[ERD diagram generation via Makefile] #erd #make

Makefile

#!/usr/bin/make -f

.DEFAULT_GOAL := help
.ONESHELL:

cwd := $(shell pwd)
comma := ,

.PHONY: build-erd

ERD_BIN := $(shell command -v erd 2> /dev/null)
ERD_INPUT_DIR := './docs/erm'
ERD_OUTPUT_DIR := '$(ERD_INPUT_DIR)/output'
ERD_FILES := $(notdir $(shell find $(ERD_INPUT_DIR)/*.er -type f))

# currently OSX only
PDF_MERGER := '/System/Library/Automator/Combine PDF Pages.action/Contents/Resources/join.py'

build-erd: $(ERD_OUTPUT_DIR)/svg $(ERD_OUTPUT_DIR)/pdf ## Build ER diagrams from .er files located in docs folder
	@echo "Generate SVGs and PDFs.."
ifndef ERD_BIN
	$(error "erd is not available. please install")
endif
	@for file in $(ERD_FILES); do \
		$(ERD_BIN) -i $(ERD_INPUT_DIR)/$$file -o $(ERD_OUTPUT_DIR)/svg/$$file.svg; \
		$(ERD_BIN) -i $(ERD_INPUT_DIR)/$$file -o $(ERD_OUTPUT_DIR)/pdf/$$file.pdf; \
	done; \

	@echo "Merging PDFs.."
	@test -f $(PDF_MERGER) || (echo "No merge tool available, exiting without merging."; exit 1)
	@$(PDF_MERGER) -o $(ERD_OUTPUT_DIR)/pdf/merged.pdf $(ERD_OUTPUT_DIR)/pdf/*.pdf
	@open $(ERD_OUTPUT_DIR)/pdf/merged.pdf
	@echo "Done."

$(ERD_OUTPUT_DIR)/svg:
	@rm -rf mkdir -p $(ERD_OUTPUT_DIR)/svg
	@mkdir -p $(ERD_OUTPUT_DIR)/svg

$(ERD_OUTPUT_DIR)/pdf:
	@rm -rf $(ERD_OUTPUT_DIR)/pdf
	@mkdir -p $(ERD_OUTPUT_DIR)/pdf