| """Python GIT interface |
| """ |
| |
| __copyright__ = """ |
| Copyright (C) 2005, Catalin Marinas <catalin.marinas@gmail.com> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License version 2 as |
| published by the Free Software Foundation. |
| |
| 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| """ |
| |
| import sys, os, re |
| from shutil import copyfile |
| |
| from stgit.exception import * |
| from stgit import basedir |
| from stgit.utils import * |
| from stgit.out import * |
| from stgit.run import * |
| from stgit.config import config |
| |
| # git exception class |
| class GitException(StgException): |
| pass |
| |
| # When a subprocess has a problem, we want the exception to be a |
| # subclass of GitException. |
| class GitRunException(GitException): |
| pass |
| class GRun(Run): |
| exc = GitRunException |
| def __init__(self, *cmd): |
| """Initialise the Run object and insert the 'git' command name. |
| """ |
| Run.__init__(self, 'git', *cmd) |
| |
| # |
| # 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 |
| """ |
| def __init__(self, id_hash): |
| self.__id_hash = id_hash |
| |
| lines = GRun('cat-file', 'commit', id_hash).output_lines() |
| for i in range(len(lines)): |
| line = lines[i] |
| if not line: |
| break # we've seen all the header fields |
| key, val = line.split(' ', 1) |
| if key == 'tree': |
| self.__tree = val |
| elif key == 'author': |
| self.__author = val |
| elif key == 'committer': |
| self.__committer = val |
| else: |
| pass # ignore other headers |
| self.__log = '\n'.join(lines[i+1:]) |
| |
| def get_id_hash(self): |
| return self.__id_hash |
| |
| def get_tree(self): |
| return self.__tree |
| |
| def get_parent(self): |
| parents = self.get_parents() |
| if parents: |
| return parents[0] |
| else: |
| return None |
| |
| def get_parents(self): |
| return GRun('rev-list', '--parents', '--max-count=1', self.__id_hash |
| ).output_one_line().split()[1:] |
| |
| def get_author(self): |
| return self.__author |
| |
| def get_committer(self): |
| return self.__committer |
| |
| 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: |
| commit = Commit(id_hash) |
| __commits[id_hash] = commit |
| return commit |
| |
| def get_conflicts(): |
| """Return the list of file conflicts |
| """ |
| names = set() |
| for line in GRun('ls-files', '-z', '--unmerged' |
| ).raw_output().split('\0')[:-1]: |
| stat, path = line.split('\t', 1) |
| names.add(path) |
| return list(names) |
| |
| def exclude_files(): |
| files = [os.path.join(basedir.get(), 'info', 'exclude')] |
| user_exclude = config.get('core.excludesfile') |
| if user_exclude: |
| files.append(user_exclude) |
| return files |
| |
| def ls_files(files, tree = 'HEAD', full_name = True): |
| """Return the files known to GIT or raise an error otherwise. It also |
| converts the file to the full path relative the the .git directory. |
| """ |
| if not files: |
| return [] |
| |
| args = [] |
| if tree: |
| args.append('--with-tree=%s' % tree) |
| if full_name: |
| args.append('--full-name') |
| args.append('--') |
| args.extend(files) |
| try: |
| # use a set to avoid file names duplication due to different stages |
| fileset = set(GRun('ls-files', '--error-unmatch', *args).output_lines()) |
| except GitRunException: |
| # just hide the details of the 'git ls-files' command we use |
| raise GitException, \ |
| 'Some of the given paths are either missing or not known to GIT' |
| return list(fileset) |
| |
| def parse_git_ls(output): |
| """Parse the output of git diff-index, diff-files, etc. Doesn't handle |
| rename/copy output, so don't feed it output generated with the -M |
