Difference Archiver
A tool that creates media archives that saves on compression time by only updating altered files. It hashes filenames by renaming them to their equivalent hash sum to remove duplicates, and loads/stores the result in a compressed archive.
This program is written for Python 3.4 or later.
Requires:
Optional requirements:
- send2trash: for trashing files instead of deleting them (see config)
To create, extract or update an archive, use:
python -m darch [flags] archive-name...
There are a number of options available. Here are a couple that may be of interest:
-u: Update the archive only, leaving files on disk.-m: Perform media hash only, no archive manipulation.-n: Dry run. No changes are made on the filesystem.-F: Full run. Recreate the archive from scratch.
Each archive can have its own configuration file by placing an appropriately-formatted darch.yaml in the root directory.
There is also a per-user configuration that contains information beyond what the local config file provides. It is located in $XDG_CONFIG_HOME/darch.yaml, or ~/.config/darch.yaml if there is no $XDG_CONFIG_HOME environmental variable.
Since files are renamed, the original filename is destroyed. Sometimes this is not desirable behavior. For instance, a comic strip folder would have images inside in a specific order based on the filename.
By creating a file called .ignore in a directory, you can specify which files and directories to pass over and not change.
If you accidentally run the media hasher on the wrong directory, the filename information of many files can be lost, which may be a big headache to reverse. So by default, all changed files are logged in .darch/hashed.log so you could renamed them back if necessary.
Duplicates across multiple directories are listed in .darch/duplicates.log after a succesful run.
This program is licensed under the GPL version 2 or later. See LICENSE for more details.