vcs.py

   1 import os, git, subprocess
   2
   3 '''A VCS must have an "update" method with an optional "force" parameter.'''
   4
   5 # Fetch updates from git
   6 class Git:
   7         def __init__(self, folder, url, commit):
   8                 self.folder = os.path.abspath(folder)
   9                 self.url = url
  10                 self.commit = commit
  11
  12         class _ProgressPrinter(git.remote.RemoteProgress):
  13                 def update(self, op_code, cur_count, max_count=None, message=''):
  14                         print self._cur_line+(" "*30)+"\r",
  15
  16         def update(self):
  17                 isBranch = (self.commit.startswith('origin/'))
  18                 if isBranch:
  19                         branchname = self.commit[len('origin/'):]
  20                 else:
  21                         branchname = "tag"
  22                 # get us a git repository, and the "origin" remote
  23                 if os.path.exists(self.folder):
  24                         # load existing repo
  25                         repo = git.Repo(self.folder)
  26                         origin = repo.remotes.origin
  27                 else:
  28                         # create a new one
  29                         os.makedirs(self.folder)
  30                         repo = git.Repo.init(self.folder)
  31                         origin = repo.create_remote('origin', self.url)
  32                 origin.fetch(progress=Git._ProgressPrinter()) # download new data
  33                 print " "*80+"\r", # clean the line we are in
  34                 # create/find correct branch
  35                 if branchname in repo.heads:
  36                         branch = repo.heads[branchname]
  37                 else:
  38                         branch = repo.create_head(branchname, self.commit)
  39                         if isBranch: # track remote branch
  40                                 branch.set_tracking_branch(origin.refs[branchname])
  41                 # update it to the latest remote commit
  42                 branch.checkout()
  43                 repo.git.rebase(self.commit)
  44                 print "...done",
  45                 if repo.head.reference.commit != repo.commit(self.commit):
  46                         print "(keeping local patches around)",
  47                 print
  48
  49         def version(self):
  50                 repo = git.Repo(self.folder)
  51                 v = repo.git.describe()
  52                 if v.startswith('v'): v = v[1:]
  53                 return v
  54
  55 # Fetch updates via SVN
  56 class SVN:
  57         def __init__(self, folder, url, versionName):
  58                 self.folder = os.path.abspath(folder)
  59                 self.url = url
  60                 self.versionName = versionName
  61
  62         def update(self):
  63                 if os.path.exists(self.folder):
  64                         os.chdir(self.folder) # go into repository
  65                         subprocess.check_call(['svn', 'switch', self.url]) # and update to the URL we got
  66                 else:
  67                         subprocess.check_call(['svn', 'co', self.url, self.folder]) # just download it
  68
  69         def version(self):
  70                 return self.versionName