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# -*- coding: utf-8 -*- |
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"""Automate the creation of development environments""" |
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import argparse |
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import os |
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from pathlib import Path |
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from shutil import copytree |
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import subprocess |
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from typing import Dict |
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from devenv import SCRIPTS_DIR, VERSION |
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from devenv.utils import check_dir, confirm, print_error |
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def copy_scripts( |
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src: Path = Path(__file__).parent / "scripts", |
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dest: Path = SCRIPTS_DIR, |
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overwrite: bool = False, |
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quiet: bool = False, |
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) -> bool: |
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"""Copies scripts from the devenv installation to the local script directory |
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Args: |
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src: The directory to copy to dest. |
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dest: The directory to copy to. Must be a filepath ending in "scripts" |
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overwrite: Overwrite the destination directory if it exists |
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Returns: |
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bool: True for on successful copy, False if the copy fails |
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""" |
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try: |
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copytree(src, dest, dirs_exist_ok=overwrite) |
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if not quiet: |
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print(f"'{src}' copied to '{dest}'!") |
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except FileExistsError: |
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# ask before overwriting |
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if confirm(f"'{dest}' already exists. Overwrite? [Y/n] "): |
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return copy_scripts(src, dest, overwrite=True) |
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return False |
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return True |
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def run_scripts(script_dir: Path, lang: str, name: str, quiet: bool = False) -> bool: |
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"""Runs scripts in a given dir |
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Args: |
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script_dir: The directory to search for scripts |
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lang: The main language of the project |
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name: The name of the project |
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Returns: |
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bool: True for success, False otherwise |
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""" |
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for script in sorted(script_dir.iterdir()): |
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if not os.access(script, os.X_OK): |
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if not quiet: |
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print_error(f"'{script.name}' is not executable! Skipping.", "WARN") |
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continue |
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if script.is_dir(): |
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continue |
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try: |
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if not quiet: |
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print(f"Running '{script.name}'...") |
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subprocess.run([str(script.resolve()), lang, name], check=True) |
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except subprocess.CalledProcessError as err: |
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print_error(f"Error running '{script}'!") |
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print_error(err) |
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return False |
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return True |
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def parse_args() -> argparse.Namespace: |
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"""Parse arguments |
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Returns: |
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argparse.Namespace: a Namespace with all collected arguments |
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""" |
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parser: argparse.ArgumentParser = argparse.ArgumentParser(prog="devenv") |
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parser.add_argument( |
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"lang", nargs="?", help="the language of the project", default=None |
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) |
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parser.add_argument("name", nargs="?", help="the name of the project", default=None) |
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parser.add_argument( |
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"--install_scripts", action="store_true", help="install the builtin scripts" |
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) |
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parser.add_argument( |
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"-q", "--quiet", action="store_true", help="supress non-fatal messages" |
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) |
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parser.add_argument( |
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"--scripts_path", |
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help="the path to a 'scripts' directory", |
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default=SCRIPTS_DIR, |
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type=Path, |
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) |
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parser.add_argument("--version", action="version", version=f"%(prog)s {VERSION}") |
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args = parser.parse_args() |
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# throw error when there are no positional args when needed |
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if not args.install_scripts: |
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if not args.lang and not args.name: |
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print_error("the following arguments are required: lang, name") |
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parser.print_help() |
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raise SystemExit(1) |
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if not args.lang: |
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print_error("the following arguments are required: lang") |
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parser.print_help() |
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raise SystemExit(1) |
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if not args.name: |
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print_error("the following arguments are required: name") |
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parser.print_help() |
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raise SystemExit(1) |
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return args |
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def main(args: argparse.Namespace): |
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"""Run the program according to arguments provided |
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Args: |
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args: A Namespace object of arguments to provide |
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""" |
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if args.install_scripts: |
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if not copy_scripts(dest=args.scripts_path, quiet=args.quiet): |
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print_error("Error copying scripts!") # TODO: test this |
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if not args.lang or args.name: |
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raise SystemExit |
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all_dir: Path = args.scripts_path / "all" |
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lang_dir: Path = args.scripts_path / args.lang |
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all_running: bool = check_dir(all_dir) |
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lang_running: bool = check_dir(lang_dir) |
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script_dirs: Dict[Path, bool] = {all_dir: all_running, lang_dir: lang_running} |
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try: |
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no_run = 0 |
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for directory, to_run in script_dirs.items(): |
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if not to_run: |
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if not args.quiet: |
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print_error( |
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f"Skipping '{directory}', as there are no runnable scripts.", |
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"WARN", |
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) |
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no_run += 1 |
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continue |
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if not run_scripts(directory, args.lang, args.name, args.quiet): |
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raise SystemExit(1) |
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if no_run == 2: |
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err = ( |
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f"Did not run any scripts; both '{all_dir}' and '{lang_dir}' are empty!" |
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) |
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raise SystemError(err) |
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except PermissionError as err: |
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raise PermissionError from err |
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if __name__ == "__main__": |
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main(parse_args()) |
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