# Common GNU Make definitions useful for multiple Makefiles

common_mk_dir := $(patsubst %/,%,$(dir $(lastword $(MAKEFILE_LIST))))

ECLIPSE=$(foreach file,\
                  /opt/ti/ccsv5/eclipse/eclipse \
                  C:/ti/ccsv5/eclipse/eclipsec.exe,\
            $(if $(wildcard $(file)),$(file)))

ifeq ($(OS),Windows_NT)
TMP_WORKSPACE=$(TEMP)/_workspace
else
TMP_WORKSPACE:=$(shell mktemp --dry-run --tmpdir -d rpp-test-sw-workspace.XXXXXXXXXX)
endif


ifeq ($(OS),Windows_NT)
pathconv=$(subst /,\,$1)
mkdir=-mkdir $(subst /,\,$1)
rm=-del /Q $(call pathconv,$1)
rmdir=-rmdir /S /Q $(call pathconv,$1)
cp=copy $(subst /,\,$1) $(subst /,\,$2)
# Always use cmd.exe, ignore sh.exe if there is one
SHELL=cmd.exe
else
pathconv=$1
mkdir=mkdir -p $1
rm=rm -rf $1
rmdir=-rm -rf $1
cp=cp $1 $2
endif

# `make release` can ignore files without certain git attribute
RELEASE_IGNORE_FILES_CMD = $(strip $(if $(RELEASE_ATTR),\
	$(common_mk_dir)/etc/git-ls-files-attr --not $(RELEASE_ATTR),\
	$(if $(filter RELEASE_ATTR,$(.VARIABLES)),,$(error Please specify RELEASE_ATTR variable (it can be empty)))))

# Usage: $(call release_rules,<release_prefix>)
define release_rules
RELEASE_COMMIT = HEAD
RELEASE_PREFIX = $(1)
$$(if $$(RELEASE_PREFIX),,$$(error Call release_rules with prefix as an argument))
ifneq ($(OS),Windows_NT)
RELEASE_VERSION := $$(shell git describe --always $$(RELEASE_COMMIT)|sed -e "s/^[-a-zA-Z_]*//")
endif
RELEASE_BASENAME = $$(RELEASE_PREFIX)-$$(RELEASE_VERSION)

.PHONY: $$(RELEASE_BASENAME).zip .git/info/attributes

.git/info/attributes: A = $$(shell git rev-parse --git-dir)/info/attributes
.git/info/attributes:
# Ensure that attributes do not exist or are generated by us
	test ! -e $$A || head -n 1 $$A | grep -F "Automatically generated (yoo9jei6Ee6Teiti)"
	echo "# Automatically generated (yoo9jei6Ee6Teiti)" > $$A
# Write ignored files there
	for i in `$$(RELEASE_IGNORE_FILES_CMD)`; do echo $$$$i export-ignore >> $$A; echo Not releasing $$$$i; done

$$(RELEASE_BASENAME).zip:
	rm -rf $$@ $$(RELEASE_BASENAME)
	$(MAKE) $$(RELEASE_BASENAME)
	find $$(RELEASE_BASENAME) -type d -empty -print -delete
	zip  -r $$@ $$(RELEASE_BASENAME)

$$(RELEASE_BASENAME):: .git/info/attributes
	git archive --worktree-attributes --prefix=$$@/ $$(RELEASE_COMMIT) | tar xf -

print-release-basename:
	@echo $$(RELEASE_BASENAME)
endef

# Case conversion macros. Taken from
# http://git.buildroot.net/buildroot/tree/package/pkg-utils.mk. This
# is inspired by the 'up' macro from gmsl (http://gmsl.sf.net). It is
# optimised very heavily because these macros are used a lot. It is
# about 5 times faster than forking a shell and tr.
#
# The caseconvert-helper creates a definition of the case conversion macro.
# After expansion by the outer $(eval ), the UPPERCASE macro is defined as:
# $(strip $(eval __tmp := $(1))  $(eval __tmp := $(subst a,A,$(__tmp))) ... )
# In other words, every letter is substituted one by one.
#
# The caseconvert-helper allows us to create this definition out of the
# [FROM] and [TO] lists, so we don't need to write down every substition
# manually. The uses of $ and $$ quoting are chosen in order to do as
# much expansion as possible up-front.
#
# Note that it would be possible to conceive a slightly more optimal
# implementation that avoids the use of __tmp, but that would be even
# more unreadable and is not worth the effort.

[FROM] := a b c d e f g h i j k l m n o p q r s t u v w x y z - .
[TO]   := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ _

define caseconvert-helper
$(1) = $$(strip \
	$$(eval __tmp := $$(1))\
	$(foreach c, $(2),\
		$$(eval __tmp := $$(subst $(word 1,$(subst :, ,$c)),$(word 2,$(subst :, ,$c)),$$(__tmp))))\
	$$(__tmp))
endef

$(eval $(call caseconvert-helper,UPPERCASE,$(join $(addsuffix :,$([FROM])),$([TO]))))
$(eval $(call caseconvert-helper,LOWERCASE,$(join $(addsuffix :,$([TO])),$([FROM]))))