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# $Id$
# vim:et:ft=sh:sts=2:sw=2
#
# git-flow -- A collection of Git extensions to provide high-level
# repository operations for Vincent Driessen's branching model.
#
# A blog post presenting this model is found at:
#    http://blog.avirtualhome.com/development-workflow-using-git/
#
# Feel free to contribute to this project at:
#    http://github.com/petervanderdoes/gitflow
#
# Authors:
# Copyright 2012-2019 Peter van der Does. All rights reserved.
#
# Original Author:
# Copyright 2010 Vincent Driessen. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
#    list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright notice,
#    this list of conditions and the following disclaimer in the documentation
#    and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
# LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
# ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

#
# Function used by finish command to actually finish the release branch
# Called when the base of the release is the $DEVELOP_BRANCH
#
_finish_from_develop() {
	local opts merge_branch commit keepmsg remotebranchdeleted localbranchdeleted compare_refs_result merge_result

	remotebranchdeleted=$FLAGS_FALSE
	localbranchdeleted=$FLAGS_FALSE

	# Update local branches with remote branches
	if flag fetch; then
		git_fetch_branch "$ORIGIN" "$MASTER_BRANCH"
		git_fetch_branch "$ORIGIN" "$DEVELOP_BRANCH"
	fi

	# Check if the local branches have all the commits from the remote branches
	if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
		require_branches_equal "$BRANCH" "$ORIGIN/$BRANCH"
	fi
	if git_remote_branch_exists "$ORIGIN/$MASTER_BRANCH"; then
		if flag ff_master; then
			git_compare_refs "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
			compare_refs_result=$?

			if [ $compare_refs_result -gt 0 ]; then
				warn "Branches '"$MASTER_BRANCH"' and '"$ORIGIN/$MASTER_BRANCH"' have diverged."
				if [ $compare_refs_result -eq 1 ]; then
					warn "Fast forwarding '"$MASTER_BRANCH"'."
					git_do checkout "$MASTER_BRANCH" || die "Could not check out branch '$MASTER_BRANCH'."
					git_do merge  --ff-only "$ORIGIN/$MASTER_BRANCH" >/dev/null 2>&1
					merge_result=$?
					git_do checkout "$BRANCH"
					if [ $merge_result -gt 0 ]; then
						die "'"$MASTER_BRANCH"' can not be fast forwarded."
					fi
				elif [ $compare_refs_result -eq 2 ]; then
					# Warn here, since there is no harm in being ahead
					warn "And local branch '$1' is ahead of '$2'."
				else
					die "Branches need merging first."
				fi
			fi
		else
			require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
		fi
	fi
	if git_remote_branch_exists "$ORIGIN/$DEVELOP_BRANCH"; then
		require_branches_equal "$DEVELOP_BRANCH" "$ORIGIN/$DEVELOP_BRANCH"
	fi

	if noflag notag; then
		# We ask for a tag, be sure it does not exists or
		# points to the latest hotfix commit
		if git_tag_exists "$VERSION_PREFIX$TAGNAME"; then
			git_compare_refs  "$BRANCH" "$VERSION_PREFIX$TAGNAME"^2 2>/dev/null
			[ $? -eq 0 ] || die "Tag already exists and does not point to release branch '$BRANCH'"
		fi
	fi

	run_pre_hook "$VERSION_PREFIX$TAGNAME" "$ORIGIN" "$BRANCH"

	# Try to merge into master.
	# In case a previous attempt to finish this release branch has failed,
	# but the merge into master was successful, we skip it now
	if ! git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH"; then
			git_do checkout "$MASTER_BRANCH" || die "Could not check out branch '$MASTER_BRANCH'."
			if noflag squash; then
				git_do merge --no-ff "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
			else
				git_do merge --squash "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
				flag squash_info && gitflow_create_squash_message "Merged release branch '$BRANCH'" "$MASTER_BRANCH" "$BRANCH" > "$DOT_GIT_DIR/SQUASH_MSG"
				git_do commit
			fi
	fi

	if noflag notag; then
		# Try to tag the release.
		# In case a previous attempt to finish this release branch has failed,
		# but the tag was set successful, we skip it now
		if ! git_tag_exists "$VERSION_PREFIX$TAGNAME"; then
			git_do checkout "$MASTER_BRANCH" || die "Could not check out branch '$MASTER_BRANCH'."
			if [ "$FLAGS_message" != "" ] && [ "$FLAGS_messagefile" != "" ]; then
				die "Use either -m,--message or -f,--messagefile. Can not use both options at the same time"
			fi
			opts="-a"
			flag sign && opts="$opts -s"
			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
			if [ "$FLAGS_message" != "" ]; then
				# Run filter on the tag message
				FLAGS_message=$(run_filter_hook release-finish-tag-message "${FLAGS_message}" "$VERSION_PREFIX$TAGNAME")
				opts="$opts -m '$FLAGS_message'"
			fi
			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
			eval git_do tag $opts "$VERSION_PREFIX$TAGNAME" || die "Tagging failed. Please run finish again to retry."
		fi
	fi

	# By default we backmerge the $MASTER_BRANCH unless the user explicitly
	# stated not to do a back merge, in that case we use the $BRANCH.
	if noflag nobackmerge; then
		merge_branch="$MASTER_BRANCH"
	else
		merge_branch="$BRANCH"
	fi

