diff options
Diffstat (limited to 'third_party/git/contrib/subtree/git-subtree.sh')
| -rwxr-xr-x | third_party/git/contrib/subtree/git-subtree.sh | 901 |
1 files changed, 0 insertions, 901 deletions
diff --git a/third_party/git/contrib/subtree/git-subtree.sh b/third_party/git/contrib/subtree/git-subtree.sh deleted file mode 100755 index 868e18b9a1ab..000000000000 --- a/third_party/git/contrib/subtree/git-subtree.sh +++ /dev/null @@ -1,901 +0,0 @@ -#!/bin/sh -# -# git-subtree.sh: split/join git repositories in subdirectories of this one -# -# Copyright (C) 2009 Avery Pennarun <apenwarr@gmail.com> -# -if test $# -eq 0 -then - set -- -h -fi -OPTS_SPEC="\ -git subtree add --prefix=<prefix> <commit> -git subtree add --prefix=<prefix> <repository> <ref> -git subtree merge --prefix=<prefix> <commit> -git subtree pull --prefix=<prefix> <repository> <ref> -git subtree push --prefix=<prefix> <repository> <ref> -git subtree split --prefix=<prefix> <commit> --- -h,help show the help -q quiet -d show debug messages -P,prefix= the name of the subdir to split out -m,message= use the given message as the commit message for the merge commit - options for 'split' -annotate= add a prefix to commit message of new commits -b,branch= create a new branch from the split subtree -ignore-joins ignore prior --rejoin commits -onto= try connecting new tree to an existing one -rejoin merge the new branch back into HEAD - options for 'add', 'merge', and 'pull' -squash merge subtree changes as a single commit -" -eval "$(echo "$OPTS_SPEC" | git rev-parse --parseopt -- "$@" || echo exit $?)" - -PATH=$PATH:$(git --exec-path) -. git-sh-setup - -require_work_tree - -quiet= -branch= -debug= -command= -onto= -rejoin= -ignore_joins= -annotate= -squash= -message= -prefix= - -debug () { - if test -n "$debug" - then - printf "%s\n" "$*" >&2 - fi -} - -say () { - if test -z "$quiet" - then - printf "%s\n" "$*" >&2 - fi -} - -progress () { - if test -z "$quiet" - then - printf "%s\r" "$*" >&2 - fi -} - -assert () { - if ! "$@" - then - die "assertion failed: " "$@" - fi -} - -ensure_single_rev () { - if test $# -ne 1 - then - die "You must provide exactly one revision. Got: '$@'" - fi -} - -while test $# -gt 0 -do - opt="$1" - shift - - case "$opt" in - -q) - quiet=1 - ;; - -d) - debug=1 - ;; - --annotate) - annotate="$1" - shift - ;; - --no-annotate) - annotate= - ;; - -b) - branch="$1" - shift - ;; - -P) - prefix="${1%/}" - shift - ;; - -m) - message="$1" - shift - ;; - --no-prefix) - prefix= - ;; - --onto) - onto="$1" - shift - ;; - --no-onto) - onto= - ;; - --rejoin) - rejoin=1 - ;; - --no-rejoin) - rejoin= - ;; - --ignore-joins) - ignore_joins=1 - ;; - --no-ignore-joins) - ignore_joins= - ;; - --squash) - squash=1 - ;; - --no-squash) - squash= - ;; - --) - break - ;; - *) - die "Unexpected option: $opt" - ;; - esac -done - -command="$1" -shift - -case "$command" in -add|merge|pull) - default= - ;; -split|push) - default="--default HEAD" - ;; -*) - die "Unknown command '$command'" - ;; -esac - -if test -z "$prefix" -then - die "You must provide the --prefix option." -fi - -case "$command" in -add) - test -e "$prefix" && - die "prefix '$prefix' already exists." - ;; -*) - test -e "$prefix" || - die "'$prefix' does not exist; use 'git subtree add'" - ;; -esac - -dir="$(dirname "$prefix/.")" - -if test "$command" != "pull" && - test "$command" != "add" && - test "$command" != "push" -then - revs=$(git rev-parse $default --revs-only "$@") || exit $? - dirs=$(git rev-parse --no-revs --no-flags "$@") || exit $? - ensure_single_rev $revs - if test -n "$dirs" - then - die "Error: Use --prefix instead of bare filenames." - fi -fi - -debug "command: {$command}" -debug "quiet: {$quiet}" -debug "revs: {$revs}" -debug "dir: {$dir}" -debug "opts: {$*}" -debug - -cache_setup () { - cachedir="$GIT_DIR/subtree-cache/$$" - rm -rf "$cachedir" || - die "Can't delete old cachedir: $cachedir" - mkdir -p "$cachedir" || - die "Can't create new cachedir: $cachedir" - mkdir -p "$cachedir/notree" || - die "Can't create new cachedir: $cachedir/notree" - debug "Using cachedir: $cachedir" >&2 -} - -cache_get () { - for oldrev in "$@" - do - if test -r "$cachedir/$oldrev" - then - read newrev <"$cachedir/$oldrev" - echo $newrev - fi - done -} - -cache_miss () { - for oldrev in "$@" - do - if ! test -r "$cachedir/$oldrev" - then - echo $oldrev - fi - done -} - -check_parents () { - missed=$(cache_miss "$1") - local indent=$(($2 + 1)) - for miss in $missed - do - if ! test -r "$cachedir/notree/$miss" - then - debug " incorrect order: $miss" - process_split_commit "$miss" "" "$indent" - fi - done -} - -set_notree () { - echo "1" > "$cachedir/notree/$1" -} - -cache_set () { - oldrev="$1" - newrev="$2" - if test "$oldrev" != "latest_old" && - test "$oldrev" != "latest_new" && - test -e "$cachedir/$oldrev" - then - die "cache for $oldrev already exists!" - fi - echo "$newrev" >"$cachedir/$oldrev" -} - -rev_exists () { - if git rev-parse "$1" >/dev/null 2>&1 - then - return 0 - else - return 1 - fi -} - -rev_is_descendant_of_branch () { - newrev="$1" - branch="$2" - branch_hash=$(git rev-parse "$branch") - match=$(git rev-list -1 "$branch_hash" "^$newrev") - - if test -z "$match" - then - return 0 - else - return 1 - fi -} - -# if a commit doesn't have a parent, this might not work. But we only want -# to remove the parent from the rev-list, and since it doesn't exist, it won't -# be there anyway, so do nothing in that case. -try_remove_previous () { - if rev_exists "$1^" - then - echo "^$1^" - fi -} - -find_latest_squash () { - debug "Looking for latest squash ($dir)..." - dir="$1" - sq= - main= - sub= - git log --grep="^git-subtree-dir: $dir/*\$" \ - --no-show-signature --pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD | - while read a b junk - do - debug "$a $b $junk" - debug "{{$sq/$main/$sub}}" - case "$a" in - START) - sq="$b" - ;; - git-subtree-mainline:) - main="$b" - ;; - git-subtree-split:) - sub="$(git rev-parse "$b^0")" || - die "could not rev-parse split hash $b from commit $sq" - ;; - END) - if test -n "$sub" - then - if test -n "$main" - then - # a rejoin commit? - # Pretend its sub was a squash. - sq="$sub" - fi - debug "Squash found: $sq $sub" - echo "$sq" "$sub" - break - fi - sq= - main= - sub= - ;; - esac - done -} - -find_existing_splits () { - debug "Looking for prior splits..." - dir="$1" - revs="$2" - main= - sub= - local grep_format="^git-subtree-dir: $dir/*\$" - if test -n "$ignore_joins" - then - grep_format="^Add '$dir/' from commit '" - fi - git log --grep="$grep_format" \ - --no-show-signature --pretty=format:'START %H%n%s%n%n%b%nEND%n' $revs | - while read a b junk - do - case "$a" in - START) - sq="$b" - ;; - git-subtree-mainline:) - main="$b" - ;; - git-subtree-split:) - sub="$(git rev-parse "$b^0")" || - die "could not rev-parse split hash $b from commit $sq" - ;; - END) - debug " Main is: '$main'" - if test -z "$main" -a -n "$sub" - then - # squash commits refer to a subtree - debug " Squash: $sq from $sub" - cache_set "$sq" "$sub" - fi - if test -n "$main" -a -n "$sub" - then - debug " Prior: $main -> $sub" - cache_set $main $sub - cache_set $sub $sub - try_remove_previous "$main" - try_remove_previous "$sub" - fi - main= - sub= - ;; - esac - done -} - -copy_commit () { - # We're going to