Mercurial > public > mercurial-scm > hg-stable
comparison mercurial/util.py @ 26481:7d132557e44a
util: extract stringmatcher() from revset
This is used to match against tags, bookmarks, etc in revsets. It will be used
in a future patch to do the same tag matching in templater.
| author | Matt Harbison <matt_harbison@yahoo.com> |
|---|---|
| date | Sat, 22 Aug 2015 22:52:18 -0400 |
| parents | 6ae14d1ca3aa |
| children | 3a0bb61371c5 |
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| 26480:6ae14d1ca3aa | 26481:7d132557e44a |
|---|---|
| 1603 return lambda x: x >= start and x <= stop | 1603 return lambda x: x >= start and x <= stop |
| 1604 else: | 1604 else: |
| 1605 start, stop = lower(date), upper(date) | 1605 start, stop = lower(date), upper(date) |
| 1606 return lambda x: x >= start and x <= stop | 1606 return lambda x: x >= start and x <= stop |
| 1607 | 1607 |
| 1608 def stringmatcher(pattern): | |
| 1609 """ | |
| 1610 accepts a string, possibly starting with 're:' or 'literal:' prefix. | |
| 1611 returns the matcher name, pattern, and matcher function. | |
| 1612 missing or unknown prefixes are treated as literal matches. | |
| 1613 | |
| 1614 helper for tests: | |
| 1615 >>> def test(pattern, *tests): | |
| 1616 ... kind, pattern, matcher = stringmatcher(pattern) | |
| 1617 ... return (kind, pattern, [bool(matcher(t)) for t in tests]) | |
| 1618 | |
| 1619 exact matching (no prefix): | |
| 1620 >>> test('abcdefg', 'abc', 'def', 'abcdefg') | |
| 1621 ('literal', 'abcdefg', [False, False, True]) | |
| 1622 | |
| 1623 regex matching ('re:' prefix) | |
| 1624 >>> test('re:a.+b', 'nomatch', 'fooadef', 'fooadefbar') | |
| 1625 ('re', 'a.+b', [False, False, True]) | |
| 1626 | |
| 1627 force exact matches ('literal:' prefix) | |
| 1628 >>> test('literal:re:foobar', 'foobar', 're:foobar') | |
| 1629 ('literal', 're:foobar', [False, True]) | |
| 1630 | |
| 1631 unknown prefixes are ignored and treated as literals | |
| 1632 >>> test('foo:bar', 'foo', 'bar', 'foo:bar') | |
| 1633 ('literal', 'foo:bar', [False, False, True]) | |
| 1634 """ | |
| 1635 if pattern.startswith('re:'): | |
| 1636 pattern = pattern[3:] | |
| 1637 try: | |
| 1638 regex = remod.compile(pattern) | |
| 1639 except remod.error as e: | |
| 1640 raise error.ParseError(_('invalid regular expression: %s') | |
| 1641 % e) | |
| 1642 return 're', pattern, regex.search | |
| 1643 elif pattern.startswith('literal:'): | |
| 1644 pattern = pattern[8:] | |
| 1645 return 'literal', pattern, pattern.__eq__ | |
| 1646 | |
| 1608 def shortuser(user): | 1647 def shortuser(user): |
| 1609 """Return a short representation of a user name or email address.""" | 1648 """Return a short representation of a user name or email address.""" |
| 1610 f = user.find('@') | 1649 f = user.find('@') |
| 1611 if f >= 0: | 1650 if f >= 0: |
| 1612 user = user[:f] | 1651 user = user[:f] |