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import os
import subprocess
import sys
class GitExporter(object):
"""An exporter for testgit repositories.
The exporter simply delegates to git fast-export.
"""
def __init__(self, repo):
"""Creates a new exporter for the specified repo.
"""
self.repo = repo
def export_repo(self, base, refs=None):
"""Exports a fast-export stream for the given directory.
Simply delegates to git fast-epxort and pipes it through sed
to make the refs show up under the prefix rather than the
default refs/heads. This is to demonstrate how the export
data can be stored under it's own ref (using the refspec
capability).
If None, refs defaults to ["HEAD"].
"""
if not refs:
refs = ["HEAD"]
dirname = self.repo.get_base_path(base)
path = os.path.abspath(os.path.join(dirname, 'testgit.marks'))
if not os.path.exists(dirname):
os.makedirs(dirname)
print "feature relative-marks"
if os.path.exists(os.path.join(dirname, 'git.marks')):
print "feature import-marks=%s/git.marks" % self.repo.hash
print "feature export-marks=%s/git.marks" % self.repo.hash
sys.stdout.flush()
args = ["git", "--git-dir=" + self.repo.gitpath, "fast-export", "--export-marks=" + path]
if os.path.exists(path):
args.append("--import-marks=" + path)
args.extend(refs)
p1 = subprocess.Popen(args, stdout=subprocess.PIPE)
args = ["sed", "s_refs/heads/_" + self.repo.prefix + "_g"]
child = subprocess.Popen(args, stdin=p1.stdout)
if child.wait() != 0:
raise CalledProcessError
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