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import os
import sys
from . import util
INDEX_FILENAME = "index"
class GitTree(object):
def __init__(self, tree):
self._tree = tree
def __repr__(self):
return "%s(%r)" % (self.__class__.__name__, self._tree)
def read(self):
util.system(['git', 'read-tree', '--reset',
self._tree], onerr=RuntimeError)
class GitIndex(object):
def __init__(self, filename):
self._filename = filename
try:
self._indextree = self.commit()
except RuntimeError as inst:
raise util.Abort('failed to read the index: %s' % inst)
def __repr__(self):
return "%s(%r, %r)" % (self.__class__.__name__, self._filename, self._indextree)
def commit(self):
return util.systemcall(['git', 'write-tree'], onerr=RuntimeError).rstrip('\n')
def write(self):
GitTree(self._indextree).read()
def backup_tree(self):
return self._indextree
class GitRepo(object):
def __init__(self, path):
try:
self.path = util.systemcall(['git', 'rev-parse', '--show-toplevel'],
onerr=util.Abort).rstrip('\n')
self._controldir = util.systemcall(['git', 'rev-parse', '--git-dir']).rstrip('\n')
if not os.path.isdir(self._controldir):
raise util.Abort
except util.Abort:
sys.exit(1)
def __repr__(self):
return "%s(%r)" % (self.__class__.__name__, self.path)
def controldir(self):
return os.path.abspath(self._controldir)
def index_path(self):
return os.path.join(self.controldir(), INDEX_FILENAME)
def open_index(self):
return GitIndex(self.index_path())
def head(self):
return util.systemcall(['git', 'rev-parse', '--verify', '-q', 'HEAD']).rstrip('\n')
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