	# Try to merge into develop unless 'nodevelopmerge' has been specified.
	# In case a previous attempt to finish this release branch has failed,
	# but the merge into develop was successful, we skip it now
	if noflag nodevelopmerge; then
		if ! git_is_branch_merged_into "$merge_branch" "$DEVELOP_BRANCH"; then
			git_do checkout "$DEVELOP_BRANCH" || die "Could not check out branch '$DEVELOP_BRANCH'."

			if noflag nobackmerge; then
				# Accounting for 'git describe', if a release is tagged
				# we use the tag commit instead of the branch.
				if noflag notag; then
					commit="$VERSION_PREFIX$TAGNAME"
				else
					commit="$MASTER_BRANCH"
				fi
				git_do merge --no-ff "$commit" || die "There were merge conflicts." # TODO: What do we do now?
			else
				commit="$BRANCH"
				if noflag squash; then
					git_do merge --no-ff "$commit" || die "There were merge conflicts." # TODO: What do we do now?
				else
					git_do merge --squash "$commit" || die "There were merge conflicts." # TODO: What do we do now?
					flag squash_info && gitflow_create_squash_message "Merged release branch '$BRANCH'" "$DEVELOP_BRANCH" "$BRANCH" > "$DOT_GIT_DIR/SQUASH_MSG"
					git_do commit
				fi
			fi
		fi
	fi

	run_post_hook "$VERSION_PREFIX$TAGNAME" "$ORIGIN" "$BRANCH"

	if flag push; then
		if flag pushdevelop; then
			git_do push "$ORIGIN" "$DEVELOP_BRANCH" || die "Could not push branch '$DEVELOP_BRANCH' to remote '$ORIGIN'."
		fi
		if flag pushproduction; then
			git_do push "$ORIGIN" "$MASTER_BRANCH" || die "Could not push branch '$MASTER_BRANCH' to remote '$ORIGIN'."
		fi
		if noflag notag && flag pushtag; then
			git_do push --tags "$ORIGIN" || die "Could not push tags to remote '$ORIGIN'."
		fi
	fi

	# Delete branch
	if noflag keep; then

		if [ "$BRANCH" = "$(git_current_branch)" ]; then
			git_do checkout "$MASTER_BRANCH" || die "Could not check out branch '$MASTER_BRANCH'."
		fi

		# Always delete remote first
		if noflag keepremote;then
			if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
				git_remote_branch_delete "$BRANCH" && remotebranchdeleted=$FLAGS_TRUE
			fi
		fi

		# Delete local after remote to avoid warnings
		if noflag keeplocal; then
			if flag force_delete; then
				git_do branch -D "$BRANCH" && localbranchdeleted=$FLAGS_TRUE
			else
				if noflag squash; then
					git_do branch -d "$BRANCH" && localbranchdeleted=$FLAGS_TRUE
				else
					git_do branch -D "$BRANCH" && localbranchdeleted=$FLAGS_TRUE
				fi
			fi
		fi

		# no more branches: we can safely remove config section
		if ! git_remote_branch_exists "$ORIGIN/$BRANCH" -a ! git_local_branch_exists "$BRANCH"; then
			gitflow_config_remove_base_section "$BRANCH"
		fi
	fi

	echo
	echo "Summary of actions:"
	if flag fetch; then
		echo "- Latest objects have been fetched from '$ORIGIN'"
	fi
	echo "- Release branch '$BRANCH' has been merged into '$MASTER_BRANCH'"
	if noflag notag; then
		echo "- The release was tagged '$VERSION_PREFIX$TAGNAME'"
	fi
	[ "$commit" = "$MASTER_BRANCH" ] && echo "- Master branch '$MASTER_BRANCH' has been back-merged into '$DEVELOP_BRANCH'"
	[ "$commit" = "$VERSION_PREFIX$TAGNAME" ] && echo "- Release tag '$VERSION_PREFIX$TAGNAME' has been back-merged into '$DEVELOP_BRANCH'"
	[ "$commit" = "$BRANCH" ] && echo "- Release branch '$BRANCH' has been merged into '$DEVELOP_BRANCH'"

	if noflag keep; then
		if [ $localbranchdeleted -eq $FLAGS_TRUE ]; then
			keepmsg="has been locally deleted"
		else
			keepmsg="is still locally available"
		fi
		if [ $remotebranchdeleted -eq $FLAGS_TRUE ]; then
			keepmsg=$keepmsg"; it has been remotely deleted from '$ORIGIN'"
		elif git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			keepmsg=$keepmsg"; it is still remotely available on '$ORIGIN'"
		fi
	else
		keepmsg="is still locally available"
		if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			keepmsg=$keepmsg"; it is still remotely available on '$ORIGIN'"
		fi
	fi
	echo "- Release branch '$BRANCH' "$keepmsg

	if flag push; then
		echo "- '$DEVELOP_BRANCH', '$MASTER_BRANCH' and tags have been pushed to '$ORIGIN'"
	fi
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}

#
# Function used by finish command to actually finish the release branch
# Called when the base of the release is NOT the $DEVELOP_BRANCH
#

