Annotation of embedaddon/quagga/doc/mdate-sh, revision 1.1
1.1 ! misho 1: #!/bin/sh
! 2: # Get modification time of a file or directory and pretty-print it.
! 3:
! 4: scriptversion=2009-04-28.21; # UTC
! 5:
! 6: # Copyright (C) 1995, 1996, 1997, 2003, 2004, 2005, 2007, 2009 Free
! 7: # 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:
! 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-time-zone: "UTC"
! 204: # time-stamp-end: "; # UTC"
! 205: # End:
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