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filesystem: JsonEditor: use NamedTemporaryFile

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A plain NamedTemporaryFile is sufficient here: we only need a single
file, not a directory to hold it.  Using NamedTemporaryFile is simpler
(no subdirectory to manage) and gives us a .json suffix for free,
which editors use for syntax highlighting.

Change-Id: If3b0bd0fcc90732407dbd03b9cc883f7abeb948e
This commit is contained in:
Vadim Yanitskiy
2026-03-31 05:15:09 +07:00
parent 5e2fd148f8
commit 5828c92c66
1 changed files with 14 additions and 10 deletions
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24
pySim/filesystem.py
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@@ -30,6 +30,7 @@ import tempfile
import json
import abc
import inspect
import os
import cmd2
from cmd2 import CommandSet, with_default_category
@@ -567,7 +568,7 @@ class JsonEditor:
self._cmd = cmd
self._orig_json = orig_json
self._ef = ef
self._tmpdir = None
self._file = None
@staticmethod
def _strip_comments(text: str) -> str:
@@ -606,18 +607,21 @@ class JsonEditor:
text_file.write(f'// {line}\n')
def __enter__(self) -> object:
"""Write JSON + examples to a temp file, run the editor, return parsed result."""
self._tmpdir = tempfile.TemporaryDirectory(prefix='pysim_')
filename = '%s/file' % self._tmpdir.name
with open(filename, 'w') as text_file:
json.dump(self._orig_json, text_file, indent=4, cls=JsonEncoder)
self._append_examples_as_comments(text_file)
self._cmd.run_editor(filename)
with open(filename, 'r') as text_file:
"""Write JSON + examples to a temp file, run the editor, return parsed result.
The temp file is kept on JSONDecodeError so the user can correct and
re-open it manually. It is removed by __exit__() on success."""
self._file = tempfile.NamedTemporaryFile(prefix='pysim_', suffix='.json',
mode='w', delete=False)
json.dump(self._orig_json, self._file, indent=4, cls=JsonEncoder)
self._append_examples_as_comments(self._file)
self._file.close()
self._cmd.run_editor(self._file.name)
with open(self._file.name, 'r') as text_file:
return json.loads(self._strip_comments(text_file.read()))
def __exit__(self, *args):
self._tmpdir.cleanup()
os.unlink(self._file.name)
class CardEF(CardFile):