blame.c: Properly initialize strbuf after calling, textconv_object()
[git/dscho.git] / git-remote-testgit.py
blobdf9d512f1a966635828cb7a8dadde3b0c2b7b9d8
1 #!/usr/bin/env python
3 # hashlib is only available in python >= 2.5
4 try:
5 import hashlib
6 _digest = hashlib.sha1
7 except ImportError:
8 import sha
9 _digest = sha.new
10 import sys
11 import os
12 sys.path.insert(0, os.getenv("GITPYTHONLIB","."))
14 from git_remote_helpers.util import die, debug, warn
15 from git_remote_helpers.git.repo import GitRepo
16 from git_remote_helpers.git.exporter import GitExporter
17 from git_remote_helpers.git.importer import GitImporter
18 from git_remote_helpers.git.non_local import NonLocalGit
20 def get_repo(alias, url):
21 """Returns a git repository object initialized for usage.
22 """
24 repo = GitRepo(url)
25 repo.get_revs()
26 repo.get_head()
28 hasher = _digest()
29 hasher.update(repo.path)
30 repo.hash = hasher.hexdigest()
32 repo.get_base_path = lambda base: os.path.join(
33 base, 'info', 'fast-import', repo.hash)
35 prefix = 'refs/testgit/%s/' % alias
36 debug("prefix: '%s'", prefix)
38 repo.gitdir = ""
39 repo.alias = alias
40 repo.prefix = prefix
42 repo.exporter = GitExporter(repo)
43 repo.importer = GitImporter(repo)
44 repo.non_local = NonLocalGit(repo)
46 return repo
49 def local_repo(repo, path):
50 """Returns a git repository object initalized for usage.
51 """
53 local = GitRepo(path)
55 local.non_local = None
56 local.gitdir = repo.gitdir
57 local.alias = repo.alias
58 local.prefix = repo.prefix
59 local.hash = repo.hash
60 local.get_base_path = repo.get_base_path
61 local.exporter = GitExporter(local)
62 local.importer = GitImporter(local)
64 return local
67 def do_capabilities(repo, args):
68 """Prints the supported capabilities.
69 """
71 print "import"
72 print "export"
73 print "gitdir"
74 print "refspec refs/heads/*:%s*" % repo.prefix
76 print # end capabilities
79 def do_list(repo, args):
80 """Lists all known references.
82 Bug: This will always set the remote head to master for non-local
83 repositories, since we have no way of determining what the remote
84 head is at clone time.
85 """
87 for ref in repo.revs:
88 debug("? refs/heads/%s", ref)
89 print "? refs/heads/%s" % ref
91 if repo.head:
92 debug("@refs/heads/%s HEAD" % repo.head)
93 print "@refs/heads/%s HEAD" % repo.head
94 else:
95 debug("@refs/heads/master HEAD")
96 print "@refs/heads/master HEAD"
98 print # end list
101 def update_local_repo(repo):
102 """Updates (or clones) a local repo.
105 if repo.local:
106 return repo
108 path = repo.non_local.clone(repo.gitdir)
109 repo.non_local.update(repo.gitdir)
110 repo = local_repo(repo, path)
111 return repo
114 def do_import(repo, args):
115 """Exports a fast-import stream from testgit for git to import.
118 if len(args) != 1:
119 die("Import needs exactly one ref")
121 if not repo.gitdir:
122 die("Need gitdir to import")
124 repo = update_local_repo(repo)
125 repo.exporter.export_repo(repo.gitdir)
128 def do_export(repo, args):
129 """Imports a fast-import stream from git to testgit.
132 if not repo.gitdir:
133 die("Need gitdir to export")
135 dirname = repo.get_base_path(repo.gitdir)
137 if not os.path.exists(dirname):
138 os.makedirs(dirname)
140 path = os.path.join(dirname, 'testgit.marks')
141 print path
142 if os.path.exists(path):
143 print path
144 else:
145 print ""
146 sys.stdout.flush()
148 update_local_repo(repo)
149 repo.importer.do_import(repo.gitdir)
150 repo.non_local.push(repo.gitdir)
153 def do_gitdir(repo, args):
154 """Stores the location of the gitdir.
157 if not args:
158 die("gitdir needs an argument")
160 repo.gitdir = ' '.join(args)
163 COMMANDS = {
164 'capabilities': do_capabilities,
165 'list': do_list,
166 'import': do_import,
167 'export': do_export,
168 'gitdir': do_gitdir,
172 def sanitize(value):
173 """Cleans up the url.
176 if value.startswith('testgit::'):
177 value = value[9:]
179 return value
182 def read_one_line(repo):
183 """Reads and processes one command.
186 line = sys.stdin.readline()
188 cmdline = line
190 if not cmdline:
191 warn("Unexpected EOF")
192 return False
194 cmdline = cmdline.strip().split()
195 if not cmdline:
196 # Blank line means we're about to quit
197 return False
199 cmd = cmdline.pop(0)
200 debug("Got command '%s' with args '%s'", cmd, ' '.join(cmdline))
202 if cmd not in COMMANDS:
203 die("Unknown command, %s", cmd)
205 func = COMMANDS[cmd]
206 func(repo, cmdline)
207 sys.stdout.flush()
209 return True
212 def main(args):
213 """Starts a new remote helper for the specified repository.
216 if len(args) != 3:
217 die("Expecting exactly three arguments.")
218 sys.exit(1)
220 if os.getenv("GIT_DEBUG_TESTGIT"):
221 import git_remote_helpers.util
222 git_remote_helpers.util.DEBUG = True
224 alias = sanitize(args[1])
225 url = sanitize(args[2])
227 if not alias.isalnum():
228 warn("non-alnum alias '%s'", alias)
229 alias = "tmp"
231 args[1] = alias
232 args[2] = url
234 repo = get_repo(alias, url)
236 debug("Got arguments %s", args[1:])
238 more = True
240 while (more):
241 more = read_one_line(repo)
243 if __name__ == '__main__':
244 sys.exit(main(sys.argv))