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108 lines
3.1 KiB
Python
108 lines
3.1 KiB
Python
#!/usr/bin/env python
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# vim:fileencoding=utf-8
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# License: GPL v3 Copyright: 2018, Kovid Goyal <kovid at kovidgoyal.net>
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import os
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import re
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from .rgb import to_color as as_color
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from .utils import log_error
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key_pat = re.compile(r'([a-zA-Z][a-zA-Z0-9_-]*)\s+(.+)$')
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def to_color(x):
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return as_color(x, validate=True)
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def positive_int(x):
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return max(0, int(x))
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def positive_float(x):
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return max(0, float(x))
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def unit_float(x):
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return max(0, min(float(x), 1))
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def to_bool(x):
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return x.lower() in 'y yes true'.split()
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def parse_line(line, type_map, special_handling, ans, all_keys, base_path_for_includes):
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line = line.strip()
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if not line or line.startswith('#'):
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return
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m = key_pat.match(line)
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if m is not None:
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key, val = m.groups()
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if special_handling(key, val, ans):
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return
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if key == 'include':
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val = val.strip()
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if not os.path.isabs(val):
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val = os.path.join(base_path_for_includes, val)
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try:
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with open(val, encoding='utf-8', errors='replace') as include:
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_parse(include, type_map, special_handling, ans, all_keys)
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except FileNotFoundError:
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log_error('Could not find included config file: {}, ignoring'.format(val))
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except EnvironmentError:
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log_error('Could not read from included config file: {}, ignoring'.format(val))
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return
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if all_keys is not None and key not in all_keys:
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log_error('Ignoring unknown config key: {}'.format(key))
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return
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tm = type_map.get(key)
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if tm is not None:
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val = tm(val)
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ans[key] = val
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def _parse(lines, type_map, special_handling, ans, all_keys):
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name = getattr(lines, 'name', None)
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if name:
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base_path_for_includes = os.path.dirname(os.path.abspath(name))
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else:
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from .constants import config_dir
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base_path_for_includes = config_dir
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for line in lines:
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parse_line(line, type_map, special_handling, ans, all_keys, base_path_for_includes)
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def parse_config_base(
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lines, defaults, type_map, special_handling, ans, check_keys=True
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):
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all_keys = defaults._asdict() if check_keys else None
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_parse(lines, type_map, special_handling, ans, all_keys)
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def create_options_class(keys):
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keys = tuple(sorted(keys))
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slots = keys + ('_fields',)
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def __init__(self, kw):
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for k, v in kw.items():
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setattr(self, k, v)
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def _asdict(self):
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return {k: getattr(self, k) for k in self._fields}
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def _replace(self, **kw):
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ans = self._asdict()
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ans.update(kw)
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return self.__class__(ans)
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ans = type('Options', (), {'__slots__': slots, '__init__': __init__, '_asdict': _asdict, '_replace': _replace})
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ans._fields = keys
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return ans
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def init_config(defaults_path, parse_config):
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with open(defaults_path, encoding='utf-8', errors='replace') as f:
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defaults = parse_config(f, check_keys=False)
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Options = create_options_class(defaults.keys())
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defaults = Options(defaults)
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return Options, defaults
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