diff options
Diffstat (limited to 'scripts/mdate-sh')
| -rwxr-xr-x | scripts/mdate-sh | 113 |
1 files changed, 102 insertions, 11 deletions
diff --git a/scripts/mdate-sh b/scripts/mdate-sh index b610b47a6..b3719cf76 100755 --- a/scripts/mdate-sh +++ b/scripts/mdate-sh @@ -1,6 +1,9 @@ #!/bin/sh # Get modification time of a file or directory and pretty-print it. -# Copyright (C) 1995, 1996, 1997, 2003 Free Software Foundation, Inc. + +scriptversion=2010-08-21.06; # UTC + +# Copyright (C) 1995-2013 Free Software Foundation, Inc. # written by Ulrich Drepper <[email protected]>, June 1995 # # This program is free software; you can redistribute it and/or modify @@ -14,14 +17,55 @@ # 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# along with this program. If not, see <http://www.gnu.org/licenses/>. # 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 <[email protected]> or send patches to +# <[email protected]>. + +if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then + emulate sh + NULLCMD=: + # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which + # is contrary to our usage. Disable this feature. + alias -g '${1+"$@"}'='"$@"' + setopt NO_GLOB_SUBST +fi + +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 day of FILE, in the format: +1 January 1970 + +Report bugs to <[email protected]>. +EOF + exit $? + ;; + -v | --v*) + echo "mdate-sh $scriptversion" + exit $? + ;; +esac + +error () +{ + echo "$0: $1" >&2 + exit 1 +} + + # Prevent date giving response in another language. LANG=C export LANG @@ -30,7 +74,15 @@ export LC_ALL LC_TIME=C export LC_TIME -save_arg1="$1" +# GNU ls changes its time format in response to the TIME_STYLE +# variable. Since we cannot assume 'unset' works, revert this +# variable to its documented default. +if test "${TIME_STYLE+set}" = set; then + TIME_STYLE=posix-long-iso + export TIME_STYLE +fi + +save_arg1=$1 # Find out how to get the extended ls output of a file or directory. if ls -L /dev/null 1>/dev/null 2>&1; then @@ -38,27 +90,32 @@ if ls -L /dev/null 1>/dev/null 2>&1; then else ls_command='ls -l -d' fi +# Avoid user/group names that might have spaces, when possible. +if ls -n /dev/null 1>/dev/null 2>&1; then + ls_command="$ls_command -n" +fi -# A `ls -l' line looks as follows on OS/2. +# 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 `/' +# 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`$ls_command /` +set x`$ls_command /` # Find which argument is the month. month= command= until test $month do + test $# -gt 0 || error "failed parsing '$ls_command /' output" shift # Add another shift to the command. command="$command shift;" @@ -78,14 +135,35 @@ do esac done +test -n "$month" || error "failed parsing '$ls_command /' output" + # Get the extended ls output of the file or directory. -set - x`eval "$ls_command \"\$save_arg1\""` +set dummy x`eval "$ls_command \"\\\$save_arg1\""` # Remove all preceding arguments eval $command -# Get the month. Next argument is day, followed by the year or time. -case $1 in +# 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;; @@ -100,7 +178,10 @@ case $1 in Dec) month=December; nummonth=12;; esac -day=$2 +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. @@ -131,3 +212,13 @@ 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-time-zone: "UTC" +# time-stamp-end: "; # UTC" +# End: |