borg

#!/usr/bin/env bash

bbbs_user_name=borg

bbbs_opt_path=$(cd -P -- "$(dirname -- "$0")" && pwd -P)

if [ "$(id --user --name)" != "$bbbs_user_name" ]; then # logname / whoami
	echo "Reexecuting as ${bbbs_user_name}"
	exec sudo -u "$bbbs_user_name" "${bbbs_opt_path}/$(basename $BASH_SOURCE)" "$@"
else
	# Set an UTF-8 locale, see README.md for explanation about this
	lcutf8=0 # utf8 locale is not set
	unilocales=$(locale -a 2>/dev/null | grep -iE '\.utf-?8') # List UTF-8 locales
	for env in 'LC_ALL' 'LC_CTYPE' 'LANG'; do # LC_ALL > LC_CTYPE > LANG ; LANGUAGE is for gettext
		if [ -n "${!env:+x}" ]; then # Is defined & not null
			(echo "${!env}" | grep -iE '\.utf-?8' > /dev/null) && lcutf8=1 && break # If it's utf8 already, we're done
			if [ -n "$unilocales" ]; then # If we have somewhere to search
				simple=$(echo "${!env}" | cut -d'.' -f1 | cut -d'@' -f1)
				found=$(echo "$unilocales" | grep -im1 "^${simple}\.") # Look for an utf8 alternative
				[ -n "$found" ] && export "${env}=${found}" && lcutf8=2 && break # Set it and done
			fi
			export -n "$env" # Otherwise remove this non-utf8 higher priority
		fi
	done
	if [ $lcutf8 -eq 0 -a -n "$unilocales" ]; then # Still no utf8 locale prioritized, all non-utf8 locales are now unset
		for try in '^C\.' '^en_GB\.' '^en_US\.' '^en_' ''; do # So last try .. C, then English, then first available
			found=$(echo "$unilocales" | grep -im1 "$try")
			[ -n "$found" ] && export LC_CTYPE="$found" && lcutf8=3 && break
		done
	fi
	unset -v unilocales

	exec "${bbbs_opt_path}/borg.bin" "$@"
fi