diff options
Diffstat (limited to 'git-rebase--interactive.sh')
| -rwxr-xr-x | git-rebase--interactive.sh | 292 |
1 files changed, 227 insertions, 65 deletions
diff --git a/git-rebase--interactive.sh b/git-rebase--interactive.sh index 929d681c47..3dc659dd58 100755 --- a/git-rebase--interactive.sh +++ b/git-rebase--interactive.sh @@ -26,6 +26,8 @@ i,interactive always used (no-op) continue continue rebasing process abort abort rebasing process and restore original branch skip skip current patch and continue rebasing process +no-verify override pre-rebase hook from stopping the operation +root rebase all reachable commmits up to the root(s) " . git-sh-setup @@ -37,10 +39,13 @@ DONE="$DOTEST"/done MSG="$DOTEST"/message SQUASH_MSG="$DOTEST"/message-squash REWRITTEN="$DOTEST"/rewritten +DROPPED="$DOTEST"/dropped PRESERVE_MERGES= STRATEGY= ONTO= VERBOSE= +OK_TO_SKIP_PRE_REBASE= +REBASE_ROOT= GIT_CHERRY_PICK_HELP=" After resolving the conflicts, mark the corrected paths with 'git add <paths>', and @@ -65,6 +70,17 @@ output () { esac } +run_pre_rebase_hook () { + if test -z "$OK_TO_SKIP_PRE_REBASE" && + test -x "$GIT_DIR/hooks/pre-rebase" + then + "$GIT_DIR/hooks/pre-rebase" ${1+"$@"} || { + echo >&2 "The pre-rebase hook refused to rebase." + exit 1 + } + fi +} + require_clean_work_tree () { # test if working tree is dirty git rev-parse --verify HEAD > /dev/null && @@ -101,9 +117,18 @@ mark_action_done () { } make_patch () { - parent_sha1=$(git rev-parse --verify "$1"^) || - die "Cannot get patch for $1^" - git diff-tree -p "$parent_sha1".."$1" > "$DOTEST"/patch + sha1_and_parents="$(git rev-list --parents -1 "$1")" + case "$sha1_and_parents" in + ?*' '?*' '?*) + git diff --cc $sha1_and_parents + ;; + ?*' '?*) + git diff-tree -p "$1^!" + ;; + *) + echo "Root commit" + ;; + esac > "$DOTEST"/patch test -f "$DOTEST"/message || git cat-file commit "$1" | sed "1,/^$/d" > "$DOTEST"/message test -f "$DOTEST"/author-script || @@ -131,6 +156,11 @@ pick_one () { output git rev-parse --verify $sha1 || die "Invalid commit name: $sha1" test -d "$REWRITTEN" && pick_one_preserving_merges "$@" && return + if test ! -z "$REBASE_ROOT" + then + output git cherry-pick "$@" + return + fi parent_sha1=$(git rev-parse --verify $sha1^) || die "Could not get the parent of $sha1" current_sha1=$(git rev-parse --verify HEAD) @@ -159,21 +189,43 @@ pick_one_preserving_merges () { if test -f "$DOTEST"/current-commit then - current_commit=$(cat "$DOTEST"/current-commit) && - git rev-parse HEAD > "$REWRITTEN"/$current_commit && - rm "$DOTEST"/current-commit || - die "Cannot write current commit's replacement sha1" + if test "$fast_forward" = t + then + cat "$DOTEST"/current-commit | while read current_commit + do + git rev-parse HEAD > "$REWRITTEN"/$current_commit + done + rm "$DOTEST"/current-commit || + die "Cannot write current commit's replacement sha1" + fi fi - echo $sha1 > "$DOTEST"/current-commit + echo $sha1 >> "$DOTEST"/current-commit # rewrite parents; if none were rewritten, we can fast-forward. new_parents= - for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -f2-) + pend=" $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-)" + if test "$pend" = " " + then + pend=" root" + fi + while [ "$pend" != "" ] do + p=$(expr "$pend" : ' \([^ ]*\)') + pend="${pend# $p}" + if test -f "$REWRITTEN"/$p then