Ability to insert files piped to insert-files stdin

[simonw]

Inserting files by piping them in should work - but since a filename cannot be derived this will need a --name blah.gif option.

cat blah.gif | sqlite-utils insert-files files.db files - --name=blah.gif

Originally posted by @simonw in #122 (comment)

[simonw]

I tried to get this working but it was a bit tricky because - doesn't behave like a regular pathlib.Path - needs a bit more thought on how the implementation would work.

[simonw]

Maybe could do this using an improved version of this lambda? Could teach it to look for - and read from sys.stdin if it sees it.

sqlite-utils/sqlite_utils/cli.py

Line 839 in 710454d

"content": lambda p: p.resolve().read_bytes(),

[simonw]

Documentation at the bottom of this section: https://github.com/simonw/sqlite-utils/blob/8fe1e6d1be021aeeb8f08b0f77f03b75a83b6f75/docs/cli.rst#inserting-binary-data-from-files