mirror of
https://github.com/unicxrn/prospack.git
synced 2026-10-17 12:01:31 +02:00
56 lines
2.0 KiB
Python
56 lines
2.0 KiB
Python
"""Write a small, reproducible fake PS5 dump for tests and CI (no real game data).
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python engine/make_fake_dump.py OUT_DIR/PPSA00001-app
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"""
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import json
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import os
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import random
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import struct
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import sys
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import zlib
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from pathlib import Path
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def png(path: Path, w: int, h: int, rgb: tuple[int, int, int]) -> None:
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def chunk(tag: bytes, data: bytes) -> bytes:
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return struct.pack(">I", len(data)) + tag + data + struct.pack(">I", zlib.crc32(tag + data) & 0xFFFFFFFF)
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rows = b"".join(b"\0" + bytes(rgb) * w for _ in range(h))
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path.write_bytes(
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b"\x89PNG\r\n\x1a\n"
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+ chunk(b"IHDR", struct.pack(">IIBBBBB", w, h, 8, 2, 0, 0, 0))
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+ chunk(b"IDAT", zlib.compress(rows, 9))
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+ chunk(b"IEND", b"")
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)
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def main() -> int:
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root = Path(sys.argv[1])
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title = root.name.split("-")[0] if root.name[:4].isalpha() else "PPSA00001"
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rnd = random.Random(1234)
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(root / "sce_sys").mkdir(parents=True, exist_ok=True)
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(root / "fakelib").mkdir(exist_ok=True)
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(root / "data/prein/bg").mkdir(parents=True, exist_ok=True)
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(root / "sce_sys/param.json").write_text(json.dumps({
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"titleId": title,
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"contentVersion": "01.000.000",
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"localizedParameters": {"defaultLanguage": "en-US", "en-US": {"titleName": "TEST GAME"}},
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}))
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png(root / "sce_sys/icon0.png", 512, 512, (40, 90, 220))
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png(root / "sce_sys/pic0.png", 1280, 720, (30, 30, 60))
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(root / "eboot.bin").write_bytes(rnd.randbytes(2 * 1024 * 1024))
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(root / "fakelib/libSceAmpr.sprx").write_bytes(rnd.randbytes(64 * 1024))
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for i in range(300):
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(root / f"data/prein/bg/small_{i}.txt").write_bytes(b"a" * rnd.randrange(1, 90000))
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with open(root / "data/prein/bg/big_text.bin", "wb") as f:
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line = b"level data compressible\n"
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f.write(line * (40 * 1024 * 1024 // len(line)))
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(root / "data/prein/bg/big_random.bin").write_bytes(rnd.randbytes(8 * 1024 * 1024))
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print(root)
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return 0
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if __name__ == "__main__":
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sys.exit(main())
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