Filename/absolute path length workarounds

[kieranjol]

The total path of a file including all tiles and folders should be less than 259 characters. Python and Windows tends to not be able to read files where the paths are longer than this.

So there's a lot to think about here.

• A pre-ingest validator that could form part of this: https://github.com/kieranjol/IFIscripts/issues/296
• A policy is needed
• The actual filename needs to be relatively short as it can get extended when a logfile is generated using the filename as a base, eg reallylongFilename.txt might have a log called reallylongFilename.txt_log_2018_12_27Y14_01_24.log, and it should also be factored in that a UUID is present, as well as the logs/metadata/objects folders and so on and so forth.
• The guts of a file renaming procedure already exists as part of the loopline and special collections workflows, but it is purely manual. An automated procedure is needed in order to increase the speed and accuracy of logging of the file rename event and the documentation of what the previous name was.

More discussion needed via Digital Collections Meetings.

[kieranjol]

Btw 159 characters for a filename might be a good starting point,as this is the max length of a filename that doesn't become problematic in windows when a manifest with the file's basename is placed in the desktop old manifests dir. But seeing as this is dependent on the length of a username, something around 140 might be a safer bet.

[mcampos-quinn]

🙄 windows...