_finish_base() {
	local opts merge_branch commit keepmsg localbranchdeleted remotebranchdeleted

	remotebranchdeleted=$FLAGS_FALSE
	localbranchdeleted=$FLAGS_FALSE

	# Update local branches with remote branches
	if flag fetch; then
		git_fetch_branch "$ORIGIN" "$BASE_BRANCH"
	fi

	# Check if the local branches have all the commits from the remote branches
	if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
		require_branches_equal "$BRANCH" "$ORIGIN/$BRANCH"
	fi
	if git_remote_branch_exists "$ORIGIN/$BASE_BRANCH"; then
		require_branches_equal "$BASE_BRANCH" "$ORIGIN/$BASE_BRANCH"
	fi

	if noflag notag; then
		# We ask for a tag, be sure it does not exists or
		# points to the latest hotfix commit
		if git_tag_exists "$VERSION_PREFIX$TAGNAME"; then
			git_compare_refs  "$BRANCH" "$VERSION_PREFIX$TAGNAME"^2 2>/dev/null
			[ $? -eq 0 ] || die "Tag already exists and does not point to release branch '$BRANCH'"
		fi
	fi

	run_pre_hook "$VERSION_PREFIX$TAGNAME" "$ORIGIN" "$BRANCH"

	# Try to merge into base branch.
	# In case a previous attempt to finish this release branch has failed,
	# but the merge into develop was successful, we skip it now
	if ! git_is_branch_merged_into "$BRANCH" "$BASE_BRANCH"; then
		git_do checkout "$BASE_BRANCH" || die "Could not check out branch '$BASE_BRANCH'."
		if noflag squash; then
			git_do merge --no-ff "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
		else
			git_do merge --squash "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
			flag squash_info && gitflow_create_squash_message "Merged release branch '$BRANCH'" "$BASE_BRANCH" "$BRANCH" > "$DOT_GIT_DIR/SQUASH_MSG"
			git_do commit
		fi
	fi

	if noflag notag; then
		# Try to tag the release.
		# In case a previous attempt to finish this release branch has failed,
		# but the tag was set successful, we skip it now
		if ! git_tag_exists "$VERSION_PREFIX$TAGNAME"; then
			git_do checkout "$BASE_BRANCH" || die "Could not check out branch '$BASE_BRANCH'."
			if [ "$FLAGS_message" != "" ] && [ "$FLAGS_messagefile" != "" ]; then
				die "Use either -m,--message or -f,--messagefile. Can not use both options at the same time"
			fi
			opts="-a"
			flag sign && opts="$opts -s"
			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
			if [ "$FLAGS_message" != "" ]; then
				# Run filter on the tag message
				FLAGS_message=$(run_filter_hook release-finish-tag-message "${FLAGS_message}" "$VERSION_PREFIX$TAGNAME")
				opts="$opts -m '$FLAGS_message'"
			fi
			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
			eval git_do tag $opts "$VERSION_PREFIX$TAGNAME" || die "Tagging failed. Please run finish again to retry."
		fi
	fi

	run_post_hook "$VERSION_PREFIX$TAGNAME" "$ORIGIN" "$BRANCH"

	# Delete branch
	if noflag keep; then

		# Always delete remote first
		if noflag keepremote;then
			if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
				git_remote_branch_delete "$BRANCH" && remotebranchdeleted=$FLAGS_TRUE
			fi
		fi

		# Delete local after remote to avoid warnings
		if noflag keeplocal; then
			if [ "$BRANCH" = "$(git_current_branch)" ]; then
				git_do checkout "$BASE_BRANCH" || die "Could not check out branch '$BASE_BRANCH'."
			fi
			if flag force_delete; then
				git_do branch -D "$BRANCH" && localbranchdeleted=$FLAGS_TRUE
			else
				git_do branch -d "$BRANCH" && localbranchdeleted=$FLAGS_TRUE
			fi
		fi

		# no more branches: we can safely remove config section
		if ! git_remote_branch_exists "$ORIGIN/$BRANCH" -a ! git_local_branch_exists "$BRANCH"; then
			gitflow_config_remove_base_section "$BRANCH"
		fi
	fi

	if flag push; then
		if flag pushdevelop; then
			git_do push "$ORIGIN" "$BASE_BRANCH" || die "Could not push branch '$BASE_BRANCH' to remote '$ORIGIN'."
		fi
		if noflag notag && flag pushtag; then
			git_do push --tags "$ORIGIN" || die "Could not push tags to remote '$ORIGIN'."
		fi
	fi

	echo
	echo "Summary of actions:"
	if flag fetch; then
		echo "- Latest objects have been fetched from '$ORIGIN'"
	fi
	if noflag notag; then
		echo "- The release was tagged '$VERSION_PREFIX$TAGNAME'"
	fi
	[ "$commit" = "$VERSION_PREFIX$TAGNAME" ] && echo "- Release tag '$VERSION_PREFIX$TAGNAME' has been merged into '$BASE_BRANCH'"
	[ "$commit" = "$BRANCH" ] && echo "- Release branch '$BRANCH' has been merged into '$BASE_BRANCH'"
	if noflag keep; then
		if [ $localbranchdeleted -eq $FLAGS_TRUE ]; then
			keepmsg="has been locally deleted"
		else
			keepmsg="is still locally available"
		fi
		if [ $remotebranchdeleted -eq $FLAGS_TRUE ]; then
			keepmsg=$keepmsg"; it has been remotely deleted from '$ORIGIN'"
		elif git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			keepmsg=$keepmsg"; it is still remotely available on '$ORIGIN'"
		fi
	else
		keepmsg="is still locally available"
		if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			keepmsg=$keepmsg"; it is still remotely available on '$ORIGIN'"
		fi
	fi
	echo "- Release branch '$BRANCH' "$keepmsg

