lib/hg.py

   1 # -*- coding: utf-8 -*-
   2 import os
   3 import codecs
   4 from mercurial import localrepo, ui, match, node, encoding, util
   5 import mercurial.merge, mercurial.error
   6
   7 encoding.encoding = 'utf-8'
   8
   9
  10
  11
  12 class Repository(object):
  13     """Abstrakcja repozytorium Mercurial. Działa z Mercurial w wersji 1.3.1."""
  14
  15     def __init__(self, path, create=False):
  16         self.ui = ui.ui()
  17         self.ui.config('ui', 'quiet', 'true')
  18         self.ui.config('ui', 'interactive', 'false')
  19
  20         self.real_path = os.path.realpath(path)
  21         self.repo = self.open_repository(self.real_path, create)
  22         self._pending_files = []
  23
  24     def open_repository(self, path, create=False):
  25         if os.path.isdir(path):
  26             try:
  27                 return localrepo.localrepository(self.ui, path)
  28             except mercurial.error.RepoError:
  29                 # dir is not an hg repo, we must init it
  30                 if create:
  31                     return localrepo.localrepository(self.ui, path, create=1)
  32         elif create:
  33             os.makedirs(path)
  34             return localrepo.localrepository(self.ui, path, create=1)
  35         raise RepositoryDoesNotExist("Repository %s does not exist." % path)
  36
  37     def file_list(self, branch):
  38         return self.in_branch(lambda: self._file_list(), branch)
  39
  40     def _file_list(self):
  41         return list(self.repo[None])
  42
  43     def get_file(self, path, branch):
  44         return self.in_branch(lambda: self._get_file(path), branch)
  45
  46     def _get_file(self, path):
  47         return self.repo.wread(path)
  48
  49     def add_file(self, path, value, branch):
  50         return self.in_branch(lambda: self._add_file(path, value), branch)
  51
  52     def _add_file(self, path, value):
  53         return self.repo.wwrite(path, value.encode('utf-8'), [])
  54
  55     def _commit(self, message, user=None):
  56         return self.repo.commit(text=message, user=user)
  57
  58     def commit(self, message, branch, user=None):
  59         return self.in_branch(lambda: self._commit(message, key=key, user=user), branch)
  60
  61     def in_branch(self, action, bname):
  62         wlock = self.repo.wlock()
  63         try:
  64             old = self._switch_to_branch(bname)
  65             try:
  66                 # do some stuff
  67                 return action()
  68             finally:
  69                 self._switch_to_branch(old)
  70         finally:
  71             wlock.release()
  72
  73     def _switch_to_branch(self, bname, create=True):
  74         wlock = self.repo.wlock()
  75         try:
  76             current = self.repo[None].branch()
  77             if current == bname:
  78                 return current
  79             try:
  80                 tip = self.repo.branchtags()[bname]
  81             except KeyError, ke:
  82                 if not create: raise ke
  83
  84                 # create the branch on the fly
  85
  86                 # first switch to default branch
  87                 default_tip = self.repo.branchtags()['default']
  88                 mercurial.merge.update(self.repo, default_tip, False, True, None)
  89
  90                 # set the dirstate to new branch
  91                 self.repo.dirstate.setbranch(bname)
  92                 self._commit('Initial commit for automatic branch "%s".' % bname, user="django-admin")
  93
  94                 # collect the new tip
  95                 tip = self.repo.branchtags()[bname]
  96
  97             upstats = mercurial.merge.update(self.repo, tip, False, True, None)
  98             return current
  99         except KeyError, ke:
 100             raise RepositoryException("Can't switch to branch '%s': no such branch." % bname , ke)
 101         except util.Abort, ae:
 102             raise RepositoryException("Can't switch to branch '%s': %s"  % (bname, ae.message), ae)
 103         finally:
 104             wlock.release()
 105
 106     def write_lock(self):
 107         """Returns w write lock to the repository."""
 108         return self.repo.wlock()
 109
 110
 111 class RepositoryException(Exception):
 112
 113     def __init__(self, msg, cause=None):
 114         Exception.__init__(self, msg)
 115         self.cause = cause
 116
 117 class RepositoryDoesNotExist(RepositoryException):
 118     pass