"""
import sys, os, popen2, re, gitmergeonefile
+from shutil import copyfile
from stgit import basedir
from stgit.utils import *
+from stgit.config import config
+from sets import Set
# git exception class
class GitException(Exception):
#
# Classes
#
+
+class Person:
+ """An author, committer, etc."""
+ def __init__(self, name = None, email = None, date = '',
+ desc = None):
+ self.name = self.email = self.date = None
+ if name or email or date:
+ assert not desc
+ self.name = name
+ self.email = email
+ self.date = date
+ elif desc:
+ assert not (name or email or date)
+ def parse_desc(s):
+ m = re.match(r'^(.+)<(.+)>(.*)$', s)
+ assert m
+ return [x.strip() or None for x in m.groups()]
+ self.name, self.email, self.date = parse_desc(desc)
+ def set_name(self, val):
+ if val:
+ self.name = val
+ def set_email(self, val):
+ if val:
+ self.email = val
+ def set_date(self, val):
+ if val:
+ self.date = val
+ def __str__(self):
+ if self.name and self.email:
+ return '%s <%s>' % (self.name, self.email)
+ else:
+ raise GitException, 'not enough identity data'
+
class Commit:
"""Handle the commit objects
"""
self.__id_hash = id_hash
lines = _output_lines('git-cat-file commit %s' % id_hash)
- self.__parents = []
for i in range(len(lines)):
line = lines[i]
if line == '\n':
field = line.strip().split(' ', 1)
if field[0] == 'tree':
self.__tree = field[1]
- elif field[0] == 'parent':
- self.__parents.append(field[1])
if field[0] == 'author':
self.__author = field[1]
if field[0] == 'committer':
return self.__tree
def get_parent(self):
- return self.__parents[0]
+ parents = self.get_parents()
+ if parents:
+ return parents[0]
+ else:
+ return None
def get_parents(self):
- return self.__parents
+ return _output_lines('git-rev-list --parents --max-count=1 %s'
+ % self.__id_hash)[0].split()[1:]
def get_author(self):
return self.__author
def get_log(self):
return self.__log
+ def __str__(self):
+ return self.get_id_hash()
+
# dictionary of Commit objects, used to avoid multiple calls to git
__commits = dict()
p.tochild.write(line)
p.tochild.close()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
+
+def _input_str(cmd, string):
+ p = popen2.Popen3(cmd, True)
+ p.tochild.write(string)
+ p.tochild.close()
+ if p.wait():
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
def _output(cmd):
p=popen2.Popen3(cmd, True)
output = p.fromchild.read()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
return output
def _output_one_line(cmd, file_desc = None):
p.tochild.close()
output = p.fromchild.readline().strip()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
return output
def _output_lines(cmd):
p=popen2.Popen3(cmd, True)
lines = p.fromchild.readlines()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
return lines
def __run(cmd, args=None):
return 0
def __tree_status(files = None, tree_id = 'HEAD', unknown = False,
- noexclude = True):
+ noexclude = True, verbose = False):
"""Returns a list of pairs - [status, filename]
"""
+ if verbose and sys.stdout.isatty():
+ print 'Checking for changes in the working directory...',
+ sys.stdout.flush()
+
refresh_index()
if not files:
cache_files += [('C', filename) for filename in conflicts]
# the rest
- for line in _output_lines(['git-diff-index', tree_id] + files):
+ for line in _output_lines(['git-diff-index', tree_id, '--'] + files):
fs = tuple(line.rstrip().split(' ',4)[-1].split('\t',1))
if fs[1] not in conflicts:
cache_files.append(fs)
+ if verbose and sys.stdout.isatty():
+ print 'done'
+
return cache_files
-def local_changes():
+def local_changes(verbose = True):
"""Return true if there are local changes in the tree
"""
- return len(__tree_status()) != 0
+ return len(__tree_status(verbose = verbose)) != 0
# HEAD value cached
__head = None
def get_head_file():
"""Returns the name of the file pointed to by the HEAD link
"""
- return os.path.basename(_output_one_line('git-symbolic-ref HEAD'))
+ return strip_prefix('refs/heads/',
+ _output_one_line('git-symbolic-ref HEAD'))
def set_head_file(ref):
"""Resets HEAD to point to a new ref
# head cache flushing is needed since we might have a different value
# in the new head
__clear_head_cache()
- if __run('git-symbolic-ref HEAD', [ref]) != 0:
+ if __run('git-symbolic-ref HEAD',
+ [os.path.join('refs', 'heads', ref)]) != 0:
raise GitException, 'Could not set head to "%s"' % ref
+def set_branch(branch, val):
+ """Point branch at a new commit object."""
