Kaleidoscope/bin/kaleidoscope-builder

#!/usr/bin/env bash
# kaleidoscope-builder - Kaleidoscope helper tool
# Copyright (C) 2017-2018  Keyboard.io, Inc.
#
# This program is free software: you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, version 3.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program. If not, see <http://www.gnu.org/licenses/>.

set -e

######
###### Build and output configuration
######


identify_os() {


## Platform-specific overrides
# Shamelessly stolen from git's Makefile
uname_S=$(uname -s 2>/dev/null || echo not)
uname_O=$(uname -o 2>/dev/null || echo not)
}

absolute_filename() {
	echo "$(cd "$(dirname "$1")" && pwd)/$(basename "$1")"
}

read_conf_files() {

	for conf_file in \
		"${HOME}/.kaleidoscope-builder.conf" \
		"$(pwd)/.kaleidoscope-builder.conf" \
		"$(pwd)/kaleidoscope-builder.conf" \
		"${KALEIDOSCOPE_DIR}/etc/kaleidoscope-builder.conf"; do
		if [ -e "${conf_file}" ]; then
			# shellcheck disable=SC1090
			. "${conf_file}"
		fi

	done
}
configure_arduino_cli_env() {

	SYSTEM_ARDUINO_CLI="$(command -v arduino-cli || true)"

	if [ -z "${SYSTEM_ARDUINO_CLI}" ]; then
		: "${ARDUINO_CLI:=${KALEIDOSCOPE_BIN_DIR}/arduino-cli}"
	else
		: "${ARDUINO_CLI:=${SYSTEM_ARDUINO_CLI}}"
	fi

	: "${ARDUINO_CONTENT:=${KALEIDOSCOPE_DIR}/.arduino}"
	: "${ARDUINO_DIRECTORIES_DATA:=${ARDUINO_CONTENT}/data}"
	: "${ARDUINO_DIRECTORIES_DOWNLOADS:=${ARDUINO_CONTENT}/downloads}"
	: "${ARDUINO_DIRECTORIES_USER:=${ARDUINO_CONTENT}/user}"
	: "${ARDUINO_CLI_CONFIG:=${ARDUINO_DIRECTORIES_DATA}/arduino-cli.yaml}"
	: "${ARDUINO_BOARDS_MANAGER_KALEIDOSCOPE:=https://raw.githubusercontent.com/keyboardio/boardsmanager/master/package_keyboardio_index.json}"
}

install_arduino_cli() {
	# todo cd to kaleidoscope dir
	curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh
}

configure_arduino_cli() {
	if [ -z "${ARDUINO_CLI}" ]; then
		install_arduino_cli
	fi
	if [ -z "${ARDUINO_CLI_CONFIG}" ]; then
		install_arduino_cli_config
	fi
}

install_arduino_cli_config() {
	run_arduino_cli config init
}

install_arduino_core_kaleidoscope() {
	install_arduino_core_avr

	install_arduino_core "keyboardio:avr"
}

install_arduino_core_avr() {
	install_arduino_core "arduino:avr"
}

install_arduino_core() {
	run_arduino_cli core install "$1"
}

run_arduino_cli() {
	ARDUINO_DIRECTORIES_USER=${ARDUINO_DIRECTORIES_USER} \
		ARDUINO_DIRECTORIES_DATA=${ARDUINO_DIRECTORIES_DATA} \
		ARDUINO_DIRECTORIES_DOWNLOADS=${ARDUINO_DIRECTORIES_DOWNLOADS} \
		ARDUINO_BOARD_MANAGER_ADDITIONAL_URLS=${ARDUINO_BOARDS_MANAGER_KALEIDOSCOPE} \
		"${ARDUINO_CLI}" "$@"
}

build_version() {
	: "${LIB_PROPERTIES_PATH:="../.."}"
	GIT_VERSION="$(
		cd "${SKETCH_DIR}"
		if [ -d .git ]; then echo -n '-g' && git describe --abbrev=4 --dirty --always; fi
	)"
	LIB_VERSION="$(
		cd "${SKETCH_DIR}"
		(grep version= "${LIB_PROPERTIES_PATH}/library.properties" 2>/dev/null || echo version=0.0.0) | cut -d= -f2
	)${GIT_VERSION}"
}

