Makefile

TARGET_FILE = "dru"
PRJ_SRC = "${PWD}/src/main.sh"
PRJ_LIB = $(shell find -L lib -type f -name "*sh")
VERSION = $(shell git tag | tail -n1 | sed -e 's/^v//')

export PRJ_LIB

SHELL := /bin/bash
all: define_main add_dependencies invoke_main

define_main:
	echo -e "#!/usr/bin/env bash\n" > ${TARGET_FILE}
	echo -e "VERSION=${VERSION}\n" >> ${TARGET_FILE}
	echo -e "function main() {\n" >> ${TARGET_FILE}
	cat "${PRJ_SRC}" | sed -e 's/^/  /g' >> ${TARGET_FILE}
	echo -e "\n}\n" >> ${TARGET_FILE}

invoke_main:
	echo "main \$$@" >> ${TARGET_FILE}

add_dependencies:
	for filename in $${PRJ_LIB[*]}; do cat $${filename} >> ${TARGET_FILE}; echo >> ${TARGET_FILE}; done

test:
	cd spec; \
	for filename in ./*; do \
	  bash $$filename; \
	  if [[ $$? -ne 0 ]]; then \
	    echo "Spec $$filename failed"; \
	    exit 1; \
	  fi; \
	done && echo "All tests passed!"