mirror of
https://github.com/git/git.git
synced 2024-11-30 21:44:02 +08:00
341 lines
8.7 KiB
Bash
Executable File
341 lines
8.7 KiB
Bash
Executable File
#!/bin/sh
|
|
#
|
|
# Copyright (c) 2005 Junio C Hamano
|
|
#
|
|
# Fetch one or more remote refs and merge it/them into the current HEAD.
|
|
|
|
USAGE='[-n | --no-stat] [--[no-]commit] [--[no-]squash] [--[no-]ff|--ff-only] [--[no-]rebase|--rebase=preserve] [-s strategy]... [<fetch-options>] <repo> <head>...'
|
|
LONG_USAGE='Fetch one or more remote refs and integrate it/them with the current HEAD.'
|
|
SUBDIRECTORY_OK=Yes
|
|
OPTIONS_SPEC=
|
|
. git-sh-setup
|
|
. git-sh-i18n
|
|
set_reflog_action "pull${1+ $*}"
|
|
require_work_tree_exists
|
|
cd_to_toplevel
|
|
|
|
|
|
die_conflict () {
|
|
git diff-index --cached --name-status -r --ignore-submodules HEAD --
|
|
if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
|
|
die "$(gettext "Pull is not possible because you have unmerged files.
|
|
Please, fix them up in the work tree, and then use 'git add/rm <file>'
|
|
as appropriate to mark resolution, or use 'git commit -a'.")"
|
|
else
|
|
die "$(gettext "Pull is not possible because you have unmerged files.")"
|
|
fi
|
|
}
|
|
|
|
die_merge () {
|
|
if [ $(git config --bool --get advice.resolveConflict || echo true) = "true" ]; then
|
|
die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).
|
|
Please, commit your changes before you can merge.")"
|
|
else
|
|
die "$(gettext "You have not concluded your merge (MERGE_HEAD exists).")"
|
|
fi
|
|
}
|
|
|
|
test -z "$(git ls-files -u)" || die_conflict
|
|
test -f "$GIT_DIR/MERGE_HEAD" && die_merge
|
|
|
|
bool_or_string_config () {
|
|
git config --bool "$1" 2>/dev/null || git config "$1"
|
|
}
|
|
|
|
strategy_args= diffstat= no_commit= squash= no_ff= ff_only=
|
|
log_arg= verbosity= progress= recurse_submodules= verify_signatures=
|
|
merge_args= edit= rebase_args=
|
|
curr_branch=$(git symbolic-ref -q HEAD)
|
|
curr_branch_short="${curr_branch#refs/heads/}"
|
|
rebase=$(bool_or_string_config branch.$curr_branch_short.rebase)
|
|
if test -z "$rebase"
|
|
then
|
|
rebase=$(bool_or_string_config pull.rebase)
|
|
fi
|
|
|
|
# Setup default fast-forward options via `pull.ff`
|
|
pull_ff=$(git config pull.ff)
|
|
case "$pull_ff" in
|
|
false)
|
|
no_ff=--no-ff
|
|
;;
|
|
only)
|
|
ff_only=--ff-only
|
|
;;
|
|
esac
|
|
|
|
|
|
dry_run=
|
|
while :
|
|
do
|
|
case "$1" in
|
|
-q|--quiet)
|
|
verbosity="$verbosity -q" ;;
|
|
-v|--verbose)
|
|
verbosity="$verbosity -v" ;;
|
|
--progress)
|
|
progress=--progress ;;
|
|
--no-progress)
|
|
progress=--no-progress ;;
|
|
-n|--no-stat|--no-summary)
|
|
diffstat=--no-stat ;;
|
|
--stat|--summary)
|
|
diffstat=--stat ;;
|
|
--log|--no-log)
|
|
log_arg=$1 ;;
|
|
--no-c|--no-co|--no-com|--no-comm|--no-commi|--no-commit)
|
|
no_commit=--no-commit ;;
|
|
--c|--co|--com|--comm|--commi|--commit)
|
|
no_commit=--commit ;;
|
|
-e|--edit)
|
|
edit=--edit ;;
|
|
--no-edit)
|
|
edit=--no-edit ;;
|
|
--sq|--squ|--squa|--squas|--squash)
|
|
squash=--squash ;;
|
|
--no-sq|--no-squ|--no-squa|--no-squas|--no-squash)
|
|
squash=--no-squash ;;
|
|
--ff)
|
|
no_ff=--ff ;;
|
|
--no-ff)
|
|
no_ff=--no-ff ;;
|
|
--ff-only)
|
|
ff_only=--ff-only ;;
|
|
-s=*|--s=*|--st=*|--str=*|--stra=*|--strat=*|--strate=*|\
|
|
