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# Copyright (C) 2005-2010 Aaron Bentley and Panometrics, Inc.
# Ben Finney <benf@cybersource.com.au>
# Gianluca Montecchi <gian@grys.it>
# Marien Zwart <marienz@gentoo.org>
# 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.
"""
Bazaar (bzr) backend.
"""
try:
import bzrlib
import bzrlib.branch
import bzrlib.builtins
import bzrlib.config
import bzrlib.errors
import bzrlib.option
except ImportError:
bzrlib = None
import os
import os.path
import re
import shutil
import StringIO
import sys
import libbe
import base
if libbe.TESTING == True:
import doctest
import unittest
def new():
return Bzr()
class Bzr(base.VCS):
name = 'bzr'
client = None # bzrlib module
def __init__(self, *args, **kwargs):
base.VCS.__init__(self, *args, **kwargs)
self.versioned = True
def _vcs_version(self):
if bzrlib == None:
return None
return bzrlib.__version__
def _vcs_get_user_id(self):
# excerpted from bzrlib.builtins.cmd_whoami.run()
try:
c = bzrlib.branch.Branch.open_containing(self.repo)[0].get_config()
except errors.NotBranchError:
c = bzrlib.config.GlobalConfig()
return c.username()
def _vcs_detect(self, path):
if self._u_search_parent_directories(path, '.bzr') != None :
return True
return False
def _vcs_root(self, path):
"""Find the root of the deepest repository containing path."""
cmd = bzrlib.builtins.cmd_root()
cmd.outf = StringIO.StringIO()
cmd.run(filename=path)
return cmd.outf.getvalue().rstrip('\n')
def _vcs_init(self, path):
cmd = bzrlib.builtins.cmd_init()
cmd.outf = StringIO.StringIO()
cmd.run(location=path)
def _vcs_destroy(self):
vcs_dir = os.path.join(self.repo, '.bzr')
if os.path.exists(vcs_dir):
shutil.rmtree(vcs_dir)
def _vcs_add(self, path):
path = os.path.join(self.repo, path)
cmd = bzrlib.builtins.cmd_add()
cmd.outf = StringIO.StringIO()
cmd.run(file_list=[path], file_ids_from=self.repo)
def _vcs_remove(self, path):
# --force to also remove unversioned files.
path = os.path.join(self.repo, path)
cmd = bzrlib.builtins.cmd_remove()
cmd.outf = StringIO.StringIO()
cmd.run(file_list=[path], file_deletion_strategy='force')
def _vcs_update(self, path):
pass
def _parse_revision_string(self, revision=None):
if revision == None:
return revision
rev_opt = bzrlib.option.Option.OPTIONS['revision']
try:
rev_spec = rev_opt.type(revision)
except bzrlib.errors.NoSuchRevisionSpec:
raise base.InvalidRevision(revision)
return rev_spec
def _vcs_get_file_contents(self, path, revision=None):
if revision == None:
return base.VCS._vcs_get_file_contents(self, path, revision)
path = os.path.join(self.repo, path)
revision = self._parse_revision_string(revision)
cmd = bzrlib.builtins.cmd_cat()
cmd.outf = StringIO.StringIO()
try:
cmd.run(filename=path, revision=revision)
except bzrlib.errors.BzrCommandError, e:
if 'not present in revision' in str(e):
raise base.InvalidPath(path, root=self.repo, revision=revision)
raise
return cmd.outf.getvalue()
def _vcs_path(self, id, revision):
return self._u_find_id(id, revision)
def _vcs_isdir(self, path, revision):
try:
self._vcs_listdir(path, revision)
except AttributeError, e:
if 'children' in str(e):
return False
raise
return True
def _vcs_listdir(self, path, revision):
path = os.path.join(self.repo, path)
revision = self._parse_revision_string(revision)
cmd = bzrlib.builtins.cmd_ls()
cmd.outf = StringIO.StringIO()
try:
cmd.run(revision=revision, path=path)
except bzrlib.errors.BzrCommandError, e:
if 'not present in revision' in str(e):
raise base.InvalidPath(path, root=self.repo, revision=revision)
raise
children = cmd.outf.getvalue().rstrip('\n').splitlines()
children = [self._u_rel_path(c, path) for c in children]
return children
def _vcs_commit(self, commitfile, allow_empty=False):
cmd = bzrlib.builtins.cmd_commit()
cmd.outf = StringIO.StringIO()
cwd = os.getcwd()
os.chdir(self.repo)
try:
cmd.run(file=commitfile, unchanged=allow_empty)
except bzrlib.errors.BzrCommandError, e:
strings = ['no changes to commit.', # bzr 1.3.1
'No changes to commit.'] # bzr 1.15.1
if self._u_any_in_string(strings, str(e)) == True:
raise base.EmptyCommit()
raise
finally:
os.chdir(cwd)
return self._vcs_revision_id(-1)
def _vcs_revision_id(self, index):
cmd = bzrlib.builtins.cmd_revno()
cmd.outf = StringIO.StringIO()
cmd.run(location=self.repo)
current_revision = int(cmd.outf.getvalue())
if index > current_revision or index < -current_revision:
return None
if index >= 0:
return str(index) # bzr commit 0 is the empty tree.
return str(current_revision+index+1)
def _diff(self, revision):
revision = self._parse_revision_string(revision)
cmd = bzrlib.builtins.cmd_diff()
cmd.outf = StringIO.StringIO()
# for some reason, cmd_diff uses sys.stdout not self.outf for output.
stdout = sys.stdout
sys.stdout = cmd.outf
try:
status = cmd.run(revision=revision, file_list=[self.repo])
finally:
sys.stdout = stdout
assert status in [0,1], "Invalid status %d" % status
return cmd.outf.getvalue()
def _parse_diff(self, diff_text):
"""
Example diff text:
=== modified file 'dir/changed'
--- dir/changed 2010-01-16 01:54:53 +0000
+++ dir/changed 2010-01-16 01:54:54 +0000
@@ -1,3 +1,3 @@
hi
-there
+everyone and
joe
=== removed file 'dir/deleted'
--- dir/deleted 2010-01-16 01:54:53 +0000
+++ dir/deleted 1970-01-01 00:00:00 +0000
@@ -1,3 +0,0 @@
-in
-the
-beginning
=== removed file 'dir/moved'
--- dir/moved 2010-01-16 01:54:53 +0000
+++ dir/moved 1970-01-01 00:00:00 +0000
@@ -1,4 +0,0 @@
-the
-ants
-go
-marching
=== added file 'dir/moved2'
--- dir/moved2 1970-01-01 00:00:00 +0000
+++ dir/moved2 2010-01-16 01:54:34 +0000
@@ -0,0 +1,4 @@
+the
+ants
+go
+marching
=== added file 'dir/new'
--- dir/new 1970-01-01 00:00:00 +0000
+++ dir/new 2010-01-16 01:54:54 +0000
@@ -0,0 +1,2 @@
+hello
+world
"""
new = []
modified = []
removed = []
lines = diff_text.splitlines()
for i,line in enumerate(lines):
if not line.startswith('=== '):
continue
fields = line.split()
action = fields[1]
file = fields[-1].strip("'")
if action == 'added':
new.append(file)
elif action == 'modified':
modified.append(file)
elif action == 'removed':
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(Bzr, sys.modules[__name__])
unitsuite =unittest.TestLoader().loadTestsFromModule(sys.modules[__name__])
suite = unittest.TestSuite([unitsuite, doctest.DocTestSuite()])
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