Build Mozilla Add-on file from directory.

dir2xpi

#!/bin/sh
# 2014 CC0 http://creativecommons.org/publicdomain/zero/1.0/
IFS="$(printf '\n\t')"
[ -f .xpi-include ] && I="-d $(cat .xpi-include)"
[ -f .xpi-exclude ] && X=-x@.xpi-exclude
ls $I | zip -r "$(basename $(pwd)).xpi" -@ -x"*.xpi" $X

xpi.mk

#!/usr/bin/make -f
# 2014 CC0 http://creativecommons.org/publicdomain/zero/1.0/

NAME := $(notdir $(CURDIR))
XPI := $(NAME).xpi
DEFAULT_LOCALE := en
LOCALE_DIR := locale
default_locale = $(LOCALE_DIR)/$(DEFAULT_LOCALE)/
L10N := $(wildcard $(LOCALE_DIR)/*/*)
chrome.manifest.in = $(wildcard chrome.manifest.in)

CONTENT := $(wildcard bootstrap.js) $(wildcard icon.png) $(wildcard icon64.png)\
	install.rdf $(if $(L10N)$(chrome.manifest.in),chrome.manifest)\
	$(shell cat .xpi-include) $(wildcard options.xul)


.PHONY: clean realclean

$(XPI): $(CONTENT) $(L10N)
	zip -r $@ $?

chrome.manifest: $(chrome.manifest.in) $(L10N)
	@echo creating $@ ...
	$(shell sed '/^locale[[:space:]]\+$(NAME)/d' $@.in >$@)
	$(if $(L10N),\
	$(eval locales := $(dir $(L10N)))\
	$(foreach locale,\
	$(findstring $(default_locale),$(locales)) $(filter-out $(default_locale),$(locales)),\
	$(file >>$@,locale	$(NAME)	$(notdir $(locale:%/=%))	$(locale))))

clean:
	$(RM) $(XPI)

realclean: clean
	$(RM) chrome.manifest