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# Makefile --- 10sr make dotfiles
# 2014, 10sr. Unlicensed <http://unlicense.org>

# TODO: Add help message

# Variable definitions

dotfiles_url_base := https://raw.githubusercontent.com/10sr/dotfiles/master
use_git ?= t
git_auth ?= t

dotfiles_git_path := 10sr/dotfiles.git

ifneq (,$(git_auth))
$(warning 'git_auth' is not empty. Use git repository with push right.)
dotfiles_git := git@github.com:$(dotfiles_git_path)
else
$(warning 'git_auth' is empty. Use public read-only git repository.)
dotfiles_git := https://github.com/$(dotfiles_git_path)
endif

current_origin_url := $(shell git config remote.origin.url)

ifeq (,$(dotfiles_dir))

  ifneq (,$(findstring $(dotfiles_git_path),$(current_origin_url)))
    $(warning Currently in dotfiles repository)
    dotfiles_dir := $(PWD)

  else
    # Current directory is not 10sr/dotfiles.git reposioty
    ifeq (,$(DOTFILES_DIR))
      $(warning Neigher 'DOTFILES_DIR' nor 'dotfiles_dir' is defined)
      $(warning Use default value)
      dotfiles_dir := $(HOME)/10sr_dotfiles
    else
      # dotfiles_dir is empty but DOTFILES_DIR has a value
      $(warning 'dotfiles_dir' is set from 'DOTFILES_DIR')
      dotfiles_dir := $(DOTFILES_DIR)
    endif

  endif

endif

$(warning dotfiles_dir: $(dotfiles_dir))

dotfiles_home_dir := $(dotfiles_dir)/.home
ifeq ($(home),)
ifeq ($(global_home),)
$(warning 'home' not set and 'global_home' is empty)
# TODO: What this should be?
home := $(dotfiles_home_dir)
else
home := $(HOME)
endif
endif
$(warning home: $(home))

localdir := $(home)/.local
vardir := $(home)/.var
bindir := $(localdir)/bin
directories := $(dotfiles_dir) $(home) $(localdir) $(vardir) $(bindir) \
	$(home)/.emacs.d

current := $(shell date)
uname := $(shell uname)

# Remove zsh from this list because it causes failure of travis test
# Message:
# Segmentation fault (core dumped)
shrc_loadables := sh bash # zsh

emacs ?= $(shell which emacs 2>/dev/null)
git ?= $(shell which git 2>/dev/null)
curl ?= $(shell which curl 2>/dev/null)
grep ?= GREP_OPTIONS= $(shell which grep 2>/dev/null)

ifeq ($(emacs),)
$(warning Emacs program not found)
endif

files := Makefile emacs.el profile shrc tmux.conf vimrc _keysnail.js

# Targets

default: help

tests := test-el
test: test-syntax $(tests)  ## Execute some tests

test_syntaxes := test-syntax-el test-syntax-sh
test-syntax: $(test_syntaxes)  ## Execute syntax check

setups := setup-darwin setup-directories setup-emacs setup-gitconf \
	setup-repository setup-rc
# `make setup` to setup these all sounds to be too match
setup-all: $(setups)  ## Run initialization tasks

runs := run-emacs run-bash run-zsh

# Alias for test
check: test

# Similarly, check-syntax is test-syntax
check-syntax: test-syntax

.PHONY: all default clean \
	test check $(tests) \
	test-syntax check-syntax $(test_syntaxes)\
	setup-all $(setups)

$(directories):
	test -d "$@" || mkdir -vp "$@"

# System detection
# ================

# Is this usefull? Just checking uname is not enough?

ismsys :=
iscygwin :=
iswindows :=

isdarwin :=
isfreebsd :=
isbsd :=

islinux :=

ifneq (,$(findstring MINGW,$(uname)))
ismsys := t
endif
ifneq (,$(findstring CYGWIN,$(uname)))
iscygwin := t
endif
ifneq (,$(ismsys)$(iscygwin))
iswindows := t
endif

ifneq (,$(findstring Darwin,$(uname)))
isdarwin := t
endif
ifneq (,$(findstring FreeBSD,$(uname)))
isfreebsd := t
endif
ifneq (,$(isdarwin)$(isfreebsd))
isbsd := t
endif

ifneq (,$(findstring Linux,$(uname)))
islinux := t
endif

# Help
# ====

help:
	@echo "10sr Makefile" | (figlet || cat) | (lolcat || cat)
	@grep -E '^[a-zA-Z_-]+:.*?## .*$$' $(MAKEFILE_LIST) | \
		awk 'BEGIN {FS = ":.*?## "}; {printf "\033[36m%-30s\033[0m %s\n", $$1, $$2}'

# Clean
# =====

# Usage: Define a target as a dependency for clean and .PHONY

clean: clean-home
.PHONY: clean-home

clean-home:
	$(RM) -r $(dotfiles_home_dir)