| or -C flags.""" |
| t = None |
| for line in output.split('\0'): |
| if not line: |
| # There's a zero byte at the end of the output, which |
| # gives us an empty string as the last "line". |
| continue |
| if t == None: |
| mode_a, mode_b, sha1_a, sha1_b, t = line.split(' ') |
| else: |
| yield (t, line) |
| t = None |
| |
| def tree_status(files = None, tree_id = 'HEAD', unknown = False, |
| noexclude = True, verbose = False): |
| """Get the status of all changed files, or of a selected set of |
| files. Returns a list of pairs - (status, filename). |
| |
| If 'not files', it will check all files, and optionally all |
| unknown files. If 'files' is a list, it will only check the files |
| in the list. |
| """ |
| assert not files or not unknown |
| |
| if verbose: |
| out.start('Checking for changes in the working directory') |
| |
| refresh_index() |
| |
| if files is None: |
| files = [] |
| cache_files = [] |
| |
| # unknown files |
| if unknown: |
| cmd = ['ls-files', '-z', '--others', '--directory', |
| '--no-empty-directory'] |
| if not noexclude: |
| cmd += ['--exclude=%s' % s for s in |
| ['*.[ao]', '*.pyc', '.*', '*~', '#*', 'TAGS', 'tags']] |
| cmd += ['--exclude-per-directory=.gitignore'] |
| cmd += ['--exclude-from=%s' % fn |
| for fn in exclude_files() |
| if os.path.exists(fn)] |
| |
| lines = GRun(*cmd).raw_output().split('\0') |
| cache_files += [('?', line) for line in lines if line] |
| |
| # conflicted files |
| conflicts = get_conflicts() |
| cache_files += [('C', filename) for filename in conflicts |
| if not files or filename in files] |
| reported_files = set(conflicts) |
| files_left = [f for f in files if f not in reported_files] |
| |
| # files in the index. Only execute this code if no files were |
| # specified when calling the function (i.e. report all files) or |
| # files were specified but already found in the previous step |
| if not files or files_left: |
| args = [tree_id] |
| if files_left: |
| args += ['--'] + files_left |
| for t, fn in parse_git_ls(GRun('diff-index', '-z', *args).raw_output()): |
| # the condition is needed in case files is emtpy and |
| # diff-index lists those already reported |
| if not fn in reported_files: |
| cache_files.append((t, fn)) |
| reported_files.add(fn) |
| files_left = [f for f in files if f not in reported_files] |
| |
| # files in the index but changed on (or removed from) disk. Only |
| # execute this code if no files were specified when calling the |
| # function (i.e. report all files) or files were specified but |
| # already found in the previous step |
| if not files or files_left: |
| args = [] |
| if files_left: |
| args += ['--'] + files_left |
| for t, fn in parse_git_ls(GRun('diff-files', '-z', *args).raw_output()): |
| # the condition is needed in case files is empty and |
| # diff-files lists those already reported |
| if not fn in reported_files: |
| cache_files.append((t, fn)) |
| reported_files.add(fn) |
| |
| if verbose: |
| out.done() |
| |
| return cache_files |
| |
| def local_changes(verbose = True): |
| """Return true if there are local changes in the tree |
| """ |
| return len(tree_status(verbose = verbose)) != 0 |
| |
| def get_heads(): |
| heads = [] |
| hr = re.compile(r'^[0-9a-f]{40} refs/heads/(.+)$') |
| for line in GRun('show-ref', '--heads').output_lines(): |
| m = hr.match(line) |
| heads.append(m.group(1)) |
| return heads |
| |
| # HEAD value cached |
| __head = None |
| |
| def get_head(): |
| """Verifies the HEAD and returns the SHA1 id that represents it |
| """ |
| global __head |
| |
| if not __head: |
| __head = rev_parse('HEAD') |
| return __head |
| |
