def changed_files(cls, scm, changes_since=None, diffspec=None):
"""Determines the files changed according to SCM/workspace and options."""
workspace = ScmWorkspace(scm)
if diffspec:
return workspace.changes_in(diffspec)
changes_since = changes_since or scm.current_rev_identifier()
return workspace.touched_files(changes_since)
def __init__(self, scm, workspace=None, changes_since=None, diffspec=None):
self._scm = scm
self._workspace = workspace or ScmWorkspace(scm)
self._changes_since = changes_since
self._diffspec = diffspec