annotate hgext3rd/topic/revset.py @ 1901:85390446f8c1

packaging: fix setup.py and install as hgext3rd.topic

This changeset is doing two things (gasp):

- It fixes various errors in the setup.py
- It move the topic source and install into hgext3rd.topic.

This last part (code source move) use hgext3rd as namespace package to prevent
installation nightmare. This won't be officially supported until Mercurial 3.8,
but in the meantime, 3.7 user can enable it using the full package name:

  [extensions]
  hgext3rd.topic=

Thanks goes to Julien Cristau <[e-mail]> for the initial
version of this.

from mercurial import revset
from mercurial import util

from . import constants, destination

try:
    mkmatcher = revset._stringmatcher
except AttributeError:
    mkmatcher = util.stringmatcher


def topicset(repo, subset, x):
    """`topic([topic])`
    Specified topic or all changes with any topic specified.

    If `topic` starts with `re:` the remainder of the name is treated
    as a regular expression.

    TODO: make `topic(revset)` work the same as `branch(revset)`.
    """
    args = revset.getargs(x, 0, 1, 'topic takes one or no arguments')
    if args:
        # match a specific topic
        topic = revset.getstring(args[0], 'topic() argument must be a string')
        if topic == '.':
            topic = repo['.'].extra().get('topic', '')
        _kind, _pattern, matcher = mkmatcher(topic)
    else:
        matcher = lambda t: bool(t)
    drafts = subset.filter(lambda r: repo[r].mutable())
    return drafts.filter(
        lambda r: matcher(repo[r].extra().get(constants.extrakey, '')))

def ngtipset(repo, subset, x):
    """`ngtip([branch])`

    The untopiced tip.

    Name is horrible so that people change it.
    """
    args = revset.getargs(x, 1, 1, 'topic takes one')
    # match a specific topic
    branch = revset.getstring(args[0], 'ngtip() argument must be a string')
    if branch == '.':
        branch = repo['.'].branch()
    return subset & destination.ngtip(repo, branch)

def modsetup():
    revset.symbols.update({'topic': topicset})
    revset.symbols.update({'ngtip': ngtipset})