+ if __run('git-update-ref', [branch, val]) != 0:
+ raise GitException, 'Could not update %s to "%s".' % (branch, val)
+
def __set_head(val):
"""Sets the HEAD value
"""
global __head
if not __head or __head != val:
- if __run('git-update-ref HEAD', [val]) != 0:
- raise GitException, 'Could not update HEAD to "%s".' % val
+ set_branch('HEAD', val)
__head = val
# only allow SHA1 hashes
def branch_exists(branch):
"""Existence check for the named branch
"""
- for line in _output_lines(['git-rev-parse', '--symbolic', '--all']):
+ branch = os.path.join('refs', 'heads', branch)
+ for line in _output_lines('git-rev-parse --symbolic --all 2>&1'):
if line.strip() == branch:
return True
+ if re.compile('[ |/]'+branch+' ').search(line):
+ raise GitException, 'Bogus branch: %s' % line
return False
def create_branch(new_branch, tree_id = None):
"""Create a new branch in the git repository
"""
- new_head = os.path.join('refs', 'heads', new_branch)
- if branch_exists(new_head):
+ if branch_exists(new_branch):
raise GitException, 'Branch "%s" already exists' % new_branch
current_head = get_head()
- set_head_file(new_head)
+ set_head_file(new_branch)
__set_head(current_head)
# a checkout isn't needed if new branch points to the current head
if os.path.isfile(os.path.join(basedir.get(), 'MERGE_HEAD')):
os.remove(os.path.join(basedir.get(), 'MERGE_HEAD'))
-def switch_branch(name):
+def switch_branch(new_branch):
"""Switch to a git branch
"""
global __head
- new_head = os.path.join('refs', 'heads', name)
- if not branch_exists(new_head):
- raise GitException, 'Branch "%s" does not exist' % name
+ if not branch_exists(new_branch):
+ raise GitException, 'Branch "%s" does not exist' % new_branch
- tree_id = rev_parse(new_head + '^{commit}')
+ tree_id = rev_parse(os.path.join('refs', 'heads', new_branch)
+ + '^{commit}')
if tree_id != get_head():
refresh_index()
if __run('git-read-tree -u -m', [get_head(), tree_id]) != 0:
raise GitException, 'git-read-tree failed (local changes maybe?)'
__head = tree_id
- set_head_file(new_head)
+ set_head_file(new_branch)
if os.path.isfile(os.path.join(basedir.get(), 'MERGE_HEAD')):
os.remove(os.path.join(basedir.get(), 'MERGE_HEAD'))
def delete_branch(name):
"""Delete a git branch
"""
- branch_head = os.path.join('refs', 'heads', name)
- if not branch_exists(branch_head):
+ if not branch_exists(name):
raise GitException, 'Branch "%s" does not exist' % name
- os.remove(os.path.join(basedir.get(), branch_head))
+ remove_file_and_dirs(os.path.join(basedir.get(), 'refs', 'heads'),
+ name)
def rename_branch(from_name, to_name):
"""Rename a git branch
"""
- from_head = os.path.join('refs', 'heads', from_name)
- if not branch_exists(from_head):
+ if not branch_exists(from_name):
raise GitException, 'Branch "%s" does not exist' % from_name
- to_head = os.path.join('refs', 'heads', to_name)
- if branch_exists(to_head):
+ if branch_exists(to_name):
raise GitException, 'Branch "%s" already exists' % to_name
if get_head_file() == from_name:
- set_head_file(to_head)
- os.rename(os.path.join(basedir.get(), from_head), \
- os.path.join(basedir.get(), to_head))
+ set_head_file(to_name)
+ rename(os.path.join(basedir.get(), 'refs', 'heads'),
+ from_name, to_name)
+
+ reflog_dir = os.path.join(basedir.get(), 'logs', 'refs', 'heads')
