Staging
v0.5.1
v0.5.1
https://github.com/git/git
Revision 5587cac28be66acf5edc2a4b83b67c8cfffbc5e9 authored by Junio C Hamano on 02 September 2007, 22:16:44 UTC, committed by Junio C Hamano on 03 September 2007, 08:28:37 UTC
HPA noticed that yum does not like the newer git RPM set; it turns out that we do not ship git-p4 anymore but existing installations do not realize the package is gone if we do not tell anything about it. David Kastrup suggests using Obsoletes in the spec file of the new RPM to replace the old package, so here is a try. Signed-off-by: Junio C Hamano <gitster@pobox.com>
1 parent 030e0e5
Tip revision: 5587cac28be66acf5edc2a4b83b67c8cfffbc5e9 authored by Junio C Hamano on 02 September 2007, 22:16:44 UTC
GIT 1.5.3.1: obsolete git-p4 in RPM spec file.
GIT 1.5.3.1: obsolete git-p4 in RPM spec file.
Tip revision: 5587cac
git-filter-branch.sh
#!/bin/sh
#
# Rewrite revision history
# Copyright (c) Petr Baudis, 2006
# Minimal changes to "port" it to core-git (c) Johannes Schindelin, 2007
#
# Lets you rewrite the revision history of the current branch, creating
# a new branch. You can specify a number of filters to modify the commits,
# files and trees.
warn () {
echo "$*" >&2
}
map()
{
# if it was not rewritten, take the original
if test -r "$workdir/../map/$1"
then
cat "$workdir/../map/$1"
else
echo "$1"
fi
}
# if you run 'skip_commit "$@"' in a commit filter, it will print
# the (mapped) parents, effectively skipping the commit.
skip_commit()
{
shift;
while [ -n "$1" ];
do
shift;
map "$1";
shift;
done;
}
# override die(): this version puts in an extra line break, so that
# the progress is still visible
die()
{
echo >&2
echo "$*" >&2
exit 1
}
# When piped a commit, output a script to set the ident of either
# "author" or "committer
set_ident () {
lid="$(echo "$1" | tr "A-Z" "a-z")"
uid="$(echo "$1" | tr "a-z" "A-Z")"
pick_id_script='
/^'$lid' /{
s/'\''/'\''\\'\'\''/g
h
s/^'$lid' \([^<]*\) <[^>]*> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/export GIT_'$uid'_NAME='\''&'\''/p
g
s/^'$lid' [^<]* <\([^>]*\)> .*$/\1/
s/'\''/'\''\'\'\''/g
s/.*/export GIT_'$uid'_EMAIL='\''&'\''/p
g
s/^'$lid' [^<]* <[^>]*> \(.*\)$/\1/
s/'\''/'\''\'\'\''/g
s/.*/export GIT_'$uid'_DATE='\''&'\''/p
q
}
'
LANG=C LC_ALL=C sed -ne "$pick_id_script"
# Ensure non-empty id name.
echo "[ -n \"\$GIT_${uid}_NAME\" ] || export GIT_${uid}_NAME=\"\${GIT_${uid}_EMAIL%%@*}\""
}
# This script can be sourced by the commit filter to get the functions
test "a$SOURCE_FUNCTIONS" = a1 && return
this_script="$(cd "$(dirname "$0")"; pwd)"/$(basename "$0")
export this_script
USAGE="[--env-filter <command>] [--tree-filter <command>] \
[--index-filter <command>] [--parent-filter <command>] \
[--msg-filter <command>] [--commit-filter <command>] \
[--tag-name-filter <command>] [--subdirectory-filter <directory>] \
[--original <namespace>] [-d <directory>] [-f | --force] \
[<rev-list options>...]"