	if flag push; then
		echo "- '$BASE_BRANCH' and tags have been pushed to '$ORIGIN'"
	fi
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}
initialize() {
	require_git_repo
	require_gitflow_initialized
	git config --get gitflow.prefix.release >/dev/null 2>&1 || die "Release prefix not set. Please run 'git flow init'."
	gitflow_load_settings
	VERSION_PREFIX=$(git config --get gitflow.prefix.versiontag)
	PREFIX=$(git config --get gitflow.prefix.release)
}

usage() {
		OPTIONS_SPEC="\
git flow release [list]
git flow release start
git flow release finish
git flow release publish
git flow release track
git flow release delete

Manage your release branches.

For more specific help type the command followed by --help
--
"
	flags_help
}

cmd_default() {
	cmd_list "$@"
}

cmd_list() {
		OPTIONS_SPEC="\
git flow release [list] [-h] [-v]

List existing release branches
--
h,help!           Show this help
v,verbose!        verbose (more) output
"
	local release_branches current_branch
	local width branch len
	local base develop_sha branch_sha nicename

	# cmd_default may already define flags
	# at this stage we can not use parse_args
	if [ -z "${FLAGS_verbose}" ]; then
		DEFINE_boolean 'verbose' false 'verbose (more) output' v
	fi

	# Parse arguments
	parse_args "$@"

	release_branches=$(git_local_branches_prefixed "$PREFIX")
	if [ -z "$release_branches" ]; then
		warn "No release branches exist."
		warn ""
		warn "You can start a new release branch:"
		warn ""
		warn "    git flow release start <name> [<base>]"
		warn ""
		exit 0
	fi

	current_branch=$(git_current_branch)

	# Determine column width first
	width=0
	for branch in $release_branches; do
		len=${#branch}
		width=$(max $width $len)
	done
	width=$(($width+3-${#PREFIX}))

	for branch in $release_branches; do
		base=$(git merge-base "$branch" "$DEVELOP_BRANCH")
		develop_sha=$(git rev-parse "$DEVELOP_BRANCH")
		branch_sha=$(git rev-parse "$branch")
		if [ "$branch" = "$current_branch" ]; then
			printf "* "
		else
			printf "  "
		fi
		if flag verbose; then
			printf "%-${width}s" "${branch#$PREFIX}"
			if [ "$branch_sha" = "$develop_sha" ]; then
				printf "(no commits yet)"
			else
				nicename=$(git rev-parse --short "$base")
				printf "(based on $nicename)"
			fi
		else
			printf "%s" "${branch#$PREFIX}"
		fi
		echo
	done
}

cmd_help() {
	usage
	exit 0
}

# Parse arguments and set common variables
parse_args() {
	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	# Read arguments into global variables
	if [ -z $1 ]; then
		VERSION=''
	else
		VERSION=$1
	fi
	BRANCH=$PREFIX$VERSION
}

require_no_existing_release_branches() {
	local release_branches first_branch

	release_branches=$(git_local_branches_prefixed "$PREFIX")
	first_branch=$(echo ${release_branches} | head -n1)

	first_branch=${first_branch#$PREFIX}
	[ -z "$release_branches" ] || die "There is an existing release branch '$first_branch'. Finish that one first."
}

cmd_start() {
	OPTIONS_SPEC="\
git flow release start [options] <version> [<base>]

Start a new release branch
--
h,help!              Show this help
showcommands!        Show git commands while executing them
F,[no]fetch          Fetch from $ORIGIN before performing finish
v,verbose!           Verbose (more) output
"
	local base

	# Define flags
	DEFINE_boolean 'fetch' false "fetch from $ORIGIN before performing finish" F

	# Override defaults with values from config
	gitflow_override_flag_boolean   "release.start.fetch"   "fetch"

	# Parse arguments
	parse_args "$@"
	eval set -- "${FLAGS_ARGV}"
	base=${2:-$DEVELOP_BRANCH}

	# Run filter on the version
	VERSION=$(run_filter_hook release-start-version $VERSION)
	if [ $? -eq 127 ]; then
		die $VERSION
	fi

	# As VERSION might have changed reset BRANCH with new VERSION
	BRANCH=$PREFIX$VERSION

	require_base_is_local_branch "$base"
	gitflow_require_version_arg

	require_no_existing_release_branches

	# Sanity checks
	git_config_bool_exists "gitflow.allowdirty" || require_clean_working_tree
	require_branch_absent "$BRANCH"
	require_tag_absent "$VERSION_PREFIX$VERSION"
	if flag fetch; then
		git_fetch_branch "$ORIGIN" "$base"
	fi
	if git_remote_branch_exists "$ORIGIN/$base"; then
		require_branches_equal "$base" "$ORIGIN/$base"
	fi

	run_pre_hook "$VERSION_PREFIX$VERSION" "$ORIGIN" "$BRANCH" "$base"