build_paths() {
	# We need that echo because we\re piping to cksum
	# shellcheck disable=SC2005
	SKETCH_IDENTIFIER="$(echo "${SKETCH_FILE_PATH}" | cksum | cut -d ' ' -f 1)-${SKETCH_FILE_NAME}"
	: "${KALEIDOSCOPE_TEMP_PATH:=${TMPDIR:-/tmp}/kaleidoscope-${USER}}"

	: "${KALEIDOSCOPE_BUILD_PATH:=${KALEIDOSCOPE_TEMP_PATH}/sketch}"
	: "${KALEIDOSCOPE_OUTPUT_PATH:=${KALEIDOSCOPE_TEMP_PATH}/sketch}"

	: "${SKETCH_OUTPUT_DIR:=${SKETCH_IDENTIFIER}/output}"
	: "${SKETCH_BUILD_DIR:=${SKETCH_IDENTIFIER}/build}"

	: "${BUILD_PATH:=${KALEIDOSCOPE_BUILD_PATH}/${SKETCH_BUILD_DIR}}"
	: "${OUTPUT_PATH:=${KALEIDOSCOPE_OUTPUT_PATH}/${SKETCH_OUTPUT_DIR}}"

	: "${CCACHE_WRAPPER_PATH:=${KALEIDOSCOPE_TEMP_PATH}/ccache/bin}"
	: "${CORE_CACHE_PATH:=${KALEIDOSCOPE_TEMP_PATH}/arduino-cores}"

	mkdir -p "$CORE_CACHE_PATH"
	mkdir -p "$BUILD_PATH"
}

build_filenames() {
	: "${OUTPUT_FILE_PREFIX:=${SKETCH_BASE_NAME}-${LIB_VERSION}}"
	: "${HEX_FILE_PATH:=${OUTPUT_PATH}/${OUTPUT_FILE_PREFIX}.hex}"
	: "${HEX_FILE_WITH_BOOTLOADER_PATH:=${OUTPUT_PATH}/${OUTPUT_FILE_PREFIX}-with-bootloader.hex}"
	: "${ELF_FILE_PATH:=${OUTPUT_PATH}/${OUTPUT_FILE_PREFIX}.elf}"
	: "${LIB_FILE_PATH:=${OUTPUT_PATH}/${OUTPUT_FILE_PREFIX}.a}"
}

enable_ccache() {
	if [ -z "${CCACHE_NOT_SUPPORTED}" ] && [ "$(command -v ccache)" ]; then
		if ! [ -d "$CCACHE_WRAPPER_PATH" ]; then
			mkdir -p "$CCACHE_WRAPPER_PATH"

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}${C_COMPILER_BASENAME}" ]; then
				ln -s "$(command -v ccache)" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}${C_COMPILER_BASENAME}"
			fi

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}${CXX_COMPILER_BASENAME}" ]; then
				ln -s "$(command -v ccache)" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}${CXX_COMPILER_BASENAME}"
			fi

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}nm" ]; then
				ln -s "${AVR_NM}" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}nm"
			fi

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}objcopy" ]; then
				ln -s "${AVR_OBJCOPY}" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}objcopy"
			fi

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}ar" ]; then
				ln -s "${AVR_AR}" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}ar"
			fi

			if ! [ -h "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}size" ]; then
				ln -s "${AVR_SIZE}" "${CCACHE_WRAPPER_PATH}/${COMPILER_PREFIX}size"
			fi
		fi

		export CCACHE_PATH=${COMPILER_PATH}/
		CCACHE_ENABLED=1

	fi
}

firmware_size() {
	if [ "${ARCH}" = "virtual" ]; then
		echo "[Size not computed for virtual build]"
		return
	fi

	: "${MAX_PROG_SIZE:=$(get_arduino_pref 'upload.maximum_size')}"

