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authorSascha Hauer <s.hauer@pengutronix.de>2016-02-03 10:24:26 +0100
committerSascha Hauer <s.hauer@pengutronix.de>2016-02-04 08:40:35 +0100
commitd597afe7fbb0ac8ed0bcc48a5a73ca0ff62e7e63 (patch)
treed506afe0865a0bd5cc380e6bf751b38db77841b3 /dts/scripts/git-filter-branch
parent73b35531b70acd011a2b9e0558689d15e5ada781 (diff)
downloadbarebox-d597afe7fbb0ac8ed0bcc48a5a73ca0ff62e7e63.tar.gz
barebox-d597afe7fbb0ac8ed0bcc48a5a73ca0ff62e7e63.tar.xz
dts: update to v4.4-rc5
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/scripts/git-filter-branch')
-rwxr-xr-xdts/scripts/git-filter-branch557
1 files changed, 557 insertions, 0 deletions
diff --git a/dts/scripts/git-filter-branch b/dts/scripts/git-filter-branch
new file mode 100755
index 0000000000..0e839ae682
--- /dev/null
+++ b/dts/scripts/git-filter-branch
@@ -0,0 +1,557 @@
+#!/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.
+
+# The following functions will also be available in the commit filter:
+
+export PATH=/usr/lib/git-core:$PATH
+
+functions=$(cat << \EOF
+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 "$1";
+ shift;
+ done;
+}
+
+# if you run 'git_commit_non_empty_tree "$@"' in a commit filter,
+# it will skip commits that leave the tree untouched, commit the other.
+git_commit_non_empty_tree()
+{
+ if test $# = 3 && test "$1" = $(git rev-parse "$3^{tree}"); then
+ map "$3"
+ else
+ git commit-tree "$@"
+ fi
+}
+# override die(): this version puts in an extra line break, so that
+# the progress is still visible
+
+die()
+{
+ echo >&2
+ echo "$*" >&2
+ exit 1
+}
+EOF
+)
+
+eval "$functions"
+
+# 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' \([^<]*\) <[^>]*> .*$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_'$uid'_NAME='\''&'\''; export GIT_'$uid'_NAME/p
+
+ g
+ s/^'$lid' [^<]* <\([^>]*\)> .*$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_'$uid'_EMAIL='\''&'\''; export GIT_'$uid'_EMAIL/p
+
+ g
+ s/^'$lid' [^<]* <[^>]*> \(.*\)$/\1/
+ s/'\''/'\''\'\'\''/g
+ s/.*/GIT_'$uid'_DATE='\''&'\''; export GIT_'$uid'_DATE/p
+
+ q
+ }
+ '
+
+ LANG=C LC_ALL=C sed -ne "$pick_id_script"
+ # Ensure non-empty id name.
+ echo "case \"\$GIT_${uid}_NAME\" in \"\") GIT_${uid}_NAME=\"\${GIT_${uid}_EMAIL%%@*}\" && export GIT_${uid}_NAME;; esac"
+}
+
+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]
+ [--state-branch <branch>]
+ [<rev-list options>...]"
+
+OPTIONS_SPEC=
+. git-sh-setup
+
+if [ "$(is_bare_repository)" = false ]; then
+ require_clean_work_tree 'rewrite branches'
+fi
+
+tempdir=.git-rewrite
+filter_env=
+filter_tree=
+filter_index=
+filter_parent=
+filter_msg=cat
+filter_commit=
+filter_tag_name=
+filter_subdir=
+state_branch=
+orig_namespace=refs/original/
+force=
+prune_empty=
+remap_to_ancestor=
+while :
+do
+ case "$1" in
+ --)
+ shift
+ break
+ ;;
+ --force|-f)
+ shift
+ force=t
+ continue
+ ;;
+ --remap-to-ancestor)
+ # deprecated ($remap_to_ancestor is set now automatically)
+ shift
+ remap_to_ancestor=t
+ continue
+ ;;
+ --prune-empty)
+ shift
+ prune_empty=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="$functions; $OPTARG"
+ ;;
+ --tag-name-filter)
+ filter_tag_name="$OPTARG"
+ ;;
+ --subdirectory-filter)
+ filter_subdir="$OPTARG"
+ remap_to_ancestor=t
+ ;;
+ --original)
+ orig_namespace=$(expr "$OPTARG/" : '\(.*[^/]\)/*$')/
+ ;;
+ --state-branch)
+ state_branch="$OPTARG"
+ ;;
+ *)
+ usage
+ ;;
+ esac
+done
+
+case "$prune_empty,$filter_commit" in
+,)
+ filter_commit='git commit-tree "$@"';;
+t,)
+ filter_commit="$functions;"' git_commit_non_empty_tree "$@"';;
+,*)
+ ;;
+*)
+ die "Cannot set --prune-empty and --commit-filter at the same time"
+esac
+
+case "$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 ""
+
+# Remove tempdir on exit
+trap 'cd ../..; rm -rf "$tempdir"' 0
+
+ORIG_GIT_DIR="$GIT_DIR"
+ORIG_GIT_WORK_TREE="$GIT_WORK_TREE"
+ORIG_GIT_INDEX_FILE="$GIT_INDEX_FILE"
+GIT_WORK_TREE=.