+ if os.path.exists(reflog_dir) \
+ and os.path.exists(os.path.join(reflog_dir, from_name)):
+ rename(reflog_dir, from_name, to_name)
def add(names):
"""Add the files or recursively add the directory contents
if __run('git-update-index --add --', files):
raise GitException, 'Unable to add file'
+def __copy_single(source, target, target2=''):
+ """Copy file or dir named 'source' to name target+target2"""
+
+ # "source" (file or dir) must match one or more git-controlled file
+ realfiles = _output_lines(['git-ls-files', source])
+ if len(realfiles) == 0:
+ raise GitException, '"%s" matches no git-controled files' % source
+
+ if os.path.isdir(source):
+ # physically copy the files, and record them to add them in one run
+ newfiles = []
+ re_string='^'+source+'/(.*)$'
+ prefix_regexp = re.compile(re_string)
+ for f in [f.strip() for f in realfiles]:
+ m = prefix_regexp.match(f)
+ if not m:
+ print '"%s" does not match "%s"' % (f, re_string)
+ assert(m)
+ newname = target+target2+'/'+m.group(1)
+ if not os.path.exists(os.path.dirname(newname)):
+ os.makedirs(os.path.dirname(newname))
+ copyfile(f, newname)
+ newfiles.append(newname)
+
+ add(newfiles)
+ else: # files, symlinks, ...
+ newname = target+target2
+ copyfile(source, newname)
+ add([newname])
+
+
+def copy(filespecs, target):
+ if os.path.isdir(target):
+ # target is a directory: copy each entry on the command line,
+ # with the same name, into the target
+ target = target.rstrip('/')
+
+ # first, check that none of the children of the target
+ # matching the command line aleady exist
+ for filespec in filespecs:
+ entry = target+ '/' + os.path.basename(filespec.rstrip('/'))
+ if os.path.exists(entry):
+ raise GitException, 'Target "%s" already exists' % entry
+
+ for filespec in filespecs:
+ filespec = filespec.rstrip('/')
+ basename = '/' + os.path.basename(filespec)
+ __copy_single(filespec, target, basename)
+
+ elif os.path.exists(target):
+ raise GitException, 'Target "%s" exists but is not a directory' % target
+ elif len(filespecs) != 1:
+ raise GitException, 'Cannot copy more than one file to non-directory'
+
+ else:
+ # at this point: len(filespecs)==1 and target does not exist
+
+ # check target directory
+ targetdir = os.path.dirname(target)
+ if targetdir != '' and not os.path.isdir(targetdir):
+ raise GitException, 'Target directory "%s" does not exist' % targetdir
+
+ __copy_single(filespecs[0].rstrip('/'), target)
+
+
def rm(files, force = False):
"""Remove a file from the repository
"""
if files:
__run('git-update-index --force-remove --', files)
+# Persons caching
+__user = None
+__author = None
+__committer = None
+
+def user():
+ """Return the user information.
+ """
+ global __user
+ if not __user:
+ name=config.get('user.name')
+ email=config.get('user.email')
+ __user = Person(name, email)
+ return __user;
+
+def author():
+ """Return the author information.
+ """
+ global __author
+ if not __author:
+ try:
+ # the environment variables take priority over config
+ try:
+ date = os.environ['GIT_AUTHOR_DATE']
+ except KeyError:
+ date = ''
+ __author = Person(os.environ['GIT_AUTHOR_NAME'],
+ os.environ['GIT_AUTHOR_EMAIL'],
+ date)
+ except KeyError:
+ __author = user()
+ return __author
+
+def committer():
+ """Return the author information.
