#
# Copyright (C) 2009 Avery Pennarun <apenwarr@gmail.com>
#
-if [ $# -eq 0 ]; then
- set -- -h
+if test $# -eq 0
+then
+ set -- -h
fi
OPTS_SPEC="\
git subtree add --prefix=<prefix> <commit>
message=
prefix=
-debug()
-{
- if [ -n "$debug" ]; then
+debug () {
+ if test -n "$debug"
+ then
printf "%s\n" "$*" >&2
fi
}
-say()
-{
- if [ -z "$quiet" ]; then
+say () {
+ if test -z "$quiet"
+ then
printf "%s\n" "$*" >&2
fi
}
-progress()
-{
- if [ -z "$quiet" ]; then
+progress () {
+ if test -z "$quiet"
+ then
printf "%s\r" "$*" >&2
fi
}
-assert()
-{
- if "$@"; then
- :
- else
+assert () {
+ if ! "$@"
+ then
die "assertion failed: " "$@"
fi
}
-#echo "Options: $*"
-
-while [ $# -gt 0 ]; do
+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" ;;
+ -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 '$command'" ;;
+add|merge|pull)
+ default=
+ ;;
+split|push)
+ default="--default HEAD"
+ ;;
+*)
+ die "Unknown command '$command'"
+ ;;
esac
-if [ -z "$prefix" ]; then
+if test -z "$prefix"
+then
die "You must provide the --prefix option."
fi
case "$command" in
- add) [ -e "$prefix" ] &&
- die "prefix '$prefix' already exists." ;;
- *) [ -e "$prefix" ] ||
- die "'$prefix' does not exist; use 'git subtree add'" ;;
+add)
+ test -e "$prefix" &&
+ die "prefix '$prefix' already exists."
+ ;;
+*)
+ test -e "$prefix" ||
+ die "'$prefix' does not exist; use 'git subtree add'"
+ ;;
esac
dir="$(dirname "$prefix/.")"
-if [ "$command" != "pull" -a "$command" != "add" -a "$command" != "push" ]; then
+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 $?
- if [ -n "$dirs" ]; then
+ dirs=$(git rev-parse --no-revs --no-flags "$@") || exit $?
+ if test -n "$dirs"
+ then
die "Error: Use --prefix instead of bare filenames."
fi
fi
debug "opts: {$*}"
debug
-cache_setup()
-{
+cache_setup () {
cachedir="$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: $cachedir/notree"
+ rm -rf "$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 $*; do
- if [ -r "$cachedir/$oldrev" ]; then
+cache_get () {
+ for oldrev in "$@"
+ do
+ if test -r "$cachedir/$oldrev"
+ then
read newrev <"$cachedir/$oldrev"
echo $newrev
fi
done
}
-cache_miss()
-{
- for oldrev in $*; do
- if [ ! -r "$cachedir/$oldrev" ]; then
+cache_miss () {
+ for oldrev in "$@"
+ do
+ if ! test -r "$cachedir/$oldrev"
+ then
echo $oldrev
fi
done
}
-check_parents()
-{
- missed=$(cache_miss $*)
- for miss in $missed; do
- if [ ! -r "$cachedir/notree/$miss" ]; then
+check_parents () {
+ missed=$(cache_miss "$@")
+ for miss in $missed
+ do
+ if ! test -r "$cachedir/notree/$miss"
+ then
debug " incorrect order: $miss"
fi
done
}
-set_notree()
-{
+set_notree () {
echo "1" > "$cachedir/notree/$1"
}
-cache_set()
-{
+cache_set () {
oldrev="$1"
newrev="$2"
- if [ "$oldrev" != "latest_old" \
- -a "$oldrev" != "latest_new" \
- -a -e "$cachedir/$oldrev" ]; then
+ if test "$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
+rev_exists () {
+ if git rev-parse "$1" >/dev/null 2>&1
+ then
return 0
else
return 1
fi
}
-rev_is_descendant_of_branch()
-{
+rev_is_descendant_of_branch () {
newrev="$1"
branch="$2"
- branch_hash=$(git rev-parse $branch)
- match=$(git rev-list -1 $branch_hash ^$newrev)
+ branch_hash=$(git rev-parse "$branch")
+ match=$(git rev-list -1 "$branch_hash" "^$newrev")
- if [ -z "$match" ]; then
+ if test -z "$match"
+ then
return 0
else
return 1
# 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
+try_remove_previous () {
+ if rev_exists "$1^"
+ then
echo "^$1^"
fi
}
-find_latest_squash()
-{
+find_latest_squash () {
debug "Looking for latest squash ($dir)..."
dir="$1"
sq=
main=
sub=
git log --grep="^git-subtree-dir: $dir/*\$" \
- --pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD |
- while read a b junk; do
+ --no-show-signature --pretty=format:'START %H%n%s%n%n%b%nEND%n' HEAD |
+ while read a b junk
+ do
debug "$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 $sq"
- ;;
- END)
- if [ -n "$sub" ]; then
- if [ -n "$main" ]; then
- # a rejoin commit?
