PixelLauncher 2.1.0 — стабильная сборка
Офлайн-лаунчер Minecraft: аккаунты без Microsoft, установка версий и лоадеров (Fabric, Quilt, Forge, NeoForge), каталог модпаков Modrinth, поиск и обновление модов, разбор вылетов, системный трей, автозагрузка, плагины, прокси и зеркала.
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"""Скачивание файлов игры: client jar, библиотеки, нативы, ассеты."""
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import json
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import os
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import shutil
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import zipfile
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from concurrent.futures import as_completed, ThreadPoolExecutor
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from . import http
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LIB_WORKERS = 16
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ASSET_WORKERS = 32
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ASSET_BASE = "https://resources.download.minecraft.net/"
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def _mirror_urls(mirrors, default_base, url):
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"""Кандидаты для скачивания: зеркала (если подходят) + официальный URL."""
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urls = []
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for m in mirrors or []:
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m = (m or "").strip().rstrip("/")
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if m and url.startswith(default_base):
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urls.append(m + "/" + url[len(default_base):])
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urls.append(url)
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return urls
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def _download_many(tasks, workers=LIB_WORKERS, progress=None, verify=False,
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cancel=None):
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"""tasks: список (urls, path, sha1, size) — urls по приоритету (зеркала).
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progress(done, total). verify=True — полная проверка SHA-1.
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cancel — threading.Event: досрочная оставка (http.Cancelled).
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"""
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total = len(tasks)
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errors = []
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if not tasks:
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return errors
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def work(task):
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urls, path, sha1, size = task
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last = None
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for url in urls:
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if cancel is not None and cancel.is_set():
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raise http.Cancelled()
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try:
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return http.download_file(url, path, sha1, size, verify,
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cancel=cancel)
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except http.Cancelled:
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raise
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except Exception as e: # noqa: BLE001
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last = e
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return RuntimeError(f"{urls[-1] if urls else '?'}: {last}")
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with ThreadPoolExecutor(max_workers=workers) as ex:
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futs = [ex.submit(work, t) for t in tasks]
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done = 0
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for fut in as_completed(futs):
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if cancel is not None and cancel.is_set():
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for f2 in futs:
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f2.cancel()
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raise http.Cancelled()
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done += 1
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try:
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res = fut.result()
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if isinstance(res, Exception):
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errors.append(str(res))
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except http.Cancelled:
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raise
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except Exception as e: # noqa: BLE001
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errors.append(str(e))
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if progress:
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progress(done, total)
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return errors
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def extract_natives(version, libs_dir):
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"""Распаковывает natives-jar'ы в папку нативов версии.
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Если набор jar'ов не менялся (сигнатура в .stamp), распаковка
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пропускается — на повторных запусках это экономит время.
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"""
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dest = version.natives_dir()
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os.makedirs(dest, exist_ok=True)
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stamp_path = os.path.join(dest, ".stamp")
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jars, sig_parts = [], []
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for rel in version.natives_jars:
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jar = os.path.join(libs_dir, *rel.split("/"))
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if not os.path.isfile(jar):
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continue
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jars.append(jar)
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st = os.stat(jar)
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sig_parts.append(f"{rel}:{st.st_size}:{int(st.st_mtime)}")
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sig = ";".join(sig_parts)
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try:
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with open(stamp_path, encoding="utf-8") as f:
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if f.read() == sig:
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return dest
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except OSError:
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pass
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for jar in jars:
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try:
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with zipfile.ZipFile(jar) as z:
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for info in z.infolist():
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name = info.filename
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if name.endswith("/") or name.upper().startswith("META-INF/"):
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continue
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target = os.path.join(dest, *name.split("/"))
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os.makedirs(os.path.dirname(target), exist_ok=True)
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with z.open(info) as src, open(target, "wb") as dst:
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shutil.copyfileobj(src, dst)
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except (zipfile.BadZipFile, OSError):