new_p=$(cat "$REWRITTEN"/$p) + + # If the todo reordered commits, and our parent is marked for + # rewriting, but hasn't been gotten to yet, assume the user meant to + # drop it on top of the current HEAD + if test -z "$new_p" + then + new_p=$(git rev-parse HEAD) + fi + test $p != $new_p && fast_forward=f case "$new_parents" in *$new_p*) @@ -183,7 +235,15 @@ pick_one_preserving_merges () { ;; esac else - new_parents="$new_parents $p" + if test -f "$DROPPED"/$p + then + fast_forward=f + replacement="$(cat "$DROPPED"/$p)" + test -z "$replacement" && replacement=root + pend=" $replacement$pend" + else + new_parents="$new_parents $p" + fi fi done case $fast_forward in @@ -193,15 +253,19 @@ pick_one_preserving_merges () { die "Cannot fast forward to $sha1" ;; f) - test "a$1" = a-n && die "Refusing to squash a merge: $sha1" - first_parent=$(expr "$new_parents" : ' \([^ ]*\)') - # detach HEAD to current parent - output git checkout $first_parent 2> /dev/null || - die "Cannot move HEAD to $first_parent" + + if [ "$1" != "-n" ] + then + # detach HEAD to current parent + output git checkout $first_parent 2> /dev/null || + die "Cannot move HEAD to $first_parent" + fi case "$new_parents" in ' '*' '*) + test "a$1" = a-n && die "Refusing to squash a merge: $sha1" + # redo merge author_script=$(get_author_ident_from_commit $sha1) eval "$author_script" @@ -214,9 +278,8 @@ pick_one_preserving_merges () { output git merge $STRATEGY -m "$msg" \ $new_parents then - git rerere printf "%s\n" "$msg" > "$GIT_DIR"/MERGE_MSG - die Error redoing merge $sha1 + die_with_patch $sha1 "Error redoing merge $sha1" fi ;; *) @@ -267,7 +330,7 @@ do_next () { "$DOTEST"/amend || exit read command sha1 rest < "$TODO" case "$command" in - '#'*|'') + '#'*|''|noop) mark_action_done ;; pick|p) @@ -284,7 +347,7 @@ do_next () { pick_one $sha1 || die_with_patch $sha1 "Could not apply $sha1... $rest" make_patch $sha1 - : > "$DOTEST"/amend + git rev-parse --verify HEAD > "$DOTEST"/amend warn "Stopped at $sha1... $rest" warn "You can amend the commit now, with" warn @@ -299,28 +362,31 @@ do_next () { squash|s) comment_for_reflog squash - has_action "$DONE" || + test -f "$DONE" && has_action "$DONE" || die "Cannot 'squash' without a previous commit" mark_action_done make_squash_message $sha1 > "$MSG" + failed=f + author_script=$(get_author_ident_from_commit HEAD) + output git reset --soft HEAD^ + pick_one -n $sha1 || failed=t case "$(peek_next_command)" in squash|s) - EDIT_COMMIT= USE_OUTPUT=output + MSG_OPT=-F + EDIT_OR_FILE="$MSG" cp "$MSG" "$SQUASH_MSG" ;; *) - EDIT_COMMIT=-e USE_OUTPUT= + MSG_OPT= + EDIT_OR_FILE=-e rm -f "$SQUASH_MSG" || exit + cp "$MSG" "$GIT_DIR"/SQUASH_MSG + rm -f "$GIT_DIR"/MERGE_MSG || exit ;; esac - - failed=f - author_script=$(get_author_ident_from_commit HEAD) - output git reset --soft HEAD^ - pick_one -n $sha1 || failed=t echo "$author_script" > "$DOTEST"/author-script if test $failed = f then @@ -329,7 +395,8 @@ do_next () { GIT_AUTHOR_NAME="$GIT_AUTHOR_NAME" \ GIT_AUTHOR_EMAIL="$GIT_AUTHOR_EMAIL" \ GIT_AUTHOR_DATE="$GIT_AUTHOR_DATE" \ - $USE_OUTPUT git commit --no-verify -F "$MSG" $EDIT_COMMIT || failed=t + $USE_OUTPUT git commit --no-verify \ + $MSG_OPT "$EDIT_OR_FILE" || failed=t fi if test $failed = t then @@ -350,20 +417,7 @@ do_next () { HEADNAME=$(cat "$DOTEST"/head-name) && OLDHEAD=$(cat "$DOTEST"/head) && SHORTONTO=$(git rev-parse --short $(cat "$DOTEST"/onto)) && - if test -d "$REWRITTEN" - then - test -f "$DOTEST"/current-commit && - current_commit=$(cat "$DOTEST"/current-commit) && - git rev-parse HEAD > "$REWRITTEN"/$current_commit - if test -f "$REWRITTEN"/$OLDHEAD - then - NEWHEAD=$(cat "$REWRITTEN"/$OLDHEAD) - else - NEWHEAD=$OLDHEAD - fi - else - NEWHEAD=$(git rev-parse HEAD) - fi && + NEWHEAD=$(git rev-parse HEAD) && case $HEADNAME in refs/*) message="$GIT_REFLOG_ACTION: $HEADNAME onto $SHORTONTO)" && @@ -401,11 +455,17 @@ get_saved_options () { test -d "$REWRITTEN" && PRESERVE_MERGES=t test -f "$DOTEST"/strategy && STRATEGY="$(cat "$DOTEST"/strategy)" test -f "$DOTEST"/verbose && VERBOSE=t + test -f "$DOTEST"/rebase-root && REBASE_ROOT=t } while test $# != 0 do case "$1" in + --no-verify) + OK_TO_SKIP_PRE_REBASE=yes + ;; + --verify) + ;; --continue) is_standalone "$@" || usage get_saved_options @@ -427,14 +487,22 @@ do else . "$DOTEST"/author-script || die "Cannot find the author identity" + amend= if test -f "$DOTEST"/amend then + amend=$(git rev-parse --verify HEAD) + test "$amend" = $(cat "$DOTEST"/amend) || + die "\ +You have uncommitted changes in your working tree. Please, commit them +first and then run 'git rebase --continue' again." git reset --soft HEAD^ || die "Cannot rewind the HEAD" fi export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE && - git commit --no-verify -F "$DOTEST"/message -e || - die "Could not commit staged changes." + git commit --no-verify -F "$DOTEST"/message -e || { + test -n "$amend" && git reset --soft $amend + die "Could not commit staged changes." + } fi require_clean_work_tree @@ -492,6 +560,9 @@ do -i) # yeah, we know ;; + --root) + REBASE_ROOT=t + ;; --onto) shift ONTO=$(git rev-parse --verify "$1") || @@ -499,26 +570,38 @@ do ;; --) shift - test $# -eq 1 -o $# -eq 2 || usage + test -z "$REBASE_ROOT" -a $# -ge 1 -a $# -le 2 || + test ! -z "$REBASE_ROOT" -a $# -le 1 || usage test -d "$DOTEST" && die "Interactive rebase already started" git var GIT_COMMITTER_IDENT >/dev/null || die "You need to set your committer info first" + if test -z "$REBASE_ROOT" + then + UPSTREAM_ARG="$1" + UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base" + test -z "$ONTO" && ONTO=$UPSTREAM + shift + else + UPSTREAM= + UPSTREAM_ARG=--root + test -z "$ONTO" && + die "You must specify --onto when using --root" + fi + run_pre_rebase_hook "$UPSTREAM_ARG" "$@" + comment_for_reflog start require_clean_work_tree - UPSTREAM=$(git rev-parse --verify "$1") || die "Invalid base" - test -z "$ONTO" && ONTO=$UPSTREAM - - if test ! -z "$2" + if test ! -z "$1" then - output git show-ref --verify --quiet "refs/heads/$2" || - die "Invalid branchname: $2" - output git checkout "$2" || - die "Could not checkout $2" + output git show-ref --verify --quiet "refs/heads/$1" || + die "Invalid branchname: $1" + output git checkout "$1" || + die "Could not checkout $1" fi HEAD=$(git rev-parse --verify HEAD) || die "No HEAD?" @@ -529,7 +612,12 @@ do echo "detached HEAD" > "$DOTEST"/head-name echo $HEAD > "$DOTEST"/head - echo $UPSTREAM > "$DOTEST"/upstream + case "$REBASE_ROOT" in + '') + rm -f "$DOTEST"/rebase-root ;; + *) + : >"$DOTEST"/rebase-root ;; + esac echo $ONTO > "$DOTEST"/onto test -z "$STRATEGY" || echo "$STRATEGY" > "$DOTEST"/strategy test t = "$VERBOSE" && : > "$DOTEST"/verbose @@ -542,27 +630,101 @@ do # This ensures that commits on merged, but otherwise # unrelated side branches are left alone. (Think "X" # in the man page's example.) - mkdir "$REWRITTEN" && - for c in $(git merge-base --all $HEAD $UPSTREAM) - do - echo $ONTO > "$REWRITTEN"/$c || + if test -z "$REBASE_ROOT" + then + mkdir "$REWRITTEN" && + for c in $(git merge-base --all $HEAD $UPSTREAM) + do + echo $ONTO > "$REWRITTEN"/$c || + die "Could not init rewritten commits" + done + else + mkdir "$REWRITTEN" && + echo $ONTO > "$REWRITTEN"/root || die "Could not init rewritten commits" - done + fi + # No cherry-pick because our first pass is to determine + # parents to rewrite and skipping dropped commits would + # prematurely end our probe MERGES_OPTION= + first_after_upstream="$(git rev-list --reverse --first-parent $UPSTREAM..$HEAD | head -n 1)" else - MERGES_OPTION=--no-merges + MERGES_OPTION="--no-merges --cherry-pick" fi - SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM) SHORTHEAD=$(git rev-parse --short $HEAD) SHORTONTO=$(git rev-parse --short $ONTO) + if test -z "$REBASE_ROOT" + # this is now equivalent to ! -z "$UPSTREAM" + then + SHORTUPSTREAM=$(git rev-parse --short $UPSTREAM) + REVISIONS=$UPSTREAM...$HEAD + SHORTREVISIONS=$SHORTUPSTREAM..$SHORTHEAD + else + REVISIONS=$ONTO...$HEAD + SHORTREVISIONS=$SHORTHEAD + fi git rev-list $MERGES_OPTION --pretty=oneline --abbrev-commit \ - --abbrev=7 --reverse --left-right --cherry-pick \ - $UPSTREAM...$HEAD | \ - sed -n "s/^>/pick /p" > "$TODO" + --abbrev=7 --reverse --left-right --topo-order \ + $REVISIONS | \ + sed -n "s/^>//p" | while read shortsha1 rest + do + if test t != "$PRESERVE_MERGES" + then + echo "pick $shortsha1 $rest" >> "$TODO" + else + sha1=$(git rev-parse $shortsha1) + if test -z "$REBASE_ROOT" + then + preserve=t + for p in $(git rev-list --parents -1 $sha1 | cut -d' ' -s -f2-) + do + if test -f "$REWRITTEN"/$p -a \( $p != $UPSTREAM -o $sha1 = $first_after_upstream \) + then + preserve=f + fi + done + else + preserve=f + fi + if test f = "$preserve" + then + touch "$REWRITTEN"/$sha1 + echo "pick $shortsha1 $rest" >> "$TODO" + fi + fi + done + + # Watch for commits that been dropped by --cherry-pick + if test t = "$PRESERVE_MERGES" + then + mkdir "$DROPPED" + # Save all non-cherry-picked changes + git rev-list $REVISIONS --left-right --cherry-pick | \ + sed -n "s/^>//p" > "$DOTEST"/not-cherry-picks + # Now all commits and note which ones are missing in + # not-cherry-picks and hence being dropped + git rev-list $REVISIONS | + while read rev + do + if test -f "$REWRITTEN"/$rev -a "$(grep "$rev" "$DOTEST"/not-cherry-picks)" = "" + then + # Use -f2 because if rev-list is telling us this commit is + # not worthwhile, we don't want to track its multiple heads, + # just the history of its first-parent for others that will + # be rebasing on top of it + git rev-list --parents -1 $rev | cut -d' ' -s -f2 > "$DROPPED"/$rev + short=$(git rev-list -1 --abbrev-commit --abbrev=7 $rev) + grep -v "^[a-z][a-z]* $short" <"$TODO" > "${TODO}2" ; mv "${TODO}2" "$TODO" + rm "$REWRITTEN"/$rev + fi + done + fi + + test -s "$TODO" || echo noop >> "$TODO" cat >> "$TODO" << EOF -# Rebase $SHORTUPSTREAM..$SHORTHEAD onto $SHORTONTO +# Rebase $SHORTREVISIONS onto $SHORTONTO # # Commands: # p, pick = use commit |