contrib/builddeb

dirstate: add a C implementation for nonnormalentries

Before this patch, there was only a python version of nonnormalentries.
On mozilla-central we have a 10x win by putting this function in C:
% python -m timeit -s \
        'from mercurial import hg, ui, parsers; \
        repo = hg.repository(ui.ui(), "mozilla-central"); \
        m = repo.dirstate._map' \
        'parsers.nonnormalentries(m)'

100 loops, best of 3: 3.15 msec per loop

The python implementation runs in 31ms, a similar test gives:
10 loops, best of 3: 31.7 msec per loop

On our big repos, the win is still of 10x with the python implementation running
in 350ms and the C implementation running in 30ms.

#!/bin/sh -e
#
# Build a Mercurial debian package from the current repo
#
# Tested on Jessie (stable as of original script authoring.)

. $(dirname $0)/packagelib.sh

BUILD=1
CLEANUP=1
DISTID=`(lsb_release -is 2> /dev/null | tr '[:upper:]' '[:lower:]') || echo debian`
CODENAME=`lsb_release -cs 2> /dev/null || echo unknown`
while [ "$1" ]; do
    case "$1" in
    --distid )
        shift
        DISTID="$1"
        shift
        ;;
    --codename )
        shift
        CODENAME="$1"
        shift
        ;;
    --cleanup )
        shift
        BUILD=
        ;;
    --build )
        shift
        CLEANUP=
        ;;
    * )
        echo "Invalid parameter $1!" 1>&2
        exit 1
        ;;
    esac
done

trap "if [ '$CLEANUP' ] ; then rm -r '$PWD/debian' ; fi" EXIT

set -u

if [ ! -d .hg ]; then
    echo 'You are not inside a Mercurial repository!' 1>&2
    exit 1
fi

gethgversion
debver="$version"
if [ -n "$type" ] ; then
    debver="$debver~$type"
fi
if [ -n "$distance" ] ; then
    debver="$debver+$distance-$node"
fi

control=debian/control
changelog=debian/changelog

if [ "$BUILD" ]; then
    if [ -d debian ] ; then
        echo "Error! debian control directory already exists!"
        exit 1
    fi

    cp -r $PWD/contrib/debian debian
    chmod -R 0755 debian

    # This looks like sed -i, but sed -i behaves just differently enough
    # between BSD and GNU sed that I gave up and did the dumb thing.
    sed "s/__VERSION__/$debver/" < $changelog > $changelog.tmp
    date=$(date --rfc-2822)
    sed "s/__DATE__/$date/" < $changelog.tmp > $changelog
    rm $changelog.tmp

    debuild -us -uc -b
    if [ $? != 0 ]; then
        echo 'debuild failed!'
        exit 1
    fi

fi
if [ "$CLEANUP" ] ; then
    echo
    OUTPUTDIR=${OUTPUTDIR:=packages/$DISTID-$CODENAME}
    mkdir -p "$OUTPUTDIR"
    find ../mercurial*.deb ../mercurial_*.build ../mercurial_*.changes \
          -type f -newer $control -print0 | \
      xargs -Inarf -0 mv narf "$OUTPUTDIR"
    echo "Built packages for $debver:"
    find "$OUTPUTDIR" -type f -newer $control -name '*.deb'
fi