	## This is a terrible hack, please don't hurt me. - algernon

	set +e
	raw_output=$("$@" 2>/dev/null)
	rc=$?
	set -e

	if [ $rc -eq 0 ]; then
		output="$(echo "${raw_output}" | grep "\\(Program\\|Data\\):" | sed -e 's,^,  - ,' && echo)"

		PROGSIZE="$(echo "${output}" | grep "Program:" | cut -d: -f2 | awk '{print $1}')"

		PERCENT="$(echo "${PROGSIZE}" "${MAX_PROG_SIZE}" | awk "{ printf \"%02.01f\", \$1 / \$2 * 100 }")"

		# we want the sed there, doing with shell builtins would be worse.
		# shellcheck disable=SC2001 disable=SC1117
		echo "${output}" | sed -e "s/\(Program:.*\)(\([0-9\.]*%\) Full)/\1(${PERCENT}% Full)/"
	else
		echo "Unable to determine image size."
	fi
}

find_sketch() {
	SKETCH_DIR="${SKETCH:-$(absolute_filename "$(pwd)")}"
	SKETCH_BASE_NAME=$(basename "${SKETCH_DIR}")
	SKETCH_FILE_NAME="${SKETCH_BASE_NAME}.ino"

	# Arduino sketches are usually a file inside directory Foo named Foo.ino, so try that as a fallback
	for dir in \
		"${SKETCH_DIR}" \
		"src/" \
		"."; do
		if [ -f "${dir}/${SKETCH_FILE_NAME}" ]; then
			SKETCH_DIR="${dir}"
			SKETCH_FILE_PATH=$(absolute_filename "${dir}/${SKETCH_FILE_NAME}")
			return
		fi
	done
	echo "I couldn't find your sketch (.ino file)" >&2
	exit 1
}

find_device_vid_pid() {
	: "${VID:=$(get_arduino_pref 'build.vid')}"
	: "${SKETCH_PID:=$(get_arduino_pref 'build.pid')}"
	: "${BOOTLOADER_PID:=$(get_arduino_pref 'bootloader.pid')}"
	: "${BOOTLOADER_VID:=$(get_arduino_pref 'bootloader.vid')}"
}

prompt_before_flashing() {
	flashing_instructions=$(get_arduino_pref 'build.flashing_instructions')

	if [ "x${flashing_instructions}x" = "xx" ]; then
		flashing_instructions="If your keyboard needs you to do something to put it in flashing mode, do that now."
	fi

	printf '%b\n\n' "${flashing_instructions}"
	echo ""
	echo "When you're ready to proceed, press 'Enter'."

	# We do not want to permit line continuations here. We just want a newline.
	# shellcheck disable=SC2162
	read
}

reset_device_cmd() {
        if [ -z ${NO_RESET} ]; then
                if [ "${uname_S}" = "Darwin" ]; then
                        /bin/stty -f ${DEVICE_PORT} 1200
                elif [ "${uname_S}" = "FreeBSD" ]; then
                        /bin/stty -f ${DEVICE_PORT} 1200

                elif [ "${uname_O}" = "Cygwin" ]; then
                        cmd /c mode ${DEVICE_COM_PORT} baud=1200
                else
                        stty -F ${DEVICE_PORT} 1200 hupcl
                fi
        fi
}

flash() {
	compile "$@"

	# Check to see if we can see a keyboard bootloader port.
	# If we -can-, then we should skip over the "reset to bootloader" thing
	find_bootloader_ports
	if [ -z "${DEVICE_PORT_BOOTLOADER}" ]; then
		prompt_before_flashing

