#
# Project Home:
# ============
# https://www.videolan.org/developers/x264.html
#
# Git:
# ======
# https://code.videolan.org/videolan/x264
#
# Clone:
# =====
# git clone https://code.videolan.org/videolan/x264.git
#

url        = https://code.videolan.org/videolan

repo_name  = x264

#
# List of tags to be extracted:
# ============================
#                                               hash | rev | date
#            ----------------------------------------+-----+---------
revisions  = 72d53ab2ac7af24597a824e868f2ef363a22f5d4:0.148.20160917
revisions += 86b71982e131eaa70125f8d0e725fcade9c4c677:0.148.20160920
revisions += 941cae6d1d6d6344c9a1d27440eaf2872b18ca9a:0.164.20221217
revisions += b35605ace3ddf7c1a5d67a2eb553f034aef41d55:0.165.20250917

git_repo   = .git_clone

suffix     = tar.xz

versions   = $(foreach tag, $(revisions), $(shell echo $(tag) | cut -f 2 -d ':'))

tarballs   = $(addsuffix .$(suffix), $(addprefix $(repo_name)-, $(versions)))
sha1s      = $(addsuffix .sha1sum, $(tarballs))

TARGETS = repository_clean

all: $(TARGETS)

.PHONY: downloads_clean repository_clean

$(git_repo):
	@echo -e "\n======= Clone $(repo_name).git repository =======\n"
	@rm -rf $(repo_name)
	@git clone $(url)/$(repo_name).git $(repo_name)
	@touch $@

$(tarballs): $(git_repo)
	@for revision in $(revisions) ; do \
	  hash=`echo $$revision    | cut -f 1 -d ':'` ; \
	  version=`echo $$revision | cut -f 2 -d ':'` ; \
	  if [ ! -f $(repo_name)-$$version.$(suffix) ]; then \
	    echo -e "\n======= Creating '$(repo_name)-$$version.$(suffix)' snapshot =======" ; \
	    ( cd $(repo_name) && \
	      git archive --format=tar --prefix=$(repo_name)-$$version/ $$hash | \
	      xz >../$(repo_name)-$$version.$(suffix) ) ; \
	    tar xJf $(repo_name)-$$version.$(suffix) ; \
	    ( cd $(repo_name)-$$version ; \
	      find . -type f \( -name ".gitlab*" -o -name ".gitignore" \) -exec rm -f {} \; ; \
	    ) ; \
	    tar cJf $(repo_name)-$$version.$(suffix) $(repo_name)-$$version ; \
	    rm -rf $(repo_name)-$$version ; \
	  fi ; \
	done

$(sha1s): %.$(suffix).sha1sum : %.$(suffix)
	@for tarball in $< ; do \
	  echo -e "\n======= Calculation the '$$tarball' sha1sum =======" ; \
	  sha1sum --binary $$tarball > $$tarball.sha1sum ; \
	done

repository_clean: $(sha1s)
	@echo -e "\n======= Remove cloned $(repo_name).git repository =======\n"
	@rm -rf $(git_repo) $(repo_name)

downloads_clean:
	@rm -rf $(tarballs) $(sha1s)
	@rm -rf $(git_repo) $(repo_name)