app.py
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	#!/usr/bin/env python3

	# -------------------------------------------------------------
	# Merge dictionaries
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
	# Project: Nasqueron
	# Description: Merge dictionaries from various sources,
	# mainly IDEs, and allow to propagate them.
	# License: BSD-2-Clause
	# -------------------------------------------------------------


	import argparse
	import os
	import sys

	import yaml

	from mergedictionaries import write, output, sources


	# -------------------------------------------------------------
	# Extract words
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def get_dictionary_formatters():
	return {
	"JetBrains": output.jetbrains.dump,
	}


	# -------------------------------------------------------------
	# Configuration
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def get_configuration_path():
	return os.environ["HOME"] + "/.config/merge-dictionaries.conf"


	def parse_configuration():
	try:
	with open(get_configuration_path()) as fd:
	return yaml.safe_load(fd)
	except OSError:
	return {}


	# -------------------------------------------------------------
	# Application entry point
	# - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -


	def parse_arguments():
	parser = argparse.ArgumentParser(description="Merge dictionaries.")

	parser.add_argument(
	"--extract",
	action="store_const",
	dest="task",
	const="extract",
	help="Extract all words from found dictionaries",
	)
	parser.add_argument(
	"--format", action="store", help="Specifies the output format", default="text"
	)

	parser.add_argument(
	"--merge",
	action="store_const",
	dest="task",
	const="merge",
	help="Merge all found dictionaries",
	)

	return parser.parse_args()


	class Application:
	def __init__(self):
	self.context = {"git": {}}

	def run(self):
	args = parse_arguments()

	if args.task is None:
	print("No task has been specified.", file=sys.stderr)
	sys.exit(1)

	self.context["config"] = parse_configuration()
	self.context["args"] = args

	if args.task == "extract":
	self.run_extract_all_words(args.format)
	elif args.task == "merge":
	self.run_merge()

	def get_dictionary_writers(self):
	return [
	lambda words: write.jetbrains.write(words),
	lambda words: write.git.write(
	words, self.context["config"].get("git", []), self.context["git"]
	),
	]

	def run_merge(self):
	words = self.extract_all_words()

	for method in self.get_dictionary_writers():
	method(words)

	self.on_exit()

	def get_words_sources(self):
	return [
	lambda: sources.git.extract_words_from_all_dictionaries(
	self.context["config"].get("git", []), self.context["git"]
	),
	lambda: sources.jetbrains.extract_words_from_all_dictionaries(),
	lambda: sources.hunspell.extract_words_from_all_dictionaries(),
	]

	def extract_all_words(self):
	return sorted(
	{word for method in self.get_words_sources() for word in method()}
	)

	def run_extract_all_words(self, words_format):
	words = self.extract_all_words()

	# Trivial case
	if words_format == "text" or words_format == "hunspell":
	if words_format == "hunspell":
	print(len(words))

	for word in words:
	print(word)

	self.on_exit()
	sys.exit(0)

	# We need a specific formatter
	formatters = get_dictionary_formatters()
	if words_format not in formatters:
	print(f"Unknown format: {words_format}", file=sys.stderr)
	self.on_exit()
	sys.exit(2)

	print(formatters[words_format](words))
	self.on_exit()
	sys.exit(0)

	def on_exit(self):
	"""Events to run before exiting to cleanup resources."""
	sources.git.on_exit(self.context["git"])


	def run():
	app = Application()
	app.run()

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