+
+def readonly_constant_property(f):
+ """Decorator that converts a function that computes a value to an
+ attribute that returns the value. The value is computed only once,
+ the first time it is accessed."""
+ def new_f(self):
+ n = '__' + f.__name__
+ if not hasattr(self, n):
+ setattr(self, n, f(self))
+ return getattr(self, n)
+ return property(new_f)
+
+class DirectoryException(StgException):
+ pass
+
+class _Directory(object):
+ def __init__(self, needs_current_series = True, log = True):
+ self.needs_current_series = needs_current_series
+ self.log = log
+ @readonly_constant_property
+ def git_dir(self):
+ try:
+ return Run('git', 'rev-parse', '--git-dir'
+ ).discard_stderr().output_one_line()
+ except RunException:
+ raise DirectoryException('No git repository found')
+ @readonly_constant_property
+ def __topdir_path(self):
+ try:
+ lines = Run('git', 'rev-parse', '--show-cdup'
+ ).discard_stderr().output_lines()
+ if len(lines) == 0:
+ return '.'
+ elif len(lines) == 1:
+ return lines[0]
+ else:
+ raise RunException('Too much output')
+ except RunException:
+ raise DirectoryException('No git repository found')
+ @readonly_constant_property
+ def is_inside_git_dir(self):
+ return { 'true': True, 'false': False
+ }[Run('git', 'rev-parse', '--is-inside-git-dir'
+ ).output_one_line()]
+ @readonly_constant_property
+ def is_inside_worktree(self):
+ return { 'true': True, 'false': False
+ }[Run('git', 'rev-parse', '--is-inside-work-tree'
+ ).output_one_line()]
+ def cd_to_topdir(self):
+ os.chdir(self.__topdir_path)
+ def write_log(self, msg):
+ if self.log:
+ log.compat_log_entry(msg)
+
+class DirectoryAnywhere(_Directory):
+ def setup(self):
+ pass
+
+class DirectoryHasRepository(_Directory):
+ def setup(self):
+ self.git_dir # might throw an exception
+ log.compat_log_external_mods()
+
+class DirectoryInWorktree(DirectoryHasRepository):
+ def setup(self):
+ DirectoryHasRepository.setup(self)
+ if not self.is_inside_worktree:
+ raise DirectoryException('Not inside a git worktree')
+
+class DirectoryGotoToplevel(DirectoryInWorktree):
+ def setup(self):
+ DirectoryInWorktree.setup(self)
+ self.cd_to_topdir()
+
+class DirectoryHasRepositoryLib(_Directory):
+ """For commands that use the new infrastructure in stgit.lib.*."""
+ def __init__(self):
+ self.needs_current_series = False
+ self.log = False # stgit.lib.transaction handles logging
+ def setup(self):
+ # This will throw an exception if we don't have a repository.
+ self.repository = libstack.Repository.default()
~mdw / stgit / blobdiff