		# This is defined in the (optional) user config.
		# shellcheck disable=SC2154
		${preFlash_HOOKS}

		# If we're -not- doing a manual reset, then try to do it automatically
		if [ -z "${MANUAL_RESET}" ]; then
			reset_device
			sleep 2
			find_bootloader_ports
			# Otherwise, poll for a bootloader port.
		else
			wait_for_bootloader_port
		fi

	fi

	check_bootloader_port_and_flash

	# This is defined in the (optional) user config.
	# shellcheck disable=SC2154
	${postFlash_HOOKS}
}

wait_for_bootloader_port() {
	declare -i tries
	tries=15

	while [ "$tries" -gt 0 ] && [ -z "${DEVICE_PORT_BOOTLOADER}" ]; do
		sleep 1
		printf "."
		find_bootloader_ports
		# the variable annotations do appear to be necessary
		# shellcheck disable=SC2004
		tries=$(($tries - 1))
	done

	if [ "$tries" -gt 0 ]; then
		echo "Found."
	else
		echo "Timed out."
	fi
}

check_bootloader_port() {
	if [ -z "${DEVICE_PORT_BOOTLOADER}" ]; then
		echo "Unable to detect a keyboard in bootloader mode."
		echo "You may need to hold a key or hit a reset button."
		echo "Please check your keyboard's documentation"
		return 1
	fi

}

check_bootloader_port_and_flash() {

	if ! check_bootloader_port; then
		return 1
	fi

	echo "Flashing your keyboard:"

	# If the flash fails, try a second time
	if ! flash_over_usb; then
		sleep 2
		if ! flash_over_usb; then
			if [ "${ARDUINO_VERBOSE}" != "--verbose" ]; then
				echo "Something went wrong."
				echo "You might want to try flashing again with the VERBOSE environment variable set"
			fi

			return 1
		fi
	fi
	echo "Keyboard flashed successfully!"
	return 0
}

flash_from_bootloader() {
	compile "$@"
	prompt_before_flashing
	find_bootloader_ports
	check_bootloader_port_and_flash
}

program() {
	compile "$@"
	prompt_before_flashing
	flash_with_programmer
}

flash_with_programmer() {
	${AVRDUDE_CMD} \
		-cusbtiny \
		-B 1 \
		"-Uflash:w:${HEX_FILE_PATH}:i"
}

flash_over_usb() {
	FLASH_CMD=$(${AVRDUDE_CMD} \
		-cavr109 \
		-P "${DEVICE_PORT_BOOTLOADER}" \
		-b57600 \
		"-Uflash:w:${HEX_FILE_PATH}:i")
	if [ "${ARDUINO_VERBOSE}" != "--verbose" ]; then
		${FLASH_CMD} 2>&1 | grep -v ^avrdude | grep -v '^$' | grep -v '^ ' | grep -vi programmer
		return "${PIPESTATUS[0]}"
	else
		${FLASH_CMD}
		return $?
	fi
}

hex_with_bootloader() {
	compile

	: "${BOOTLOADER_PATH:=$(get_arduino_pref 'runtime.platform.path')/bootloaders/$(get_arduino_pref 'bootloader.file')}"

	awk '/^:00000001FF/ == 0' "${HEX_FILE_PATH}" >"${HEX_FILE_WITH_BOOTLOADER_PATH}"
	echo "Using ${BOOTLOADER_PATH}"
	cat "${BOOTLOADER_PATH}" >>"${HEX_FILE_WITH_BOOTLOADER_PATH}"
	ln -sf -- "${OUTPUT_FILE_PREFIX}-with-bootloader.hex" "${OUTPUT_PATH}/${SKETCH_BASE_NAME}-latest-with-bootloader.hex"
	cat <<-EOF

		Combined firmware and bootloader are now at ${HEX_FILE_WITH_BOOTLOADER_PATH}
		Make sure you have the bootloader version you expect.

		And TEST THIS ON REAL HARDWARE BEFORE YOU GIVE IT TO ANYONE

	EOF
}

build() {
	compile "$@"
	size "$@"
}

prepare_ccache() {
	find_sketch
	build_paths
	enable_ccache
}
compile() {
	find_sketch
	set_executable_paths
	build_version
	build_paths
	build_filenames
	# If the hex file is older than the sketch file, or the hex file does not exist
	# then rebuild. This is not as correct as letting make check our dependencies
	# But it's less broken for most user use cases
	# TODO(anyone): Make this suck less
	if [ "${HEX_FILE_PATH}" -ot "${SKETCH_FILE_PATH}" ]; then
		do_compile "$@"
	else
		echo "${HEX_FILE_PATH} did not need to be rebuilt"
	fi

