Initial directory restructuring to clarify dependencies

1 files changed, 151 insertions, 0 deletions

diff --git a/libbe/storage/vcs/git.py b/libbe/storage/vcs/git.py
new file mode 100644
index 0000000..7f6e53a
--- /dev/null
+++ b/libbe/storage/vcs/git.py
@@ -0,0 +1,151 @@
+# Copyright (C) 2008-2009 Ben Finney <benf@cybersource.com.au>
+#                         Chris Ball <cjb@laptop.org>
+#                         Gianluca Montecchi <gian@grys.it>
+#                         W. Trevor King <wking@drexel.edu>
+#
+# 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.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+"""
+Git backend.
+"""
+
+import os
+import re
+import sys
+import unittest
+
+import libbe
+import vcs
+if libbe.TESTING == True:
+    import doctest
+
+
+def new():
+    return Git()
+
+class Git(vcs.VCS):
+    name="git"
+    client="git"
+    versioned=True
+    def _vcs_version(self):
+        status,output,error = self._u_invoke_client("--version")
+        return output
+    def _vcs_detect(self, path):
+        if self._u_search_parent_directories(path, ".git") != None :
+            return True
+        return False 
+    def _vcs_root(self, 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.
+        if os.path.isdir(path) != True:
+            path = os.path.dirname(path)
+        status,output,error = self._u_invoke_client("rev-parse", "--git-dir",
+                                                    cwd=path)
+        gitdir = os.path.join(path, output.rstrip('\n'))
+        dirname = os.path.abspath(os.path.dirname(gitdir))
+        return dirname
+    def _vcs_init(self, path):
+        self._u_invoke_client("init", cwd=path)
+    def _vcs_get_user_id(self):
+        status,output,error = \
+            self._u_invoke_client("config", "user.name", expect=(0,1))
+        if status == 0:
+            name = output.rstrip('\n')
+        else:
+            name = ""
+        status,output,error = \
+            self._u_invoke_client("config", "user.email", expect=(0,1))
+        if status == 0:
+            email = output.rstrip('\n')
+        else:
+            email = ""
+        if name != "" or email != "": # got something!
+            # guess missing info, if necessary
+            if name == "":
+                name = self._u_get_fallback_username()
+            if email == "":
+                email = self._u_get_fallback_email()
+            return self._u_create_id(name, email)
+        return None # Git has no infomation
+    def _vcs_set_user_id(self, value):
+        name,email = self._u_parse_id(value)
+        if email != None:
+            self._u_invoke_client("config", "user.email", email)
+        self._u_invoke_client("config", "user.name", name)
+    def _vcs_add(self, path):
+        if os.path.isdir(path):
+            return
+        self._u_invoke_client("add", path)
+    def _vcs_remove(self, path):
+        if not os.path.isdir(self._u_abspath(path)):
+            self._u_invoke_client("rm", "-f", path)
+    def _vcs_update(self, path):
+        self._vcs_add(path)
+    def _vcs_get_file_contents(self, path, revision=None, binary=False):
+        if revision == None:
+            return vcs.VCS._vcs_get_file_contents(self, path, revision, binary=binary)
+        else:
+            arg = "%s:%s" % (revision,path)
+            status,output,error = self._u_invoke_client("show", arg)
+            return output
+    def _vcs_duplicate_repo(self, directory, revision=None):
+        if revision==None:
+            vcs.VCS._vcs_duplicate_repo(self, directory, revision)
+        else:
+            self._u_invoke_client("clone", "--no-checkout", ".", directory)
+            self._u_invoke_client("checkout", revision, cwd=directory)
+    def _vcs_commit(self, commitfile, allow_empty=False):
+        args = ['commit', '--all', '--file', commitfile]
+        if allow_empty == True:
+            args.append("--allow-empty")
+            status,output,error = self._u_invoke_client(*args)
+        else:
+            kwargs = {"expect":(0,1)}
+            status,output,error = self._u_invoke_client(*args, **kwargs)
+            strings = ["nothing to commit",
+                       "nothing added to commit"]
+            if self._u_any_in_string(strings, output) == True:
+                raise vcs.EmptyCommit()
+        revision = None
+        revline = re.compile("(.*) (.*)[:\]] (.*)")
+        match = revline.search(output)
+        assert match != None, output+error
+        assert len(match.groups()) == 3
+        revision = match.groups()[1]
+        full_revision = self._vcs_revision_id(-1)
+        assert full_revision.startswith(revision), \
+            "Mismatched revisions:\n%s\n%s" % (revision, full_revision)
+        return full_revision
+    def _vcs_revision_id(self, index):
+        args = ["rev-list", "--first-parent", "--reverse", "HEAD"]
+        kwargs = {"expect":(0,128)}
+        status,output,error = self._u_invoke_client(*args, **kwargs)
+        if status == 128:
+            if error.startswith("fatal: ambiguous argument 'HEAD': unknown "):
+                return None
+            raise vcs.CommandError(args, status, stderr=error)
+        commits = output.splitlines()
+        try:
+            return commits[index]
+        except IndexError:
+            return None
+
+    
+if libbe.TESTING == True:
+    vcs.make_vcs_testcase_subclasses(Git, sys.modules[__name__])
+
+    unitsuite =unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
+    suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])