set some environment vars here, so - # do it in a subshell to get rid of them safely later - debug copy_commit "{$1}" "{$2}" "{$3}" - git log -1 --no-show-signature --pretty=format:'%an%n%ae%n%aD%n%cn%n%ce%n%cD%n%B' "$1" | - ( - read GIT_AUTHOR_NAME - read GIT_AUTHOR_EMAIL - read GIT_AUTHOR_DATE - read GIT_COMMITTER_NAME - read GIT_COMMITTER_EMAIL - read GIT_COMMITTER_DATE - export GIT_AUTHOR_NAME \ - GIT_AUTHOR_EMAIL \ - GIT_AUTHOR_DATE \ - GIT_COMMITTER_NAME \ - GIT_COMMITTER_EMAIL \ - GIT_COMMITTER_DATE - ( - printf "%s" "$annotate" - cat - ) | - git commit-tree "$2" $3 # reads the rest of stdin - ) || die "Can't copy commit $1" -} - -add_msg () { - dir="$1" - latest_old="$2" - latest_new="$3" - if test -n "$message" - then - commit_message="$message" - else - commit_message="Add '$dir/' from commit '$latest_new'" - fi - cat <<-EOF - $commit_message - - git-subtree-dir: $dir - git-subtree-mainline: $latest_old - git-subtree-split: $latest_new - EOF -} - -add_squashed_msg () { - if test -n "$message" - then - echo "$message" - else - echo "Merge commit '$1' as '$2'" - fi -} - -rejoin_msg () { - dir="$1" - latest_old="$2" - latest_new="$3" - if test -n "$message" - then - commit_message="$message" - else - commit_message="Split '$dir/' into commit '$latest_new'" - fi - cat <<-EOF - $commit_message - - git-subtree-dir: $dir - git-subtree-mainline: $latest_old - git-subtree-split: $latest_new - EOF -} - -squash_msg () { - dir="$1" - oldsub="$2" - newsub="$3" - newsub_short=$(git rev-parse --short "$newsub") - - if test -n "$oldsub" - then - oldsub_short=$(git rev-parse --short "$oldsub") - echo "Squashed '$dir/' changes from $oldsub_short..$newsub_short" - echo - git log --no-show-signature --pretty=tformat:'%h %s' "$oldsub..$newsub" - git log --no-show-signature --pretty=tformat:'REVERT: %h %s' "$newsub..$oldsub" - else - echo "Squashed '$dir/' content from commit $newsub_short" - fi - - echo - echo "git-subtree-dir: $dir" - echo "git-subtree-split: $newsub" -} - -toptree_for_commit () { - commit="$1" - git rev-parse --verify "$commit^{tree}" || exit $? -} - -subtree_for_commit () { - commit="$1" - dir="$2" - git ls-tree "$commit" -- "$dir" | - while read mode type tree name - do - assert test "$name" = "$dir" - assert test "$type" = "tree" -o "$type" = "commit" - test "$type" = "commit" && continue # ignore submodules - echo $tree - break - done -} - -tree_changed () { - tree=$1 - shift - if test $# -ne 1 - then - return 0 # weird parents, consider it changed - else - ptree=$(toptree_for_commit $1) - if test "$ptree" != "$tree" - then - return 0 # changed - else - return 1 # not changed - fi - fi -} - -new_squash_commit () { - old="$1" - oldsub="$2" - newsub="$3" - tree=$(toptree_for_commit $newsub) || exit $? - if test -n "$old" - then - squash_msg "$dir" "$oldsub" "$newsub" | - git commit-tree "$tree" -p "$old" || exit $? - else - squash_msg "$dir" "" "$newsub" | - git commit-tree "$tree" || exit $? - fi -} - -copy_or_skip () { - rev="$1" - tree="$2" - newparents="$3" - assert test -n "$tree" - - identical= - nonidentical= - p= - gotparents= - copycommit= - for parent in $newparents - do - ptree=$(toptree_for_commit $parent) || exit $? - test -z "$ptree" && continue - if test "$ptree" = "$tree" - then - # an identical parent could be used in place of this rev. - if test -n "$identical" - then - # if a previous identical parent was found, check whether - # one is already an ancestor of the other - mergebase=$(git merge-base $identical $parent) - if test "$identical" = "$mergebase" - then - # current identical commit is an ancestor of parent - identical="$parent" - elif test "$parent" != "$mergebase" - then - # no common history; commit must be copied - copycommit=1 - fi - else - # first identical parent detected - identical="$parent" - fi - else - nonidentical="$parent" - fi - - # sometimes both old parents map to the same newparent; - # eliminate duplicates - is_new=1 - for gp in $gotparents - do - if test "$gp" = "$parent" - then - is_new= - break - fi - done - if test -n "$is_new" - then - gotparents="$gotparents $parent" - p="$p -p $parent" - fi - done - - if test -n "$identical" && test -n "$nonidentical" - then - extras=$(git rev-list --count $identical..$nonidentical) - if test "$extras" -ne 0 - then - # we need to preserve history along the other branch - copycommit=1 - fi - fi - if test -n "$identical" && test -z "$copycommit" - then - echo $identical - else - copy_commit "$rev" "$tree" "$p" || exit $? - fi -} - -ensure_clean () { - if ! git diff-index HEAD --exit-code --quiet 2>&1 - then - die "Working tree has modifications. Cannot add." - fi - if ! git diff-index --cached HEAD --exit-code --quiet 2>&1 - then - die "Index has modifications. Cannot add." - fi -} - -ensure_valid_ref_format () { - git check-ref-format "refs/heads/$1" || - die "'$1' does not look like a ref" -} - -process_split_commit () { - local rev="$1" - local parents="$2" - local indent=$3 - - if test $indent -eq 0 - then - revcount=$(($revcount + 1)) - else - # processing commit without normal parent information; - # fetch from repo - parents=$(git rev-parse "$rev^@") - extracount=$(($extracount + 1)) - fi - - progress "$revcount/$revmax ($createcount) [$extracount]" - - debug "Processing commit: $rev" - exists=$(cache_get "$rev") - if test -n "$exists" - then - debug " prior: $exists" - return - fi - createcount=$(($createcount + 1)) - debug " parents: $parents" - check_parents "$parents" "$indent" - newparents=$(cache_get $parents) - debug " newparents: $newparents" - - tree=$(subtree_for_commit "$rev" "$dir") - debug " tree is: $tree" - - # ugly. is there no better way to tell if this is a subtree - # vs. a mainline commit? Does it matter? - if test -z "$tree" - then - set_notree "$rev" - if test -n "$newparents" - then - cache_set "$rev" "$rev" - fi - return - fi - - newrev=$(copy_or_skip "$rev" "$tree" "$newparents") || exit $? - debug " newrev is: $newrev" - cache_set "$rev" "$newrev" - cache_set latest_new "$newrev" - cache_set latest_old "$rev" -} - -cmd_add () { - if test -e "$dir" - then - die "'$dir' already exists. Cannot add." - fi - - ensure_clean - - if test $# -eq 1 - then - git rev-parse -q --verify "$1^{commit}" >/dev/null || - die "'$1' does not refer to a commit" - - cmd_add_commit "$@" - - elif test $# -eq 2 - then - # Technically we could accept a refspec here but we're - # just going to turn around and add FETCH_HEAD under the - # specified directory. Allowing a refspec might be - # misleading because we won't do anything with any other - # branches fetched via the refspec. - ensure_valid_ref_format "$2" - - cmd_add_repository "$@" - else - say "error: parameters were '$@'" - die "Provide either a commit or a repository and commit." - fi -} - -cmd_add_repository () { - echo "git fetch" "$@" - repository=$1 - refspec=$2 - git fetch "$@" || exit $? - revs=FETCH_HEAD - set -- $revs - cmd_add_commit "$@" -} - -cmd_add_commit () { - rev=$(git rev-parse $default --revs-only "$@") || exit $? - ensure_single_rev $rev - - debug "Adding $dir as '$rev'..." - git read-tree --prefix="$dir" $rev || exit $? - git checkout -- "$dir" || exit $? - tree=$(git write-tree) || exit $? - - headrev=$(git rev-parse HEAD) || exit $? - if test -n "$headrev" && test "$headrev" != "$rev" - then - headp="-p $headrev" - else - headp= - fi - - if test -n "$squash" - then - rev=$(new_squash_commit "" "" "$rev") || exit $? - commit=$(add_squashed_msg "$rev" "$dir" | - git commit-tree "$tree" $headp -p "$rev") || exit $? - else - revp=$(peel_committish "$rev") && - commit=$(add_msg "$dir" $headrev "$rev" | - git commit-tree "$tree" $headp -p "$revp") || exit $? - fi - git reset "$commit" || exit $? - - say "Added dir '$dir'" -} - -cmd_split () { - debug "Splitting $dir..." - cache_setup || exit $? - - if test -n "$onto" - then - debug "Reading history for --onto=$onto..." - git rev-list $onto | - while read rev - do - # the 'onto' history is already just the subdir, so - # any parent we find there can be used verbatim - debug " cache: $rev" - cache_set "$rev" "$rev" - done - fi - - unrevs="$(find_existing_splits "$dir" "$revs")" - - # We can't restrict rev-list to only $dir here, because some of our - # parents have the $dir contents the root, and those won't match. - # (and rev-list --follow doesn't seem to solve this) - grl='git rev-list --topo-order --reverse --parents $revs $unrevs' - revmax=$(eval "$grl" | wc -l) - revcount=0 - createcount=0 - extracount=0 - eval "$grl" | - while read rev parents - do - process_split_commit "$rev" "$parents" 0 - done || exit $? - - latest_new=$(cache_get latest_new) - if test -z "$latest_new" - then - die "No new revisions were found" - fi - - if test -n "$rejoin" - then - debug "Merging split branch into HEAD..." - latest_old=$(cache_get latest_old) - git merge -s ours \ - --allow-unrelated-histories \ - -m "$(rejoin_msg "$dir" "$latest_old" "$latest_new")" \ - "$latest_new" >&2 || exit $? - fi - if test -n "$branch" - then - if rev_exists "refs/heads/$branch" - then - if ! rev_is_descendant_of_branch "$latest_new" "$branch" - then - die "Branch '$branch' is not an ancestor of commit '$latest_new'." - fi - action='Updated' - else - action='Created' - fi - git update-ref -m 'subtree split' \ - "refs/heads/$branch" "$latest_new" || exit $? - say "$action branch '$branch'" - fi - echo "$latest_new" - exit 0 -} - -cmd_merge () { - rev=$(git rev-parse $default --revs-only "$@") || exit $? - ensure_single_rev $rev - ensure_clean - - if test -n "$squash" - then - first_split="$(find_latest_squash "$dir")" - if test -z "$first_split" - then - die "Can't squash-merge: '$dir' was never added." - fi - set $first_split - old=$1 - sub=$2 - if test "$sub" = "$rev" - then - say "Subtree is already at commit $rev." - exit 0 - fi - new=$(new_squash_commit "$old" "$sub" "$rev") || exit $? - debug "New squash commit: $new" - rev="$new" - fi - - version=$(git version) - if test "$version" \< "git version 1.7" - then - if test -n "$message" - then - git merge -s subtree --message="$message" "$rev" - else - git merge -s subtree "$rev" - fi - else - if test -n "$message" - then - git merge -Xsubtree="$prefix" \ - --message="$message" "$rev" - else - git merge -Xsubtree="$prefix" $rev - fi - fi -} - -cmd_pull () { - if test $# -ne 2 - then - die "You must provide <repository> <ref>" - fi - ensure_clean - ensure_valid_ref_format "$2" - git fetch "$@" || exit $? - revs=FETCH_HEAD - set -- $revs - cmd_merge "$@" -} - -cmd_push () { - if test $# -ne 2 - then - die "You must provide <repository> <ref>" - fi - ensure_valid_ref_format "$2" - if test -e "$dir" - then - repository=$1 - refspec=$2 - echo "git push using: " "$repository" "$refspec" - localrev=$(git subtree split --prefix="$prefix") || die - git push "$repository" "$localrev":"refs/heads/$refspec" - else - die "'$dir' must already exist. Try 'git subtree add'." - fi -} - -"cmd_$command" "$@" |