# Licensed under the Apache License, Version 2.0 (the "License")

# This is adopted from https://github.com/tetratelabs/func-e/blob/3df66c9593e827d67b330b7355d577f91cdcb722/Makefile#L60-L76.
# ANSI escape codes. f_ means foreground, b_ background.
# See https://en.wikipedia.org/wiki/ANSI_escape_code#SGR_(Select_Graphic_Rendition)_parameters.
f_black            := $(shell printf "\33[30m")
b_black            := $(shell printf "\33[40m")
f_white            := $(shell printf "\33[97m")
f_gray             := $(shell printf "\33[37m")
f_dark_gray        := $(shell printf "\33[90m")
f_bright_cyan      := $(shell printf "\33[96m")
b_bright_cyan      := $(shell printf "\33[106m")
ansi_reset         := $(shell printf "\33[0m")
ansi_$(name)       := $(b_black)$(f_black)$(b_bright_cyan)$(name)$(ansi_reset)
ansi_format_dark   := $(f_gray)$(f_bright_cyan)%-10s$(ansi_reset) $(f_dark_gray)%s$(ansi_reset)\n
ansi_format_bright := $(f_white)$(f_bright_cyan)%-10s$(ansi_reset) $(f_black)$(b_bright_cyan)%s$(ansi_reset)\n

# This formats help statements in ANSI colors. To hide a target from help, don't comment it with a trailing '##'.
help: ## Describe how to use each target
	@printf "$(ansi_$(name))$(f_white)\n"
	@awk 'BEGIN {FS = ":.*?## "} /^[0-9a-zA-Z_-]+:.*?## / {sub("\\\\n",sprintf("\n%22c"," "), $$2);printf "$(ansi_format_dark)", $$1, $$2}' $(MAKEFILE_LIST)