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Diffstat (limited to 'git-remote-testgit.py')
| -rw-r--r-- | git-remote-testgit.py | 265 |
1 files changed, 0 insertions, 265 deletions
diff --git a/git-remote-testgit.py b/git-remote-testgit.py deleted file mode 100644 index 3dc4851cfc..0000000000 --- a/git-remote-testgit.py +++ /dev/null @@ -1,265 +0,0 @@ -#!/usr/bin/env python - -# This command is a simple remote-helper, that is used both as a -# testcase for the remote-helper functionality, and as an example to -# show remote-helper authors one possible implementation. -# -# This is a Git <-> Git importer/exporter, that simply uses git -# fast-import and git fast-export to consume and produce fast-import -# streams. -# -# To understand better the way things work, one can activate debug -# traces by setting (to any value) the environment variables -# GIT_TRANSPORT_HELPER_DEBUG and GIT_DEBUG_TESTGIT, to see messages -# from the transport-helper side, or from this example remote-helper. - -# hashlib is only available in python >= 2.5 -try: - import hashlib - _digest = hashlib.sha1 -except ImportError: - import sha - _digest = sha.new -import sys -import os -sys.path.insert(0, os.getenv("GITPYTHONLIB",".")) - -from git_remote_helpers.util import die, debug, warn -from git_remote_helpers.git.repo import GitRepo -from git_remote_helpers.git.exporter import GitExporter -from git_remote_helpers.git.importer import GitImporter -from git_remote_helpers.git.non_local import NonLocalGit - -def get_repo(alias, url): - """Returns a git repository object initialized for usage. - """ - - repo = GitRepo(url) - repo.get_revs() - repo.get_head() - - hasher = _digest() - hasher.update(repo.path) - repo.hash = hasher.hexdigest() - - repo.get_base_path = lambda base: os.path.join( - base, 'info', 'fast-import', repo.hash) - - prefix = 'refs/testgit/%s/' % alias - debug("prefix: '%s'", prefix) - - repo.gitdir = os.environ["GIT_DIR"] - repo.alias = alias - repo.prefix = prefix - - repo.exporter = GitExporter(repo) - repo.importer = GitImporter(repo) - repo.non_local = NonLocalGit(repo) - - return repo - - -def local_repo(repo, path): - """Returns a git repository object initalized for usage. - """ - - local = GitRepo(path) - - local.non_local = None - local.gitdir = repo.gitdir - local.alias = repo.alias - local.prefix = repo.prefix - local.hash = repo.hash - local.get_base_path = repo.get_base_path - local.exporter = GitExporter(local) - local.importer = GitImporter(local) - - return local - - -def do_capabilities(repo, args): - """Prints the supported capabilities. - """ - - print "import" - print "export" - print "refspec refs/heads/*:%s*" % repo.prefix - - dirname = repo.get_base_path(repo.gitdir) - - if not os.path.exists(dirname): - os.makedirs(dirname) - - path = os.path.join(dirname, 'testgit.marks') - - print "*export-marks %s" % path - if os.path.exists(path): - print "*import-marks %s" % path - - print # end capabilities - - -def do_list(repo, args): - """Lists all known references. - - Bug: This will always set the remote head to master for non-local - repositories, since we have no way of determining what the remote - head is at clone time. - """ - - for ref in repo.revs: - debug("? refs/heads/%s", ref) - print "? refs/heads/%s" % ref - - if repo.head: - debug("@refs/heads/%s HEAD" % repo.head) - print "@refs/heads/%s HEAD" % repo.head - else: - debug("@refs/heads/master HEAD") - print "@refs/heads/master HEAD" - - print # end list - - -def update_local_repo(repo): - """Updates (or clones) a local repo. - """ - - if repo.local: - return repo - - path = repo.non_local.clone(repo.gitdir) - repo.non_local.update(repo.gitdir) - repo = local_repo(repo, path) - return repo - - -def do_import(repo, args): - """Exports a fast-import stream from testgit for git to import. - """ - - if len(args) != 1: - die("Import needs exactly one ref") - - if not repo.gitdir: - die("Need gitdir to import") - - ref = args[0] - refs = [ref] - - while True: - line = sys.stdin.readline() - if line == '\n': - break - if not line.startswith('import '): - die("Expected import line.") - - # strip of leading 'import ' - ref = line[7:].strip() - refs.append(ref) - - repo = update_local_repo(repo) - repo.exporter.export_repo(repo.gitdir, refs) - - print "done" - - -def do_export(repo, args): - """Imports a fast-import stream from git to testgit. - """ - - if not repo.gitdir: - die("Need gitdir to export") - - update_local_repo(repo) - changed = repo.importer.do_import(repo.gitdir) - - if not repo.local: - repo.non_local.push(repo.gitdir) - - for ref in changed: - print "ok %s" % ref - print - - -COMMANDS = { - 'capabilities': do_capabilities, - 'list': do_list, - 'import': do_import, - 'export': do_export, -} - - -def sanitize(value): - """Cleans up the url. - """ - - if value.startswith('testgit::'): - value = value[9:] - - return value - - -def read_one_line(repo): - """Reads and processes one command. - """ - - line = sys.stdin.readline() - - cmdline = line - - if not cmdline: - warn("Unexpected EOF") - return False - - cmdline = cmdline.strip().split() - if not cmdline: - # Blank line means we're about to quit - return False - - cmd = cmdline.pop(0) - debug("Got command '%s' with args '%s'", cmd, ' '.join(cmdline)) - - if cmd not in COMMANDS: - die("Unknown command, %s", cmd) - - func = COMMANDS[cmd] - func(repo, cmdline) - sys.stdout.flush() - - return True - - -def main(args): - """Starts a new remote helper for the specified repository. - """ - - if len(args) != 3: - die("Expecting exactly three arguments.") - sys.exit(1) - - if os.getenv("GIT_DEBUG_TESTGIT"): - import git_remote_helpers.util - git_remote_helpers.util.DEBUG = True - - alias = sanitize(args[1]) - url = sanitize(args[2]) - - if not alias.isalnum(): - warn("non-alnum alias '%s'", alias) - alias = "tmp" - - args[1] = alias - args[2] = url - - repo = get_repo(alias, url) - - debug("Got arguments %s", args[1:]) - - more = True - - while (more): - more = read_one_line(repo) - -if __name__ == '__main__': - sys.exit(main(sys.argv)) |