--strateg=*|--strategy=*|\
|
|
-s|--s|--st|--str|--stra|--strat|--strate|--strateg|--strategy)
|
|
case "$#,$1" in
|
|
*,*=*)
|
|
strategy=$(expr "z$1" : 'z-[^=]*=\(.*\)') ;;
|
|
1,*)
|
|
usage ;;
|
|
*)
|
|
strategy="$2"
|
|
shift ;;
|
|
esac
|
|
strategy_args="${strategy_args}-s $strategy "
|
|
;;
|
|
-X*)
|
|
case "$#,$1" in
|
|
1,-X)
|
|
usage ;;
|
|
*,-X)
|
|
xx="-X $(git rev-parse --sq-quote "$2")"
|
|
shift ;;
|
|
*,*)
|
|
xx=$(git rev-parse --sq-quote "$1") ;;
|
|
esac
|
|
merge_args="$merge_args$xx "
|
|
;;
|
|
-r=*|--r=*|--re=*|--reb=*|--reba=*|--rebas=*|--rebase=*)
|
|
rebase="${1#*=}"
|
|
;;
|
|
-r|--r|--re|--reb|--reba|--rebas|--rebase)
|
|
rebase=true
|
|
;;
|
|
--no-r|--no-re|--no-reb|--no-reba|--no-rebas|--no-rebase)
|
|
rebase=false
|
|
;;
|
|
--recurse-submodules)
|
|
recurse_submodules=--recurse-submodules
|
|
;;
|
|
--recurse-submodules=*)
|
|
recurse_submodules="$1"
|
|
;;
|
|
--no-recurse-submodules)
|
|
recurse_submodules=--no-recurse-submodules
|
|
;;
|
|
--verify-signatures)
|
|
verify_signatures=--verify-signatures
|
|
;;
|
|
--no-verify-signatures)
|
|
verify_signatures=--no-verify-signatures
|
|
;;
|
|
--gpg-sign|-S)
|
|
gpg_sign_args=-S
|
|
;;
|
|
--gpg-sign=*)
|
|
gpg_sign_args=$(git rev-parse --sq-quote "-S${1#--gpg-sign=}")
|
|
;;
|
|
-S*)
|
|
gpg_sign_args=$(git rev-parse --sq-quote "$1")
|
|
;;
|
|
--d|--dr|--dry|--dry-|--dry-r|--dry-ru|--dry-run)
|
|
dry_run=--dry-run
|
|
;;
|
|
-h|--help-all)
|
|
usage
|
|
;;
|
|
*)
|
|
# Pass thru anything that may be meant for fetch.
|
|
break
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
case "$rebase" in
|
|
preserve)
|
|
rebase=true
|
|
rebase_args=--preserve-merges
|
|
;;
|
|
true|false|'')
|
|
;;
|
|
*)
|
|
echo "Invalid value for --rebase, should be true, false, or preserve"
|
|
usage
|
|
exit 1
|
|
;;
|
|
esac
|
|
|
|
error_on_no_merge_candidates () {
|
|
exec >&2
|
|
for opt
|
|
do
|
|
case "$opt" in
|
|
-t|--t|--ta|--tag|--tags)
|
|
echo "It doesn't make sense to pull all tags; you probably meant:"
|
|
echo " git fetch --tags"
|
|
exit 1
|
|
esac
|
|
done
|
|
|
|
if test true = "$rebase"
|
|
then
|
|
op_type=rebase
|
|
op_prep=against
|
|
else
|
|
op_type=merge
|
|
op_prep=with
|
|
fi
|
|
|
|
upstream=$(git config "branch.$curr_branch_short.merge")
|
|
remote=$(git config "branch.$curr_branch_short.remote")
|
|
|
|
if [ $# -gt 1 ]; then
|
|
if [ "$rebase" = true ]; then
|
|
printf "There is no candidate for rebasing against "
|
|
else
|
|
printf "There are no candidates for merging "
|
|
fi
|
|
echo "among the refs that you just fetched."
|
|
echo "Generally this means that you provided a wildcard refspec which had no"
|
|
echo "matches on the remote end."
|
|
elif [ $# -gt 0 ] && [ "$1" != "$remote" ]; then
|
|
echo "You asked to pull from the remote '$1', but did not specify"
|
|
echo "a branch. Because this is not the default configured remote"
|
|
echo "for your current branch, you must specify a branch on the command line."
|
|
elif [ -z "$curr_branch" -o -z "$upstream" ]; then
|
|
. git-parse-remote
|
|
error_on_missing_default_upstream "pull" $op_type $op_prep \
|
|
"git pull <remote> <branch>"
|
|
else
|
|
echo "Your configuration specifies to $op_type $op_prep the ref '${upstream#refs/heads/}'"
|
|
echo "from the remote, but no such ref was fetched."
