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#!/bin/bash
# Copyright (c) 2015 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# This aptly-named script verifies and fixes time ordering
# problems with Makefile.{am,in} aclocal.m4 configure* files.
set -eu
#set -vx
touch=""
commit=""
comma_v=""
aclocal=""
optimize=""
# The old autowank scheme used "touch <foo> ; sleep 1"
# to ensure differentiable, ordered timestamps. Worked, but
# took N seconds given N files to fix. We have an example
# which wastes multiple minutes given the old scheme.
#
# This version generates a sequence of timestamps
# starting an hour ago. That gives us
# lots to play with, in case some obnoxious program feels the need
# to complain about timestamps in the future.
# If we're in UTC+N land, generate UTC+(N+1)
# If we're in UTC-N land, generate UTC-(N-1)
my_tz=`date +%z`
sign=`echo $my_tz | sed -n -e 's/^\(.\{1\}\).*$/\1/p'`
t=`echo $my_tz | sed -n -e 's/^\(.\{1\}\)//p'`
tz_hour=`echo $t | sed -n -e 's/^\(.\{2\}\).*$/\1/p'`
tz_hour=`echo $tz_hour | sed 's/^0//'`
if [ $sign = "-" ] ; then
sign="+"
let tz_hour=$tz_hour+1
if [[ $tz_hour -ge "24" ]] ; then
tz_hour=0
fi
else
sign="-"
let tz_hour=$tz_hour-1 || true
if [[ $tz_hour -lt "0" ]] ; then
tz_hour=23
fi
fi
# Timestamp, an hour ago:
ts_begin=`TZ=UTC${sign}${tz_hour} date +%Y%m%d%H%M.%S`
# break into constituent parts
year=`echo $ts_begin | sed -n -e 's/^\(.\{4\}\).*$/\1/p'`
t=`echo $ts_begin | sed -n -e 's/^\(.\{4\}\)//p'`
month=`echo $t | sed -n -e 's/^\(.\{2\}\).*$/\1/p'`
t=`echo $t | sed -n -e 's/^\(.\{2\}\)//p'`
day=`echo $t | sed -n -e 's/^\(.\{2\}\).*$/\1/p'`
t=`echo $t | sed -n -e 's/^\(.\{2\}\)//p'`
hour=`echo $t | sed -n -e 's/^\(.\{2\}\).*$/\1/p'`
t=`echo $t | sed -n -e 's/^\(.\{2\}\)//p'`
min=`echo $t | sed -n -e 's/^\(.\{2\}\).*$/\1/p'`
t=`echo $t | sed -n -e 's/^\(.\{2\}\)//p'`
sec=`echo $t | sed -n -e 's/\.//p'`
# How many days in the current month?
# Good until someone changes the calendar rules
days_in_current_month() {
if [[ $month -eq 9 || $month -eq 4 \
|| $month -eq 6 || $month -eq 11 ]] ; then
return 30;
fi
if [[ $month -eq 2 ]] ; then
let t=($year/400)*400
if [[ $t -eq $year ]] ; then
return 29;
fi
let t=($year/100)*100
if [[ $t -eq $year ]] ; then
return 28;
fi
let t=($year/4)*4
if [[ $t -eq $year ]] ; then
return 29;
fi
return 28;
fi
return 31;
}
# The next timestamp to issue via touch
# A real hemorrhoid because bash isnt easily convinced
# that 08 is a decimal number
next_ts() {
sec=`echo $sec | sed 's/^0//'`
let sec=$sec+1
if [[ "$sec" -lt "60" ]] ; then
if [[ "$sec" -lt "10" ]] ; then
sec=0$sec
fi
return 0;
fi
sec="00"
min=`echo $min | sed 's/^0//'`
let min=$min+1
if [[ "$min" -lt "60" ]] ; then
if [[ "$min" -lt "10" ]] ; then
min=0$min
fi
return 0;
fi
min="00"
hour=`echo $hour | sed 's/^0//'`
let hour=$hour+1
if [[ "$hour" -lt "24" ]] ; then
if [[ "$hour" -lt "10" ]] ; then
hour=0$hour
fi
return 0;
fi
hour="00"
days_in_current_month
days_in_month=$?