}

set_executable_paths() {
	######
	###### Executable paths
	######

	# Allow the compiler path to be empty for virtual builds
	# should use compiler.path instead of appending bin, but we don't have substitution het
	: "${COMPILER_PATH=$(get_arduino_pref 'runtime.tools.avr-gcc.path')/bin}"

	COMPILER_SUFFIX=""

	C_COMPILER_BASENAME=$(basename "${CC:-gcc}")
	CXX_COMPILER_BASENAME=$(basename "${CXX:-g++}")
	AR_BASENAME=$(basename "${AR:-ar}")

	# Allow the compiler prefix to be empty for virtual builds
	COMPILER_PREFIX="${COMPILER_PREFIX-avr-}"
	: "${AVR_SIZE:=${COMPILER_PATH}/${COMPILER_PREFIX}size}"
	: "${AVR_OBJDUMP:=${COMPILER_PATH}/${COMPILER_PREFIX}objdump}"
	: "${AVR_OBJCOPY:=${COMPILER_PATH}/${COMPILER_PREFIX}objcopy}"
	: "${AVR_NM:=${COMPILER_PATH}/${COMPILER_PREFIX}nm}"
	: "${AVR_AR:=${COMPILER_PATH}/${COMPILER_PREFIX}ar}"

	# TO DO should use tools.avrdude.cmd.path and tools.avrdude.config.path instead of hardcoding
	: "${AVRDUDE:=$(get_arduino_pref 'runtime.tools.avrdude.path')/bin/avrdude}"
	: "${AVRDUDE_CONF:=$(get_arduino_pref 'runtime.tools.avrdude.path')/etc/avrdude.conf}"
	AVRDUDE_CMD="${AVRDUDE} -v-C \"${AVRDUDE_CONF}\" -D -p\"$(get_arduino_pref 'build.mcu')\""

}

do_compile() {
	prepare_ccache

	install -d "${OUTPUT_PATH}"

	echo "Building ${SKETCH_FILE_PATH}"

	# This is defined in the (optional) user config.
	# shellcheck disable=SC2154
	${compile_HOOKS}

	SAVED_BOARD="${BOARD}"
	SAVED_FQBN="${FQBN}"
	if [ -e "${SKETCH_DIR}/.kaleidoscope-builder.conf" ]; then
		# shellcheck disable=SC1090
		BOARD="$(. "${SKETCH_DIR}"/.kaleidoscope-builder.conf && echo "${BOARD}")"
		# shellcheck disable=SC1090
		FQBN="$(. "${SKETCH_DIR}"/.kaleidoscope-builder.conf && echo "${FQBN}")"
		if [ -n "${BOARD}" ]; then
			: "${ARCH:=avr}"
			FQBN="keyboardio:${ARCH}:${BOARD}"
		fi
	fi

	do_compile_with_cli

	if [ -z "${LIBONLY}" ]; then
		cp "${BUILD_PATH}/${SKETCH_FILE_NAME}.hex" "${HEX_FILE_PATH}"
		cp "${BUILD_PATH}/${SKETCH_FILE_NAME}.elf" "${ELF_FILE_PATH}"
		ln -sf "${OUTPUT_FILE_PREFIX}.hex" "${OUTPUT_PATH}/${SKETCH_BASE_NAME}-latest.hex"
		ln -sf "${OUTPUT_FILE_PREFIX}.elf" "${OUTPUT_PATH}/${SKETCH_BASE_NAME}-latest.elf"
	else
		cp "${BUILD_PATH}/${SKETCH_FILE_NAME}.a" "${LIB_FILE_PATH}"
		ln -sf "${OUTPUT_FILE_PREFIX}.a" "${OUTPUT_PATH}/${SKETCH_BASE_NAME}-latest.a"
	fi

	if [ "${ARDUINO_VERBOSE}" == "--verbose" ]; then
		echo "Build artifacts can be found in ${BUILD_PATH}"
	fi