+ """
+ global __committer
+ if not __committer:
+ try:
+ # the environment variables take priority over config
+ try:
+ date = os.environ['GIT_COMMITTER_DATE']
+ except KeyError:
+ date = ''
+ __committer = Person(os.environ['GIT_COMMITTER_NAME'],
+ os.environ['GIT_COMMITTER_EMAIL'],
+ date)
+ except KeyError:
+ __committer = user()
+ return __committer
+
def update_cache(files = None, force = False):
"""Update the cache information for the given files
"""
if not files:
files = []
- cache_files = __tree_status(files)
+ cache_files = __tree_status(files, verbose = False)
# everything is up-to-date
if len(cache_files) == 0:
raise GitException, 'No changes to commit'
# get the commit message
- if message[-1:] != '\n':
+ if not message:
+ message = '\n'
+ elif message[-1:] != '\n':
message += '\n'
must_switch = True
return commit_id
-def apply_diff(rev1, rev2, check_index = True):
+def apply_diff(rev1, rev2, check_index = True, files = None):
"""Apply the diff between rev1 and rev2 onto the current
index. This function doesn't need to raise an exception since it
is only used for fast-pushing a patch. If this operation fails,
index_opt = '--index'
else:
index_opt = ''
- cmd = 'git-diff-tree -p %s %s | git-apply %s 2> /dev/null' \
- % (rev1, rev2, index_opt)
- return os.system(cmd) == 0
+ if not files:
+ files = []
+
+ diff_str = diff(files, rev1, rev2)
+ if diff_str:
+ try:
+ _input_str('git-apply %s' % index_opt, diff_str)
+ except GitException:
+ return False
-def merge(base, head1, head2):
+ return True
+
+def merge(base, head1, head2, recursive = False):
"""Perform a 3-way merge between base, head1 and head2 into the
local tree
"""
refresh_index()
- if __run('git-read-tree -u -m --aggressive', [base, head1, head2]) != 0:
- raise GitException, 'git-read-tree failed (local changes maybe?)'
+
+ err_output = None
+ if recursive:
+ # this operation tracks renames but it is slower (used in
+ # general when pushing or picking patches)
+ try:
+ # use _output() to mask the verbose prints of the tool
+ _output('git-merge-recursive %s -- %s %s' % (base, head1, head2))
+ except GitException, ex:
+ err_output = str(ex)
+ pass
+ else:
+ # the fast case where we don't track renames (used when the
+ # distance between base and heads is small, i.e. folding or
+ # synchronising patches)
+ if __run('git-read-tree -u -m --aggressive',
+ [base, head1, head2]) != 0:
+ raise GitException, 'git-read-tree failed (local changes maybe?)'
# check the index for unmerged entries
files = {}
files[path][stage] = (mode, hash)
+ if err_output and not files:
+ # if no unmerged files, there was probably a different type of
+ # error and we have to abort the merge
+ raise GitException, err_output
+
# merge the unmerged files
errors = False
for path in files:
+ # remove additional files that might be generated for some
+ # newer versions of GIT
+ for suffix in [base, head1, head2]:
+ if not suffix:
+ continue
+ fname = path + '~' + suffix
+ if os.path.exists(fname):
+ os.remove(fname)
+
stages = files[path]
if gitmergeonefile.merge(stages['1'][1], stages['2'][1],
stages['3'][1], path, stages['1'][0],
cache_files = [x for x in cache_files if x[0] in filestat]
for fs in cache_files:
+ if files and not fs[1] in files:
+ continue
if all:
print '%s %s' % (fs[0], fs[1])
else:
print '%s' % fs[1]
-def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None):
+def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None,
+ binary = False):
"""Show the diff between rev1 and rev2
"""
if not files:
files = []
+ args = []
+ if binary:
+ args.append('--binary')
+
if rev1 and rev2:
- diff_str = _output(['git-diff-tree', '-p', rev1, rev2] + files)
+ diff_str = _output(['git-diff-tree', '-p'] + args
+ + [rev1, rev2, '--'] + files)
elif rev1 or rev2:
refresh_index()
if rev2:
- diff_str = _output(['git-diff-index', '-p', '-R', rev2] + files)
+ diff_str = _output(['git-diff-index', '-p', '-R']
+ + args + [rev2, '--'] + files)
else:
- diff_str = _output(['git-diff-index', '-p', rev1] + files)
+ diff_str = _output(['git-diff-index', '-p']
+ + args + [rev1, '--'] + files)
else:
diff_str = ''
return result.rstrip()
+def pretty_commit(commit_id = 'HEAD'):
+ """Return a given commit (log + diff)
+ """
+ return _output(['git-diff-tree', '--cc', '--always', '--pretty', '-r',
+ commit_id])
+
def checkout(files = None, tree_id = None, force = False):
"""Check out the given or all files
"""
if not files:
files = []
- if tree_id and __run('git-read-tree -m', [tree_id]) != 0:
- raise GitException, 'Failed git-read-tree -m %s' % tree_id
+ if tree_id and __run('git-read-tree --reset', [tree_id]) != 0:
+ raise GitException, 'Failed git-read-tree --reset %s' % tree_id
checkout_cmd = 'git-checkout-index -q -u'
if force:
if __run(checkout_cmd, files) != 0:
raise GitException, 'Failed git-checkout-index'
-def switch(tree_id):
+def switch(tree_id, keep = False):
"""Switch the tree to the given id
"""
- refresh_index()
- if __run('git-read-tree -u -m', [get_head(), tree_id]) != 0:
- raise GitException, 'git-read-tree failed (local changes maybe?)'
