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61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
# SPDX-FileCopyrightText: 2015-2022 Espressif Systems (Shanghai) CO LTD
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# SPDX-License-Identifier: Apache-2.0
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import re
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class LineMatcher(object):
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"""
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Assembles a dictionary of filtering rules based on the --print_filter
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argument of idf_monitor. Then later it is used to match lines and
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determine whether they should be shown on screen or not.
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"""
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LEVEL_N = 0
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LEVEL_E = 1
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LEVEL_W = 2
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LEVEL_I = 3
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LEVEL_D = 4
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LEVEL_V = 5
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level = {'N': LEVEL_N, 'E': LEVEL_E, 'W': LEVEL_W, 'I': LEVEL_I, 'D': LEVEL_D,
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'V': LEVEL_V, '*': LEVEL_V, '': LEVEL_V}
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def __init__(self, print_filter):
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# type: (str) -> None
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self._dict = dict()
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self._re = re.compile(r'^(?:\033\[[01];?[0-9]+m?)?([EWIDV]) \([0-9]+\) ([^:]+): ')
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items = print_filter.split()
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if len(items) == 0:
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self._dict['*'] = self.LEVEL_V # default is to print everything
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for f in items:
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s = f.split(r':')
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if len(s) == 1:
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# specifying no warning level defaults to verbose level
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lev = self.LEVEL_V
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elif len(s) == 2:
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if len(s[0]) == 0:
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raise ValueError('No tag specified in filter ' + f)
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try:
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lev = self.level[s[1].upper()]
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except KeyError:
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raise ValueError('Unknown warning level in filter ' + f)
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else:
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raise ValueError('Missing ":" in filter ' + f)
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self._dict[s[0]] = lev
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def match(self, line):
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# type: (str) -> bool
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try:
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m = self._re.search(line)
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if m:
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lev = self.level[m.group(1)]
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if m.group(2) in self._dict:
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return self._dict[m.group(2)] >= lev
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return self._dict.get('*', self.LEVEL_N) >= lev
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except (KeyError, IndexError):
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# Regular line written with something else than ESP_LOG*
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# or an empty line.
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pass
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# We need something more than "*.N" for printing.
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return self._dict.get('*', self.LEVEL_N) > self.LEVEL_N
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