mirror of
https://github.com/clinton-hall/nzbToMedia.git
synced 2024-11-14 17:40:24 -08:00
56c6773c6b
Updates colorama to 0.4.6 Adds confuse version 1.7.0 Updates jellyfish to 0.9.0 Adds mediafile 0.10.1 Updates munkres to 1.1.4 Updates musicbrainzngs to 0.7.1 Updates mutagen to 1.46.0 Updates pyyaml to 6.0 Updates unidecode to 1.3.6
127 lines
4.3 KiB
Python
127 lines
4.3 KiB
Python
# This file is part of beets.
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# Copyright 2016, Adrian Sampson.
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#
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# Permission is hereby granted, free of charge, to any person obtaining
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# a copy of this software and associated documentation files (the
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# "Software"), to deal in the Software without restriction, including
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# without limitation the rights to use, copy, modify, merge, publish,
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# distribute, sublicense, and/or sell copies of the Software, and to
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# permit persons to whom the Software is furnished to do so, subject to
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# the following conditions:
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#
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# The above copyright notice and this permission notice shall be
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# included in all copies or substantial portions of the Software.
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"""Allows inline path template customization code in the config file.
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"""
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import traceback
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import itertools
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from beets.plugins import BeetsPlugin
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from beets import config
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FUNC_NAME = '__INLINE_FUNC__'
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class InlineError(Exception):
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"""Raised when a runtime error occurs in an inline expression.
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"""
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def __init__(self, code, exc):
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super().__init__(
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("error in inline path field code:\n"
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"%s\n%s: %s") % (code, type(exc).__name__, str(exc))
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)
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def _compile_func(body):
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"""Given Python code for a function body, return a compiled
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callable that invokes that code.
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"""
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body = 'def {}():\n {}'.format(
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FUNC_NAME,
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body.replace('\n', '\n ')
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)
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code = compile(body, 'inline', 'exec')
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env = {}
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eval(code, env)
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return env[FUNC_NAME]
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class InlinePlugin(BeetsPlugin):
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def __init__(self):
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super().__init__()
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config.add({
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'pathfields': {}, # Legacy name.
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'item_fields': {},
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'album_fields': {},
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})
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# Item fields.
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for key, view in itertools.chain(config['item_fields'].items(),
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config['pathfields'].items()):
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self._log.debug('adding item field {0}', key)
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func = self.compile_inline(view.as_str(), False)
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if func is not None:
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self.template_fields[key] = func
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# Album fields.
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for key, view in config['album_fields'].items():
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self._log.debug('adding album field {0}', key)
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func = self.compile_inline(view.as_str(), True)
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if func is not None:
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self.album_template_fields[key] = func
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def compile_inline(self, python_code, album):
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"""Given a Python expression or function body, compile it as a path
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field function. The returned function takes a single argument, an
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Item, and returns a Unicode string. If the expression cannot be
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compiled, then an error is logged and this function returns None.
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"""
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# First, try compiling as a single function.
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try:
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code = compile(f'({python_code})', 'inline', 'eval')
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except SyntaxError:
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# Fall back to a function body.
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try:
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func = _compile_func(python_code)
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except SyntaxError:
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self._log.error('syntax error in inline field definition:\n'
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'{0}', traceback.format_exc())
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return
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else:
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is_expr = False
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else:
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is_expr = True
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def _dict_for(obj):
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out = dict(obj)
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if album:
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out['items'] = list(obj.items())
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return out
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if is_expr:
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# For expressions, just evaluate and return the result.
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def _expr_func(obj):
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values = _dict_for(obj)
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try:
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return eval(code, values)
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except Exception as exc:
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raise InlineError(python_code, exc)
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return _expr_func
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else:
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# For function bodies, invoke the function with values as global
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# variables.
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def _func_func(obj):
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old_globals = dict(func.__globals__)
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func.__globals__.update(_dict_for(obj))
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try:
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return func()
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except Exception as exc:
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raise InlineError(python_code, exc)
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finally:
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func.__globals__.clear()
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func.__globals__.update(old_globals)
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return _func_func
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