| class DetachedHeadException(GitException): |
| def __init__(self): |
| GitException.__init__(self, 'Not on any branch') |
| |
| def get_head_file(): |
| """Return the name of the file pointed to by the HEAD symref. |
| Throw an exception if HEAD is detached.""" |
| try: |
| return strip_prefix( |
| 'refs/heads/', GRun('symbolic-ref', '-q', 'HEAD' |
| ).output_one_line()) |
| except GitRunException: |
| raise DetachedHeadException() |
| |
| 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() |
| try: |
| GRun('symbolic-ref', 'HEAD', 'refs/heads/%s' % ref).run() |
| except GitRunException: |
| raise GitException, 'Could not set head to "%s"' % ref |
| |
| def set_ref(ref, val): |
| """Point ref at a new commit object.""" |
| try: |
| GRun('update-ref', ref, val).run() |
| except GitRunException: |
| raise GitException, 'Could not update %s to "%s".' % (ref, val) |
| |
| def set_branch(branch, val): |
| set_ref('refs/heads/%s' % branch, val) |
| |
| def __set_head(val): |
| """Sets the HEAD value |
| """ |
| global __head |
| |
| if not __head or __head != val: |
| set_ref('HEAD', 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. |
| """ |
| GRun('update-index', '-q', '--unmerged', '--refresh').run() |
| |
| def rev_parse(git_id): |
| """Parse the string and return a verified SHA1 id |
| """ |
| try: |
| return GRun('rev-parse', '--verify', git_id |
| ).discard_stderr().output_one_line() |
| except GitRunException: |
| raise GitException, 'Unknown revision: %s' % git_id |
| |
| def ref_exists(ref): |
| try: |
| rev_parse(ref) |
| return True |
| except GitException: |
| return False |
| |
| def branch_exists(branch): |
| return ref_exists('refs/heads/%s' % branch) |
| |
| def create_branch(new_branch, tree_id = None): |
| """Create a new branch in the git repository |
| """ |
| if branch_exists(new_branch): |
| raise GitException, 'Branch "%s" already exists' % new_branch |
| |
| current_head_file = get_head_file() |
| 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: |
| try: |
| switch(tree_id) |
| except GitException: |
| # Tree switching failed. Revert the head file |
| set_head_file(current_head_file) |
| delete_branch(new_branch) |
| raise |
| |
| 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('refs/heads/%s^{commit}' % new_branch) |
| if tree_id != get_head(): |
| refresh_index() |
| try: |
| GRun('read-tree', '-u', '-m', get_head(), tree_id).run() |
| except GitRunException: |
| raise GitException, '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_ref(ref): |
| if not ref_exists(ref): |
| raise GitException, '%s does not exist' % ref |
| sha1 = GRun('show-ref', '-s', ref).output_one_line() |
| try: |
| GRun('update-ref', '-d', ref, sha1).run() |
| except GitRunException: |
| raise GitException, 'Failed to delete ref %s' % ref |
| |
| def delete_branch(name): |
| delete_ref('refs/heads/%s' % name) |
| |
| def rename_ref(from_ref, to_ref): |
| if not ref_exists(from_ref): |
| raise GitException, '"%s" does not exist' % from_ref |
| if ref_exists(to_ref): |
| raise GitException, '"%s" already exists' % to_ref |
| |
| sha1 = GRun('show-ref', '-s', from_ref).output_one_line() |
| try: |
| GRun('update-ref', to_ref, sha1, '0'*40).run() |
| except GitRunException: |
| raise GitException, 'Failed to create new ref %s' % to_ref |
| try: |
| GRun('update-ref', '-d', from_ref, sha1).run() |
| except GitRunException: |
| raise GitException, 'Failed to delete ref %s' % from_ref |
| |
| def rename_branch(from_name, to_name): |
| """Rename a git branch.""" |
| rename_ref('refs/heads/%s' % from_name, 'refs/heads/%s' % to_name) |
| try: |
| if get_head_file() == from_name: |
