diff options
Diffstat (limited to 'third_party/git/git-filter-branch.sh')
| -rwxr-xr-x | third_party/git/git-filter-branch.sh | 662 |
1 files changed, 0 insertions, 662 deletions
diff --git a/third_party/git/git-filter-branch.sh b/third_party/git/git-filter-branch.sh deleted file mode 100755 index 5c5afa2b98..0000000000 --- a/third_party/git/git-filter-branch.sh +++ /dev/null @@ -1,662 +0,0 @@ -#!/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: - -functions=$(cat << \EOF -EMPTY_TREE=$(git hash-object -t tree /dev/null) - -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" - elif test $# = 1 && test "$1" = $EMPTY_TREE; then - : - else - git commit-tree "$@" - 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" - -finish_ident() { - # Ensure non-empty id name. - echo "case \"\$GIT_$1_NAME\" in \"\") GIT_$1_NAME=\"\${GIT_$1_EMAIL%%@*}\" && export GIT_$1_NAME;; esac" - # And make sure everything is exported. - echo "export GIT_$1_NAME" - echo "export GIT_$1_EMAIL" - echo "export GIT_$1_DATE" -} - -set_ident () { - parse_ident_from_commit author AUTHOR committer COMMITTER - finish_ident AUTHOR - finish_ident COMMITTER -} - -USAGE="[--setup <command>] [--subdirectory-filter <directory>] [--env-filter <command>] - [--tree-filter <command>] [--index-filter <command>] - [--parent-filter <command>] [--msg-filter <command>] - [--commit-filter <command>] [--tag-name-filter <command>] - [--original <namespace>] - [-d <directory>] [-f | --force] [--state-branch <branch>] - [--] [<rev-list options>...]" - -OPTIONS_SPEC= -. git-sh-setup - -if [ "$(is_bare_repository)" = false ]; then - require_clean_work_tree 'rewrite branches' -fi - -tempdir=.git-rewrite -filter_setup= -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="$OPTARG" - ;; - --setup) - filter_setup="$OPTARG" - ;; - --subdirectory-filter) - filter_subdir="$OPTARG" - remap_to_ancestor=t - ;; - --env-filter) - filter_env="$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" - ;; - --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 "$tempdir already exists, please remove it" -esac -orig_dir=$(pwd) -mkdir -p "$tempdir/t" && -tempdir="$(cd "$tempdir"; pwd)" && -cd "$tempdir/t" && -workdir="$(pwd)" || -die "" - -# Remove tempdir on exit -trap 'cd "$orig_dir"; rm -rf "$tempdir"' 0 - -ORIG_GIT_DIR="$GIT_DIR" -ORIG_GIT_WORK_TREE="$GIT_WORK_TREE" -ORIG_GIT_INDEX_FILE="$GIT_INDEX_FILE" -ORIG_GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" -ORIG_GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" -ORIG_GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" -ORIG_GIT_COMMITTER_NAME="$GIT_COMMITTER_NAME" -ORIG_GIT_COMMITTER_EMAIL="$GIT_COMMITTER_EMAIL" -ORIG_GIT_COMMITTER_DATE="$GIT_COMMITTER_DATE" - -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-refs || exit -while read ref -do - case "$ref" in ^?*) continue ;; esac - - if git rev-parse --verify "$ref"^0 >/dev/null 2>&1 - then - echo "$ref" - else - warn "WARNING: not rewriting '$ref' (not a committish)" - fi -done >"$tempdir"/heads <"$tempdir"/raw-refs - -test -s "$tempdir"/heads || - die "You must specify a ref to rewrite." - -GIT_INDEX_FILE="$(pwd)/../index" -export GIT_INDEX_FILE - -# map old->new commit ids for rewriting parents -mkdir ../map || die "Could not create map/ directory" - -if test -n "$state_branch" -then - state_commit=$(git rev-parse --no-flags --revs-only "$state_branch") - if test -n "$state_commit" - then - echo "Populating map from $state_branch ($state_commit)" 1>&2 - perl -e'open(MAP, "-|", "git show $ARGV[0]:filter.map") or die; - while (<MAP>) { - m/(.*):(.*)/ or die; - open F, ">../map/$1" or die; - print F "$2" or die; - close(F) or die; - } - close(MAP) or die;' "$state_commit" \ - || die "Unable to load state from $state_branch:filter.map" - 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 - -git rev-parse --revs-only "$@" >../parse - -case "$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 --stdin "$@" <../parse >../revs || - die "Could not get the commits" -commits=$(wc -l <../revs | tr -d " ") - -test $commits -eq 0 && die_with_status 2 "Found nothing to rewrite" - -# Rewrite the commits -report_progress () -{ - if test -n "$progress" && - test $git_filter_branch__commit_count -gt $next_sample_at - then - count=$git_filter_branch__commit_count - - now=$(date +%s) - elapsed=$(($now - $start_timestamp)) - remaining=$(( ($commits - $count) * $elapsed / $count )) - if test $elapsed -gt 0 - then - next_sample_at=$(( ($elapsed + 1) * $count / $elapsed )) - else - next_sample_at=$(($next_sample_at + 1)) - fi - progress=" ($elapsed seconds passed, remaining $remaining predicted)" - fi - printf "\rRewrite $commit ($count/$commits)$progress " -} - -git_filter_branch__commit_count=0 - -progress= start_timestamp= -if date '+%s' 2>/dev/null | grep -q '^[0-9][0-9]*$' -then - next_sample_at=0 - progress="dummy to ensure this is not empty" - start_timestamp=$(date '+%s') -fi - -if test -n "$filter_index" || - test -n "$filter_tree" || - test -n "$filter_subdir" -then - need_index=t -else - need_index= -fi - -eval "$filter_setup" < /dev/null || - die "filter setup failed: $filter_setup" - -while read commit parents; do - git_filter_branch__commit_count=$(($git_filter_branch__commit_count+1)) - - report_progress - test -f "$workdir"/../map/$commit && continue - - case "$filter_subdir" in - "") - if test -n "$need_index" - then - GIT_ALLOW_NULL_SHA1=1 git read-tree -i -m $commit - fi - ;; - *) - # The commit may not have the subdirectory at all - err=$(GIT_ALLOW_NULL_SHA1=1 \ - 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 <../commit)" || - die "setting author/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 - case "$parentstr " in - *" -p $reparent "*) - ;; - *) - parentstr="$parentstr -p $reparent" - ;; - esac - done - done - if [ "$filter_parent" ]; then - parentstr="$(echo "$parentstr" | eval "$filter_parent")" || - die "parent filter failed: $filter_parent" - fi - - { - while IFS='' read -r header_line && test -n "$header_line" - do - # skip header lines... - :; - done - # and output the actual commit message - cat - } <../commit | - eval "$filter_msg" > ../message || - die "msg filter failed: $filter_msg" - - if test -n "$need_index" - then - tree=$(git write-tree) - else - tree=$(git rev-parse "$commit^{tree}") - fi - workdir=$workdir @SHELL_PATH@ -c "$filter_commit" "git commit-tree" \ - "$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" | - sed -n \ - -e '1,/^$/{ - /^object /d - /^type /d - /^tag /d - }' \ - -e '/^-----BEGIN PGP SIGNATURE-----/q' \ - -e 'p' ) | - git hash-object -t tag -w --stdin) || - 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 $new_ref" - done -fi - -unset GIT_DIR GIT_WORK_TREE GIT_INDEX_FILE -unset GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE -unset GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL GIT_COMMITTER_DATE -test -z "$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="$ORIG_GIT_INDEX_FILE" && - export GIT_INDEX_FILE -} -test -z "$ORIG_GIT_AUTHOR_NAME" || { - GIT_AUTHOR_NAME="$ORIG_GIT_AUTHOR_NAME" && - export GIT_AUTHOR_NAME -} -test -z "$ORIG_GIT_AUTHOR_EMAIL" || { - GIT_AUTHOR_EMAIL="$ORIG_GIT_AUTHOR_EMAIL" && - export GIT_AUTHOR_EMAIL -} -test -z "$ORIG_GIT_AUTHOR_DATE" || { - GIT_AUTHOR_DATE="$ORIG_GIT_AUTHOR_DATE" && - export GIT_AUTHOR_DATE -} -test -z "$ORIG_GIT_COMMITTER_NAME" || { - GIT_COMMITTER_NAME="$ORIG_GIT_COMMITTER_NAME" && - export GIT_COMMITTER_NAME -} -test -z "$ORIG_GIT_COMMITTER_EMAIL" || { - GIT_COMMITTER_EMAIL="$ORIG_GIT_COMMITTER_EMAIL" && - export GIT_COMMITTER_EMAIL -} -test -z "$ORIG_GIT_COMMITTER_DATE" || { - GIT_COMMITTER_DATE="$ORIG_GIT_COMMITTER_DATE" && - export GIT_COMMITTER_DATE -} - -if test -n "$state_branch" -then - echo "Saving rewrite state to $state_branch" 1>&2 - state_blob=$( - perl -e'opendir D, "../map" or die; - open H, "|-", "git hash-object -w --stdin" or die; - foreach (sort readdir(D)) { - next if m/^\.\.?$/; - open F, "<../map/$_" or die; - chomp($f = <F>); - print H "$_:$f\n" or die; - } - close(H) or die;' || die "Unable to save state") - state_tree=$(printf '100644 blob %s\tfilter.map\n' "$state_blob" | git mktree) - if test -n "$state_commit" - then - state_commit=$(echo "Sync" | git commit-tree "$state_tree" -p "$state_commit") - else - state_commit=$(echo "Sync" | git commit-tree "$state_tree" ) - fi - git update-ref "$state_branch" "$state_commit" -fi - -cd "$orig_dir" -rm -rf "$tempdir" - -trap - 0 - -if [ "$(is_bare_repository)" = false ]; then - git read-tree -u -m HEAD || exit -fi - -exit 0 |