- # Pretend its sub was a squash.
- sq="$sub"
- fi
- debug "Squash found: $sq $sub"
- echo "$sq" "$sub"
- break
+ START)
+ sq="$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
- sq=
- main=
- sub=
- ;;
+ debug "Squash found: $sq $sub"
+ echo "$sq" "$sub"
+ break
+ fi
+ sq=
+ main=
+ sub=
+ ;;
esac
done
}
-find_existing_splits()
-{
+find_existing_splits () {
debug "Looking for prior splits..."
dir="$1"
revs="$2"
main=
sub=
git log --grep="^git-subtree-dir: $dir/*\$" \
- --pretty=format:'START %H%n%s%n%n%b%nEND%n' $revs |
- while read a b junk; do
+ --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 [ -z "$main" -a -n "$sub" ]; then
- # squash commits refer to a subtree
- debug " Squash: $sq from $sub"
- cache_set "$sq" "$sub"
- fi
- if [ -n "$main" -a -n "$sub" ]; then
- debug " Prior: $main -> $sub"
- cache_set $main $sub
- cache_set $sub $sub
- try_remove_previous "$main"
- try_remove_previous "$sub"
- fi
- main=
- sub=
- ;;
+ START)
+ sq="$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()
-{
+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 --pretty=format:'%an%n%ae%n%aD%n%cn%n%ce%n%cD%n%B' "$1" |
+ git log -1 --no-show-signature --pretty=format:'%an%n%ae%n%aD%n%cn%n%ce%n%cD%n%B' "$1" |
(
read GIT_AUTHOR_NAME
read GIT_AUTHOR_EMAIL
GIT_COMMITTER_NAME \
GIT_COMMITTER_EMAIL \
GIT_COMMITTER_DATE
- (printf "%s" "$annotate"; cat ) |
+ (
+ printf "%s" "$annotate"
+ cat
+ ) |
git commit-tree "$2" $3 # reads the rest of stdin
) || die "Can't copy commit $1"
}
-add_msg()
-{
+add_msg () {
dir="$1"
latest_old="$2"
latest_new="$3"
- if [ -n "$message" ]; then
+ 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: $latest_new
EOF
}
-add_squashed_msg()
-{
- if [ -n "$message" ]; then
+add_squashed_msg () {
+ if test -n "$message"
+ then
echo "$message"
else
echo "Merge commit '$1' as '$2'"
fi
}
-rejoin_msg()
-{
+rejoin_msg () {
dir="$1"
latest_old="$2"
latest_new="$3"
- if [ -n "$message" ]; then
+ 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()
-{
+squash_msg () {
dir="$1"
oldsub="$2"
newsub="$3"
newsub_short=$(git rev-parse --short "$newsub")
-
- if [ -n "$oldsub" ]; then
+
+ if test -n "$oldsub"
+ then
oldsub_short=$(git rev-parse --short "$oldsub")
echo "Squashed '$dir/' changes from $oldsub_short..$newsub_short"
echo
- git log --pretty=tformat:'%h %s' "$oldsub..$newsub"
- git log --pretty=tformat:'REVERT: %h %s' "$newsub..$oldsub"
+ 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()
-{
+toptree_for_commit () {
commit="$1"
- git log -1 --pretty=format:'%T' "$commit" -- || exit $?
+ git rev-parse --verify "$commit^{tree}" || exit $?
}
-subtree_for_commit()
-{
+subtree_for_commit () {
commit="$1"
dir="$2"
git ls-tree "$commit" -- "$dir" |
- while read mode type tree name; do
- assert [ "$name" = "$dir" ]
- assert [ "$type" = "tree" -o "$type" = "commit" ]
- [ "$type" = "commit" ] && continue # ignore submodules
+ 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_changed () {
tree=$1
shift
- if [ $# -ne 1 ]; then
+ if test $# -ne 1
+ then
return 0 # weird parents, consider it changed
else
ptree=$(toptree_for_commit $1)
- if [ "$ptree" != "$tree" ]; then
+ if test "$ptree" != "$tree"
+ then
return 0 # changed
else
return 1 # not changed
fi
}
-new_squash_commit()
-{
+new_squash_commit () {
old="$1"
oldsub="$2"
newsub="$3"
tree=$(toptree_for_commit $newsub) || exit $?
