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-rw-r--r--libbe/storage/vcs/git.py269
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diff --git a/libbe/storage/vcs/git.py b/libbe/storage/vcs/git.py
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+# Copyright (C) 2008-2010 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.
+
+.. _Git: http://git-scm.com/
+"""
+
+import os
+import os.path
+import re
+import shutil
+import unittest
+
+import libbe
+import libbe.ui.util.user
+import base
+
+if libbe.TESTING == True:
+ import doctest
+ import sys
+
+
+def new():
+ return Git()
+
+class Git(base.VCS):
+ """:class:`base.VCS` implementation for Git.
+ """
+ name='git'
+ client='git'
+
+ def __init__(self, *args, **kwargs):
+ base.VCS.__init__(self, *args, **kwargs)
+ self.versioned = True
+
+ def _vcs_version(self):
+ status,output,error = self._u_invoke_client('--version')
+ return output.strip()
+
+ 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 = libbe.ui.util.user.get_fallback_username()
+ if email == '':
+ email = libe.ui.util.user.get_fallback_email()
+ return libbe.ui.util.user.create_user_id(name, email)
+ return None # Git has no infomation
+
+ 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_destroy(self):
+ vcs_dir = os.path.join(self.repo, '.git')
+ if os.path.exists(vcs_dir):
+ shutil.rmtree(vcs_dir)
+
+ 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):
+ if revision == None:
+ return base.VCS._vcs_get_file_contents(self, path, revision)
+ else:
+ arg = '%s:%s' % (revision,path)
+ status,output,error = self._u_invoke_client('show', arg)
+ return output
+
+ def _vcs_path(self, id, revision):
+ return self._u_find_id(id, revision)
+
+ def _vcs_isdir(self, path, revision):
+ arg = '%s:%s' % (revision,path)
+ args = ['ls-tree', arg]
+ kwargs = {'expect':(0,128)}
+ status,output,error = self._u_invoke_client(*args, **kwargs)
+ if status != 0:
+ if 'not a tree object' in error:
+ return False
+ raise base.CommandError(args, status, stderr=error)
+ return True
+
+ def _vcs_listdir(self, path, revision):
+ arg = '%s:%s' % (revision,path)
+ status,output,error = self._u_invoke_client(
+ 'ls-tree', '--name-only', arg)
+ return output.rstrip('\n').splitlines()
+
+ 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 base.EmptyCommit()
+ full_revision = self._vcs_revision_id(-1)
+ assert full_revision[:7] in output, \
+ 'Mismatched revisions:\n%s\n%s' % (full_revision, output)
+ 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 base.CommandError(args, status, stderr=error)
+ revisions = output.splitlines()
+ try:
+ if index > 0:
+ return revisions[index-1]
+ elif index < 0:
+ return revisions[index]
+ else:
+ return None
+ except IndexError:
+ return None
+
+ def _diff(self, revision):
+ status,output,error = self._u_invoke_client('diff', revision)
+ return output
+
+ def _parse_diff(self, diff_text):
+ """_parse_diff(diff_text) -> (new,modified,removed)
+
+ `new`, `modified`, and `removed` are lists of files.
+
+ Example diff text::
+
+ diff --git a/dir/changed b/dir/changed
+ index 6c3ea8c..2f2f7c7 100644
+ --- a/dir/changed
+ +++ b/dir/changed
+ @@ -1,3 +1,3 @@
+ hi
+ -there
+ +everyone and
+ joe
+ diff --git a/dir/deleted b/dir/deleted
+ deleted file mode 100644
+ index 225ec04..0000000
+ --- a/dir/deleted
+ +++ /dev/null
+ @@ -1,3 +0,0 @@
+ -in
+ -the
+ -beginning
+ diff --git a/dir/moved b/dir/moved
+ deleted file mode 100644
+ index 5ef102f..0000000
+ --- a/dir/moved
+ +++ /dev/null
+ @@ -1,4 +0,0 @@
+ -the
+ -ants
+ -go
+ -marching
+ diff --git a/dir/moved2 b/dir/moved2
+ new file mode 100644
+ index 0000000..5ef102f
+ --- /dev/null
+ +++ b/dir/moved2
+ @@ -0,0 +1,4 @@
+ +the
+ +ants
+ +go
+ +marching
+ diff --git a/dir/new b/dir/new
+ new file mode 100644
+ index 0000000..94954ab
+ --- /dev/null
+ +++ b/dir/new
+ @@ -0,0 +1,2 @@
+ +hello
+ +world
+ """
+ new = []
+ modified = []
+ removed = []
+ lines = diff_text.splitlines()
+ for i,line in enumerate(lines):
+ if not line.startswith('diff '):
+ continue
+ file_a,file_b = line.split()[-2:]
+ assert file_a.startswith('a/'), \
+ 'missformed file_a %s' % file_a
+ assert file_b.startswith('b/'), \
+ 'missformed file_a %s' % file_b
+ file = file_a[2:]
+ assert file_b[2:] == file, \
+ 'diff file missmatch %s != %s' % (file_a, file_b)
+ if lines[i+1].startswith('new '):
+ new.append(file)
+ elif lines[i+1].startswith('index '):
+ modified.append(file)
+ elif lines[i+1].startswith('deleted '):
+ removed.append(file)
+ return (new,modified,removed)
+
+ def _vcs_changed(self, revision):
+ return self._parse_diff(self._diff(revision))
+
+
+if libbe.TESTING == True:
+ base.make_vcs_testcase_subclasses(Git, sys.modules[__name__])
+
+ unitsuite =unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
+ suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])
generated by cgit (git 2.34.1) at 2024-11-11 02:16:50 +0000