|
|
fi
|
|
exit 1
|
|
}
|
|
|
|
test true = "$rebase" && {
|
|
if ! git rev-parse -q --verify HEAD >/dev/null
|
|
then
|
|
# On an unborn branch
|
|
if test -f "$GIT_DIR/index"
|
|
then
|
|
die "$(gettext "updating an unborn branch with changes added to the index")"
|
|
fi
|
|
else
|
|
require_clean_work_tree "pull with rebase" "Please commit or stash them."
|
|
fi
|
|
oldremoteref= &&
|
|
test -n "$curr_branch" &&
|
|
. git-parse-remote &&
|
|
remoteref="$(get_remote_merge_branch "$@" 2>/dev/null)" &&
|
|
oldremoteref=$(git merge-base --fork-point "$remoteref" $curr_branch 2>/dev/null)
|
|
}
|
|
orig_head=$(git rev-parse -q --verify HEAD)
|
|
git fetch $verbosity $progress $dry_run $recurse_submodules --update-head-ok "$@" || exit 1
|
|
test -z "$dry_run" || exit 0
|
|
|
|
curr_head=$(git rev-parse -q --verify HEAD)
|
|
if test -n "$orig_head" && test "$curr_head" != "$orig_head"
|
|
then
|
|
# The fetch involved updating the current branch.
|
|
|
|
# The working tree and the index file is still based on the
|
|
# $orig_head commit, but we are merging into $curr_head.
|
|
# First update the working tree to match $curr_head.
|
|
|
|
eval_gettextln "Warning: fetch updated the current branch head.
|
|
Warning: fast-forwarding your working tree from
|
|
Warning: commit \$orig_head." >&2
|
|
git update-index -q --refresh
|
|
git read-tree -u -m "$orig_head" "$curr_head" ||
|
|
die "$(eval_gettext "Cannot fast-forward your working tree.
|
|
After making sure that you saved anything precious from
|
|
$ git diff \$orig_head
|
|
output, run
|
|
$ git reset --hard
|
|
to recover.")"
|
|
|
|
fi
|
|
|
|
merge_head=$(sed -e '/ not-for-merge /d' \
|
|
-e 's/ .*//' "$GIT_DIR"/FETCH_HEAD | \
|
|
tr '\012' ' ')
|
|
|
|
case "$merge_head" in
|
|
'')
|
|
error_on_no_merge_candidates "$@"
|
|
;;
|
|
?*' '?*)
|
|
if test -z "$orig_head"
|
|
then
|
|
die "$(gettext "Cannot merge multiple branches into empty head")"
|
|
fi
|
|
if test true = "$rebase"
|
|
then
|
|
die "$(gettext "Cannot rebase onto multiple branches")"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
# Pulling into unborn branch: a shorthand for branching off
|
|
# FETCH_HEAD, for lazy typers.
|
|
if test -z "$orig_head"
|
|
then
|
|
# Two-way merge: we claim the index is based on an empty tree,
|
|
# and try to fast-forward to HEAD. This ensures we will not
|
|
# lose index/worktree changes that the user already made on
|
|
# the unborn branch.
|
|
empty_tree=4b825dc642cb6eb9a060e54bf8d69288fbee4904
|
|
git read-tree -m -u $empty_tree $merge_head &&
|
|
git update-ref -m "initial pull" HEAD $merge_head "$curr_head"
|
|
exit
|
|
fi
|
|
|
|
if test true = "$rebase"
|
|
then
|
|
o=$(git show-branch --merge-base $curr_branch $merge_head $oldremoteref)
|
|
if test "$oldremoteref" = "$o"
|
|
then
|
|
unset oldremoteref
|
|
fi
|
|
fi
|
|
|
|
merge_name=$(git fmt-merge-msg $log_arg <"$GIT_DIR/FETCH_HEAD") || exit
|
|
case "$rebase" in
|
|
true)
|
|
eval="git-rebase $diffstat $strategy_args $merge_args $rebase_args $verbosity"
|
|
eval="$eval $gpg_sign_args"
|
|
eval="$eval --onto $merge_head ${oldremoteref:-$merge_head}"
|
|
;;
|
|
*)
|
|
eval="git-merge $diffstat $no_commit $verify_signatures $edit $squash $no_ff $ff_only"
|
|
eval="$eval $log_arg $strategy_args $merge_args $verbosity $progress"
|
|
eval="$eval $gpg_sign_args"
|
|
eval="$eval \"\$merge_name\" HEAD $merge_head"
|
|
;;
|
|
esac
|
|
eval "exec $eval"
|