| set_head_file(to_name) |
| except DetachedHeadException: |
| pass # detached HEAD, so the renamee can't be the current branch |
| 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) |
| |
| # 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 |
| """ |
| cache_files = tree_status(files, verbose = False) |
| |
| # everything is up-to-date |
| if len(cache_files) == 0: |
| return False |
| |
| # check for unresolved conflicts |
| if not force and [x for x in cache_files |
| if x[0] not in ['M', 'N', 'A', 'D']]: |
| raise GitException, 'Updating cache failed: unresolved conflicts' |
| |
| # update the cache |
| add_files = [x[1] for x in cache_files if x[0] in ['N', 'A']] |
| rm_files = [x[1] for x in cache_files if x[0] in ['D']] |
| m_files = [x[1] for x in cache_files if x[0] in ['M']] |
| |
| GRun('update-index', '--add', '--').xargs(add_files) |
| GRun('update-index', '--force-remove', '--').xargs(rm_files) |
| GRun('update-index', '--').xargs(m_files) |
| |
| return True |
| |
| def commit(message, files = None, parents = None, allowempty = False, |
| cache_update = True, tree_id = None, set_head = False, |
| author_name = None, author_email = None, author_date = None, |
| committer_name = None, committer_email = None): |
| """Commit the current tree to repository |
| """ |
| if not parents: |
| parents = [] |
| |
| # Get the tree status |
| if cache_update and parents != []: |
| changes = update_cache(files) |
| if not changes and not allowempty: |
| raise GitException, 'No changes to commit' |
| |
| # get the commit message |
| if not message: |
| message = '\n' |
| elif message[-1:] != '\n': |
| message += '\n' |
| |
| # write the index to repository |
| if tree_id == None: |
| tree_id = GRun('write-tree').output_one_line() |
| set_head = True |
| |
| # the commit |
| env = {} |
| if author_name: |
| env['GIT_AUTHOR_NAME'] = author_name |
| if author_email: |
| env['GIT_AUTHOR_EMAIL'] = author_email |
| if author_date: |
| env['GIT_AUTHOR_DATE'] = author_date |
| if committer_name: |
| env['GIT_COMMITTER_NAME'] = committer_name |
| if committer_email: |
| env['GIT_COMMITTER_EMAIL'] = committer_email |
| commit_id = GRun('commit-tree', tree_id, |
| *sum([['-p', p] for p in parents], []) |
| ).env(env).raw_input(message).output_one_line() |
| if set_head: |
| __set_head(commit_id) |
| |
| return commit_id |
| |
| 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 check_index: |
| index_opt = ['--index'] |
| else: |
| index_opt = [] |
| |
| if not files: |
| files = [] |
| |
| diff_str = diff(files, rev1, rev2) |
| if diff_str: |
| try: |
| GRun('apply', *index_opt).raw_input( |
| diff_str).discard_stderr().no_output() |
| except GitRunException: |
| return False |
| |
| return True |
| |
| stages_re = re.compile('^([0-7]+) ([0-9a-f]{40}) ([1-3])\t(.*)$', re.S) |
| |
| def merge_recursive(base, head1, head2): |
| """Perform a 3-way merge between base, head1 and head2 into the |
| local tree |
| """ |
| refresh_index() |
| p = GRun('merge-recursive', base, '--', head1, head2).env( |
| { 'GITHEAD_%s' % base: 'ancestor', |
| 'GITHEAD_%s' % head1: 'current', |
| 'GITHEAD_%s' % head2: 'patched'}).returns([0, 1]) |
| output = p.output_lines() |
| if p.exitcode: |
| # There were conflicts |
| if config.get('stgit.autoimerge') == 'yes': |
| mergetool() |
| else: |
| conflicts = [l for l in output if l.startswith('CONFLICT')] |
| out.info(*conflicts) |
| raise GitException, "%d conflict(s)" % len(conflicts) |
| |
| def mergetool(files = ()): |
| """Invoke 'git mergetool' to resolve any outstanding conflicts. If 'not |
| files', all the files in an unmerged state will be processed.""" |