+ if not keep:
+ refresh_index()
+ if __run('git-read-tree -u -m', [get_head(), tree_id]) != 0:
+ raise GitException, 'git-read-tree failed (local changes maybe?)'
__set_head(tree_id)
-def reset(files = None, tree_id = None):
+def reset(files = None, tree_id = None, check_out = True):
"""Revert the tree changes relative to the given tree_id. It removes
any local changes
"""
if not tree_id:
tree_id = get_head()
- checkout(files, tree_id, True)
+ if check_out:
+ cache_files = __tree_status(files, tree_id)
+ # files which were added but need to be removed
+ rm_files = [x[1] for x in cache_files if x[0] in ['A']]
+
+ checkout(files, tree_id, True)
+ # checkout doesn't remove files
+ map(os.remove, rm_files)
# if the reset refers to the whole tree, switch the HEAD as well
if not files:
__set_head(tree_id)
+def fetch(repository = 'origin', refspec = None):
+ """Fetches changes from the remote repository, using 'git-fetch'
+ by default.
+ """
+ # we update the HEAD
+ __clear_head_cache()
+
+ args = [repository]
+ if refspec:
+ args.append(refspec)
+
+ command = config.get('branch.%s.stgit.fetchcmd' % get_head_file()) or \
+ config.get('stgit.fetchcmd')
+ if __run(command, args) != 0:
+ raise GitException, 'Failed "%s %s"' % (command, repository)
+
def pull(repository = 'origin', refspec = None):
- """Pull changes from the remote repository. At the moment, just
- use the 'git pull' command
+ """Fetches changes from the remote repository, using 'git-pull'
+ by default.
"""
- # 'git pull' updates the HEAD
+ # we update the HEAD
__clear_head_cache()
args = [repository]
if refspec:
args.append(refspec)
- if __run('git pull', args) != 0:
- raise GitException, 'Failed "git pull %s"' % repository
+ command = config.get('branch.%s.stgit.pullcmd' % get_head_file()) or \
+ config.get('stgit.pullcmd')
+ if __run(command, args) != 0:
+ raise GitException, 'Failed "%s %s"' % (command, repository)
-def apply_patch(filename = None, base = None):
+def repack():
+ """Repack all objects into a single pack
+ """
+ __run('git-repack -a -d -f')
+
+def apply_patch(filename = None, diff = None, base = None,
+ fail_dump = True):
"""Apply a patch onto the current or given index. There must not
be any local changes in the tree, otherwise the command fails
"""
- def __apply_patch():
+ if diff is None:
if filename:
- return __run('git-apply --index', [filename]) == 0
+ f = file(filename)
else:
- try:
- _input('git-apply --index', sys.stdin)
- except GitException:
- return False
- return True
+ f = sys.stdin
+ diff = f.read()
+ if filename:
+ f.close()
if base:
orig_head = get_head()
switch(base)
else:
- refresh_index() # needed since __apply_patch() doesn't do it
+ refresh_index()
- if not __apply_patch():
+ try:
+ _input_str('git-apply --index', diff)
+ except GitException:
if base:
switch(orig_head)
- raise GitException, 'Patch does not apply cleanly'
- elif base:
+ if fail_dump:
+ # write the failed diff to a file
+ f = file('.stgit-failed.patch', 'w+')
+ f.write(diff)
+ f.close()
+ print >> sys.stderr, 'Diff written to the .stgit-failed.patch file'
+
+ raise
+
+ if base:
top = commit(message = 'temporary commit used for applying a patch',
