Mercurial > octave
annotate build-aux/get-source-mtime.sh @ 25800:7b2312def76b
build: ensure hg commands are not affected by user settings
* get-source-mtime.sh, mk-hg-id.sh (hg_safe): New shell function to call hg
commands safely.
author | Mike Miller <mtmiller@octave.org> |
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date | Wed, 15 Aug 2018 13:03:29 -0700 |
parents | 6652d3823428 |
children | 00f796120a6d |
rev | line source |
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1 #! /bin/sh |
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2 # |
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3 # Copyright (C) 2017-2018 Mike Miller |
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4 # |
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5 # This file is part of Octave. |
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6 # |
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7 # Octave is free software: you can redistribute it and/or modify it |
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8 # under the terms of the GNU General Public License as published by |
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9 # the Free Software Foundation, either version 3 of the License, or |
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10 # (at your option) any later version. |
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11 # |
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12 # Octave is distributed in the hope that it will be useful, but |
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13 # WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 # GNU General Public License for more details. |
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16 # |
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17 # You should have received a copy of the GNU General Public License |
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18 # along with Octave; see the file COPYING. If not, see |
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19 # <https://www.gnu.org/licenses/>. |
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20 |
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21 # Generate a timestamp that best represents the last modification time |
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22 # of this source tree. The time value is printed on stdout in units of |
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23 # time_t. If a reasonable representation of the source tree last |
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24 # modification time can't be determined, then the current system time is |
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25 # printed instead. A valid time_t value is always printed on stdout. |
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26 |
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27 set -e |
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28 |
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29 PERL=${PERL:-perl} |
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30 SED=${SED:-sed} |
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31 |
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32 if [ $# -ne 1 ]; then |
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33 echo "usage: get-source-mtime.sh SRCDIR" 1>&2 |
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34 exit 1 |
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35 fi |
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36 |
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37 srcdir="$1" |
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38 |
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39 ## A user's ~/.hgrc may redefine or add default options to any hg subcommand, |
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40 ## potentially altering its behavior and possibly its standard output. Always |
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41 ## run hg subcommands with configuration variables set to ensure that the |
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42 ## user's preferences do not influence the expected behavior. |
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43 hg_safe () |
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44 { |
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45 cmd=$1; shift |
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46 hg --config alias.${cmd}=${cmd} --config defaults.${cmd}= ${cmd} "$@" |
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47 } |
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48 |
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49 if [ x"$SOURCE_DATE_EPOCH" != x ]; then |
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50 # Allow the source modification time to be overridden by SOURCE_DATE_EPOCH |
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51 t=$SOURCE_DATE_EPOCH |
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52 elif [ -d $srcdir/.hg ]; then |
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53 t=$( cd $srcdir && hg_safe log --rev . --template '{date|hgdate}' ) |
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54 t=$( echo $t | $SED -n 's/^\([0-9]\+\) .*/\1/p' ) |
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55 elif [ -f $srcdir/HG-ID ]; then |
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56 t=$( $PERL -e '@s = stat($ARGV[0]); print($s[9]) if @s;' $srcdir/HG-ID ) |
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57 elif [ -f $srcdir/configure ]; then |
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58 t=$( $PERL -e '@s = stat($ARGV[0]); print($s[9]) if @s;' $srcdir/configure ) |
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59 fi |
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60 |
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61 if [ x"$t" = x ]; then |
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62 t=$( date +%s ) |
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63 fi |
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64 |
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65 echo $t |