Extract sources from Feral Interactive "shader_overrides.db"

shaders.py

import os
import sqlite3
import zlib

con = sqlite3.connect("shader_overrides.db")
con.row_factory = sqlite3.Row

cur = con.cursor()
cur.execute("SELECT id, source FROM shaders")

for row in cur:
    data = row["source"]

    # Skip header; 4 bytes decompressed length; 4 bytes unknown
    compressed = data[8:]

    decompressed = zlib.decompress(compressed)

    path = os.path.join("shaders", row["id"])

    f = open(path, "wb")
    f.write(decompressed)
    f.close()