	gitflow_config_set_base_branch $base $BRANCH

	# Create branch
	git_do checkout -b "$BRANCH" "$base" || die "Could not create release branch '$BRANCH'."

	run_post_hook "$VERSION_PREFIX$VERSION" "$ORIGIN" "$BRANCH" "$base"

	echo
	echo "Summary of actions:"
	echo "- A new branch '$BRANCH' was created, based on '$base'"
	echo "- You are now on branch '$(git_current_branch)'"
	echo
	echo "Follow-up actions:"
	echo "- Bump the version number now!"
	echo "- Start committing last-minute fixes in preparing your release"
	echo "- When done, run:"
	echo
	echo "     git flow release finish '$VERSION'"
	echo
}

cmd_finish() {
	OPTIONS_SPEC="\
git flow release finish [-h] [-F] [-s] [-u] [-m | -f] [-p] [-k] [-n] [-b] [-S] <version>


Finish a release branch
--
h,help              Show this help
showcommands!       Show git commands while executing them
F,[no]fetch         Fetch from origin before performing finish
s,sign!             Sign the release tag cryptographically
u,signingkey!       Use the given GPG-key for the digital signature (implies -s)
m,message!          Use the given tag message
f,[no]messagefile=  Use the contents of the given file as a tag message
p,[no]push          Push to origin after performing finish
[no]pushproduction  Push the production branch
[no]pushdevelop     Push the develop branch
[no]pushtag         Push the tag
k,[no]keep          Keep branch after performing finish
[no]keepremote      Keep the remote branch
[no]keeplocal       Keep the local branch
D,[no]force_delete  Force delete release branch after finish
n,[no]tag           Don't tag this release
b,[no]nobackmerge   Don't back-merge master, or tag if applicable, in develop
S,[no]squash        Squash release during merge
[no]ff-master       Fast forward master branch if possible
T,tagname!          Use given tag name
nodevelopmerge!  Don't back-merge develop branch
"
	# Define flags
	DEFINE_boolean 'fetch' false "fetch from $ORIGIN before performing finish" F
	DEFINE_boolean 'sign' false "sign the release tag cryptographically" s
	DEFINE_string  'signingkey' "" "use the given GPG-key for the digital signature (implies -s)" u
	DEFINE_string  'message' "" "use the given tag message" m
	DEFINE_string  'messagefile' "" "use the contents of the given file as a tag message" f
	DEFINE_boolean 'push' false "push to $ORIGIN after performing finish" p
	DEFINE_boolean 'pushproduction' false "push the production branch"
	DEFINE_boolean 'pushdevelop' false "push the develop branch"
	DEFINE_boolean 'pushtag' false "push the tag"
	DEFINE_boolean 'keep' false "keep branch after performing finish" k
	DEFINE_boolean 'keepremote' false "keep the remote branch"
	DEFINE_boolean 'keeplocal' false "keep the local branch"
	DEFINE_boolean 'force_delete' false "force delete release branch after finish" D
	DEFINE_boolean 'notag' false "don't tag this release" n
	DEFINE_boolean 'nobackmerge' false "don't back-merge $MASTER_BRANCH, or tag if applicable, in $DEVELOP_BRANCH " b
	DEFINE_boolean 'squash' false "squash release during merge" S
	DEFINE_boolean 'squash-info' false "add branch info during squash"
	DEFINE_boolean 'ff-master' false "fast forward master branch if possible"
	DEFINE_string  'tagname' "" "use the given tag name" T
	DEFINE_boolean 'nodevelopmerge' false "don't merge $BRANCH into $DEVELOP_BRANCH "

	# Override defaults with values from config
	gitflow_override_flag_boolean   "release.finish.fetch"          "fetch"
	gitflow_override_flag_boolean   "release.finish.sign"           "sign"
	gitflow_override_flag_boolean   "release.finish.push"           "push"
	gitflow_override_flag_boolean   "release.finish.pushproduction" "pushproduction"
	gitflow_override_flag_boolean   "release.finish.pushdevelop"    "pushdevelop"
	gitflow_override_flag_boolean   "release.finish.pushtag"        "pushtag"
	gitflow_override_flag_boolean   "release.finish.keep"           "keep"
	gitflow_override_flag_boolean   "release.finish.keepremote"     "keepremote"
	gitflow_override_flag_boolean   "release.finish.keeplocal"      "keeplocal"
	gitflow_override_flag_boolean   "release.finish.force-delete"   "force_delete"
	gitflow_override_flag_boolean   "release.finish.notag"          "notag"
	gitflow_override_flag_boolean   "release.finish.nobackmerge"    "nobackmerge"
	gitflow_override_flag_boolean   "release.finish.squash"         "squash"
	gitflow_override_flag_boolean   "release.finish.squash-info"    "squash_info"
	gitflow_override_flag_boolean   "release.finish.ff-master"      "ff-master"
	gitflow_override_flag_string    "release.finish.signingkey"     "signingkey"
	gitflow_override_flag_string    "release.finish.message"        "message"
	gitflow_override_flag_string    "release.finish.messagefile"    "messagefile"
	gitflow_override_flag_boolean   "release.finish.nodevelopmerge" "nodevelopmerge"

