Allow for comment lines starting with '#' in databases

[SpiralBrad]

This patch allows database files to have comment lines starting with '#'.

Useful for dates, descriptions, data source info...

[frederic-mahe]

thanks @SpiralBrad that's a good idea! Could you please make the following changes?

1 - Isolate the conditional branch to limit the indentation level inside the loop, like in function extract_file().

for line in target_database:
    # skip comments
    if line.startswith("#"):
        continue
    hash_sha256, filename, _, _, hash_crc = line.strip().split("\t")[0:5]
    ...

2 - (optional) Store the comment character '#' in a variable at the beginning of the function. Maybe comment_prefix = '#'? (naming is hard)

[hotelvictorcharlie]

Whenever you update an SMDB file by running parse_pack (e.g. to create a commit/PR), all of the comments from the old file will get deleted. Is that what you want?

[SpiralBrad]

Whenever you update an SMDB file by running parse_pack (e.g. to create a commit/PR), all of the comments from the old file will get deleted. Is that what you want?

Nope! Hadn't thought that far ahead - good point.

Hold off on this PR thusly :)

[Drakonas]

Why not inline comments instead? Might be easier to handle in parsing.