tools.sh

#!/bin/bash

GITTOOLS_MATCHES=$(git config --get-regexp   devel-base | grep -E '^devel-base\.' | sed -e 's/devel-base\.//' -e 's/---/\//g' -e 's/--/./g')

gittools_match_branch()
{
	local branch=$(echo $1 | tr 'A-Z' 'a-z')
	set -- $GITTOOLS_MATCHES
	while [ $# -ne 0 ]; do
		local regexp=$1
		local basename=$2
		if [[ "$branch" =~ "${regexp}/" ]]; then
			echo $basename
			return
                elif [[ "$branch" = "${regexp}" ]]; then
			echo $basename
			return
		fi
		shift 2;
	done
	return 1
}

gittools_really_match_branch()
{
	gittools_match_branch $1 || \
		(echo -n "origin/"; echo $1 | sed -e 's/^aci\/[a-zA-Z0-9_-]*\///' -e 's/^user\/[a-zA-Z0-9_-]*\///')
}

gittools_curbranch()
{
	git rev-parse --abbrev-ref HEAD
}

gittools_prefix_opt()
{
	local branch=$(gittools_curbranch)
	pattern=$(echo ${branch} | sed -e "s/\(.*\/$(whoami)\/\)\?\([^\/]*\)\/.*/\2/")
	TITLE=$(git config --get patch.prefix.${pattern})
	if [ $? -eq 0 ]; then
		echo "--subject-prefix=${TITLE}"
	else
		echo "--subject-prefix=PATCH"
	fi
	return
}

gittools_match_curbranch()
{
	gittools_match_branch $(gittools_curbranch)
}

gittools_really_match_curbranch()
{
	gittools_really_match_branch $(gittools_curbranch)
}

gittools_get_patch_target_option()
{
	local target=$(git config --get patch.target)
	if [ "$target" != "" ]; then
		echo "--to $target"
	else
		echo "WARNING: No target --to specified in patch.target" >&2
	fi
}

gittools_gen_timestamp()
{
	date '+%Y/%m/%d/%H%M%S'
}

gittools_is_branch_checked_out()
{
	local bname=$1
	local top=$(readlink -f $(git rev-parse --show-toplevel))
	git worktree list  | awk '{ print $1 " " $NF}' | grep '\[' | sed -e 's/\[//' -e 's/]//' |\
		while read repo branch; do
			if [ "$(readlink -f $repo)" == "$top" ]; then
				continue
			fi;
			if [ "$branch" == "$bname" ]; then
				echo $repo
				return 0
			fi;
		done
	return 1
}

gittools_check_work()
{
	set +e
	git rev-parse -q --verify $1 > /dev/null
	if [ $? -ne 0 ]; then
		echo "Ref $1 does not exists" >&2
		exit 1
	fi
	git rev-parse  -q --verify $2 > /dev/null
	if [ $? -ne 0 ]; then
		echo "Ref $2 does not exists" >&2
		exit 1
	fi
	set -e
	if [ $(git rev-parse $1) == $(git rev-parse $2) ]; then
		echo "No commit on this branch. Nothing to do..."
		exit 0
	fi
}

gittools_check_config_set()
{
	local config=$1
	git config $1 > /dev/null
	if [ $? -ne 0 ]; then
		echo "ERROR: $1 needs to be set int .git/config" >&2
		exit 1
	fi
}

gittools_rebase_branch()
{
	local branch=$1
	local base=$2
	local ignore_err=$3
        local handle_lclone=$4

	local branch_head=$(git rev-parse $branch)
	local base_head=$(git rev-parse $base)

	if [ "$branch_head" == "$base_head" ]; then
		echo "INTEGRATED UPSTREAM: ${branch} already made it into ${base}"
		return
	fi

	co_repo=$(gittools_is_branch_checked_out $branch)
	if [ "$co_repo" != "" ]; then
            if [ "$handle_lclone" == 1 ]; then
                pushd "$co_repo"
            else
		echo "SKIPPING: ${branch} already checked out @ ${co_repo}"
		return
            fi
	fi
	echo "REBASING: ${branch} on ${base}"
	git checkout  $branch

	git rebase $base --keep-empty
	if [ $? -ne 0 ]; then
		echo "REBASING FAILURE: ${branch} on ${base}"
		if [ "$ignore_err" == 1 ]; then
			git rebase --abort
		else
			echo "REBASING FAILURE: Stopping here for manual fixup"
	                if [ "$co_repo" != "" ]; then
                            echo "REBASING FAILURE: happened in ${co_repo}"
                        fi
			exit 1
		fi
	fi
	branch_head=$(git rev-parse $branch)

        if [ "$handle_lclone" == 1 ]; then
            popd
        fi
	if [ "$branch_head" == "$base_head" ]; then
		echo "INTEGRATED UPSTREAM: ${branch} just made it into ${base}"
		return
	fi
}