From 7aeaa2fc0abbf439534769e15b3a59a5814cc3d1 Mon Sep 17 00:00:00 2001 From: Sverre Rabbelier Date: Mon, 29 Mar 2010 11:48:28 -0500 Subject: remote-helpers: add testgit helper Currently the remote helper infrastructure is only used by the curl helper, which does not give a good impression of how remote helpers can be used to interact with foreign repositories. Since implementing such a helper is non-trivial it would be good to have at least one easy-to-follow example demonstrating how to implement a helper that interacts with a foreign vcs using fast-import/fast-export. The testgit helper can be used to interact with remote git repositories by prefixing the url with "testgit::". Signed-off-by: Junio C Hamano --- git_remote_helpers/git/repo.py | 70 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 70 insertions(+) create mode 100644 git_remote_helpers/git/repo.py (limited to 'git_remote_helpers/git/repo.py') diff --git a/git_remote_helpers/git/repo.py b/git_remote_helpers/git/repo.py new file mode 100644 index 0000000000..82d5f78c7e --- /dev/null +++ b/git_remote_helpers/git/repo.py @@ -0,0 +1,70 @@ +import os +import subprocess + +def sanitize(rev, sep='\t'): + """Converts a for-each-ref line to a name/value pair. + """ + + splitrev = rev.split(sep) + branchval = splitrev[0] + branchname = splitrev[1].strip() + if branchname.startswith("refs/heads/"): + branchname = branchname[11:] + + return branchname, branchval + +def is_remote(url): + """Checks whether the specified value is a remote url. + """ + + prefixes = ["http", "file", "git"] + + return any(url.startswith(i) for i in prefixes) + +class GitRepo(object): + """Repo object representing a repo. + """ + + def __init__(self, path): + """Initializes a new repo at the given path. + """ + + self.path = path + self.head = None + self.revmap = {} + self.local = not is_remote(self.path) + + if(self.path.endswith('.git')): + self.gitpath = self.path + else: + self.gitpath = os.path.join(self.path, '.git') + + if self.local and not os.path.exists(self.gitpath): + os.makedirs(self.gitpath) + + def get_revs(self): + """Fetches all revs from the remote. + """ + + args = ["git", "ls-remote", self.gitpath] + path = ".cached_revs" + ofile = open(path, "w") + + subprocess.check_call(args, stdout=ofile) + output = open(path).readlines() + self.revmap = dict(sanitize(i) for i in output) + if "HEAD" in self.revmap: + del self.revmap["HEAD"] + self.revs = self.revmap.keys() + ofile.close() + + def get_head(self): + """Determines the head of a local repo. + """ + + if not self.local: + return + + path = os.path.join(self.gitpath, "HEAD") + head = open(path).readline() + self.head, _ = sanitize(head, ' ') -- cgit v1.2.1 From 23b093ee087e99049585487f59e262a0e0662b6e Mon Sep 17 00:00:00 2001 From: Brandon Casey Date: Wed, 9 Jun 2010 19:24:54 -0500 Subject: Remove python 2.5'isms The following python 2.5 features were worked around: * the sha module is used as a fallback when the hashlib module is not available * the 'any' built-in method was replaced with a 'for' loop * a conditional expression was replaced with an 'if' statement * the subprocess.check_call method was replaced by a call to subprocess.Popen followed by a call to subprocess.wait with a check of its return status These changes allow the python infrastructure to be used with python 2.4 which is distributed with RedHat's RHEL 5, for example. t5800 was updated to check for python >= 2.4 to reflect these changes. Signed-off-by: Brandon Casey Signed-off-by: Junio C Hamano --- git_remote_helpers/git/repo.py | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-) (limited to 'git_remote_helpers/git/repo.py') diff --git a/git_remote_helpers/git/repo.py b/git_remote_helpers/git/repo.py index 82d5f78c7e..58e1cdb560 100644 --- a/git_remote_helpers/git/repo.py +++ b/git_remote_helpers/git/repo.py @@ -19,7 +19,10 @@ def is_remote(url): prefixes = ["http", "file", "git"] - return any(url.startswith(i) for i in prefixes) + for prefix in prefixes: + if url.startswith(prefix): + return True + return False class GitRepo(object): """Repo object representing a repo. @@ -50,7 +53,9 @@ class GitRepo(object): path = ".cached_revs" ofile = open(path, "w") - subprocess.check_call(args, stdout=ofile) + child = subprocess.Popen(args, stdout=ofile) + if child.wait() != 0: + raise CalledProcessError output = open(path).readlines() self.revmap = dict(sanitize(i) for i in output) if "HEAD" in self.revmap: -- cgit v1.2.1