Mercurial > repos > shellac > sam_consensus_v3
comparison env/lib/python3.9/site-packages/soupsieve/util.py @ 0:4f3585e2f14b draft default tip
"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
| author | shellac |
|---|---|
| date | Mon, 22 Mar 2021 18:12:50 +0000 |
| parents | |
| children |
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| -1:000000000000 | 0:4f3585e2f14b |
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| 1 """Utility.""" | |
| 2 from functools import wraps, lru_cache | |
| 3 import warnings | |
| 4 import re | |
| 5 | |
| 6 DEBUG = 0x00001 | |
| 7 | |
| 8 RE_PATTERN_LINE_SPLIT = re.compile(r'(?:\r\n|(?!\r\n)[\n\r])|$') | |
| 9 | |
| 10 UC_A = ord('A') | |
| 11 UC_Z = ord('Z') | |
| 12 | |
| 13 | |
| 14 @lru_cache(maxsize=512) | |
| 15 def lower(string): | |
| 16 """Lower.""" | |
| 17 | |
| 18 new_string = [] | |
| 19 for c in string: | |
| 20 o = ord(c) | |
| 21 new_string.append(chr(o + 32) if UC_A <= o <= UC_Z else c) | |
| 22 return ''.join(new_string) | |
| 23 | |
| 24 | |
| 25 class SelectorSyntaxError(Exception): | |
| 26 """Syntax error in a CSS selector.""" | |
| 27 | |
| 28 def __init__(self, msg, pattern=None, index=None): | |
| 29 """Initialize.""" | |
| 30 | |
| 31 self.line = None | |
| 32 self.col = None | |
| 33 self.context = None | |
| 34 | |
| 35 if pattern is not None and index is not None: | |
| 36 # Format pattern to show line and column position | |
| 37 self.context, self.line, self.col = get_pattern_context(pattern, index) | |
| 38 msg = '{}\n line {}:\n{}'.format(msg, self.line, self.context) | |
| 39 | |
| 40 super(SelectorSyntaxError, self).__init__(msg) | |
| 41 | |
| 42 | |
| 43 def deprecated(message, stacklevel=2): # pragma: no cover | |
| 44 """ | |
| 45 Raise a `DeprecationWarning` when wrapped function/method is called. | |
| 46 | |
| 47 Borrowed from https://stackoverflow.com/a/48632082/866026 | |
| 48 """ | |
| 49 | |
| 50 def _decorator(func): | |
| 51 @wraps(func) | |
| 52 def _func(*args, **kwargs): | |
| 53 warnings.warn( | |
| 54 "'{}' is deprecated. {}".format(func.__name__, message), | |
| 55 category=DeprecationWarning, | |
| 56 stacklevel=stacklevel | |
| 57 ) | |
| 58 return func(*args, **kwargs) | |
| 59 return _func | |
| 60 return _decorator | |
| 61 | |
| 62 | |
| 63 def warn_deprecated(message, stacklevel=2): # pragma: no cover | |
| 64 """Warn deprecated.""" | |
| 65 | |
| 66 warnings.warn( | |
| 67 message, | |
| 68 category=DeprecationWarning, | |
| 69 stacklevel=stacklevel | |
| 70 ) | |
| 71 | |
| 72 | |
| 73 def get_pattern_context(pattern, index): | |
| 74 """Get the pattern context.""" | |
| 75 | |
| 76 last = 0 | |
| 77 current_line = 1 | |
| 78 col = 1 | |
| 79 text = [] | |
| 80 line = 1 | |
| 81 | |
| 82 # Split pattern by newline and handle the text before the newline | |
| 83 for m in RE_PATTERN_LINE_SPLIT.finditer(pattern): | |
| 84 linetext = pattern[last:m.start(0)] | |
| 85 if not len(m.group(0)) and not len(text): | |
| 86 indent = '' | |
| 87 offset = -1 | |
| 88 col = index - last + 1 | |
| 89 elif last <= index < m.end(0): | |
| 90 indent = '--> ' | |
| 91 offset = (-1 if index > m.start(0) else 0) + 3 | |
| 92 col = index - last + 1 | |
| 93 else: | |
| 94 indent = ' ' | |
| 95 offset = None | |
| 96 if len(text): | |
| 97 # Regardless of whether we are presented with `\r\n`, `\r`, or `\n`, | |
| 98 # we will render the output with just `\n`. We will still log the column | |
| 99 # correctly though. | |
| 100 text.append('\n') | |
| 101 text.append('{}{}'.format(indent, linetext)) | |
| 102 if offset is not None: | |
| 103 text.append('\n') | |
| 104 text.append(' ' * (col + offset) + '^') | |
| 105 line = current_line | |
| 106 | |
| 107 current_line += 1 | |
| 108 last = m.end(0) | |
| 109 | |
| 110 return ''.join(text), line, col |