. git-sh-setup
tempdir=.git-rewrite
filter_env=
filter_tree=
filter_index=
filter_parent=
filter_msg=cat
filter_commit='git commit-tree "$@"'
filter_tag_name=
filter_subdir=
orig_namespace=refs/original/
force=
while case "$#" in 0) usage;; esac
do
case "$1" in
--)
shift
break
;;
--force|-f)
shift
force=t
continue
;;
-*)
;;
*)
break;
esac
# all switches take one argument
ARG="$1"
case "$#" in 1) usage ;; esac
shift
OPTARG="$1"
shift
case "$ARG" in
-d)
tempdir="$OPTARG"
;;
--env-filter)
filter_env="$OPTARG"
;;
--tree-filter)
filter_tree="$OPTARG"
;;
--index-filter)
filter_index="$OPTARG"
;;
--parent-filter)
filter_parent="$OPTARG"
;;
--msg-filter)
filter_msg="$OPTARG"
;;
--commit-filter)
filter_commit='SOURCE_FUNCTIONS=1 . "$this_script";'" $OPTARG"
;;
--tag-name-filter)
filter_tag_name="$OPTARG"
;;
--subdirectory-filter)
filter_subdir="$OPTARG"
;;
--original)
orig_namespace=$(expr "$OPTARG/" : '\(.*[^/]\)/*$')/
;;
*)
usage
;;
esac
done
case "$force" in
t)
rm -rf "$tempdir"
;;
'')
test -d "$tempdir" &&
die "$tempdir already exists, please remove it"
esac
mkdir -p "$tempdir/t" &&
tempdir="$(cd "$tempdir"; pwd)" &&
cd "$tempdir/t" &&
workdir="$(pwd)" ||
die ""
# Make sure refs/original is empty
git for-each-ref > "$tempdir"/backup-refs
while read sha1 type name
do
case "$force,$name" in
,$orig_namespace*)
die "Namespace $orig_namespace not empty"
;;
t,$orig_namespace*)
git update-ref -d "$name" $sha1
;;
esac
done < "$tempdir"/backup-refs
export GIT_DIR GIT_WORK_TREE=.
# These refs should be updated if their heads were rewritten
git rev-parse --revs-only --symbolic "$@" |
while read ref
do
# normalize ref
case "$ref" in
HEAD)
ref="$(git symbolic-ref "$ref")"
;;
refs/*)
;;
*)
ref="$(git for-each-ref --format='%(refname)' |
grep /"$ref")"
esac
git check-ref-format "$ref" && echo "$ref"
done > "$tempdir"/heads
test -s "$tempdir"/heads ||
die "Which ref do you want to rewrite?"
export GIT_INDEX_FILE="$(pwd)/../index"
git read-tree || die "Could not seed the index"
ret=0
# map old->new commit ids for rewriting parents
mkdir ../map || die "Could not create map/ directory"
case "$filter_subdir" in
"")
git rev-list --reverse --topo-order --default HEAD \
--parents "$@"
;;
*)
git rev-list --reverse --topo-order --default HEAD \
--parents --full-history "$@" -- "$filter_subdir"
esac > ../revs || die "Could not get the commits"
commits=$(wc -l <../revs | tr -d " ")
test $commits -eq 0 && die "Found nothing to rewrite"
# Rewrite the commits
i=0
while read commit parents; do
i=$(($i+1))
printf "\rRewrite $commit ($i/$commits)"
case "$filter_subdir" in
"")
git read-tree -i -m $commit
;;
*)
git read-tree -i -m $commit:"$filter_subdir"
esac || die "Could not initialize the index"
export GIT_COMMIT=$commit
git cat-file commit "$commit" >../commit ||
die "Cannot read commit $commit"
eval "$(set_ident AUTHOR <../commit)" ||
die "setting author failed for commit $commit"
eval "$(set_ident COMMITTER <../commit)" ||
die "setting committer failed for commit $commit"
eval "$filter_env" < /dev/null ||
die "env filter failed: $filter_env"
if [ "$filter_tree" ]; then
git checkout-index -f -u -a ||
die "Could not checkout the index"
# files that $commit removed are now still in the working tree;
# remove them, else they would be added again
git ls-files -z --others | xargs -0 rm -f
eval "$filter_tree" < /dev/null ||
die "tree filter failed: $filter_tree"
git diff-index -r $commit | cut -f 2- | tr '\n' '\0' | \
xargs -0 git update-index --add --replace --remove
git ls-files -z --others | \
xargs -0 git update-index --add --replace --remove
fi
eval "$filter_index" < /dev/null ||
die "index filter failed: $filter_index"
parentstr=
for parent in $parents; do
for reparent in $(map "$parent"); do
parentstr="$parentstr -p $reparent"
done
done
if [ "$filter_parent" ]; then
parentstr="$(echo "$parentstr" | eval "$filter_parent")" ||
die "parent filter failed: $filter_parent"
fi
sed -e '1,/^$/d' <../commit | \
eval "$filter_msg" > ../message ||
die "msg filter failed: $filter_msg"
