Handling of windows compatible file names

[Rello]

Scope

• An auto rename for new files will be implemented in all frontends
  • 1st local rename
  • 2nd upload/PUT/POST
• This applies if the "enforce windows compatible filenames" setting is activated on the instance
• There will not be any user dialog for the rename
• Standard rename rules will be implemented in all frontends (no fetched from server)
• Files will be renamed locally before uploading

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Out of Scope

• Existing files - A concept will be drafted separately

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Ruleset

• name with trailing/leading whitespace
• name ending with a "."
• names with not-allowed unicode char (https://docs.microsoft.com/windows/desktop/intl/unicode)
• names with https://docs.microsoft.com/windows/desktop/intl/surrogates-and-supplementary-characters
• replace every non-valid character with a "_"
• e.g. ".file" -> "_file"

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ToDo

• Implement standard rules
• Auto rename new file before uploading
• Warning dialog for file extension change