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import functools
import os
import platform
from pathlib import Path
from typing import Callable, Optional
from PyQt6.QtCore import QDir, qDebug, qInfo, qWarning
from PyQt6.QtWidgets import QApplication
import mobase
from . import bg3_utils
_IS_LINUX = platform.system() != "Windows"
class BG3FileMapper(mobase.IPluginFileMapper):
current_mappings: list[mobase.Mapping] = []
_linux_symlinks: list[Path] = []
def __init__(self, utils: bg3_utils.BG3Utils, doc_dir: Callable[[], QDir]):
super().__init__()
self._utils = utils
self.doc_dir = doc_dir
@functools.cached_property
def doc_path(self):
return Path(self.doc_dir().path())
def mappings(self) -> list[mobase.Mapping]:
qInfo("creating custom bg3 mappings")
self.current_mappings.clear()
if _IS_LINUX:
self._cleanup_linux_symlinks()
active_mods = self._utils.active_mods()
if not active_mods:
return []
progress = self._utils.create_progress_window(
"Mapping files to documents folder", len(active_mods) + 1
)
docs_path_mods = self.doc_path / "Mods"
docs_path_se = self.doc_path / "Script Extender"
for mod in active_mods:
modpath = Path(mod.absolutePath())
self.map_files(modpath, dest=docs_path_mods, pattern="*.pak", rel=False)
self.map_files(modpath / "Script Extender", dest=docs_path_se)
if self._utils.convert_yamls_to_json:
self.map_files(modpath / "bin", only_convert=True)
progress.setValue(progress.value() + 1)
QApplication.processEvents()
if progress.wasCanceled():
qWarning("mapping canceled by user")
return self.current_mappings
(self._utils.overwrite_path / "Script Extender").mkdir(
parents=True, exist_ok=True
)
(self._utils.overwrite_path / "Stats").mkdir(parents=True, exist_ok=True)
(self._utils.overwrite_path / "Temp").mkdir(parents=True, exist_ok=True)
(self._utils.overwrite_path / "LevelCache").mkdir(parents=True, exist_ok=True)
(self._utils.overwrite_path / "Stats").mkdir(parents=True, exist_ok=True)
(self._utils.overwrite_path / "Mods").mkdir(parents=True, exist_ok=True)
(self._utils.overwrite_path / "GMCampaigns").mkdir(parents=True, exist_ok=True)
self.map_files(self._utils.overwrite_path)
self.create_mapping(
self._utils.modsettings_path,
self.doc_path
/ "PlayerProfiles"
/ "Public"
/ self._utils.modsettings_path.name,
)
progress.setValue(len(active_mods) + 1)
QApplication.processEvents()
progress.close()
return self.current_mappings
def map_files(
self,
path: Path,
dest: Optional[Path] = None,
pattern: str = "*",
rel: bool = True,
only_convert: bool = False,
):
dest = dest if dest else self.doc_path
dest_func: Callable[[Path], str] = (
(lambda f: os.path.relpath(f, path)) if rel else lambda f: f.name
)
found_jsons: set[Path] = set()
for file in list(path.rglob(pattern)):
if self._utils.convert_yamls_to_json and (
file.name.endswith(".yaml") or file.name.endswith(".yml")
):
converted_path = file.parent / file.name.replace(
".yaml", ".json"
).replace(".yml", ".json")
try:
if not converted_path.exists() or os.path.getmtime(
file
) > os.path.getmtime(converted_path):
import json
import yaml
with open(file, "r") as yaml_file:
with open(converted_path, "w") as json_file:
json.dump(
yaml.safe_load(yaml_file), json_file, indent=2
)
qDebug(f"Converted {file} to JSON")
found_jsons.add(converted_path)
except OSError as e:
qWarning(f"Error accessing file {converted_path}: {e}")
elif file.name.endswith(".json"):
found_jsons.add(file)
elif not only_convert:
self.create_mapping(file, dest / dest_func(file))
if only_convert:
return
for file in found_jsons:
self.create_mapping(file, dest / dest_func(file))
def create_mapping(self, file: Path, dest: Path):
bg3_utils.create_dir_if_needed(dest)
# On Linux, FUSE cannot handle file mappings outside the game's data
# directory. Create real symlinks so the game (via Proton) can find
# mod files in the documents/prefix directory.
if _IS_LINUX and not file.is_dir():
try:
if dest.is_symlink() or dest.exists():
dest.unlink()
dest.symlink_to(file)
self._linux_symlinks.append(dest)
except OSError as e:
qWarning(f"BG3: failed to symlink {dest} -> {file}: {e}")
self.current_mappings.append(
mobase.Mapping(
source=str(file),
destination=str(dest),
is_directory=file.is_dir(),
create_target=True,
)
)
def _cleanup_linux_symlinks(self):
"""Remove symlinks created by previous mappings() calls."""
for link in self._linux_symlinks:
try:
if link.is_symlink():
link.unlink()
except OSError:
pass
self._linux_symlinks.clear()
def cleanup(self):
"""Public cleanup method — call from onFinishedRun."""
if _IS_LINUX:
self._cleanup_linux_symlinks()
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