File: mdate-sh [ffi-1.9.0 Documentation]

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#!/bin/sh # Get modification time of a file or directory and pretty-print it.

scriptversion=2005-06-29.22

# Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005 Free Software # Foundation, Inc. # written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, June 1995 # # This program is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2, or (at your option) # any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software Foundation, # Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

# As a special exception to the GNU General Public License, if you # distribute this file as part of a program that contains a # configuration script generated by Autoconf, you may include it under # the same distribution terms that you use for the rest of that program.

# This file is maintained in Automake, please report # bugs to <bug-automake@gnu.org> or send patches to # <automake-patches@gnu.org>.

case $1 in

    '')
       echo "$0: No file.  Try \`$0 --help' for more information." 1>&2
       exit 1;
       ;;
    -h | --h*)
      cat <<\EOF

Usage: mdate-sh [--help] [--version] FILE

Pretty-print the modification time of FILE.

Report bugs to <bug-automake@gnu.org>. EOF

      exit $?
      ;;
    -v | --v*)
      echo "mdate-sh $scriptversion"
      exit $?
      ;;

esac

# Prevent date giving response in another language. LANG=C export LANG LC_ALL=C export LC_ALL LC_TIME=C export LC_TIME

# GNU ls changes its time format in response to the TIME_STYLE # variable. Since we cannot assume `unset' works, revert this # variable to its documented default. if test "${TIME_STYLE+set}" = set; then

    TIME_STYLE=posix-long-iso
    export TIME_STYLE

fi

save_arg1=$1

# Find out how to get the extended ls output of a file or directory. if ls -L /dev/null 1>/dev/null 2>&1; then

    ls_command='ls -L -l -d'

else

    ls_command='ls -l -d'

fi

# A `ls -l' line looks as follows on OS/2. # drwxrwx--- 0 Aug 11 2001 foo # This differs from Unix, which adds ownership information. # drwxrwx--- 2 root root 4096 Aug 11 2001 foo # # To find the date, we split the line on spaces and iterate on words # until we find a month. This cannot work with files whose owner is a # user named `Jan', or `Feb', etc. However, it's unlikely that `/' # will be owned by a user whose name is a month. So we first look at # the extended ls output of the root directory to decide how many # words should be skipped to get the date.

# On HPUX /bin/sh, "set" interprets "-rw-r--r--" as options, so the "x" below. set x`ls -l -d /`

# Find which argument is the month. month= command= until test $month do

    shift
    # Add another shift to the command.
    command="$command shift;"
    case $1 in
      Jan) month=January; nummonth=1;;
      Feb) month=February; nummonth=2;;
      Mar) month=March; nummonth=3;;
      Apr) month=April; nummonth=4;;
      May) month=May; nummonth=5;;
      Jun) month=June; nummonth=6;;
      Jul) month=July; nummonth=7;;
      Aug) month=August; nummonth=8;;
      Sep) month=September; nummonth=9;;
      Oct) month=October; nummonth=10;;
      Nov) month=November; nummonth=11;;
      Dec) month=December; nummonth=12;;
    esac

done

# Get the extended ls output of the file or directory. set dummy x`eval "$ls_command "$save_arg1""`

# Remove all preceding arguments eval $command

# Because of the dummy argument above, month is in $2. # # On a POSIX system, we should have # # $# = 5 # $1 = file size # $2 = month # $3 = day # $4 = year or time # $5 = filename # # On Darwin 7.7.0 and 7.6.0, we have # # $# = 4 # $1 = day # $2 = month # $3 = year or time # $4 = filename

# Get the month. case $2 in

    Jan) month=January; nummonth=1;;
    Feb) month=February; nummonth=2;;
    Mar) month=March; nummonth=3;;
    Apr) month=April; nummonth=4;;
    May) month=May; nummonth=5;;
    Jun) month=June; nummonth=6;;
    Jul) month=July; nummonth=7;;
    Aug) month=August; nummonth=8;;
    Sep) month=September; nummonth=9;;
    Oct) month=October; nummonth=10;;
    Nov) month=November; nummonth=11;;
    Dec) month=December; nummonth=12;;

esac

case $3 in

    ???*) day=$1;;
    *) day=$3; shift;;

esac

# Here we have to deal with the problem that the ls output gives either # the time of day or the year. case $3 in

    *:*) set `date`; eval year=\$$#
         case $2 in
           Jan) nummonthtod=1;;
           Feb) nummonthtod=2;;
           Mar) nummonthtod=3;;
           Apr) nummonthtod=4;;
           May) nummonthtod=5;;
           Jun) nummonthtod=6;;
           Jul) nummonthtod=7;;
           Aug) nummonthtod=8;;
           Sep) nummonthtod=9;;
           Oct) nummonthtod=10;;
           Nov) nummonthtod=11;;
           Dec) nummonthtod=12;;
         esac
         # For the first six month of the year the time notation can also
         # be used for files modified in the last year.
         if (expr $nummonth \> $nummonthtod) > /dev/null;
         then
           year=`expr $year - 1`
         fi;;
    *) year=$3;;

esac

# The result. echo $day $month $year

# Local Variables: # mode: shell-script # sh-indentation: 2 # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-end: "$" # End:

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