1import os 2import subprocess 3import sys 4 5from git_remote_helpers.util import check_call 6 7 8class GitExporter(object): 9 """An exporter for testgit repositories. 10 11 The exporter simply delegates to git fast-export. 12 """ 13 14 def __init__(self, repo): 15 """Creates a new exporter for the specified repo. 16 """ 17 18 self.repo = repo 19 20 def export_repo(self, base, refs=None): 21 """Exports a fast-export stream for the given directory. 22 23 Simply delegates to git fast-epxort and pipes it through sed 24 to make the refs show up under the prefix rather than the 25 default refs/heads. This is to demonstrate how the export 26 data can be stored under it's own ref (using the refspec 27 capability). 28 29 If None, refs defaults to ["HEAD"]. 30 """ 31 32 if not refs: 33 refs = ["HEAD"] 34 35 dirname = self.repo.get_base_path(base) 36 path = os.path.abspath(os.path.join(dirname, 'testgit.marks')) 37 38 if not os.path.exists(dirname): 39 os.makedirs(dirname) 40 41 print "feature relative-marks" 42 if os.path.exists(os.path.join(dirname, 'git.marks')): 43 print "feature import-marks=%s/git.marks" % self.repo.hash 44 print "feature export-marks=%s/git.marks" % self.repo.hash 45 sys.stdout.flush() 46 47 args = ["git", "--git-dir=" + self.repo.gitpath, "fast-export", "--export-marks=" + path] 48 49 if os.path.exists(path): 50 args.append("--import-marks=" + path) 51 52 args.extend(refs) 53 54 p1 = subprocess.Popen(args, stdout=subprocess.PIPE) 55 56 args = ["sed", "s_refs/heads/_" + self.repo.prefix + "_g"] 57 58 check_call(args, stdin=p1.stdout)