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+ +[tool.poetry.dev-dependencies] +black = "^21.8b0" +flake8 = "^3.9.2" +flake8-bugbear = "^21.4.3" + +[build-system] +requires = ["poetry-core>=1.0.0"] +build-backend = "poetry.core.masonry.api" diff --git a/pysheller/__init__.py b/pysheller/__init__.py new file mode 100644 index 0000000..76b9447 --- /dev/null +++ b/pysheller/__init__.py @@ -0,0 +1,3 @@ +from .app import PySheller + +__all__ = ["PySheller"] diff --git a/pysheller/app.py b/pysheller/app.py new file mode 100644 index 0000000..4546483 --- /dev/null +++ b/pysheller/app.py @@ -0,0 +1,69 @@ +from os import listdir, path +from argparse import ArgumentParser +from subprocess import call +import re + + +class PySheller: + def __init__(self, app_name: str, app_description: str, scripts_dir: str) -> None: + self.app = app_name + self.desc = app_description + self.__directory = path.abspath(scripts_dir) + self.commands = self.get_commands() + self.parse_args() + self.run() + + def get_commands(self) -> list: + files = listdir(self.__directory) + cmds = [] + for f in files: + name, ext = path.splitext(f) + if ext in [".sh", ".bash", ".zsh"]: + cmds.append(name) + return cmds + + def get_path(self, command: str) -> str: + return path.join(self.__directory, f"{command}.sh") + + def parse_comments(self, command: str) -> dict: + with open(self.get_path(command), "r") as cf: + lines = cf.read().splitlines() + comments = [ + line.replace("#", "") + for line in lines + if line.startswith("#") and not line.startswith("#!") + ] + + parameters = {"help": None, "args": []} + for key, val in [line.split(" : ") for line in comments]: + key, val = key.strip(), val.strip() + if key == "help": + parameters["help"] = val + elif bool(re.match(r"arg\d+$", key)): + name, desc = [x.strip() for x in val.split(" - ")] + parameters["args"].append({"name": name, "help": desc}) + + return parameters + + def parse_args(self) -> None: + self.arg_parser = ArgumentParser( + prog=self.app, description=self.desc, allow_abbrev=False + ) + subparsers = self.arg_parser.add_subparsers(dest="command", required=True) + + subcommands = {} + for cmd in self.commands: + p = self.parse_comments(cmd) + subcommands[cmd] = subparsers.add_parser(cmd, help=p["help"]) + + if "args" in p: + for arg in p["args"]: + subcommands[cmd].add_argument(arg["name"], help=arg["help"]) + self.args = self.arg_parser.parse_args() + + def run_command(self, command: str) -> None: + args = [x[1] for x in self.args._get_kwargs() if x[1] is not None] + call(self.get_path(args[0]) + " " + " ".join(args[1:]), shell=True) + + def run(self) -> None: + self.run_command(self.args.command)