Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
"""
-import sys, os, glob, popen2
+import sys, os, popen2, re, gitmergeonefile
+from stgit import basedir
from stgit.utils import *
+from stgit.config import config
# git exception class
class GitException(Exception):
pass
-# Different start-up variables read from the environment
-if 'GIT_DIR' in os.environ:
- base_dir = os.environ['GIT_DIR']
-else:
- base_dir = '.git'
-
-head_link = os.path.join(base_dir, 'HEAD')
#
# Classes
#
+
+class Person:
+ """An author, committer, etc."""
+ def __init__(self, name = None, email = None, date = '',
+ desc = 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':
self.__committer = field[1]
- self.__log = ''.join(lines[i:])
+ self.__log = ''.join(lines[i+1:])
def get_id_hash(self):
return self.__id_hash
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()
#
# Functions
#
+
def get_commit(id_hash):
"""Commit objects factory. Save/look-up them in the __commits
dictionary
"""
+ global __commits
+
if id_hash in __commits:
return __commits[id_hash]
else:
def get_conflicts():
"""Return the list of file conflicts
"""
- conflicts_file = os.path.join(base_dir, 'conflicts')
+ conflicts_file = os.path.join(basedir.get(), 'conflicts')
if os.path.isfile(conflicts_file):
f = file(conflicts_file)
names = [line.strip() for line in f.readlines()]
return None
def _input(cmd, file_desc):
- p = popen2.Popen3(cmd)
+ p = popen2.Popen3(cmd, True)
while True:
line = file_desc.readline()
if not line:
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)
- string = p.fromchild.read()
+ p=popen2.Popen3(cmd, True)
+ output = p.fromchild.read()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
- return string
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
+ return output
def _output_one_line(cmd, file_desc = None):
- p=popen2.Popen3(cmd)
+ p=popen2.Popen3(cmd, True)
if file_desc != None:
for line in file_desc:
p.tochild.write(line)
p.tochild.close()
- string = p.fromchild.readline().strip()
+ output = p.fromchild.readline().strip()
if p.wait():
- raise GitException, '%s failed' % str(cmd)
- return string
+ raise GitException, '%s failed (%s)' % (str(cmd),
+ p.childerr.read().strip())
+ return output
def _output_lines(cmd):
- p=popen2.Popen3(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 r
return 0
-def __check_base_dir():
- return os.path.isdir(base_dir)
-
-def __tree_status(files = [], tree_id = 'HEAD', unknown = False,
- noexclude = True):
+def __tree_status(files = None, tree_id = 'HEAD', unknown = False,
+ noexclude = True, verbose = False):
"""Returns a list of pairs - [status, filename]
"""
- os.system('git-update-index --refresh > /dev/null')
+ if verbose and sys.stdout.isatty():
+ print 'Checking for changes in the working directory...',
+ sys.stdout.flush()
+
+ refresh_index()
+ if not files:
+ files = []
cache_files = []
# unknown files
if unknown:
- exclude_file = os.path.join(base_dir, 'info', 'exclude')
+ exclude_file = os.path.join(basedir.get(), 'info', 'exclude')
base_exclude = ['--exclude=%s' % s for s in
['*.[ao]', '*.pyc', '.*', '*~', '#*', 'TAGS', 'tags']]
base_exclude.append('--exclude-per-directory=.gitignore')
if noexclude:
extra_exclude = base_exclude = []
- lines = _output_lines(['git-ls-files', '--others'] + base_exclude
- + extra_exclude)
+ lines = _output_lines(['git-ls-files', '--others', '--directory']
+ + base_exclude + extra_exclude)
cache_files += [('?', line.strip()) for line in lines]
# conflicted files
cache_files += [('C', filename) for filename in conflicts]
# the rest
- for line in _output_lines(['git-diff-index', '-r', 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():
- """Returns a string representing the HEAD
+ """Verifies the HEAD and returns the SHA1 id that represents it
"""
- return read_string(head_link)
+ global __head
+
+ if not __head:
+ __head = rev_parse('HEAD')
+ return __head
def get_head_file():
"""Returns the name of the file pointed to by the HEAD link
"""
- # valid link
- if os.path.islink(head_link) and os.path.isfile(head_link):
- return os.path.basename(os.readlink(head_link))
- else:
- raise GitException, 'Invalid .git/HEAD link. Git tree not initialised?'
+ 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',
+ [os.path.join('refs', 'heads', ref)]) != 0:
+ raise GitException, 'Could not set head to "%s"' % ref
def __set_head(val):
"""Sets the HEAD value
"""
- write_string(head_link, val)
+ 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
+ __head = val
+
+ # only allow SHA1 hashes
+ assert(len(__head) == 40)
+
+def __clear_head_cache():
+ """Sets the __head to None so that a re-read is forced
+ """
+ global __head
+
+ __head = None
+
+def refresh_index():
+ """Refresh index with stat() information from the working directory.