| GRun('mergetool', *list(files)).returns([0, 1]).run() |
| # check for unmerged entries (prepend 'CONFLICT ' for consistency with |
| # merge_recursive()) |
| conflicts = ['CONFLICT ' + f for f in get_conflicts()] |
| if conflicts: |
| out.info(*conflicts) |
| raise GitException, "%d conflict(s)" % len(conflicts) |
| |
| def diff(files = None, rev1 = 'HEAD', rev2 = None, diff_flags = [], |
| binary = True): |
| """Show the diff between rev1 and rev2 |
| """ |
| if not files: |
| files = [] |
| if binary and '--binary' not in diff_flags: |
| diff_flags = diff_flags + ['--binary'] |
| |
| if rev1 and rev2: |
| return GRun('diff-tree', '-p', |
| *(diff_flags + [rev1, rev2, '--'] + files)).raw_output() |
| elif rev1 or rev2: |
| refresh_index() |
| if rev2: |
| return GRun('diff-index', '-p', '-R', |
| *(diff_flags + [rev2, '--'] + files)).raw_output() |
| else: |
| return GRun('diff-index', '-p', |
| *(diff_flags + [rev1, '--'] + files)).raw_output() |
| else: |
| return '' |
| |
| def files(rev1, rev2, diff_flags = []): |
| """Return the files modified between rev1 and rev2 |
| """ |
| |
| result = [] |
| for line in GRun('diff-tree', *(diff_flags + ['-r', rev1, rev2]) |
| ).output_lines(): |
| result.append('%s %s' % tuple(line.split(' ', 4)[-1].split('\t', 1))) |
| |
| return '\n'.join(result) |
| |
| def barefiles(rev1, rev2): |
| """Return the files modified between rev1 and rev2, without status info |
| """ |
| |
| result = [] |
| for line in GRun('diff-tree', '-r', rev1, rev2).output_lines(): |
| result.append(line.split(' ', 4)[-1].split('\t', 1)[-1]) |
| |
| return '\n'.join(result) |
| |
| def pretty_commit(commit_id = 'HEAD', flags = []): |
| """Return a given commit (log + diff) |
| """ |
| return GRun('show', *(flags + [commit_id])).raw_output() |
| |
| def checkout(files = None, tree_id = None, force = False): |
| """Check out the given or all files |
| """ |
| if tree_id: |
| try: |
| GRun('read-tree', '--reset', tree_id).run() |
| except GitRunException: |
| raise GitException, 'Failed "git read-tree" --reset %s' % tree_id |
| |
| cmd = ['checkout-index', '-q', '-u'] |
| if force: |
| cmd.append('-f') |
| if files: |
| GRun(*(cmd + ['--'])).xargs(files) |
| else: |
| GRun(*(cmd + ['-a'])).run() |
| |
| def switch(tree_id, keep = False): |
| """Switch the tree to the given id |
| """ |
| if keep: |
| # only update the index while keeping the local changes |
| GRun('read-tree', tree_id).run() |
| else: |
| refresh_index() |
| try: |
| GRun('read-tree', '-u', '-m', get_head(), tree_id).run() |
| except GitRunException: |
| raise GitException, 'read-tree failed (local changes maybe?)' |
| |
| __set_head(tree_id) |
| |
| 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() |
| |
| 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, [f for f in rm_files if not os.path.isdir(f)]) |
| |
| # if the reset refers to the whole tree, switch the HEAD as well |
| if not files: |
| __set_head(tree_id) |
| |
| def resolved(filenames, reset = None): |
| if reset: |
| stage = {'ancestor': 1, 'current': 2, 'patched': 3}[reset] |
| GRun('checkout-index', '--no-create', '--stage=%d' % stage, |
| '--stdin', '-z').input_nulterm(filenames).no_output() |
| GRun('update-index', '--add', '--').xargs(filenames) |
| for filename in filenames: |
| # update the access and modificatied times |
| os.utime(filename, None) |
| |
| 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') |
| Run(*(command.split() + args)).run() |
| |
| def pull(repository = 'origin', refspec = None): |
| """Fetches changes from the remote repository, using 'git pull' |
| by default. |
| """ |
