mirror of
https://github.com/Abdess/retroarch_system.git
synced 2026-10-18 09:23:26 -05:00
85 lines
2.9 KiB
Python
85 lines
2.9 KiB
Python
"""Target scraper plugin discovery module.
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Auto-detects *_targets_scraper.py files and exposes their scrapers.
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"""
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from __future__ import annotations
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import importlib
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import pkgutil
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import re
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from abc import ABC, abstractmethod
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from pathlib import Path
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class BaseTargetScraper(ABC):
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"""Base class for target scrapers."""
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def __init__(self, url: str = "") -> None:
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self.url = url
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@abstractmethod
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def fetch_targets(self) -> dict:
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"""Fetch targets and their core lists. Returns dict matching target YAML format."""
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...
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@staticmethod
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def pinned_revision(platform: str, platforms_dir: str | None = None) -> str:
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"""The upstream revision platforms/<platform>.yml was scraped at.
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A target list describes the same release as the platform's BIOS
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list: read on its own "latest stable tag", a Recalbox 10.2 board list
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filtered 10.1.1 systems. Moving to a new release is a rescrape of the
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platform first.
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"""
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import yaml
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directory = Path(platforms_dir) if platforms_dir else (
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Path(__file__).resolve().parents[3] / "platforms"
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)
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with open(directory / f"{platform}.yml", encoding="utf-8") as handle:
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source = str((yaml.safe_load(handle) or {}).get("source", ""))
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for pattern in (
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r"^https://raw\.githubusercontent\.com/[^/]+/[^/]+/([^/]+)/",
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r"^https://github\.com/[^/]+/[^/]+/(?:blob|tree)/([^/]+)/",
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r"^https://gitlab\.com/.+?/-/(?:raw|blob|tree)/([^/]+)/",
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):
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match = re.match(pattern, source)
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if match:
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return match.group(1)
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raise RuntimeError(
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f"platforms/{platform}.yml names no pinned revision in its source "
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f"({source!r}): rescrape the platform first"
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)
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def write_output(self, data: dict, output_path: str) -> None:
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"""Write target data to YAML file."""
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try:
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import yaml
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except ImportError:
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raise ImportError("PyYAML required: pip install pyyaml")
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from common import write_text_atomic
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write_text_atomic(
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output_path, yaml.dump(data, default_flow_style=False, sort_keys=False)
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)
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_scrapers: dict[str, type] = {}
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def discover_target_scrapers() -> dict[str, type]:
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"""Auto-discover all *_targets_scraper.py modules."""
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if _scrapers:
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return _scrapers
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package_dir = Path(__file__).parent
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for finder, name, ispkg in pkgutil.iter_modules([str(package_dir)]):
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if not name.endswith("_targets_scraper"):
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continue
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module = importlib.import_module(f".{name}", package=__package__)
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platform_name = getattr(module, "PLATFORM_NAME", None)
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scraper_class = getattr(module, "Scraper", None)
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if platform_name and scraper_class:
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_scrapers[platform_name] = scraper_class
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return _scrapers
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