~zerok/rstsuite/main

"""

This module provides a simple interface to various SCM systems in order

to fetch the last update-time of a document.

"""

from os.path import join, abspath

import datetime

__all__ = ['get_scm', 'SCMError']

_SCMS = {}

class SCMError(RuntimeError): pass

def get_scm(name, cwd=None):

    return _SCMS[name](cwd)

class SCM(object):

    def __init__(self, cwd=None):

        self._cwd = cwd or abspath('.')

        pass

    def get_lastUpdateTime(self, filepath):

        raise SCMError("LastUpdateTime not implemented")

try:

    from mercurial import hg, ui, context

    import mercurial

    class Hg(SCM):

        def __init__(self, cwd=None):

            super(Hg, self).__init__(cwd)

            if not self._hg_available():

                raise SCMError("This is not the project root directory!")

            _ui = ui.ui()

            self._repo = hg.repository(_ui,self._cwd)

        def _hg_available(self):

            return join(abspath(self._cwd), '.hg')

        def get_lastUpdateTime(self, filepath):

            changelog = self._repo.changelog

            log = self._repo.file(filepath)

            rev=log.linkrev(log.tip())

            ctx = context.changectx(self._repo, changeid=rev)

            return datetime.datetime.utcfromtimestamp(ctx.date()[0])

    _SCMS['hg']=Hg

except:

    pass