# preparing files
# ===============

files_fullpath := $(files:%=$(dotfiles_dir)/%)
fetch_files := $(files:%=fetch-%)
.PHONY: $(fetch_files)

$(fetch_files): fetch-%: $(dotfiles_dir)
	curl --url $(dotfiles_url_base)/$* --output $@

ifeq (,$(use_git))
$(files_fullpath): $(dotfiles_dir)/%: fetch-%
$(warning 'use_git' is empty. Use curl to fetch files)
else
$(warning 'use_git' is not empty. Use git to retrieve files)
$(files_fullpath): setup-repository
	test -f "$@"
endif

# setups
# ======

# setup git repository
# --------------------

setup-repository: $(dotfiles_dir)/.git

$(dotfiles_dir)/.git:
ifeq (,$(git))
	false "Git not installed"
endif
	$(git) clone $(dotfiles_git) $(dotfiles_dir)

# darwin setup
# ------------

setup_darwins := setup-darwin-defaults setup-darwin-daemon
setup-darwin: $(setup_darwins)
.PHONY: $(setup_darwins)

setup-darwin-defaults:
	# http://appdrill.net/60641/mac-boot-mute.html
	#sudo nvram SystemAudioVolume=%80

	# add quit entry in menu
	defaults write com.apple.finder QuitMenuItem -bool YES
	# show full path on titlebar
	defaults write com.apple.finder _FXShowPosixPathInTitle -bool YES
	# do not show desktop icons
	defaults write com.apple.finder CreateDesktop -boolean false

	killall Finder

	# disable dashboard
	#defaults write com.apple.dashboard mcx-disabled -bool YES

setup-darwin-daemon:
	test "`launchctl getenv LC_ALL`" = C || sudo launchctl setenv LC_ALL C
	if ! (launchctl list | grep com.apple.locate) >/dev/null ;\
	then \
		sudo launchctl load -w /System/Library/LaunchDaemons/com.apple.locate.plist ;\
	fi

# emacs setup
# -----------

setup-emacs: $(dotfiles_dir)/emacs.el
	test -n "$(emacs)" && $(emacs) -q --batch \
		--eval "(setq user-emacs-directory \"$(home)/.emacs.d/\")" \
		--load $< \
		-f my-auto-install-package

# git config setup
# ----------------

ifneq (,$(git))
git_conf := $(git) config --global
endif

xz := $(shell which xz 2>/dev/null)

setup-gitconf:  ## Set git configurations
ifeq (,$(git))
$(warnning "Git program not found")
else
	$(git_conf) user.name '10sr'
	$(git_conf) user.email '8.slashes@gmail.com'

	$(git_conf) core.autocrlf false
	$(git_conf) core.excludesfile '~/.gitignore'
	$(git_conf) core.commentChar ";"
	$(git_conf) color.ui auto
	$(git_conf) status.relativePaths false
	$(git_conf) status.showUntrackedFiles normal
	$(git_conf) log.date iso
	$(git_conf) fetch.prune true
	$(git_conf) fetch.pruneTags true
	$(git_conf) push.default current
	$(git_conf) pull.ff only
	$(git_conf) rebase.stat true
	$(git_conf) rebase.missingCommitsCheck error
ifneq (,$(xz))
	$(git_conf) tar.txz.command "xz -c"
endif

	$(git_conf) alias.graph "log --graph --date-order -C -M --pretty=tformat:\"%C(green)%h%C(reset) %C(white)%ad%C(reset) %C(red)%an%C(reset)%C(yellow)%d%C(reset) %C(white bold)%s%C(reset)\" --date=short -n 499"
	$(git_conf) alias.st "status -s -b"
	$(git_conf) alias.b "branch"
	$(git_conf) alias.sb "show-branch"
	$(git_conf) alias.ci "commit --verbose --allow-empty"
	# TODO: Try rebase --interactive --autosquash
	$(git_conf) alias.cf "commit --verbose --fixup=HEAD -m WIP"
	$(git_conf) alias.co "checkout"
	$(git_conf) alias.cim "commit --verbose -m"
	$(git_conf) alias.di "diff --color"
	$(git_conf) alias.me "merge --no-ff --stat --verbose"
	$(git_conf) alias.ffme "merge --ff-only --stat --verbose"
	$(git_conf) alias.gr "grep -n"
	$(git_conf) alias.ls "ls-files"
	# $(git_conf) alias.ls "ls-files -v --full-name"
	# $(git_conf) alias.ls "status -u -s ."
	$(git_conf) alias.sl "!sl"
	# $(git_conf) alias.my-ls "ls-files | xargs ls"
	# $(git_conf) alias.ll "!git ls-files | xargs ls -l -CFG --color=auto --time-style=long-iso"
	$(git_conf) alias.addi "add -i"
	# Add patch to index
	$(git_conf) alias.ap "apply --cached"
	$(git_conf) alias.clean-p "diff --quiet"
	$(git_conf) alias.echo-ref "for-each-ref --format='%(refname:short)'"

	$(git_conf) alias.todo "grep -nH -E -i 'todo:|note:|fixme:'"

