# Copyright (C) 2008-2010 by Oleksandr Gavenko <gavenkoa@gmail.com>

#

# You can do anything with this file without any warranty.

################################################################

# Standard Makefile settings.

SHELL = /bin/sh

export PATH := /bin:/usr/bin:${PATH}

# Disable built in pattern rules.

MAKEFLAGS += -r

# Disable built in variables.

MAKEFLAGS += -R

# Disable built in suffix rules.

.SUFFIXES:

# Delete target file if command fails.

.DELETE_ON_ERROR:

# Default target.

.DEFAULT_GOAL = all

################################################################

# Helper definition.

which = $(firstword $(foreach item,$(subst :, ,$(PATH)),$(wildcard $(item)/$1)))

curdir := $(realpath .)

################################################################

# Platform/environment definition.

ifeq '' '$(HOME)'

  $(error Home env var not set!)

endif

host_os = unix

ifneq '' '$(COMSPEC)'

  ifneq '' '$(WINDIR)'

    # Probably under Windows.

    host_os = windows

  endif

endif

################################################################

# Installation directories and files.

emacsdir := $(HOME)/.emacs.d

mylispdir := $(emacsdir)/my

# Compatibility version.

COMPAT_VER := 1

COMPAT_FILE := $(emacsdir)/.emacs-ver

################################################################

# Build tool definition/switches.

EMACS = emacs

# I prefer native Windows Emacs, so use it if available.

ifeq 'windows' '$(host_os)'

  ifneq '' '$(call which,runemacs.exe)'

    EMACS = runemacs

  endif

endif

RST2HTML = rst2html

ifeq '$(host_os)' 'windows'

  RST2HTML = rst2html.py

endif

################################################################

# Proj dirs/files.

EL_FILES := $(wildcard *.el)

RST_FILES := $(wildcard *.rst)

HTML_FILES := $(RST_FILES:.rst=.html)

################################################################

# Targets.

.PHONY: all

all: install

################################################################

# Install/uninstall targets.

.PHONY: check-install-comapt

check-install-comapt:

	[ -f $(COMPAT_FILE) ] || { echo $(COMPAT_FILE) missing, run '"make upgrade"' first; false; }

	read ver <$(COMPAT_FILE); if [ "$$ver" -ne $(COMPAT_VER) ]; then echo "*** "Run '"make upgrade"' first" ***"; exit 1; fi

.PHONY: check-upgrade-comapt

check-upgrade-comapt:

	\

if [ -f $(COMPAT_FILE) ]; then \

  read ver <$(COMPAT_FILE); \

  if [ "$$ver" -gt $(COMPAT_VER) ]; then \

    echo "*** "Project is too old, downgrade is not possible..." ***"; \

    exit 1; \

  fi; \

fi

.PHONY: upgrade

upgrade: check-upgrade-comapt

	\

mkdir -p $(mylispdir); \

rm -f $(emacsdir)/autoload-my.el; \

rm -f ~/.emacs; \

[ -d $(emacsdir)/my-lisp ] && mv $(emacsdir)/my-lisp $(mylispdir); \

for f in .emacs-my .emacs-custom.el .emacs-pre .emacs-post .emacs-places .emacs.desktop .emacs-places .emacs-autogen .ido.last .recentf; do \

  if [ -f ~/$$f ]; then [ -f $(emacsdir)/$$f ] && mv ~/$$f $(emacsdir)/$$f.1 || mv ~/$$f $(emacsdir); fi; \

  if [ -f $(mylispdir)/$$f ]; then [ -f $(emacsdir)/$$f ] && mv $(mylispdir)/$$f $(emacsdir)/$$f.2 || mv $(mylispdir)/$$f $(emacsdir); fi; \

done; \

for f in `find $(mylispdir) -maxdepth 1 -type f -name '.emacs?*'`; do \

  fn=$${f##*/}; \

  [ -f $(emacsdir)/$$fn ] && mv $$f $(emacsdir)/$$fn.3 || mv $$f $(emacsdir); \

done; \

if [ -f ~/.emacs.bmk ]; then [ -f $(emacsdir)/bookmarks ] && mv ~/.emacs.bmk $(emacsdir)/bookmarks.$$$$ || mv ~/.emacs.bmk $(emacsdir)/bookmarks; fi; \

if [ -f $(emacsdir)/.emacs.bmk ]; then [ -f $(emacsdir)/bookmarks ] && mv $(emacsdir)/.emacs.bmk $(emacsdir)/bookmarks.$$$$ || mv $(emacsdir)/.emacs.bmk $(emacsdir)/bookmarks; fi; \

echo $(COMPAT_VER) >$(COMPAT_FILE); \

make install

.PHONY: install-all

install-all: install

	cp .emacs-pre $(emacsdir)/.emacs-pre

	cp .emacs-post $(emacsdir)/.emacs-post

define cleanup_mylispdir

  find $(mylispdir) -type f '(' -name '*.el' -o -name '*.elc' ')' -delete

endef

.PHONY: install

install: check-install-comapt

	mkdir -p $(mylispdir)

	$(cleanup_mylispdir)

	for file in .emacs-pre .emacs-post; do \

		[ -f $(emacsdir)/$$file ] || cp $$file $(emacsdir)/$$file; \

	done

	cp .emacs $(emacsdir)/init.el

	cp .emacs-defs .emacs-my $(emacsdir)

	mkdir -p $(emacsdir)/server $(HOME)/.gnus/scores

	cp all.SCORE $(HOME)/.gnus/scores

	cp -f $(EL_FILES) $(mylispdir); \

	./.emacs-autogen.sh $(emacsdir)/.emacs-autogen; \

	$(EMACS) -Q --batch --eval='(let ((generated-autoload-file "$(mylispdir)/loaddefs.el")) (update-directory-autoloads "$(mylispdir)"))'

	\

$(EMACS) -Q --batch --eval='(load "$(curdir)/.emacs-defs")' --eval='(my-load.add-my-loadpaths)' --eval='(load "$(emacsdir)/.emacs-pre")' \

  --eval='(byte-compile-file "$(emacsdir)/.emacs-my")' --eval='(byte-force-recompile "$(mylispdir)")'

	cp -r srecode/ $(HOME)/.emacs.d/

.PHONY: uninstall

uninstall:

	rm -f $(patsubst %,$(emacsdir)/%, init.el .emacs-defs .emacs-my .emacs-autogen)

	$(cleanup_mylispdir)

	rm -f -r $(emacsdir)/srecode

.PHONY: tar

tar:

	tar cf dot-emacs.tar .emacs .emacs-my

################################################################

# Documentation targets.

.PHONY: html

html: $(HTML_FILES)

$(HTML_FILES): %.html: %.rst

	$(RST2HTML) --stylesheet=rst.css $*.rst $@

################################################################

# Clean targets.

.PHONY: distclean

distclean: clean

.PHONY: clean

clean:

	rm -f dot-emacs.tar $(HTML_FILES)