	# Parse arguments
	parse_args "$@"

	# Use current branch if no version is given
	if [ "$VERSION" = "" ]; then
		gitflow_use_current_branch_version
	fi


	# Run filter on the version
	VERSION=$(run_filter_hook release-finish-version $VERSION)
	if [ $? -eq 127 ]; then
		die $VERSION
	fi

	# Use branch name if no tag name is given
	if [ "$FLAGS_tagname" != "" ]; then
		TAGNAME=$FLAGS_tagname
	else
		TAGNAME=$VERSION
	fi

	# As VERSION might have changed reset BRANCH with new VERSION
	BRANCH=$PREFIX$VERSION

	BASE_BRANCH=$(gitflow_config_get_base_branch $BRANCH)
	BASE_BRANCH=${BASE_BRANCH:-$DEVELOP_BRANCH}
	git_local_branch_exists "$BASE_BRANCH" || die "The base '$BASE_BRANCH' doesn't exists locally or is not a branch. Can't finish the release branch '$BRANCH'."

	# Handle flags that imply other flags
	if [ "$FLAGS_signingkey" != "" ]; then
		FLAGS_sign=$FLAGS_TRUE
	fi

	# Keeping both branches implies the --keep flag to be true.
	if flag keepremote && flag keeplocal; then
		FLAGS_keep=$FLAGS_TRUE
	fi

	# Pushing implies we push all.
	if flag push; then
		FLAGS_pushproduction=$FLAGS_TRUE
		FLAGS_pushdevelop=$FLAGS_TRUE
		FLAGS_pushtag=$FLAGS_TRUE
	fi
	# If we push either of these it means we need to do a push
	if flag pushproduction || flag pushdevelop || flag pushtag; then
		FLAGS_push=$FLAGS_TRUE
	fi

	# Sanity checks
	require_branch "$BRANCH"
	require_clean_working_tree

	# We always fetch the Branch from Origin
	# This is done to avoid possible commits on the remote that are not
	# merged into the local branch
	if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			git_fetch_branch "$ORIGIN" "$BRANCH"
	fi

	if [ "$BASE_BRANCH" = "$DEVELOP_BRANCH" ]; then
		_finish_from_develop
	else
		_finish_base
	fi
}

cmd_branch() {
	OPTIONS_SPEC="\
git flow release branch [-h] [-F] [-s] [-u] [-m] [-f] [-p] [-n] [-S] <version> [<name>]


Release a branch [<name>], if a name is not given it defaults to the develop branch, and use the given version <version>
--
h,help              Show this help
showcommands!       Show git commands while executing them
F,[no]fetch 		Fetch from origin before performing finish
s,sign!             Sign the release tag cryptographically
u,signingkey!    	Use the given GPG-key for the digital signature (implies -s)
m,message! 	    	Use the given tag message
f,[no]messagefile= 	Use the contents of the given file as a tag message
p,[no]push 			Push to origin after performing finish
n,[no]tag 			Don't tag this release
S,[no]squash 		Squash release during merge
"
	local opts

	# Define flags
	DEFINE_boolean 'fetch' false "fetch from $ORIGIN before performing finish" F
	DEFINE_boolean 'sign' false "sign the release tag cryptographically" s
	DEFINE_string 'signingkey' "" "use the given GPG-key for the digital signature (implies -s)" u
	DEFINE_string 'message' "" "use the given tag message" m
	DEFINE_string 'messagefile' "" "use the contents of the given file as a tag message" f
	DEFINE_boolean 'push' false "push to $ORIGIN after performing finish" p
	DEFINE_boolean 'notag' false "don't tag this release" n
	DEFINE_boolean 'squash' false "squash release during merge" S
	DEFINE_boolean 'squash-info' false "add branch info during squash"

	# Override defaults with values from config
	gitflow_override_flag_boolean   "release.branch.fetch"         "fetch"
	gitflow_override_flag_boolean   "release.branch.sign"          "sign"
	gitflow_override_flag_boolean   "release.branch.push"          "push"
	gitflow_override_flag_boolean   "release.branch.notag"         "notag"
	gitflow_override_flag_boolean   "release.branch.squash"        "squash"
	gitflow_override_flag_boolean   "release.branch.squash-info"   "squash_info"
	gitflow_override_flag_string    "release.branch.signingkey"    "signingkey"
	gitflow_override_flag_string    "release.branch.message"       "message"
	gitflow_override_flag_string    "release.branch.messagefile"   "messagefile"

	# Parse arguments
	FLAGS "$@" || exit $?
	eval set -- "${FLAGS_ARGV}"

	# Read arguments into global variables
	VERSION=$1
	BRANCH=${2:-$DEVELOP_BRANCH}

	# Run filter on the version
	VERSION=$(run_filter_hook branch-finish-version $VERSION)
	if [ $? -eq 127 ]; then
		die $VERSION
	fi

	gitflow_require_version_arg

	# Handle flags that imply other flags
	if [ "$FLAGS_signingkey" != "" ]; then
		FLAGS_sign=$FLAGS_TRUE
	fi

	# Sanity checks
	if gitflow_is_prefixed_branch "$BRANCH"; then
		die "Branch '$BRANCH' seems to be a git-flow branch. It's not allowed to release this directly."
	fi

	if [ "$BRANCH" = "$MASTER_BRANCH" ]; then
		die "Can not release from the the master branch"
	fi

	require_branch "$BRANCH"
	require_clean_working_tree

	# We always fetch the Branch from Origin
	# This is done to avoid possible commits on the remote that are not
	# merged into the local branch
	if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
			git_fetch_branch "$ORIGIN" "$BRANCH"
	fi