- if [ -n "$old" ]; then
- squash_msg "$dir" "$oldsub" "$newsub" |
- git commit-tree "$tree" -p "$old" || 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 $?
+ git commit-tree "$tree" || exit $?
fi
}
-copy_or_skip()
-{
+copy_or_skip () {
rev="$1"
tree="$2"
newparents="$3"
- assert [ -n "$tree" ]
+ assert test -n "$tree"
identical=
nonidentical=
p=
gotparents=
- for parent in $newparents; do
+ for parent in $newparents
+ do
ptree=$(toptree_for_commit $parent) || exit $?
- [ -z "$ptree" ] && continue
- if [ "$ptree" = "$tree" ]; then
+ test -z "$ptree" && continue
+ if test "$ptree" = "$tree"
+ then
# an identical parent could be used in place of this rev.
identical="$parent"
else
nonidentical="$parent"
fi
-
+
# sometimes both old parents map to the same newparent;
# eliminate duplicates
is_new=1
- for gp in $gotparents; do
- if [ "$gp" = "$parent" ]; then
+ for gp in $gotparents
+ do
+ if test "$gp" = "$parent"
+ then
is_new=
break
fi
done
- if [ -n "$is_new" ]; then
+ if test -n "$is_new"
+ then
gotparents="$gotparents $parent"
p="$p -p $parent"
fi
done
copycommit=
- if [ -n "$identical" ] && [ -n "$nonidentical" ]; then
+ if test -n "$identical" && test -n "$nonidentical"
+ then
extras=$(git rev-list --count $identical..$nonidentical)
- if [ "$extras" -ne 0 ]; then
+ if test "$extras" -ne 0
+ then
# we need to preserve history along the other branch
copycommit=1
fi
fi
- if [ -n "$identical" ] && [ -z "$copycommit" ]; then
+ if test -n "$identical" && test -z "$copycommit"
+ then
echo $identical
else
- copy_commit $rev $tree "$p" || exit $?
+ copy_commit "$rev" "$tree" "$p" || exit $?
fi
}
-ensure_clean()
-{
- if ! git diff-index HEAD --exit-code --quiet 2>&1; then
+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
+ if ! git diff-index --cached HEAD --exit-code --quiet 2>&1
+ then
die "Index has modifications. Cannot add."
fi
}
-ensure_valid_ref_format()
-{
+ensure_valid_ref_format () {
git check-ref-format "refs/heads/$1" ||
- die "'$1' does not look like a ref"
+ die "'$1' does not look like a ref"
}
-cmd_add()
-{
- if [ -e "$dir" ]; then
+cmd_add () {
+ if test -e "$dir"
+ then
die "'$dir' already exists. Cannot add."
fi
ensure_clean
-
- if [ $# -eq 1 ]; then
- git rev-parse -q --verify "$1^{commit}" >/dev/null ||
- die "'$1' does not refer to a commit"
-
- "cmd_add_commit" "$@"
- elif [ $# -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 "$2"
-
- "cmd_add_repository" "$@"
+
+ 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 '$@'"
- die "Provide either a commit or a repository and commit."
+ say "error: parameters were '$@'"
+ die "Provide either a commit or a repository and commit."
fi
}
-cmd_add_repository()
-{
+cmd_add_repository () {
echo "git fetch" "$@"
repository=$1
refspec=$2
cmd_add_commit "$@"
}
-cmd_add_commit()
-{
+cmd_add_commit () {
revs=$(git rev-parse $default --revs-only "$@") || exit $?
set -- $revs
rev="$1"
-
+
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 $?
- if [ -n "$headrev" -a "$headrev" != "$rev" ]; then
+ if test -n "$headrev" && test "$headrev" != "$rev"
+ then
headp="-p $headrev"
else
headp=
fi
-
- if [ -n "$squash" ]; then
+
+ 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 $?
+ git commit-tree "$tree" $headp -p "$rev") || exit $?
else
revp=$(peel_committish "$rev") &&
- commit=$(add_msg "$dir" "$headrev" "$rev" |
- git commit-tree $tree $headp -p "$revp") || exit $?
+ commit=$(add_msg "$dir" $headrev "$rev" |
+ git commit-tree "$tree" $headp -p "$revp") || exit $?
fi
git reset "$commit" || exit $?
-
+
say "Added dir '$dir'"
}
-cmd_split()
-{
+cmd_split () {
debug "Splitting $dir..."
cache_setup || exit $?