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continue
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try:
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with open(stamp_path, "w", encoding="utf-8") as f:
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f.write(sig)
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except OSError:
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pass
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return dest
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def _ensure_assets(version, progress=None, verify=False, cancel=None,
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mirrors=None):
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ai = version.asset_index
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if not ai.get("url"):
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return
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assets = version.assets_dir()
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idx_id = ai.get("id", "legacy")
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idx_path = os.path.join(assets, "indexes", idx_id + ".json")
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http.download_file(ai["url"], idx_path, ai.get("sha1"), ai.get("size"),
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cancel=cancel)
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with open(idx_path, encoding="utf-8") as f:
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index = json.load(f)
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base = ASSET_BASE
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tasks = []
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objects = index.get("objects") or {}
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for name, obj in objects.items():
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h = obj["hash"]
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url = base + h[:2] + "/" + h
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path = os.path.join(assets, "objects", h[:2], h)
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tasks.append((_mirror_urls(mirrors, base, url), path, h,
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obj.get("size")))
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errors = _download_many(tasks, workers=ASSET_WORKERS, progress=progress,
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verify=verify, cancel=cancel)
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# Виртуальные ассеты для старых версий (1.6 и раньше: virtual / map_to_resources)
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if index.get("virtual"):
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vdir = os.path.join(assets, "virtual", idx_id)
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for name, obj in objects.items():
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src = os.path.join(assets, "objects", obj["hash"][:2], obj["hash"])
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dst = os.path.join(vdir, *name.split("/"))
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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if not os.path.isfile(dst):
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try:
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shutil.copy2(src, dst)
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except OSError:
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pass
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if index.get("map_to_resources"):
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rdir = os.path.join(version.game_dir, "resources")
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for name, obj in objects.items():
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src = os.path.join(assets, "objects", obj["hash"][:2], obj["hash"])
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dst = os.path.join(rdir, *name.split("/"))
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os.makedirs(os.path.dirname(dst), exist_ok=True)
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if not os.path.isfile(dst):
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try:
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shutil.copy2(src, dst)
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except OSError:
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pass
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return errors
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def ensure(version, progress=None, asset_progress=None, log=None, verify=False,
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cancel=None, asset_mirrors=None, lib_mirrors=None):
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"""Скачивает всё необходимое для запуска. Возвращает (errors, natives_dir).
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verify=True — полная проверка SHA-1 уже скачанных файлов
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(иначе достаточно совпадения размера).
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cancel — threading.Event: досрочная остановка (бросает http.Cancelled).
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asset_mirrors / lib_mirrors — списки зеркал (пусто = официальные серверы).
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"""
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libs_dir = version.libraries_dir()
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errors = []
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lib_base = "https://libraries.minecraft.net/"
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tasks = []
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if version.client_url:
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tasks.append(([version.client_url], version.client_jar_path(),
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version.client_sha1, version.client_size))
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for lib in version.libraries:
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path = os.path.join(libs_dir, *lib["path"].split("/"))
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tasks.append((_mirror_urls(lib_mirrors, lib_base, lib["url"]), path,
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lib.get("sha1"), lib.get("size")))
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if log:
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log(f"Скачивание библиотек ({len(tasks)} шт.)...")
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errors += _download_many(tasks, progress=progress, verify=verify,
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cancel=cancel)
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natives = extract_natives(version, libs_dir)
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lf = version.logging.get("file") or {}
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if lf.get("url") and lf.get("id"):
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cfg_dir = os.path.join(version.assets_dir(), "log_configs")
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try:
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http.download_file(lf["url"], os.path.join(cfg_dir, lf["id"]),
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lf.get("sha1"), lf.get("size"), cancel=cancel)
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except http.Cancelled:
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raise
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except Exception as e: # noqa: BLE001
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errors.append(f"log config: {e}")
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if version.asset_index.get("url"):
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if log:
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log("Скачивание ассетов...")
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errors += _ensure_assets(version, progress=asset_progress,
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verify=verify, cancel=cancel,
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mirrors=asset_mirrors) or []
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return errors, natives
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