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# (C) Copyright David Abrahams 2001. Permission to copy, use, modify, sell and
# distribute this software is granted provided this copyright notice appears in
# all copies. This software is provided "as is" without express or implied
# warranty, and with no claim as to its suitability for any purpose.
import re
from b2.util import bjam_signature
def transform (list, pattern, indices = [1]):
""" Matches all elements of 'list' agains the 'pattern'
and returns a list of the elements indicated by indices of
all successfull matches. If 'indices' is omitted returns
a list of first paranthethised groups of all successfull
matches.
"""
result = []
for e in list:
m = re.match (pattern, e)
if m:
for i in indices:
result.append (m.group (i))
return result
@bjam_signature([['s', 'pattern', 'replacement']])
def replace(s, pattern, replacement):
"""Replaces occurrences of a match string in a given
string and returns the new string. The match string
can be a regex expression.
Args:
s (str): the string to modify
pattern (str): the search expression
replacement (str): the string to replace each match with
"""
return re.sub(pattern, replacement, s)
@bjam_signature((['items', '*'], ['match'], ['replacement']))
def replace_list(items, match, replacement):
"""Replaces occurrences of a match string in a given list of strings and returns
a list of new strings. The match string can be a regex expression.
Args:
items (list): the list of strings to modify.
match (str): the search expression.
replacement (str): the string to replace with.
"""
return [replace(item, match, replacement) for item in items]
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