+ """
+ __run('git-update-index -q --unmerged --refresh')
def rev_parse(git_id):
- """Parse the string and return an SHA1 id
+ """Parse the string and return a verified SHA1 id
+ """
+ try:
+ return _output_one_line(['git-rev-parse', '--verify', git_id])
+ except GitException:
+ raise GitException, 'Unknown revision: %s' % git_id
+
+def branch_exists(branch):
+ """Existence check for the named branch
+ """
+ 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
"""
- return _output(['git-rev-parse', git_id]).strip()
+ if branch_exists(new_branch):
+ raise GitException, 'Branch "%s" already exists' % new_branch
+
+ current_head = get_head()
+ set_head_file(new_branch)
+ __set_head(current_head)
+
+ # a checkout isn't needed if new branch points to the current head
+ if tree_id:
+ switch(tree_id)
+
+ if os.path.isfile(os.path.join(basedir.get(), 'MERGE_HEAD')):
+ os.remove(os.path.join(basedir.get(), 'MERGE_HEAD'))
+
+def switch_branch(new_branch):
+ """Switch to a git branch
+ """
+ global __head
+
+ if not branch_exists(new_branch):
+ raise GitException, 'Branch "%s" does not exist' % new_branch
+
+ 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_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
+ """
+ if not branch_exists(name):
+ raise GitException, 'Branch "%s" does not exist' % name
+ remove_file_and_dirs(os.path.join(basedir.get(), 'refs', 'heads'),
+ name)
+
+def rename_branch(from_name, to_name):
+ """Rename a git branch
+ """
+ if not branch_exists(from_name):
+ raise GitException, 'Branch "%s" does not exist' % from_name
+ if branch_exists(to_name):
+ raise GitException, 'Branch "%s" already exists' % to_name
+
+ if get_head_file() == from_name:
+ 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
def rm(files, force = False):
"""Remove a file from the repository
"""
- if force:
- git_opt = '--force-remove'
- else:
- git_opt = '--remove'
-
if not force:
for f in files:
if os.path.exists(f):
if files:
__run('git-update-index --force-remove --', files)
-def update_cache(files = [], force = False):
+# 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')
+ if name and email:
+ __user = Person(name, email)
+ else:
+ raise GitException, 'unknown user details'
+ 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
"""
- cache_files = __tree_status(files)
+ if not files:
+ files = []
+
+ cache_files = __tree_status(files, verbose = False)
# everything is up-to-date
if len(cache_files) == 0:
return True
-def commit(message, files = [], parents = [], allowempty = False,
+def commit(message, files = None, parents = None, allowempty = False,
cache_update = True, tree_id = None,
author_name = None, author_email = None, author_date = None,
committer_name = None, committer_email = None):
"""Commit the current tree to repository
"""
+ if not files:
+ files = []
+ if not parents:
+ parents = []
+
# Get the tree status
if cache_update and parents != []:
changes = update_cache(files)
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 merge(base, head1, head2):
- """Perform a 3-way merge between base, head1 and head2 into the
- local tree
+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,
+ the pushing would fall back to the three-way merge.
"""
- if __run('git-read-tree -u -m', [base, head1, head2]) != 0:
- raise GitException, 'git-read-tree failed (local changes maybe?)'
+ if check_index:
+ index_opt = '--index'
+ else:
+ index_opt = ''
- # this can fail if there are conflicts
- if os.system('git-merge-index -o -q gitmergeonefile.py -a') != 0:
- raise GitException, 'git-merge-cache failed (possible conflicts)'
+ if not files:
+ files = []
-def status(files = [], modified = False, new = False, deleted = False,
+ diff_str = diff(files, rev1, rev2)
+ if diff_str:
+ try:
+ _input_str('git-apply %s' % index_opt, diff_str)
+ except GitException:
+ return False
+
+ 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 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:
+ 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 = {}
+ stages_re = re.compile('^([0-7]+) ([0-9a-f]{40}) ([1-3])\t(.*)$', re.S)
+
+ for line in _output('git-ls-files --unmerged --stage -z').split('\0'):
+ if not line:
+ continue
+
+ mode, hash, stage, path = stages_re.findall(line)[0]
+
+ if not path in files:
+ files[path] = {}
+ files[path]['1'] = ('', '')
+ files[path]['2'] = ('', '')
+ files[path]['3'] = ('', '')
+
+ files[path][stage] = (mode, hash)
+
+ # 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],
+ stages['2'][0], stages['3'][0]) != 0:
+ errors = True
+
+ if errors:
+ raise GitException, 'GIT index merging failed (possible conflicts)'
+
+def status(files = None, modified = False, new = False, deleted = False,
conflict = False, unknown = False, noexclude = False):
"""Show the tree status
"""
+ if not files:
+ files = []
+