parents = [base])
switch(orig_head)
def clone(repository, local_dir):
"""Clone a remote repository. At the moment, just use the
- 'git clone' script
+ 'git-clone' script
"""
- if __run('git clone', [repository, local_dir]) != 0:
- raise GitException, 'Failed "git clone %s %s"' \
+ if __run('git-clone', [repository, local_dir]) != 0:
+ raise GitException, 'Failed "git-clone %s %s"' \
% (repository, local_dir)
-def modifying_revs(files, base_rev):
+def modifying_revs(files, base_rev, head_rev):
"""Return the revisions from the list modifying the given files
"""
- cmd = ['git-rev-list', '%s..' % base_rev, '--']
+ cmd = ['git-rev-list', '%s..%s' % (base_rev, head_rev), '--']
revs = [line.strip() for line in _output_lines(cmd + files)]
return revs
+
+
+def refspec_localpart(refspec):
+ m = re.match('^[^:]*:([^:]*)$', refspec)
+ if m:
+ return m.group(1)
+ else:
+ raise GitException, 'Cannot parse refspec "%s"' % line
+
+def refspec_remotepart(refspec):
+ m = re.match('^([^:]*):[^:]*$', refspec)
+ if m:
+ return m.group(1)
+ else:
+ raise GitException, 'Cannot parse refspec "%s"' % line
+
+
+def __remotes_from_config():
+ return config.sections_matching(r'remote\.(.*)\.url')
+
+def __remotes_from_dir(dir):
+ d = os.path.join(basedir.get(), dir)
+ if os.path.exists(d):
+ return os.listdir(d)
+ else:
+ return None
+
+def remotes_list():
+ """Return the list of remotes in the repository
+ """
+
+ return Set(__remotes_from_config()) | \
+ Set(__remotes_from_dir('remotes')) | \
+ Set(__remotes_from_dir('branches'))
+
+def remotes_local_branches(remote):
+ """Returns the list of local branches fetched from given remote
+ """
+
+ branches = []
+ if remote in __remotes_from_config():
+ for line in config.getall('remote.%s.fetch' % remote):
+ branches.append(refspec_localpart(line))
+ elif remote in __remotes_from_dir('remotes'):
+ stream = open(os.path.join(basedir.get(), 'remotes', remote), 'r')
+ for line in stream:
+ # Only consider Pull lines
+ m = re.match('^Pull: (.*)\n$', line)
+ if m:
+ branches.append(refspec_localpart(m.group(1)))
+ stream.close()
+ elif remote in __remotes_from_dir('branches'):
+ # old-style branches only declare one branch
+ branches.append('refs/heads/'+remote);
+ else:
+ raise GitException, 'Unknown remote "%s"' % remote
+
+ return branches
+
+def identify_remote(branchname):
+ """Return the name for the remote to pull the given branchname
+ from, or None if we believe it is a local branch.
+ """
+
+ for remote in remotes_list():
+ if branchname in remotes_local_branches(remote):
+ return remote
+
+ # if we get here we've found nothing, the branch is a local one
+ return None
+
+def fetch_head():
+ """Return the git id for the tip of the parent branch as left by
+ 'git fetch'.
+ """
+
+ fetch_head=None
+ stream = open(os.path.join(basedir.get(), 'FETCH_HEAD'), "r")
+ for line in stream:
+ # Only consider lines not tagged not-for-merge
+ m = re.match('^([^\t]*)\t\t', line)
+ if m:
+ if fetch_head:
+ raise GitException, "StGit does not support multiple FETCH_HEAD"
+ else:
+ fetch_head=m.group(1)
+ stream.close()
+
+ # here we are sure to have a single fetch_head
+ return fetch_head
~mdw / stgit / blobdiff