	BOARD="${SAVED_BOARD}"
	FQBN="${SAVED_FQBN}"
}

get_arduino_pref() {
	pref=$1
	# Strip the preference name. And then strip leading and trailing quotations
	MESSAGE=$(dump_arduino_prefs | grep --max-count=1 "${pref}=" | sed -e s/^.*"${pref}"=// -e 's/^"//' -e 's/"$//')
	echo "$MESSAGE"
}

dump_arduino_prefs() {
	if [ "x${_ARDUINO_PREFS}x" == "xx" ]; then
		_ARDUINO_PREFS=$(run_arduino_cli --fqbn "${FQBN}" compile --show-properties "${SKETCH_FILE_PATH}")
	fi
	echo "$_ARDUINO_PREFS"
}

do_compile_with_cli() {
	#-build-cache "${CORE_CACHE_PATH}" \

	if [ $CCACHE_ENABLED ]; then
		COMPILER_PATH_PROP="${CCACHE_WRAPPER_PATH}/"
	else
		COMPILER_PATH_PROP="${COMPILER_PATH}"
	fi

	_CMD_CXX="${CXX:-${COMPILER_PREFIX}${CXX_COMPILER_BASENAME}${COMPILER_SUFFIX}}"
	_CMD_CC="${CC:-${COMPILER_PREFIX}${C_COMPILER_BASENAME}${COMPILER_SUFFIX}}"
	_CMD_AR="${AR:-${COMPILER_PREFIX}${AR_BASENAME}${COMPILER_SUFFIX}}"
	run_arduino_cli compile \
		--fqbn "${FQBN}" \
		--libraries "${KALEIDOSCOPE_DIR}/.." \
		--build-path "${BUILD_PATH}" \
		--output-dir "${OUTPUT_PATH}" \
		--build-properties "compiler.path=${COMPILER_PATH_PROP}" \
		--build-properties "compiler.c.cmd=${_CMD_CC}" \
		--build-properties "compiler.cpp.cmd=${_CMD_CXX}" \
		--build-properties "compiler.ar.cmd=${_CMD_AR}" \
		--build-properties "compiler.c.elf.cmd=${_CMD_CXX}" \
		--build-properties "compiler.cpp.extra_flags=${LOCAL_CFLAGS}" \
		--warnings all \
		"${SKETCH_FILE_PATH}"
}

find_all_sketches() {
	for sketch_name in ./*.ino \
		$([ -d examples ] && find examples -name '*.ino') \
		src/*.ino; do
		if [ -d "$(dirname "${sketch_name}")" ] || [ -f "${sketch_name}" ]; then
			p="$(basename "${sketch_name}" .ino)"
			if [ "${p}" != '*' ]; then
				case "${sketch_name}" in
				examples/*/${p}/${p}.ino)
					echo "${sketch_name}" | sed -e "s,examples/,," | sed -e "s,/${p}\\.ino,,"
					;;
				*)
					echo "${p}"
					;;
				esac
			fi
		fi
	done | sort
}

build_all() {
	plugins="$(find_all_sketches)"

	for sketch in ${plugins}; do
		export SKETCH="${sketch}"
		$0 "${sketch}" build
	done
}

size() {
	compile

	: "${AVR_SIZE_FLAGS:=-C --mcu=$(get_arduino_pref 'build.mcu')}"
	echo "- Size: ${ELF_FILE_PATH}"
	# shellcheck disable=SC2086
	firmware_size "${AVR_SIZE}" ${AVR_SIZE_FLAGS} "${ELF_FILE_PATH}"
	echo
}

size_map() {
	compile

	"${AVR_NM}" --size-sort -C -r -l -t decimal "${ELF_FILE_PATH}"
}

disassemble() {
	compile

	"${AVR_OBJDUMP}" -C -d "${ELF_FILE_PATH}"
}

decompile() {
	disassemble
}

clean() {
	find_sketch
	build_paths
	if [ -d "$OUTPUT_PATH" ]; then
		rm -rf -- "${OUTPUT_PATH}"
	fi
}

reset_device() {
	find_device_port
	check_device_port
	reset_device_cmd
}

check_device_port() {
	if [ -z "$DEVICE_PORT" ]; then
		cat <<EOF >&2

I couldn't autodetect the keyboard's serial port.