	# Update local branches with remote branches
	if flag fetch; then
		git_fetch_branch "$ORIGIN" "$MASTER_BRANCH"
	fi

	# Check if the local branches have all the commits from the remote branches
	if git_remote_branch_exists "$ORIGIN/$BRANCH"; then
		require_branches_equal "$BRANCH" "$ORIGIN/$BRANCH"
	fi
	if git_remote_branch_exists "$ORIGIN/$MASTER_BRANCH"; then
		require_branches_equal "$MASTER_BRANCH" "$ORIGIN/$MASTER_BRANCH"
	fi

	run_pre_hook "$VERSION_PREFIX$VERSION" "$ORIGIN" "$BRANCH"

	# Try to merge into master.
	# In case a previous attempt to finish this release branch has failed,
	# but the merge into master was successful, we skip it now
	if ! git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH"; then
			git_do checkout "$MASTER_BRANCH" || die "Could not check out branch '$MASTER_BRANCH'."
			if noflag squash; then
				git_do merge --no-ff "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
			else
				git_do merge --squash "$BRANCH" || die "There were merge conflicts." # TODO: What do we do now?
				flag squash_info && gitflow_create_squash_message "Merged release branch '$BRANCH'" "$MASTER_BRANCH" "$BRANCH" > "$DOT_GIT_DIR/SQUASH_MSG"
				git_do commit
			fi
	fi

	if noflag notag; then
		# Try to tag the release.
		# In case a previous attempt to finish this release branch has failed,
		# but the tag was set successful, we skip it now
		if ! git_tag_exists "$VERSION_PREFIX$VERSION"; then
			if [ "$FLAGS_message" != "" ] && [ "$FLAGS_messagefile" != "" ]; then
				die "Use either -m,--message or -f,--messagefile. Can not use both options at the same time"
			fi
			opts="-a"
			flag sign && opts="$opts -s"
			[ "$FLAGS_signingkey" != "" ] && opts="$opts -u '$FLAGS_signingkey'"
			if [ "$FLAGS_message" != "" ]; then
				# Run filter on the tag message
				FLAGS_message=$(run_filter_hook release-branch-tag-message "${FLAGS_message}" "$VERSION_PREFIX$VERSION")
				opts="$opts -m '$FLAGS_message'"
			fi
			[ "$FLAGS_messagefile" != "" ] && opts="$opts -F '$FLAGS_messagefile'"
			eval git_do tag $opts "$VERSION_PREFIX$VERSION" || die "Tagging failed. Please run finish again to retry."
		fi
	fi

	run_post_hook "$VERSION_PREFIX$VERSION" "$ORIGIN" "$BRANCH"

	if flag push; then
		git_do push "$ORIGIN" "$MASTER_BRANCH" || die "Could not push branch '$MASTER_BRANCH' to remote '$ORIGIN'."
		if noflag notag; then
			git_do push --tags "$ORIGIN" || die "Could not push tags to remote '$ORIGIN'."
		fi
	fi

	echo
	echo "Summary of actions:"
	if flag fetch; then
		echo "- Latest objects have been fetched from '$ORIGIN'"
	fi
	echo "- Branch '$BRANCH' has been merged into '$MASTER_BRANCH'"
	if noflag notag; then
		echo "- The release was tagged '$VERSION_PREFIX$VERSION'"
	fi

	if flag push; then
		echo "- '$MASTER_BRANCH' and tags have been pushed to '$ORIGIN'"
	fi
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}

cmd_publish() {
	OPTIONS_SPEC="\
git flow release publish [-h] <name>

Publish the release branch <name> on $ORIGIN
--
h,help           Show this help
showcommands!    Show git commands while executing them
"
	# Parse arguments
	parse_args "$@"

	# Use current branch if no version is given
	if [ "$VERSION" = "" ]; then
		gitflow_use_current_branch_version
	fi

	# Sanity checks
	require_clean_working_tree
	require_branch "$BRANCH"
	git_do fetch -q "$ORIGIN" || die "Could not fetch branch '$BRANCH' from remote '$ORIGIN'."
	require_branch_absent "$ORIGIN/$BRANCH"

	run_pre_hook "$VERSION" "$ORIGIN" "$BRANCH"

	# Create remote branch with remote tracking
	git_do push -u "$ORIGIN" "$BRANCH:$BRANCH"
	git_do fetch -q "$ORIGIN" "$BRANCH" || die "Could not fetch branch '$BRANCH' from remote '$ORIGIN'."
	git_do checkout "$BRANCH" || die "Could not check out branch '$BRANCH'."

