22 AM

2011-12-13 Ralf Corsépius <ralf.corsepius@…>

  • compile, depcomp, mdate-sh, texinfo.tex: Update from automake-1.11.1b.
  • Property mode set to 100755
File size: 6.0 KB
Line 
1#!/bin/sh
2# Get modification time of a file or directory and pretty-print it.
3
4scriptversion=2010-08-21.06; # UTC
5
6# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007, 2009, 2010
7# Free Software 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 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@gnu.org> or send patches to
30# <automake-patches@gnu.org>.
31
32if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
33  emulate sh
34  NULLCMD=:
35  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which
36  # is contrary to our usage.  Disable this feature.
37  alias -g '${1+"$@"}'='"$@"'
38  setopt NO_GLOB_SUBST
39fi
40
41case $1 in
42  '')
43     echo "$0: No file.  Try \`$0 --help' for more information." 1>&2
44     exit 1;
45     ;;
46  -h | --h*)
47    cat <<\EOF
48Usage: mdate-sh [--help] [--version] FILE
49
50Pretty-print the modification day of FILE, in the format:
511 January 1970
52
53Report bugs to <bug-automake@gnu.org>.
54EOF
55    exit $?
56    ;;
57  -v | --v*)
58    echo "mdate-sh $scriptversion"
59    exit $?
60    ;;
61esac
62
63error ()
64{
65  echo "$0: $1" >&2
66  exit 1
67}
68
69
70# Prevent date giving response in another language.
71LANG=C
72export LANG
73LC_ALL=C
74export LC_ALL
75LC_TIME=C
76export LC_TIME
77
78# GNU ls changes its time format in response to the TIME_STYLE
79# variable.  Since we cannot assume `unset' works, revert this
80# variable to its documented default.
81if test "${TIME_STYLE+set}" = set; then
82  TIME_STYLE=posix-long-iso
83  export TIME_STYLE
84fi
85
86save_arg1=$1
87
88# Find out how to get the extended ls output of a file or directory.
89if ls -L /dev/null 1>/dev/null 2>&1; then
90  ls_command='ls -L -l -d'
91else
92  ls_command='ls -l -d'
93fi
94# Avoid user/group names that might have spaces, when possible.
95if ls -n /dev/null 1>/dev/null 2>&1; then
96  ls_command="$ls_command -n"
97fi
98
99# A `ls -l' line looks as follows on OS/2.
100#  drwxrwx---        0 Aug 11  2001 foo
101# This differs from Unix, which adds ownership information.
102#  drwxrwx---   2 root  root      4096 Aug 11  2001 foo
103#
104# To find the date, we split the line on spaces and iterate on words
105# until we find a month.  This cannot work with files whose owner is a
106# user named `Jan', or `Feb', etc.  However, it's unlikely that `/'
107# will be owned by a user whose name is a month.  So we first look at
108# the extended ls output of the root directory to decide how many
109# words should be skipped to get the date.
110
111# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below.
112set x`$ls_command /`
113
114# Find which argument is the month.
115month=
116command=
117until test $month
118do
119  test $# -gt 0 || error "failed parsing \`$ls_command /' output"
120  shift
121  # Add another shift to the command.
122  command="$command shift;"
123  case $1 in
124    Jan) month=January; nummonth=1;;
125    Feb) month=February; nummonth=2;;
126    Mar) month=March; nummonth=3;;
127    Apr) month=April; nummonth=4;;
128    May) month=May; nummonth=5;;
129    Jun) month=June; nummonth=6;;
130    Jul) month=July; nummonth=7;;
131    Aug) month=August; nummonth=8;;
132    Sep) month=September; nummonth=9;;
133    Oct) month=October; nummonth=10;;
134    Nov) month=November; nummonth=11;;
135    Dec) month=December; nummonth=12;;
136  esac
137done
138
139test -n "$month" || error "failed parsing \`$ls_command /' output"
140
141# Get the extended ls output of the file or directory.
142set dummy x`eval "$ls_command \"\\\$save_arg1\""`
143
144# Remove all preceding arguments
145eval $command
146
147# Because of the dummy argument above, month is in $2.
148#
149# On a POSIX system, we should have
150#
151# $# = 5
152# $1 = file size
153# $2 = month
154# $3 = day
155# $4 = year or time
156# $5 = filename
157#
158# On Darwin 7.7.0 and 7.6.0, we have
159#
160# $# = 4
161# $1 = day
162# $2 = month
163# $3 = year or time
164# $4 = filename
165
166# Get the month.
167case $2 in
168  Jan) month=January; nummonth=1;;
169  Feb) month=February; nummonth=2;;
170  Mar) month=March; nummonth=3;;
171  Apr) month=April; nummonth=4;;
172  May) month=May; nummonth=5;;
173  Jun) month=June; nummonth=6;;
174  Jul) month=July; nummonth=7;;
175  Aug) month=August; nummonth=8;;
176  Sep) month=September; nummonth=9;;
177  Oct) month=October; nummonth=10;;
178  Nov) month=November; nummonth=11;;
179  Dec) month=December; nummonth=12;;
180esac
181
182case $3 in
183  ???*) day=$1;;
184  *) day=$3; shift;;
185esac
186
187# Here we have to deal with the problem that the ls output gives either
188# the time of day or the year.
189case $3 in
190  *:*) set `date`; eval year=\$$#
191       case $2 in
192         Jan) nummonthtod=1;;
193         Feb) nummonthtod=2;;
194         Mar) nummonthtod=3;;
195         Apr) nummonthtod=4;;
196         May) nummonthtod=5;;
197         Jun) nummonthtod=6;;
198         Jul) nummonthtod=7;;
199         Aug) nummonthtod=8;;
200         Sep) nummonthtod=9;;
201         Oct) nummonthtod=10;;
202         Nov) nummonthtod=11;;
203         Dec) nummonthtod=12;;
204       esac
205       # For the first six month of the year the time notation can also
206       # be used for files modified in the last year.
207       if (expr $nummonth \> $nummonthtod) > /dev/null;
208       then
209         year=`expr $year - 1`
210       fi;;
211  *) year=$3;;
212esac
213
214# The result.
215echo $day $month $year
216
217# Local Variables:
218# mode: shell-script
219# sh-indentation: 2
220# eval: (add-hook 'write-file-hooks 'time-stamp)
221# time-stamp-start: "scriptversion="
222# time-stamp-format: "%:y-%02m-%02d.%02H"
223# time-stamp-time-zone: "UTC"
224# time-stamp-end: "; # UTC"
225# End:
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