--- /dev/null
+# Copyright (C) 2007 Chris Ball <chris@printf.net>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+import os
+import tempfile
+
+from rcs import invoke
+
+def strip_git(filename):
+ # Find the base path of the GIT tree, in order to strip that leading
+ # path from arguments to git -- it doesn't like absolute paths.
+ if os.path.isabs(filename):
+ filename = filename[len(git_repo_for_path('.'))+1:]
+ return filename
+
+def invoke_client(*args, **kwargs):
+ directory = kwargs['directory']
+ expect = kwargs.get('expect', (0, 1))
+ cl_args = ["git"]
+ cl_args.extend(args)
+ status,output,error = invoke(cl_args, expect, cwd=directory)
+ return status, output
+
+def add_id(filename, paranoid=False):
+ filename = strip_git(filename)
+ invoke_client("add", filename, directory=git_repo_for_path('.'))
+
+def delete_id(filename):
+ filename = strip_git(filename)
+ invoke_client("rm", filename, directory=git_repo_for_path('.'))
+
+def mkdir(path, paranoid=False):
+ os.mkdir(path)
+
+def set_file_contents(path, contents):
+ add = not os.path.exists(path)
+ file(path, "wb").write(contents)
+ if add:
+ add_id(path)
+
+def detect(path):
+ """Detect whether a directory is revision-controlled using GIT"""
+ path = os.path.realpath(path)
+ old_path = None
+ while True:
+ if os.path.exists(os.path.join(path, ".git")):
+ return True
+ if path == old_path:
+ return False
+ old_path = path
+ path = os.path.dirname(path)
+
+def precommit(directory):
+ pass
+
+def commit(directory, summary, body=None):
+ if body is not None:
+ summary += '\n' + body
+ descriptor, filename = tempfile.mkstemp()
+ try:
+ temp_file = os.fdopen(descriptor, 'wb')
+ temp_file.write(summary)
+ temp_file.close()
+ invoke_client('commit', '-a', '-F', filename, directory=directory)
+ finally:
+ os.unlink(filename)
+
+def postcommit(directory):
+ pass
+
+
+# In order to diff the bug database, you need a way to check out arbitrary
+# previous revisions and a mechanism for locating the bug_dir in the revision
+# you've checked out.
+#
+# Copying the Mercurial implementation, this feature is implemented by four
+# functions:
+#
+# git_dir_for_path : find '.git' for a git tree.
+#
+# export : check out a commit 'spec' from git-repo 'bug_dir' into a dir
+# 'revision_dir'
+#
+# find_or_make_export : check out a commit 'spec' from git repo 'directory' to
+# any location you please and return the path to the checkout
+#
+# path_in_reference : return a path to the bug_dir of the commit 'spec'
+
+def git_repo_for_path(path):
+ """Find the root of the deepest repository containing path."""
+ # Assume that nothing funny is going on; in particular, that we aren't
+ # dealing with a bare repo.
+ return os.path.dirname(git_dir_for_path(path))
+
+def git_dir_for_path(path):
+ """Find the git-dir of the deepest repo containing path."""
+ return invoke_client("rev-parse", "--git-dir", directory=path)[1].rstrip()
+
+def export(spec, bug_dir, revision_dir):
+ """Check out commit 'spec' from the git repo containing bug_dir into
+ 'revision_dir'."""
+ if not os.path.exists(revision_dir):
+ os.makedirs(revision_dir)
+ invoke_client("init", directory=revision_dir)
+ invoke_client("pull", git_dir_for_path(bug_dir), directory=revision_dir)
+ invoke_client("checkout", '-f', spec, directory=revision_dir)
+
+def find_or_make_export(spec, directory):
+ """Checkout 'spec' from the repo at 'directory' by hook or by crook and
+ return the path to the working copy."""
+ home = os.path.expanduser("~")
+ revision_root = os.path.join(home, ".be_revs")
+ if not os.path.exists(revision_root):
+ os.mkdir(revision_root)
+ revision_dir = os.path.join(revision_root, spec)
+ if not os.path.exists(revision_dir):
+ export(spec, directory, revision_dir)
+ return revision_dir
+
+def path_in_reference(bug_dir, spec):
+ """Check out 'spec' and return the path to its bug_dir."""
+ spec = spec or 'HEAD'
+ spec = invoke_client('rev-parse', spec, directory=bug_dir)[1].rstrip()
+ # This is a really hairy computation.
+ # The theory is that we can't possibly be working out of a bare repo;
+ # hence, we get the rel_bug_dir by chopping off dirname(git_dir_for_path(bug_dir))
+ # + '/'.
+ rel_bug_dir = strip_git(bug_dir)
+ export_root = find_or_make_export(spec, directory=bug_dir)
+ return os.path.join(export_root, rel_bug_dir)
+
+
+name = "git"
+
projects / be.git / commitdiff