Files
libretro/scripts/exporter/systemdat_exporter.py
2026-03-30 15:49:33 +02:00

117 lines
3.7 KiB
Python

"""Exporter for libretro System.dat (clrmamepro DAT format).
Produces a single 'game' block with all ROMs grouped by system,
matching the exact format of libretro-database/dat/System.dat.
"""
from __future__ import annotations
import sys
from pathlib import Path
sys.path.insert(0, str(Path(__file__).resolve().parent.parent))
from scraper.dat_parser import parse_dat
from .base_exporter import BaseExporter
def _slug_to_native(slug: str) -> str:
"""Convert a system slug to 'Manufacturer - Console' format."""
parts = slug.split("-", 1)
if len(parts) == 1:
return parts[0].title()
manufacturer = parts[0].replace("-", " ").title()
console = parts[1].replace("-", " ").title()
return f"{manufacturer} - {console}"
class Exporter(BaseExporter):
"""Export truth data to libretro System.dat format."""
@staticmethod
def platform_name() -> str:
return "retroarch"
def export(
self,
truth_data: dict,
output_path: str,
scraped_data: dict | None = None,
) -> None:
native_map: dict[str, str] = {}
if scraped_data:
for sys_id, sys_data in scraped_data.get("systems", {}).items():
nid = sys_data.get("native_id")
if nid:
native_map[sys_id] = nid
lines: list[str] = [
"clrmamepro (",
'\tname "System"',
'\tdescription "System"',
'\tcomment "System, firmware, and BIOS files used by libretro cores."',
")",
"",
"game (",
'\tname "System"',
]
systems = truth_data.get("systems", {})
for sys_id in sorted(systems):
sys_data = systems[sys_id]
files = sys_data.get("files", [])
if not files:
continue
native_name = native_map.get(sys_id, _slug_to_native(sys_id))
lines.append("")
lines.append(f'\tcomment "{native_name}"')
for fe in files:
name = fe.get("name", "")
if name.startswith("_") or self._is_pattern(name):
continue
rom_parts = [f"name {name}"]
size = fe.get("size")
if size:
rom_parts.append(f"size {size}")
crc = fe.get("crc32", "")
if crc:
rom_parts.append(f"crc {crc.upper()}")
md5 = fe.get("md5", "")
if isinstance(md5, list):
md5 = md5[0] if md5 else ""
if md5:
rom_parts.append(f"md5 {md5}")
sha1 = fe.get("sha1", "")
if isinstance(sha1, list):
sha1 = sha1[0] if sha1 else ""
if sha1:
rom_parts.append(f"sha1 {sha1}")
lines.append(f"\trom ( {' '.join(rom_parts)} )")
lines.append(")")
lines.append("")
Path(output_path).write_text("\n".join(lines), encoding="utf-8")
def validate(self, truth_data: dict, output_path: str) -> list[str]:
content = Path(output_path).read_text(encoding="utf-8")
parsed = parse_dat(content)
exported_names: set[str] = set()
for rom in parsed:
exported_names.add(rom.name)
issues: list[str] = []
for sys_data in truth_data.get("systems", {}).values():
for fe in sys_data.get("files", []):
name = fe.get("name", "")
if name.startswith("_") or self._is_pattern(name):
continue
if name not in exported_names:
issues.append(f"missing: {name}")
return issues