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#!/bin/sh
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#
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# Build a Mercurial RPM in place.
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#
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# Bryan O'Sullivan <bos@serpentine.com>
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#
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# Tested on
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# - Fedora 10
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# - Fedora 11
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# - Centos 5.3 (with Fedora EPEL repo for asciidoc)
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HG="`dirname $0`/../hg"
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PYTHONPATH="`dirname $0`/../mercurial/pure"
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export PYTHONPATH
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root="`$HG root 2>/dev/null`"
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specfile=contrib/mercurial.spec
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if [ -z "$root" ]; then
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echo 'You are not inside a Mercurial repository!' 1>&2
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exit 1
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fi
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rpmdir=/tmp/"`basename $root | sed 's/ /_/'`"-rpm # FIXME: Insecure /tmp handling
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cd "$root"
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rm -rf $rpmdir
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mkdir -p $rpmdir/RPMS
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$HG clone "$root" $rpmdir/BUILD
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if [ ! -f $specfile ]; then
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echo "Cannot find $specfile!" 1>&2
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exit 1
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fi
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tmpspec=/tmp/`basename "$specfile"`.$$ # FIXME: Insecure /tmp handling
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# Use the most recent tag as the version.
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version=`$HG tags | python -c 'import sys; print [l for l in sys.stdin.readlines() if l[0].isdigit()][0].split()[0]'`
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# Compute the release number as the difference in revision numbers
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# between the tip and the most recent tag.
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release=`$HG tags | python -c 'import sys; l = sys.stdin.readlines(); print int(l[0].split()[1].split(":")[0]) - int([x for x in l if x[0].isdigit()][0].split()[1].split(":")[0])'`
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tip=`$HG -q tip`
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# Beat up the spec file
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sed -e 's,^Source:.*,Source: /dev/null,' \
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-e "s,^Version:.*,Version: $version," \
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-e "s,^Release:.*,Release: $release," \
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-e "s,^%prep.*,Changeset: $tip\n\0," \
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-e 's,^%setup.*,,' \
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$specfile > $tmpspec
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cat <<EOF >> $tmpspec
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%changelog
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* `LANG=en_US date +'%a %b %d %Y'` `$HG showconfig ui.username` $version-$release
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- Automatically built via $0
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EOF
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$HG log \
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--template '* {date|rfc822date} {author}\n- {desc|firstline}\n\n' \
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.hgtags \
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| sed -e 's/^\(\* [MTWFS][a-z][a-z]\), \([0-3][0-9]\) \([A-Z][a-z][a-z]\) /\1 \3 \2 /' \
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-e '/^\* [MTWFS][a-z][a-z] /{s/ [012][0-9]:[0-9][0-9]:[0-9][0-9] [+-][0-9]\{4\}//}' \
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>> $tmpspec
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rpmbuild --define "_topdir $rpmdir" -bb $tmpspec
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if [ $? = 0 ]; then
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rm -rf $tmpspec $rpmdir/BUILD
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mv $rpmdir/RPMS/*/* $rpmdir && rm -r $rpmdir/RPMS
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echo
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echo "Packages are in $rpmdir:"
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ls -l $rpmdir/*.rpm
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fi
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