Mercurial > repos > shellac > sam_consensus_v3

annotate env/lib/python3.9/site-packages/soupsieve/util.py @ 0:4f3585e2f14b draft default tip

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