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comparison mercurial/util.py @ 13392:777cef34a890

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dispatch: support for $ escaping in shell-alias definition Sigils in shell-alias can be escaped by doubling them.
author Roman Sokolov <sokolov.r.v@gmail.com>
date Fri, 11 Feb 2011 03:32:40 +0300
parents f1fa8f481c7c
children 14f3795a5ed7
comparison
equal deleted inserted replaced
13391:d00bbff8600e 13392:777cef34a890
1500 for i in iterable: 1500 for i in iterable:
1501 if not i: 1501 if not i:
1502 return False 1502 return False
1503 return True 1503 return True
1504 1504
1505 def interpolate(prefix, mapping, s, fn=None): 1505 def interpolate(prefix, mapping, s, fn=None, escape_prefix=False):
1506 """Return the result of interpolating items in the mapping into string s. 1506 """Return the result of interpolating items in the mapping into string s.
1507 1507
1508 prefix is a single character string, or a two character string with 1508 prefix is a single character string, or a two character string with
1509 a backslash as the first character if the prefix needs to be escaped in 1509 a backslash as the first character if the prefix needs to be escaped in
1510 a regular expression. 1510 a regular expression.
1511 1511
1512 fn is an optional function that will be applied to the replacement text 1512 fn is an optional function that will be applied to the replacement text
1513 just before replacement. 1513 just before replacement.
1514
1515 escape_prefix is an optional flag that allows using doubled prefix for
1516 its escaping.
1514 """ 1517 """
1515 fn = fn or (lambda s: s) 1518 fn = fn or (lambda s: s)
1516 r = re.compile(r'%s(%s)' % (prefix, '|'.join(mapping.keys()))) 1519 patterns = '|'.join(mapping.keys())
1520 if escape_prefix:
1521 patterns += '|' + prefix
1522 if len(prefix) > 1:
1523 prefix_char = prefix[1:]
1524 else:
1525 prefix_char = prefix
1526 mapping[prefix_char] = prefix_char
1527 r = re.compile(r'%s(%s)' % (prefix, patterns))
1517 return r.sub(lambda x: fn(mapping[x.group()[1:]]), s) 1528 return r.sub(lambda x: fn(mapping[x.group()[1:]]), s)
1518 1529
1519 def getport(port): 1530 def getport(port):
1520 """Return the port for a given network service. 1531 """Return the port for a given network service.
1521 1532