| # we update the HEAD |
| __clear_head_cache() |
| |
| args = [repository] |
| if refspec: |
| args.append(refspec) |
| |
| command = config.get('branch.%s.stgit.pullcmd' % get_head_file()) or \ |
| config.get('stgit.pullcmd') |
| Run(*(command.split() + args)).run() |
| |
| def rebase(tree_id = None): |
| """Rebase the current tree to the give tree_id. The tree_id |
| argument may be something other than a GIT id if an external |
| command is invoked. |
| """ |
| command = config.get('branch.%s.stgit.rebasecmd' % get_head_file()) \ |
| or config.get('stgit.rebasecmd') |
| if tree_id: |
| args = [tree_id] |
| elif command: |
| args = [] |
| else: |
| raise GitException, 'Default rebasing requires a commit id' |
| if command: |
| # clear the HEAD cache as the custom rebase command will update it |
| __clear_head_cache() |
| Run(*(command.split() + args)).run() |
| else: |
| # default rebasing |
| reset(tree_id = tree_id) |
| |
| def repack(): |
| """Repack all objects into a single pack |
| """ |
| GRun('repack', '-a', '-d', '-f').run() |
| |
| def apply_patch(filename = None, diff = None, base = None, |
| reject = False, strip = None): |
| """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: |
| refresh_index() |
| |
| cmd = ['apply', '--index'] |
| if reject: |
| cmd += ['--reject'] |
| if strip != None: |
| cmd += ['-p%s' % (strip,)] |
| try: |
| GRun(*cmd).raw_input(diff).no_output() |
| except GitRunException: |
| if base: |
| switch(orig_head) |
| raise GitException('Diff does not apply cleanly') |
| |
| if base: |
| top = commit(message = 'temporary commit used for applying a patch', |
| parents = [base]) |
| switch(orig_head) |
| merge_recursive(base, orig_head, top) |
| |
| def clone(repository, local_dir): |
| """Clone a remote repository. At the moment, just use the |
| 'git clone' script |
| """ |
| GRun('clone', repository, local_dir).run() |
| |
| def modifying_revs(files, base_rev, head_rev): |
| """Return the revisions from the list modifying the given files.""" |
| return GRun('rev-list', '%s..%s' % (base_rev, head_rev), '--', *files |
| ).output_lines() |
| |
| 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('^([^:]*):[^:]*$', refspec) |
| if m: |
| return m.group(1) |
| else: |
| raise GitException, 'Cannot parse refspec "%s"' % line |
| |
| def __remotes_from_config(): |
| return config.sections_matching(r'remote\.(.*)\.url') |
| |
| def __remotes_from_dir(dir): |
| d = os.path.join(basedir.get(), dir) |
| if os.path.exists(d): |
| return os.listdir(d) |
| else: |
| return [] |
| |
| def remotes_list(): |
| """Return the list of remotes in the repository |
| """ |
| return (set(__remotes_from_config()) |
| | set(__remotes_from_dir('remotes')) |
| | set(__remotes_from_dir('branches'))) |
| |
| def remotes_local_branches(remote): |
| """Returns the list of local branches fetched from given remote |
| """ |
| |
| branches = [] |
| if remote in __remotes_from_config(): |
| for line in config.getall('remote.%s.fetch' % remote): |
| branches.append(refspec_localpart(line)) |
| elif remote in __remotes_from_dir('remotes'): |
| stream = open(os.path.join(basedir.get(), 'remotes', remote), 'r') |
| for line in stream: |
| # Only consider Pull lines |
| m = re.match('^Pull: (.*)\n$', 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() |
| |
| if not fetch_head: |
| out.warn('No for-merge remote head found in FETCH_HEAD') |
| |
| # here we are sure to have a single fetch_head |
| return fetch_head |
| |
| def all_refs(): |
| """Return a list of all refs in the current repository. |
| """ |
| |
| return [line.split()[1] for line in GRun('show-ref').output_lines()] |
