cli.py
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	# Copyright (C) 2020 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information

	# WARNING: do not import unnecessary things here to keep cli startup time under
	# control
	import os
	from typing import Any, Dict, Optional

	import click
	import yaml

	from swh.core import config
	from swh.core.cli import CONTEXT_SETTINGS
	from swh.core.cli import swh as swh_cli_group

	# All generic config code should reside in swh.core.config
	CONFIG_ENVVAR = "SWH_CONFIG_FILE"
	DEFAULT_CONFIG_PATH = os.path.join(click.get_app_dir("swh"), "global.yml")
	DEFAULT_PATH = os.environ.get(CONFIG_ENVVAR, DEFAULT_CONFIG_PATH)

	DEFAULT_CONFIG: Dict[str, Any] = {
	"web-api": {
	"url": "https://archive.softwareheritage.org/api/1/",
	"auth-token": None,
	}
	}


	CONFIG_FILE_HELP = f"""Configuration file:

	\b
	The CLI option or the environment variable will fail if invalid.
	CLI option is checked first.
	Then, environment variable {CONFIG_ENVVAR} is checked.
	Then, if cannot load the default path, a set of default values are used.
	Default config path is {DEFAULT_CONFIG_PATH}.
	Default config values are:

	\b
	{yaml.dump(DEFAULT_CONFIG)}"""
	SCANNER_HELP = f"""Software Heritage Scanner tools.

	{CONFIG_FILE_HELP}"""


	@swh_cli_group.group(
	name="scanner", context_settings=CONTEXT_SETTINGS, help=SCANNER_HELP,
	)
	@click.option(
	"-C",
	"--config-file",
	default=None,
	type=click.Path(exists=False, dir_okay=False, path_type=str),
	help="""YAML configuration file""",
	)
	@click.pass_context
	def scanner(ctx, config_file: Optional[str]):
	if config_file is None and config.config_exists(DEFAULT_PATH):
	config_file = DEFAULT_PATH

	if config_file is None:
	conf = DEFAULT_CONFIG
	else:
	# read_raw_config do not fail on ENOENT
	if not config.config_exists(config_file):
	raise FileNotFoundError(config_file)
	conf = config.read_raw_config(config.config_basepath(config_file))
	conf = config.merge_configs(DEFAULT_CONFIG, conf)

	ctx.ensure_object(dict)
	ctx.obj["config"] = conf


	@scanner.command(name="scan")
	@click.argument("root_path", required=True, type=click.Path(exists=True))
	@click.option(
	"-u",
	"--api-url",
	default=None,
	metavar="API_URL",
	show_default=True,
	help="URL for the api request",
	)
	@click.option(
	"--exclude",
	"-x",
	"patterns",
	metavar="PATTERN",
	multiple=True,
	help="Exclude directories using glob patterns \
	(e.g., '*.git' to exclude all .git directories)",
	)
	@click.option(
	"-f",
	"--output-format",
	"out_fmt",
	default="text",
	show_default=True,
	type=click.Choice(["text", "json", "ndjson", "sunburst"], case_sensitive=False),
	help="The output format",
	)
	@click.option(
	"-i", "--interactive", is_flag=True, help="Show the result in a dashboard"
	)
	@click.pass_context
	def scan(ctx, root_path, api_url, patterns, out_fmt, interactive):
	"""Scan a source code project to discover files and directories already
	present in the archive"""
	from .scanner import scan

	config = ctx.obj["config"]
	if api_url:
	if not api_url.endswith("/"):
	api_url += "/"
	config["web-api"]["url"] = api_url

	scan(config, root_path, patterns, out_fmt, interactive)


	def main():
	return scanner(auto_envvar_prefix="SWH_SCANNER")


	if __name__ == "__main__":
	main()

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