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import os
import os.path
import datetime
import hashlib
import sys
from urllib.parse import urlparse
from typing import Any, Optional, Callable
import requests
from cachecontrol import CacheControl # type: ignore
from cachecontrol.caches import FileCache # type: ignore
LAUNCHER_MAVEN = "https://files.prismlauncher.org/maven/%s"
def serialize_datetime(dt: datetime.datetime):
if dt.tzinfo is None:
return dt.replace(tzinfo=datetime.timezone.utc).isoformat()
return dt.isoformat()
def cache_path():
if "META_CACHE_DIR" in os.environ:
return os.environ["META_CACHE_DIR"]
return "cache"
def launcher_path():
if "META_LAUNCHER_DIR" in os.environ:
return os.environ["META_LAUNCHER_DIR"]
return "launcher"
def upstream_path():
if "META_UPSTREAM_DIR" in os.environ:
return os.environ["META_UPSTREAM_DIR"]
return "upstream"
def ensure_upstream_dir(path):
path = os.path.join(upstream_path(), path)
if not os.path.exists(path):
os.makedirs(path)
def ensure_component_dir(component_id: str):
path = os.path.join(launcher_path(), component_id)
if not os.path.exists(path):
os.makedirs(path)
def transform_maven_key(maven_key: str):
return maven_key.replace(":", ".")
def replace_old_launchermeta_url(url: str):
o = urlparse(url)
if o.netloc == "launchermeta.mojang.com":
return o._replace(netloc="piston-meta.mojang.com").geturl()
return url
def get_all_bases(cls: type, bases: Optional[list[type]] = None):
bases = bases or []
bases.append(cls)
for c in cls.__bases__:
get_all_bases(c, bases)
return tuple(bases)
def merge_dict(base: dict[Any, Any], overlay: dict[Any, Any]):
for k, v in base.items():
if isinstance(v, dict):
merge_dict(v, overlay.setdefault(k, {})) # type: ignore
else:
if k not in overlay:
overlay[k] = v
return overlay
def default_session():
cache = FileCache(os.path.join(cache_path(), "http_cache"))
sess = CacheControl(requests.Session(), cache)
sess.headers.update({"User-Agent": "PrismLauncherMeta/1.0"})
return sess
def remove_files(file_paths: list[str]) -> None:
for file_path in file_paths:
try:
if os.path.isfile(file_path):
os.remove(file_path)
except Exception as e:
print(e)
def eprint(*args, **kwargs):
print(*args, file=sys.stderr, **kwargs)
def file_hash(
filename: str, hashtype: Callable[[], "hashlib._Hash"], blocksize: int = 65536
) -> str:
hashtype = hashtype()
with open(filename, "rb") as f:
for block in iter(lambda: f.read(blocksize), b""):
hashtype.update(block)
return hashtype.hexdigest()
def get_file_sha1_from_file(file_name: str, sha1_file: str) -> Optional[str]:
if os.path.isfile(sha1_file):
with open(sha1_file, "r") as file:
return file.read()
if not os.path.isfile(file_name):
return None
new_sha1 = file_hash(file_name, hashlib.sha1)
with open(sha1_file, "w") as file:
file.write(new_sha1)
return None
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