+export GIT_DIR GIT_WORK_TREE
+
+# Make sure refs/original is empty
+git for-each-ref > "$tempdir"/backup-refs || exit
+while read sha1 type name
+do
+ case "$force,$name" in
+ ,$orig_namespace*)
+ die "Cannot create a new backup.
+A previous backup already exists in $orig_namespace
+Force overwriting the backup with -f"
+ ;;
+ t,$orig_namespace*)
+ git update-ref -d "$name" $sha1
+ ;;
+ esac
+done < "$tempdir"/backup-refs
+
+# The refs should be updated if their heads were rewritten
+git rev-parse --no-flags --revs-only --symbolic-full-name \
+ --default HEAD "$@" > "$tempdir"/raw-heads || exit
+sed -e '/^^/d' "$tempdir"/raw-heads >"$tempdir"/heads
+
+test -s "$tempdir"/heads ||
+ die "Which ref do you want to rewrite?"
+
+GIT_INDEX_FILE="$(pwd)/../index"
+export GIT_INDEX_FILE
+
+# map old->new commit ids for rewriting parents
+mkdir ../map || die "Could not create map/ directory"
+
+if [ -n "$state_branch" ] ; then
+ state_commit=`git show-ref -s "$state_branch"`
+ if [ -n "$state_commit" ] ; then
+ echo "Populating map from $state_branch ($state_commit)" 1>&2
+ git show "$state_commit":filter.map |
+ perl -n -e 'm/(.*):(.*)/ or die;
+ open F, ">../map/$1" or die;
+ print F "$2" or die;
+ close(F) or die'
+ else
+ echo "Branch $state_branch does not exist. Will create" 1>&2
+ fi
+fi
+
+# we need "--" only if there are no path arguments in $@
+nonrevs=$(git rev-parse --no-revs "$@") || exit
+if test -z "$nonrevs"
+then
+ dashdash=--
+else
+ dashdash=
+ remap_to_ancestor=t
+fi
+
+rev_args=$(git rev-parse --revs-only "$@")
+
+case "$filter_subdir" in
+"")
+ eval set -- "$(git rev-parse --sq --no-revs "$@")"
+ ;;
+*)
+ eval set -- "$(git rev-parse --sq --no-revs "$@" $dashdash \
+ "$filter_subdir")"
+ ;;
+esac
+
+git rev-list --reverse --topo-order --default HEAD \
+ --parents --simplify-merges $rev_args "$@" > ../revs ||
+ die "Could not get the commits"
+commits=$(wc -l <../revs | tr -d " ")
+
+test $commits -eq 0 && die "Found nothing to rewrite"
+
+# Rewrite the commits
+
+git_filter_branch__commit_count=0
+while read commit parents; do
+ git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1))
+ printf "\rRewrite $commit ($git_filter_branch__commit_count/$commits)"
+
+ case "$filter_subdir" in
+ "")
+ git read-tree -i -m $commit
+ ;;
+ *)
+ # The commit may not have the subdirectory at all
+ err=$(git read-tree -i -m $commit:"$filter_subdir" 2>&1) || {
+ if ! git rev-parse -q --verify $commit:"$filter_subdir"
+ then
+ rm -f "$GIT_INDEX_FILE"
+ else
+ echo >&2 "$err"
+ false
+ fi
+ }
+ esac || die "Could not initialize the index"
+
+ GIT_COMMIT=$commit
+ export GIT_COMMIT
+ git cat-file commit "$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 $commit removed are now still in the working tree;
+ # remove them, else they would be added again
+ git clean -d -q -f -x
+ eval "$filter_tree" < /dev/null ||
+ die "tree filter failed: $filter_tree"
+
+ (
+ git diff-index -r --name-only --ignore-submodules $commit &&
+ git ls-files --others
+ ) > "$tempdir"/tree-state || exit
+ git update-index --add --replace --remove --stdin \
+ < "$tempdir"/tree-state || exit
+ fi
+
+ eval "$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: $filter_msg"
+ workdir=$workdir /bin/sh -c "$filter_commit" "git commit-tree" \
+ $(git write-tree) $parentstr < ../message > ../map/$commit ||
+ die "could not write rewritten commit"
+done <../revs
+
+# If we are filtering for paths, as in the 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.