-
- if [ -n "$onto" ]; then
+
+ if test -n "$onto"
+ then
debug "Reading history for --onto=$onto..."
git rev-list $onto |
- while read rev; do
+ 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 $rev
+ cache_set "$rev" "$rev"
done
fi
-
- if [ -n "$ignore_joins" ]; then
+
+ if test -n "$ignore_joins"
+ then
unrevs=
else
unrevs="$(find_existing_splits "$dir" "$revs")"
fi
-
+
# We can't restrict rev-list to only $dir here, because some of our
# parents have the $dir contents the root, and those won't match.
# (and rev-list --follow doesn't seem to solve this)
revcount=0
createcount=0
eval "$grl" |
- while read rev parents; do
+ while read rev parents
+ do
revcount=$(($revcount + 1))
progress "$revcount/$revmax ($createcount)"
debug "Processing commit: $rev"
- exists=$(cache_get $rev)
- if [ -n "$exists" ]; then
+ exists=$(cache_get "$rev")
+ if test -n "$exists"
+ then
debug " prior: $exists"
continue
fi
debug " parents: $parents"
newparents=$(cache_get $parents)
debug " newparents: $newparents"
-
- tree=$(subtree_for_commit $rev "$dir")
+
+ tree=$(subtree_for_commit "$rev" "$dir")
debug " tree is: $tree"
check_parents $parents
-
+
# ugly. is there no better way to tell if this is a subtree
# vs. a mainline commit? Does it matter?
- if [ -z $tree ]; then
- set_notree $rev
- if [ -n "$newparents" ]; then
- cache_set $rev $rev
+ if test -z "$tree"
+ then
+ set_notree "$rev"
+ if test -n "$newparents"
+ then
+ cache_set "$rev" "$rev"
fi
continue
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 $rev
+ cache_set "$rev" "$newrev"
+ cache_set latest_new "$newrev"
+ cache_set latest_old "$rev"
done || exit $?
+
latest_new=$(cache_get latest_new)
- if [ -z "$latest_new" ]; then
+ if test -z "$latest_new"
+ then
die "No new revisions were found"
fi
-
- if [ -n "$rejoin" ]; then
+
+ if test -n "$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 $?
- fi
- if [ -n "$branch" ]; then
- if rev_exists "refs/heads/$branch"; then
- if ! rev_is_descendant_of_branch $latest_new $branch; then
+ -m "$(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 $?
+ git update-ref -m 'subtree split' \
+ "refs/heads/$branch" "$latest_new" || exit $?
say "$action branch '$branch'"
fi
- echo $latest_new
+ echo "$latest_new"
exit 0
}
-cmd_merge()
-{
+cmd_merge () {
revs=$(git rev-parse $default --revs-only "$@") || exit $?
ensure_clean
-
+
set -- $revs
- if [ $# -ne 1 ]; then
+ if test $# -ne 1
+ then
die "You must provide exactly one revision. Got: '$revs'"
fi
rev="$1"
-
- if [ -n "$squash" ]; then
+
+ if test -n "$squash"
+ then
first_split="$(find_latest_squash "$dir")"
- if [ -z "$first_split" ]; then
+ if test -z "$first_split"
+ then
die "Can't squash-merge: '$dir' was never added."
fi
set $first_split
old=$1
sub=$2
- if [ "$sub" = "$rev" ]; then
+ if test "$sub" = "$rev"
+ then
say "Subtree is already at commit $rev."
exit 0
fi
fi
version=$(git version)
- if [ "$version" \< "git version 1.7" ]; then
- if [ -n "$message" ]; then
- git merge -s subtree --message="$message" $rev
+ if test "$version" \< "git version 1.7"
+ then
+ if test -n "$message"
+ then
+ git merge -s subtree --message="$message" "$rev"
else
- git merge -s subtree $rev
+ git merge -s subtree "$rev"
fi
else
- if [ -n "$message" ]; then
- git merge -Xsubtree="$prefix" --message="$message" $rev
+ if test -n "$message"
+ then
+ git merge -Xsubtree="$prefix" \
+ --message="$message" "$rev"
else
git merge -Xsubtree="$prefix" $rev
fi
fi
}
-cmd_pull()
-{
- if [ $# -ne 2 ]; then
- die "You must provide <repository> <ref>"
+cmd_pull () {
+ if test $# -ne 2
+ then
+ die "You must provide <repository> <ref>"
fi
ensure_clean
ensure_valid_ref_format "$2"
cmd_merge "$@"
}
-cmd_push()
-{
- if [ $# -ne 2 ]; then
- die "You must provide <repository> <ref>"
+cmd_push () {
+ if test $# -ne 2
+ then
+ die "You must provide <repository> <ref>"
fi
ensure_valid_ref_format "$2"
- if [ -e "$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
+ 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 "'$dir' must already exist. Try 'git subtree add'."
+ die "'$dir' must already exist. Try 'git subtree add'."
fi
}