Andrew's git - gitweb.git/blob - git_remote

   1import os
   2import subprocess
   3
   4def sanitize(rev, sep='\t'):
   5    """Converts a for-each-ref line to a name/value pair.
   6    """
   7
   8    splitrev = rev.split(sep)
   9    branchval = splitrev[0]
  10    branchname = splitrev[1].strip()
  11    if branchname.startswith("refs/heads/"):
  12        branchname = branchname[11:]
  13
  14    return branchname, branchval
  15
  16def is_remote(url):
  17    """Checks whether the specified value is a remote url.
  18    """
  19
  20    prefixes = ["http", "file", "git"]
  21
  22    return any(url.startswith(i) for i in prefixes)
  23
  24class GitRepo(object):
  25    """Repo object representing a repo.
  26    """
  27
  28    def __init__(self, path):
  29        """Initializes a new repo at the given path.
  30        """
  31
  32        self.path = path
  33        self.head = None
  34        self.revmap = {}
  35        self.local = not is_remote(self.path)
  36
  37        if(self.path.endswith('.git')):
  38            self.gitpath = self.path
  39        else:
  40            self.gitpath = os.path.join(self.path, '.git')
  41
  42        if self.local and not os.path.exists(self.gitpath):
  43            os.makedirs(self.gitpath)
  44
  45    def get_revs(self):
  46        """Fetches all revs from the remote.
  47        """
  48
  49        args = ["git", "ls-remote", self.gitpath]
  50        path = ".cached_revs"
  51        ofile = open(path, "w")
  52
  53        subprocess.check_call(args, stdout=ofile)
  54        output = open(path).readlines()
  55        self.revmap = dict(sanitize(i) for i in output)
  56        if "HEAD" in self.revmap:
  57            del self.revmap["HEAD"]
  58        self.revs = self.revmap.keys()
  59        ofile.close()
  60
  61    def get_head(self):
  62        """Determines the head of a local repo.
  63        """
  64
  65        if not self.local:
  66            return
  67
  68        path = os.path.join(self.gitpath, "HEAD")
  69        head = open(path).readline()
  70        self.head, _ = sanitize(head, ' ')