If you see this message and your keyboard is connected to your computer,
it may mean that our serial port detection logic is buggy or incomplete.
In that case, please report this issue at:
	 https://github.com/keyboardio/Kaleidoscope
EOF
		exit 1
	elif echo "$DEVICE_PORT" | grep -q '[[:space:]]'; then
		cat <<EOF >&2
Unexpected whitespace found in detected serial port:

    $DEVICE_PORT

If you see this message, it means that our serial port
detection logic is buggy or incomplete.

Please report this issue at:
	 https://github.com/keyboardio/Kaleidoscope
EOF
		exit 1
	fi

	if ! [ -w "$DEVICE_PORT" ]; then
		cat <<EOF >&2

In order to update your keyboard's firmware you need to have permission
to write to its serial port $DEVICE_PORT.

It appears that you do not have this permission:

  $(ls -l "$DEVICE_PORT")

This may be because you're not in the correct unix group:

  $(stat -c %G "$DEVICE_PORT").

You are currently in the following groups:

  $(id -Gn)

Please ensure you have followed the instructions on setting up your
account to be in the right group:

https://github.com/keyboardio/Kaleidoscope/wiki/Install-Arduino-support-on-Linux

EOF
		exit 1
	fi
}

usage() {
	cat <<-EOF
		Usage: $0 SKETCH commands...

		Runs all of the commands in the context of the Sketch.

		Available commands:

		  help
		    This help screen.

		  compile
		    Compiles the sketch.

		  size
		    Reports the size of the compiled sketch.

		  build
		    Runs compile and report-size.

		  clean
		    Cleans up the output directory.

		  size-map
		    Displays the size map for the sketch.

		  disassemble
		    Decompile the sketch.

		  reset-device
		    Reset the device.

		  flash
		    Flashes the firmware using avrdude.

	EOF
}

help() {
	usage
}

if [ $# -lt 1 ]; then
	usage
	exit 1
fi

# Temporary migration for old makefiles
# I'm not thrilled about how we default to system Arduino dirs.
if [ -n "${BOARD_HARDWARE_PATH}" ]; then
	ARDUINO_DIRECTORIES_USER="${BOARD_HARDWARE_PATH}/../"
fi

: "${KALEIDOSCOPE_DIR:=$(
	cd "$(dirname "$0")"/..
	pwd
)}"
# shellcheck disable=SC2034
: "${KALEIDOSCOPE_BIN_DIR:=${KALEIDOSCOPE_DIR}/bin/}"

identify_os
read_conf_files
configure_arduino_cli_env

# shellcheck disable=SC1090

if [ -n "${VERBOSE}" ] && [[ "${VERBOSE}" -gt 0 ]]; then
	ARDUINO_VERBOSE="--verbose"
else
	ARDUINO_VERBOSE="--quiet"
fi

## Parse the command-line
##  - anything that has a =, is an env var
##  - from the remaining stuff, the first one is the Library/Sketch
##  - everything else are commands
##
##  - if there is only one argument, that's a command

cmds=""

## Export vars
for i in $(seq 1 $#); do
	v="$1"
	shift

	case "${v}" in
	*=*)
		# Exporting an expansion is *precisely* what we want here.
		# shellcheck disable=SC2086,SC2163
		export ${v}
		;;
	*)
		cmds="${cmds} ${v}"
		;;
	esac
done

# Word splitting is desired here.
# shellcheck disable=SC2086
set -- ${cmds}

if [ $# -eq 1 ]; then
	cmd="$(echo "$1" | tr '-' '_')"
	${cmd}
	exit $?
fi

SKETCH="$1"
shift

cmds=""

# shellcheck disable=2034
for i in $(seq 1 $#); do
	cmds="${cmds} $(echo "$1" | tr '-' '_')"
	shift
done

for cmd in ${cmds}; do
	${cmd}
done