diff options
Diffstat (limited to 'genbackupdatalib/names.py')
| -rw-r--r-- | genbackupdatalib/names.py | 28 |
1 files changed, 14 insertions, 14 deletions
diff --git a/genbackupdatalib/names.py b/genbackupdatalib/names.py index 287112d..1517400 100644 --- a/genbackupdatalib/names.py +++ b/genbackupdatalib/names.py @@ -1,15 +1,15 @@ # Copyright 2011 Lars Wirzenius -# +# # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. -# +# # 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, see <http://www.gnu.org/licenses/>. @@ -20,38 +20,38 @@ import os class NameGenerator(object): '''Generate names for new output files. - + If the target directory is empty, the sequence of output files is always the same for the same parameters. - + A directory structure is also generated. The shape of the tree is defined by two parameters: 'max' and 'depth'. 'depth' is the number of levels of subdirectories to create, and 'max' is the maximum number of files/dirs to allow per output directory. Thus, if max is 3 and depth is 2, the output files are: 0/0/0, 0/0/1, 0/0/2, 0/1/0, 0/1/1, etc. - + If depth is zero, all output files go directly to the target directory, and max is ignored. - + ''' - + def __init__(self, dirname, depth, max): self.dirname = dirname self.depth = depth self.max = max self.counter = 0 - + def _path_tuple(self, n): '''Return tuple for dir/file numbers for nth output file. - + The last item in the tuple gives the file number, the precding items the directory numbers. Thus, a tuple (1, 2, 3) would mean path '1/2/3', but it is given as a tuple for easier manipulation. - + ''' - + if self.depth == 0: return (n,) else: @@ -62,12 +62,12 @@ class NameGenerator(object): items.append(n) items.reverse() return tuple(items) - + def _next_candidate_name(self): items = self._path_tuple(self.counter) self.counter += 1 return os.path.join(self.dirname, *[str(i) for i in items]) - + def new(self): while True: name = self._next_candidate_name() |