+# Ancestor remapping fixes this by mapping these heads to the unique
+# nearest ancestor that survived the pruning.
+
+if test "$remap_to_ancestor" = t
+then
+ while read ref
+ do
+ sha1=$(git rev-parse "$ref"^0)
+ test -f "$workdir"/../map/$sha1 && continue
+ ancestor=$(git rev-list --simplify-merges -1 "$ref" "$@")
+ test "$ancestor" && echo $(map $ancestor) >> "$workdir"/../map/$sha1
+ done < "$tempdir"/heads
+fi
+
+# 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"
+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"
+ if ! git update-ref -m "filter-branch: rewrite" \
+ "$ref" $rewritten $sha1 2>/dev/null; then
+ if test $(git cat-file -t "$ref") = tag; then
+ if test -z "$filter_tag_name"; then
+ warn "WARNING: You said to rewrite tagged commits, but not the corresponding tag."
+ warn "WARNING: Perhaps use '--tag-name-filter cat' to rewrite the tag."
+ fi
+ else
+ die "Could not rewrite $ref"
+ fi
+ fi
+ ;;
+ *)
+ # NEEDSWORK: possibly add -Werror, making this an error
+ warn "WARNING: '$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" $sha1 ||
+ exit
+done < "$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="$(git rev-parse -q "$sha1"^{commit})" || continue
+ fi
+
+ [ -f "../map/$sha1" ] || continue
+ new_sha1="$(cat "../map/$sha1")"
+ GIT_COMMIT="$sha1"
+ export GIT_COMMIT
+ 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
+ new_sha1=$( ( printf 'object %s\ntype commit\ntag %s\n' \
+ "$new_sha1" "$new_ref"
+ git cat-file tag "$ref" |
+ awk '/^tagger/ { tagged=1 }
+ /^$/ { if (!tagged && !done) { print "tagger Unknown <unknown@example.com> 0 +0000" } ; done=1 }
+ // { print }' |
+ sed -n \
+ -e '1,/^$/{
+ /^object /d
+ /^type /d
+ /^tag /d
+ }' \
+ -e '/^-----BEGIN PGP SIGNATURE-----/q' \
+ -e 'p' ) |
+ git mktag) ||
+ die "Could not create new tag object for $ref"
+ if git cat-file tag "$ref" | \
+ sane_grep '^-----BEGIN PGP SIGNATURE-----' >/dev/null 2>&1
+ then
+ warn "gpg signature stripped from tag object $sha1t"
+ fi
+ fi
+
+ git update-ref "refs/tags/$new_ref" "$new_sha1" ||
+ die "Could not write tag $new_ref"
+ done
+fi
+
+if [ -n "$state_branch" ] ; then
+ echo "Saving rewrite state to $state_branch" 1>&2
+ STATE_BLOB=$(ls ../map |
+ perl -n -e 'chomp();
+ open F, "<../map/$_" or die;
+ chomp($f = <F>); print "$_:$f\n";' |
+ git hash-object -w --stdin )
+ STATE_TREE=$(/bin/echo -e "100644 blob $STATE_BLOB\tfilter.map" | git mktree)
+ STATE_PARENT=$(git show-ref -s "$state_branch")
+ unset GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
+ unset GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL GIT_COMMITTER_DATE
+ if [ -n "$STATE_PARENT" ] ; then
+ STATE_COMMIT=$(/bin/echo "Sync" | git commit-tree "$STATE_TREE" -p "$STATE_PARENT")
+ else
+ STATE_COMMIT=$(/bin/echo "Sync" | git commit-tree "$STATE_TREE" )
+ fi
+ git update-ref "$state_branch" "$STATE_COMMIT"
+fi
+
+cd ../..
+rm -rf "$tempdir"
+
+trap - 0
+
+unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE
+test -z "$ORIG_GIT_DIR" || {
+ GIT_DIR="$ORIG_GIT_DIR" && export GIT_DIR
+}
+test -z "$ORIG_GIT_WORK_TREE" || {
+ GIT_WORK_TREE="$ORIG_GIT_WORK_TREE" &&
+ export GIT_WORK_TREE
+}
+test -z "$ORIG_GIT_INDEX_FILE" || {
+ GIT_INDEX_FILE="$ORIG_GIT_INDEX_FILE" &&
+ export GIT_INDEX_FILE
+}
+
+if [ "$(is_bare_repository)" = false ]; then
+ git read-tree -u -m HEAD || exit
+fi
+
+exit 0