revlog: fix revlogio.packentry corner case
We want to store version information about the revlog in the first
entry of its index. The code in packentry was using some heuristics
to detect whether this was the first entry, but these heuristics could
fail in some cases (e.g. rev 0 was empty; rev 1 descends directly from
the nullid and is stored as a delta).
We now give the revision number to packentry to avoid heuristics.
#!/bin/sh
#
# Build a Mercurial RPM in place.
#
# Bryan O'Sullivan <bos@serpentine.com>
root="`hg root 2>/dev/null`"
specfile=contrib/mercurial.spec
if [ -z "$root" ]; then
echo 'You are not inside a Mercurial repository!' 1>&2
exit 1
fi
rpmdir=/tmp/"`basename $root | sed 's/ /_/'`"-rpm
cd "$root"
rm -rf $rpmdir
mkdir -p $rpmdir/RPMS
hg clone "$root" $rpmdir/BUILD
if [ ! -f $specfile ]; then
echo "Cannot find $specfile!" 1>&2
exit 1
fi
tmpspec=/tmp/`basename "$specfile"`.$$
# Use the most recent tag as the version.
version=`hg tags | perl -e 'while(<STDIN>){if(/^(\d\S+)/){print$1;exit}}'`
# Compute the release number as the difference in revision numbers
# between the tip and the most recent tag.
release=`hg tags | perl -e 'while(<STDIN>){($tag,$id)=/^(\S+)\s+(\d+)/;if($tag eq "tip"){$tip = $id}elsif($tag=~/^\d/){print $tip-$id+1;exit}}'`
tip=`hg -q tip`
# Beat up the spec file
sed -e 's,^Source:.*,Source: /dev/null,' \
-e "s,^Version:.*,Version: $version," \
-e "s,^Release:.*,Release: $release," \
-e "s,^%prep.*,Changeset: $tip\n\0," \
-e 's,^%setup.*,,' \
$specfile > $tmpspec
cat <<EOF >> $tmpspec
%changelog
* `date +'%a %b %d %Y'` `hg showconfig ui.username` $version-$release
- Automatically built via $0
EOF
hg log \
--template '* {date|rfc822date} {author}\n- {desc|firstline}\n\n' \
.hgtags \
| sed -e 's/^\(\* [MTWFS][a-z][a-z]\), \([0-3][0-9]\) \([A-Z][a-z][a-z]\) /\1 \3 \2 /' \
-e '/^\* [MTWFS][a-z][a-z] /{s/ [012][0-9]:[0-9][0-9]:[0-9][0-9] [+-][0-9]\{4\}//}' \
>> $tmpspec
rpmbuild --define "_topdir $rpmdir" -bb $tmpspec
if [ $? = 0 ]; then
rm -rf $tmpspec $rpmdir/BUILD
mv $rpmdir/RPMS/*/* $rpmdir && rm -r $rpmdir/RPMS
echo
echo "Packages are in $rpmdir"
fi