if [[ "$day" -lt "$days_in_month" ]] ; then
day=`echo $day | sed 's/^0//'`
let day=$day+1
if [[ "$day" -lt "10" ]] ; then
day=0$day
fi
return 0;
fi
day="01"
month=`echo $month | sed 's/^0//'`
let month=$month+1
if [[ "$month" -lt "13" ]] ; then
if [[ "$month" -lt "10" ]] ; then
month=0$month
fi
return 0;
fi
month="01"
let year=$year+1
return 0;
}
while [ $# != 0 ] ; do
case "$1" in
(--commav) comma_v=",v" ;;
(--touch) touch=yes ;;
(--aclocal) aclocal=yes ;;
(--nooptimize) optimize="" ;;
(--commit=*) commit="$1" ;;
(*) echo "$0: usage [--touch|--commit|]" > /dev/stderr
exit 17 ;;
esac
shift
done
if [ "${aclocal}" != "" ] ; then
if [ -f aclocal.m4 ] ; then
echo touching aclocal.m4
sleep 1
touch aclocal.m4
else
echo aclocal.m4 not found
fi
fi
if [ "${comma_v}" != "" -a "${commit}" != "" ] ; then
echo "No, you may NOT molest ,v files directly. Go away." > /dev/stderr
exit 1
fi
function touchme ()
{
local victim="${1}"
shift
local touchmebaby=""
local sein="is"
local newer="no"
local older="no"
if [ ! -r "$victim" ] ; then
return
fi
while [ $# != 0 ] ; do
if [ "${1}" -nt "${victim}" ] ; then
newer="yes"
fi
if [ "${1}" -ot "${victim}" ] ; then
older="yes"
fi
if [ "${newer}" = "no" -a "${older}" = "no" ] ; then
newer="yes"
fi
if [ "${newer}" = "yes" ] ; then
if [ "${touchmebaby}" = "" ] ; then
touchmebaby="${1}"
else
sein="are"
touchmebaby="${touchmebaby} ${1}"
fi
fi
shift
done
if [ -n "${touchmebaby}" ] ; then
echo "*** ${touchmebaby} ${sein} newer than ${victim} "
if [ -n "${touch}" ] ; then
#
# This is the old version, in case something backfires...
if [ "${optimize}" != "yes" ] ; then
echo "Fixing " ;touch -c "$victim" ; sleep 1
else
echo "Fixing "
# echo touch -c -t $year$month$day$hour$min.$sec "$victim"
touch -c -t $year$month$day$hour$min.$sec "$victim"
next_ts
fi
fi
fi
}
makefileins="`/usr/bin/find . -name Attic -prune -o -name Makefile.in${comma_v}`"
# aclocal.m4 depends on ***/Makefile.am, configure.ac, acinclude.m4, *.m4 crap
touchme aclocal.m4${comma_v} \
`/usr/bin/find . -name Attic -prune -o -name Makefile.am${comma_v}` \
"configure.in${comma_v}" "configure.ac${comma_v}" \
"acinclude.m4${comma_v}"
# Makefile.in must be newer than Makefile.am
for f in $makefileins ; do
d="`dirname ${f}`"
touchme "${d}/Makefile.in${comma_v}" "${d}/Makefile.am${comma_v}"
done
# Makefile.in depends on aclocal.m4
for f in $makefileins ; do
d="`dirname $f`"
touchme "${d}/Makefile.in${comma_v}" "aclocal.m4${comma_v}"
done
# config.in must be newer than aclocal.m4 and configure.ac
if [ -f "config.in${comma_v}" ] ; then
touchme "config.in${comma_v}" "aclocal.m4${comma_v}" \
"configure.ac${comma_v}" \
"configure.in${comma_v}"
fi
# config.h.in (or More Thoroughly Modern configh.in)
# must be newer than aclocal.m4 and (obsolete) acconfig.h
for c_h_in in config.h.in configh.in ; do
if [ -f "${c_h_in}${comma_v}" ]; then
touchme "${c_h_in}${comma_v}" "aclocal.m4${comma_v}" "acconfig.h${comma_v}"
#>>>> WTF? Why? This is nonsensical
## ***/Makefile.in must be newer than config.h.in
#for f in $makefileins ; do
# touchme "$f" "${c_h_in}${comma_v}"
#done
fi
done
# configure must be newer than everything
# touchme configure $makefileins -- why would this be needed?
touchme "configure${comma_v}" "aclocal.m4${comma_v}" "acconfig.h${comma_v}" \
"config.in${comma_v}" "config.h.in${comma_v}" \
"configh.in${comma_v}"
if [ -n "${commit}" ] ; then
commit="${commit:9}" # strip off "--commit="
# First ***/Makefile.am,
# configure.in, configure.ac,
# ***/*.m4
# acconfig.h
cvs commit -m "${commit}" \
`for f in ${makefileins} ; do \
[ -f "$${f%.in}.am" ] && echo "$${f%.in}.am" ; \
done` \
`[ -f configure.in ] && echo configure.in` \
`[ -f configure.ac ] && echo configure.ac` \
`[ -f acconfig.h ] && echo acconfig.h` \
`/usr/bin/find . -name '*.m4' -mindepth 2`
# Next aclocal.m4
[ -f "aclocal.m4" ] && cvs commit -m "${commit}" aclocal.m4
# Next config.in, config.h.in, configh.in
[ -f "config.in" ] && cvs commit -m "${commit}" config.in
[ -f "config.h.in" ] && cvs commit -m "${commit}" config.h.in
[ -f "configh.in" ] && cvs commit -m "${commit}" configh.in
# Last ***/Makefile.in, configure
cvs commit -m "${commit}" ${makefileins} configure
fi
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