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"""String related methods."""
from .demandload import demand_compile_regexp
demand_compile_regexp('_whitespace_regex', r'^(?P<indent>\s+)')
def pluralism(obj, none=None, singular='', plural='s'):
"""Return singular or plural suffix depending on object's length or value."""
# default to plural for empty objects, e.g. there are 0 repos
if none is None:
none = plural
try:
value = len(obj)
except TypeError:
# value is probably an int
value = obj
if value == 0:
return none
elif value == 1:
return singular
return plural
def doc_dedent(s):
"""Support dedenting docstrings with initial line having no indentation."""
try:
lines = s.split('\n')
except AttributeError:
raise TypeError(f'{s!r} is not a string')
if lines:
# find first line with an indent if one exists
for line in lines:
if mo := _whitespace_regex.match(line):
indent = mo.group('indent')
break
else:
indent = ''
len_i = len(indent)
return '\n'.join(x[len_i:] if x.startswith(indent) else x for x in lines)
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