1import os 2import subprocess 3import sys 4 5 6class GitExporter(object): 7 """An exporter for testgit repositories. 8 9 The exporter simply delegates to git fast-export. 10 """ 11 12 def __init__(self, repo): 13 """Creates a new exporter for the specified repo. 14 """ 15 16 self.repo = repo 17 18 def export_repo(self, base): 19 """Exports a fast-export stream for the given directory. 20 21 Simply delegates to git fast-epxort and pipes it through sed 22 to make the refs show up under the prefix rather than the 23 default refs/heads. This is to demonstrate how the export 24 data can be stored under it's own ref (using the refspec 25 capability). 26 """ 27 28 dirname = self.repo.get_base_path(base) 29 path = os.path.abspath(os.path.join(dirname, 'testgit.marks')) 30 31 if not os.path.exists(dirname): 32 os.makedirs(dirname) 33 34 print "feature relative-marks" 35 if os.path.exists(os.path.join(dirname, 'git.marks')): 36 print "feature import-marks=%s/git.marks" % self.repo.hash 37 print "feature export-marks=%s/git.marks" % self.repo.hash 38 sys.stdout.flush() 39 40 args = ["git", "--git-dir=" + self.repo.gitpath, "fast-export", "--export-marks=" + path] 41 42 if os.path.exists(path): 43 args.append("--import-marks=" + path) 44 45 args.append("HEAD") 46 47 p1 = subprocess.Popen(args, stdout=subprocess.PIPE) 48 49 args = ["sed", "s_refs/heads/_" + self.repo.prefix + "_g"] 50 51 child = subprocess.Popen(args, stdin=p1.stdout) 52 if child.wait() != 0: 53 raise CalledProcessError