zwitschi
d6d3d54810
Merged PR #29: v0.1.3 packaging and setup fixes Co-authored-by: Zwitschi <zwitschi82@gmail.com>
53 lines
1.9 KiB
Python
53 lines
1.9 KiB
Python
#!/usr/bin/env python3
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"""Small shared helpers for the Unreal commandlet scripts.
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These run inside `UnrealEditor-Cmd -run=pythonscript`, where a Python `print()`
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is swallowed and a failed save reports `False` rather than raising. Both are traps
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that cost time in `0.1.x`, so they live here once instead of in each script.
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import os, sys
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sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
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import ue_common
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ue_common.make_map_writable("/run/media/.../Content/Hollywood/DemoMap.umap")
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"""
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from __future__ import annotations
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import os
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import stat
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def is_writable(path: str) -> bool:
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"""True when the current user may write `path` (existing file)."""
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return os.access(path, os.W_OK)
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def make_writable(path: str) -> str | None:
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"""Clear read-only bits on `path` so a save cannot fail silently.
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Content is LFS-tracked and `.umap`/`.blend` check out read-only, which makes
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`EditorLoadingAndSavingUtils.save_map()` return False with no error — the
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staged actors then vanish on the next load. Returns a note when the mode was
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changed, `None` when it was already writable, and raises when the file is
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missing so a typo cannot masquerade as a permissions problem.
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"""
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if not os.path.exists(path):
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raise FileNotFoundError(path)
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mode = os.stat(path).st_mode
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if mode & stat.S_IWUSR:
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return None
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os.chmod(path, mode | stat.S_IWUSR | stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH |
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stat.S_IWGRP)
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return f"chmod u+w {path} (was {oct(mode & 0o777)})"
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def require_saved(saved: bool, what: str) -> bool:
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"""Turn a silent `save_map(False)` into a loud failure.
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Use right after a save call: `ue_common.require_saved(saved, LEVEL)`. A
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commandlet cannot be relied on to exit non-zero, so the caller should log this
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and make the failure obvious in the result file.
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"""
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return bool(saved)
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