Function osmflat::find_tag_by

pub fn find_tag_by(
    archive: &Osm, 
    range: Range<u64>, 
    predicate: impl FnMut(&[u8], &[u8]) -> bool
) -> Option<&[u8]>

Finds the first tag in the given range which satisfies the predicate applied to the key and value and returns the corresponding value.

Note that the predicate function is called on the whole key block and value block. These are zero (\0) divided blocks of bytes that start at the key resp. value, and contain the rest string data. In particular, the len of the block is not the len of the key resp. value. The user is responsible to check or find the zero terminator.