	$(git_conf) alias.stashsnap '! gitdir="`git rev-parse --git-dir`" && : >>"$$gitdir"/logs/refs/snapshot && cmt=`git stash create` && test -n "$$cmt" && git update-ref refs/snapshot $$cmt && echo Snapshot created: $$cmt'
	#$(git_conf) alias.snap '! gitdir="`git rev-parse --git-dir`" && export GIT_INDEX_FILE="$$gitdir"/snapshot.index && cp -pf "$$gitdir"/index "$$GIT_INDEX_FILE" && git add -Av && : >>"$$gitdir"/logs/refs/snapshot && git update-ref refs/snapshot $$(git commit-tree $$(git write-tree) -m Snapshot -p HEAD) && git show --stat snapshot'
	$(git_conf) alias.snap snapshot

	$(git_conf) alias.setcmd '! f(){ git config alias.$$1 "! $$2"; }; f'
	$(git_conf) alias.make '!make'
	$(git_conf) alias.e '!env'  # Run command in repository root

	#$(git_conf) alias.wc "!git ls-files -z | xargs -0 wc"
	# $(git_conf) push.default "simple"
ifneq (,$(iswindows))
	$(git_conf) core.fileMode false
endif
endif

# setup rc files
# --------------

# Generate load codes from the files themselves.
# Load codes are defined by following SETUP_LOAD: indicator.
# String DOTFILES_DIR in the load codes will be replaced into the value of
# $(dotfiles_dir).
# The load codes are appended to $(topfile).

setup_rcs := setup-rc-vimrc setup-rc-tmux.conf setup-rc-emacs.el
setup-rc: $(setup_rcs)  ## Setup initialize files
.PHONY: $(setup_rcs)

setup-rc-vimrc: $(home)/.vimrc
setup-rc-tmux.conf: $(home)/.tmux.conf
setup-rc-emacs.el: $(home)/.emacs.d/init.el

$(home)/.emacs.d/init.el: $(dotfiles_dir)/emacs.el $(home) $(home)/.emacs.d
$(home)/.vimrc: $(dotfiles_dir)/vimrc $(home)
$(home)/.tmux.conf: $(dotfiles_dir)/tmux.conf $(home)

command_extract_setup_load := $(grep) -e 'SETUP_LOAD: ' | \
		sed -e 's/^.*SETUP_LOAD: //' -e 's|DOTFILES_DIR|$(dotfiles_dir)|'

setup_rc_marker := ADDED BY 10sr_dotfiles/Makefile

$(home)/.emacs.d/init.el $(home)/.vimrc $(home)/.tmux.conf:
	set -x; if ! $(grep) "$(setup_rc_marker)" "$@"; \
	then \
		(echo $(line_comment) $(setup_rc_marker); cat "$<" | $(command_extract_setup_load)) \
			| tee -a "$@"; \
	fi

$(home)/.emacs.d/init.el: line_comment := ';;'
$(home)/.vimrc: line_comment := '"'
$(home)/.tmux.conf: line_comment := '\#'

# run
# ===

run-emacs: $(home)/.emacs.d/init.el
	test -n "$(emacs)" && $(emacs) -q \
		--eval "(setq user-emacs-directory \"$(home)/.emacs.d/\")" --load "$<"

# test
# ====

test_els := test-el-emacs.el
test-el: $(test_els)
.PHONY: $(test_els)

$(test_els): test-el-%: $(dotfiles_dir)/% $(home)
	test -n "$(emacs)" && \
		$(emacs) -Q -batch -f batch-byte-compile $<
	# EMACS_EL_DRY_RUN=t $(emacs) -q --debug-init --batch \
	# 	--eval "(setq debug-on-error t)" \
	# 	--eval "(setq user-emacs-directory \"$(home)/.emacs.d/\")" \
	# 	--load $<c --kill

# test syntax
# ===========

test_syntax_shs := test-syntax-shrc test-syntax-profile
test-syntax-sh: $(test_syntax_shs)
.PHONY: $(test_syntax_shs)

$(test_syntax_shs): test-syntax-%: $(dotfiles_dir)/%
	sh -ec 'for sh in $(shrc_loadables); do $$sh -n $<; done'

test_syntax_els := test-syntax-emacs.el
test-syntax-el: $(test_syntax_els)
.PHONY: $(test_syntax_els)

sexp_elisp_syntax_check := \
	(with-temp-buffer \
		(emacs-lisp-mode) \
		(insert-file-contents file) \
		(condition-case err \
			(check-parens) \
			(user-error \
				(error (format "%s:%d:%d:Unmatched brancet or quote" \
								file \
								(line-number-at-pos) \
								(- (point) (point-at-bol)))))))

$(test_syntax_els): test-syntax-%: $(dotfiles_dir)/%
	test -n "$(emacs)" && \
		$(emacs) -Q --debug-init --batch \
		--eval '(let ((file "$<")) $(sexp_elisp_syntax_check))' --kill