def snapshot(self, message='', user=''):
"""Takes a snapshot of the the current status of the directory"""
# Recursively build tree structure
with utils.temp_wd(self.root_dir):
top_hash = self._create_tree_node('.')
# Get hash of the current snapshot and if it is detached
old_hash, detached = self._current_snapshot_hash()
# Check if any changes were made and if the snapshot should be saved
if old_hash == top_hash:
raise CleanDirectoryException('No changes to repository')
if detached:
raise DetachedHeadException(
'Detached HEAD. Snapshot was not saved. '
'Save as branch to make changes.'
)
# Save updated hashcache
self._save_objhashcache()
# Update current branch head with new snapshot hash
self._update_branch_head(top_hash)
# Insert snapshot data into the snapshot database
self._insert_snapshot(top_hash, message, user)
return top_hash
def _check_dirty(self):
"""Raises exception if the directory has changes since last save
Raises:
DirtyDirectoryException: If changes made since last save
"""
# Get hash of directory in it's current form
with utils.temp_wd(self.root_dir):
dir_hash = self._get_tree_hash('.')
# Check if any outstanding changes are in the directory
cur_hash, _ = self._current_snapshot_hash()
if cur_hash != dir_hash:
# Changes have been made and we want to warn the user
raise DirtyDirectoryException(
'Changes have been made to the directory. '
'Use force option to overwrite.'
)
