Mercurial > hg
view contrib/builddeb @ 30361:1070df141718
dirstate: change added/modified placeholder hash length to 20 bytes
Previously the added/modified placeholder hash for manifests generated from the
dirstate was a 21byte long string consisting of the p1 file hash plus a single
character to indicate an add or a modify. Normal hashes are only 20 bytes long.
This makes it complicated to implement more efficient manifest implementations
which rely on the hashes being fixed length.
Let's change this hash to just be 20 bytes long, and rely on the astronomical
improbability of an actual hash being these 20 bytes (just like we rely on no
hash every being the nullid).
This changes the possible behavior slightly in that the hash for all
added/modified entries in the dirstate manifest will now be the same (so simple
node comparisons would say they are equal), but we should never be doing simple
node comparisons on these nodes even with the old hashes, because they did not
accurately represent the content (i.e. two files based off the same p1 file
node, with different working copy contents would have the same hash (even with
the appended character) in the old scheme too, so we couldn't depend on the
hashes period).
author | Durham Goode <durham@fb.com> |
---|---|
date | Thu, 10 Nov 2016 02:19:16 -0800 |
parents | c4f0e764b231 |
children | f1c2552c2de7 |
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#!/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` DEBFLAGS=-b while [ "$1" ]; do case "$1" in --distid ) shift DISTID="$1" shift ;; --codename ) shift CODENAME="$1" shift ;; --cleanup ) shift BUILD= ;; --build ) shift CLEANUP= ;; --source-only ) shift DEBFLAGS=-S ;; * ) 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-$CODENAME-$node" elif [ "$DEBFLAGS" = "-S" ] ; then # for building a ppa (--source-only) for a release (distance == 0), we need # to version the distroseries so that we can upload to launchpad debver="$debver~${CODENAME}1" fi control=debian/control changelog=debian/changelog if [ "$BUILD" ]; then if [ -d debian ] ; then echo "Error! debian control directory already exists!" exit 1 fi cp -r $PWD/contrib/debian debian sed -i.tmp "s/__VERSION__/$debver/" $changelog sed -i.tmp "s/__DATE__/$(date --rfc-2822)/" $changelog sed -i.tmp "s/__CODENAME__/$CODENAME/" $changelog rm $changelog.tmp # remove the node from the version string SRCFILE="mercurial_$(echo $debver | sed "s,-$node,,").orig.tar.gz" "$PWD/hg" archive $SRCFILE mv $SRCFILE .. debuild -us -uc -i -I $DEBFLAGS 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 \ ../mercurial*.dsc ../mercurial*.gz \ -type f -newer $control -print0 2>/dev/null | \ xargs -Inarf -0 mv narf "$OUTPUTDIR" echo "Built packages for $debver:" find "$OUTPUTDIR" -type f -newer $control -name '*.deb' fi