	run_post_hook "$VERSION" "$ORIGIN" "$BRANCH"

	echo
	echo "Summary of actions:"
	echo "- The remote branch '$BRANCH' was created or updated"
	echo "- The local branch '$BRANCH' was configured to track the remote branch"
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}

cmd_track() {
	OPTIONS_SPEC="\
git flow release track [-h] <name>

Start tracking release <name> that is shared on $ORIGIN
--
h,help           Show this help
showcommands!    Show git commands while executing them
"
	# Parse arguments
	parse_args "$@"

	gitflow_require_version_arg

	# Sanity checks
	require_clean_working_tree
	require_local_branch_absent "$BRANCH"

	run_pre_hook "$VERSION" "$ORIGIN" "$BRANCH"

	git_do fetch -q "$ORIGIN"  || die "Could not fetch branch '$BRANCH' from remote '$ORIGIN'."
	git_remote_branch_exists "$ORIGIN/$BRANCH"

	# Create tracking branch
	git_do checkout -b "$BRANCH" "$ORIGIN/$BRANCH" || die "Could not create branch '$BRANCH'."

	run_post_hook "$VERSION" "$ORIGIN" "$BRANCH"

	echo
	echo "Summary of actions:"
	echo "- A new remote tracking branch '$BRANCH' was created"
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}

cmd_rebase() {
	OPTIONS_SPEC="\
git flow release rebase [-h] [-i] [-p] [<name|nameprefix>]

Rebase <name> on <base_branch>
--
h,help!                Show this help
showcommands!          Show git commands while executing them
i,[no]interactive      Do an interactive rebase
p,[no]preserve-merges  Preserve merges
"
	local opts

	# Define flags
	DEFINE_boolean 'interactive' false 'do an interactive rebase' i
	DEFINE_boolean 'preserve-merges' false 'try to recreate merges' p

	# Override defaults with values from config
	gitflow_override_flag_boolean   "release.rebase.interactive"       "interactive"
	gitflow_override_flag_boolean   "release.rebase.preserve-merges"   "preserve_merges"

	# Parse arguments
	parse_args "$@"

	# Use current branch if no version is given
	if [ "$VERSION" = "" ]; then
		gitflow_use_current_branch_version
	fi

	BASE_BRANCH=$(gitflow_config_get_base_branch $BRANCH)
	BASE_BRANCH=${BASE_BRANCH:-$DEVELOP_BRANCH}

	warn "Will try to rebase '$NAME' which is based on '$BASE_BRANCH'..."
	if ! git_config_bool_exists "rebase.autostash"; then
		require_clean_working_tree
	fi
	require_branch "$BRANCH"

	git_local_branch_exists "$BASE_BRANCH" || die "The base '$BASE_BRANCH' doesn't exists locally or is not a branch. Can't rebase the release branch '$BRANCH'."

	git_do checkout -q "$BRANCH"  || die "Could not check out branch '$BRANCH'."
	if flag interactive; then
		opts="$opts -i"
	fi
	if flag preserve_merges; then
		opts="$opts -p"
	fi
	git_do rebase $opts "$BASE_BRANCH"
}

cmd_delete() {
	OPTIONS_SPEC="\
git flow release delete [-h] [-f] [-r] <name>

Delete the given release branch
--
h,help           Show this help
showcommands!    Show git commands while executing them
f,[no]force      Force deletion
r,[no]remote     Delete remote branch
"
	local current_branch

	# Define flags
	DEFINE_boolean 'force' false "force deletion" f
	DEFINE_boolean 'remote' false "delete remote branch" r

	# Override defaults with values from config
	gitflow_override_flag_boolean   "release.delete.fetch"    "fetch"
	gitflow_override_flag_boolean   "release.delete.remote"   "remote"

	# Parse arguments
	parse_args "$@"

	gitflow_require_version_arg

	# Sanity checks
	require_branch "$BRANCH"

	BASE_BRANCH=$(gitflow_config_get_base_branch $BRANCH)
	BASE_BRANCH=${BASE_BRANCH:-$DEVELOP_BRANCH}

	run_pre_hook "$VERSION" "$ORIGIN" "$BRANCH"

	current_branch=$(git_current_branch)
	# We can't delete a branch we are on, switch to the develop branch.
	if [ "$BRANCH" = "$current_branch" ]; then
		require_clean_working_tree
		if git_local_branch_exists "$BASE_BRANCH"; then
			git_do checkout "$BASE_BRANCH"
		else
			git_do checkout "$DEVELOP_BRANCH" || die "Could not check out branch '$DEVELOP_BRANCH'."
		fi
	fi

	if ( git_is_branch_merged_into "$BRANCH" "$MASTER_BRANCH" && git_is_branch_merged_into "$BRANCH" "$BASE_BRANCH" ); then
		git_do branch -d "$BRANCH" || die "Could not delete the $BRANCH."
		if flag remote; then
			git_remote_branch_delete "$BRANCH"
		fi
	else
		if flag force; then
			git_do branch -D "$BRANCH" || die "Could not delete the $BRANCH."
			if flag remote; then
				git_remote_branch_delete "$BRANCH"
			fi
		else
			die "Release branch '$BRANCH' has been not been merged in branch '$MASTER_BRANCH' and/or branch '$BASE_BRANCH'. Use -f to force the deletion."
		fi
	fi

	gitflow_config_remove_base_section "$BRANCH"
	run_post_hook "$VERSION" "$ORIGIN" "$BRANCH"

	echo
	echo "Summary of actions:"
	echo "- Release branch '$BRANCH' has been deleted."
	flag remote && echo "- Release branch '$BRANCH' in '$ORIGIN' has been deleted."
	echo "- You are now on branch '$(git_current_branch)'"
	echo
}