sh -c "$filter_commit" "git commit-tree" \
$(git write-tree) $parentstr < ../message > ../map/$commit
done <../revs
# In case of a subdirectory filter, it is possible that a specified head
# is not in the set of rewritten commits, because it was pruned by the
# revision walker. Fix it by mapping these heads to the next rewritten
# ancestor(s), i.e. the boundaries in the set of rewritten commits.
# NEEDSWORK: we should sort the unmapped refs topologically first
while read ref
do
sha1=$(git rev-parse "$ref"^0)
test -f "$workdir"/../map/$sha1 && continue
# Assign the boundarie(s) in the set of rewritten commits
# as the replacement commit(s).
# (This would look a bit nicer if --not --stdin worked.)
for p in $( (cd "$workdir"/../map; ls | sed "s/^/^/") |
git rev-list $ref --boundary --stdin |
sed -n "s/^-//p")
do
map $p >> "$workdir"/../map/$sha1
done
done < "$tempdir"/heads
# Finally update the refs
_x40='[0-9a-f][0-9a-f][0-9a-f][0-9a-f][0-9a-f]'
_x40="$_x40$_x40$_x40$_x40$_x40$_x40$_x40$_x40"
count=0
echo
while read ref
do
# avoid rewriting a ref twice
test -f "$orig_namespace$ref" && continue
sha1=$(git rev-parse "$ref"^0)
rewritten=$(map $sha1)
test $sha1 = "$rewritten" &&
warn "WARNING: Ref '$ref' is unchanged" &&
continue
case "$rewritten" in
'')
echo "Ref '$ref' was deleted"
git update-ref -m "filter-branch: delete" -d "$ref" $sha1 ||
die "Could not delete $ref"
;;
$_x40)
echo "Ref '$ref' was rewritten"
git update-ref -m "filter-branch: rewrite" \
"$ref" $rewritten $sha1 ||
die "Could not rewrite $ref"
;;
*)
# NEEDSWORK: possibly add -Werror, making this an error
warn "WARNING: '$ref' was rewritten into multiple commits:"
warn "$rewritten"
warn "WARNING: Ref '$ref' points to the first one now."
rewritten=$(echo "$rewritten" | head -n 1)
git update-ref -m "filter-branch: rewrite to first" \
"$ref" $rewritten $sha1 ||
die "Could not rewrite $ref"
;;
esac
git update-ref -m "filter-branch: backup" "$orig_namespace$ref" $sha1
count=$(($count+1))
done < "$tempdir"/heads
# TODO: This should possibly go, with the semantics that all positive given
# refs are updated, and their original heads stored in refs/original/
# Filter tags
if [ "$filter_tag_name" ]; then
git for-each-ref --format='%(objectname) %(objecttype) %(refname)' refs/tags |
while read sha1 type ref; do
ref="${ref#refs/tags/}"
# XXX: Rewrite tagged trees as well?
if [ "$type" != "commit" -a "$type" != "tag" ]; then
continue;
fi
if [ "$type" = "tag" ]; then
# Dereference to a commit
sha1t="$sha1"
sha1="$(git rev-parse "$sha1"^{commit} 2>/dev/null)" || continue
fi
[ -f "../map/$sha1" ] || continue
new_sha1="$(cat "../map/$sha1")"
export GIT_COMMIT="$sha1"
new_ref="$(echo "$ref" | eval "$filter_tag_name")" ||
die "tag name filter failed: $filter_tag_name"
echo "$ref -> $new_ref ($sha1 -> $new_sha1)"
if [ "$type" = "tag" ]; then
# Warn that we are not rewriting the tag object itself.
warn "unreferencing tag object $sha1t"
fi
git update-ref "refs/tags/$new_ref" "$new_sha1" ||
die "Could not write tag $new_ref"
done
fi
cd ../..
rm -rf "$tempdir"
echo
test $count -gt 0 && echo "These refs were rewritten:"
git show-ref | grep ^"$orig_namespace"
exit $ret
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