cache_files = __tree_status(files, unknown = True, noexclude = noexclude)
all = not (modified or new or deleted or conflict or unknown)
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 = [], rev1 = 'HEAD', rev2 = None, out_fd = None):
+def diff(files = None, rev1 = 'HEAD', rev2 = None, out_fd = None):
"""Show the diff between rev1 and rev2
"""
-
- if rev2:
- diff_str = _output(['git-diff-tree', '-p', rev1, rev2] + files)
+ if not files:
+ files = []
+
+ if rev1 and rev2:
+ diff_str = _output(['git-diff-tree', '-p', rev1, rev2, '--'] + files)
+ elif rev1 or rev2:
+ refresh_index()
+ if rev2:
+ diff_str = _output(['git-diff-index', '-p', '-R', rev2, '--'] + files)
+ else:
+ diff_str = _output(['git-diff-index', '-p', rev1, '--'] + files)
else:
- os.system('git-update-index --refresh > /dev/null')
- diff_str = _output(['git-diff-index', '-p', rev1] + files)
+ diff_str = ''
if out_fd:
out_fd.write(diff_str)
else:
return diff_str
-def diffstat(files = [], rev1 = 'HEAD', rev2 = None):
+def diffstat(files = None, rev1 = 'HEAD', rev2 = None):
"""Return the diffstat between rev1 and rev2
"""
+ if not files:
+ files = []
p=popen2.Popen3('git-apply --stat')
diff(files, rev1, rev2, p.tochild)
p.tochild.close()
- str = p.fromchild.read().rstrip()
+ diff_str = p.fromchild.read().rstrip()
if p.wait():
raise GitException, 'git.diffstat failed'
- return str
+ return diff_str
def files(rev1, rev2):
"""Return the files modified between rev1 and rev2
"""
- str = ''
+ result = ''
for line in _output_lines('git-diff-tree -r %s %s' % (rev1, rev2)):
- str += '%s %s\n' % tuple(line.rstrip().split(' ',4)[-1].split('\t',1))
+ result += '%s %s\n' % tuple(line.rstrip().split(' ',4)[-1].split('\t',1))
- return str.rstrip()
+ return result.rstrip()
def barefiles(rev1, rev2):
"""Return the files modified between rev1 and rev2, without status info
"""
- str = ''
+ result = ''
for line in _output_lines('git-diff-tree -r %s %s' % (rev1, rev2)):
- str += '%s\n' % line.rstrip().split(' ',4)[-1].split('\t',1)[-1]
+ result += '%s\n' % line.rstrip().split(' ',4)[-1].split('\t',1)[-1]
+
+ return result.rstrip()
- return str.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 = [], tree_id = None, force = False):
+def checkout(files = None, tree_id = None, force = False):
"""Check out the given or all files
"""
- if tree_id and __run('git-read-tree -m', [tree_id]) != 0:
- raise GitException, 'Failed git-read-tree -m %s' % tree_id
+ if not files:
+ files = []
+
+ 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
"""
- 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(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()
- cache_files = __tree_status(tree_id = tree_id)
- rm_files = [x[1] for x in cache_files if x[0] in ['D']]
+ 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(tree_id = tree_id, force = True)
- __set_head(tree_id)
+ checkout(files, tree_id, True)
+ # checkout doesn't remove files
+ map(os.remove, rm_files)
- # 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 pull(repository = 'origin', refspec = None):
"""Pull changes from the remote repository. At the moment, just
- use the 'git pull' command
+ use the 'git-pull' command
"""
+ # 'git-pull' updates 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
+ if __run(config.get('stgit.pullcmd'), args) != 0:
+ raise GitException, 'Failed "git-pull %s"' % repository
-def apply_patch(filename = None):
- """Apply a patch onto the current index. There must not be any
- local changes in the tree, otherwise the command fails
+def repack():
+ """Repack all objects into a single pack
"""
- os.system('git-update-index --refresh > /dev/null')
+ __run('git-repack -a -d -f')
- if filename:
- if __run('git-apply --index', [filename]) != 0:
- raise GitException, 'Patch does not apply cleanly'
+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
+ """
+ if diff is None:
+ if filename:
+ f = file(filename)
+ else:
+ f = sys.stdin
+ diff = f.read()
+ if filename:
+ f.close()
+
+ if base:
+ orig_head = get_head()
+ switch(base)
else:
- _input('git-apply --index', sys.stdin)
+ refresh_index()
+
+ try:
+ _input_str('git-apply --index', diff)
+ except GitException:
+ if base:
+ switch(orig_head)
+ 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)
+ merge(base, orig_head, top)
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):
+ """Return the revisions from the list modifying the given files
+ """
+ cmd = ['git-rev-list', '%s..' % base_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):
+ return os.listdir(os.path.join(basedir.get(), dir))
+
+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)
+ 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
+
+ # FIXME: in the case of local branch we should maybe set remote to
+ # "." but are we even sure it is the only case left ?
+
+ # if we get here we've found nothing
+ return None
~mdw / stgit / blobdiff