miniscript 6.0.0

Miniscript: a subset of Bitcoin Script designed for analysis
Documentation 
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use bitcoin;
use bitcoin::blockdata::script;
use bitcoin::Script;
pub(crate) fn varint_len(n: usize) -> usize {
    bitcoin::VarInt(n as u64).len()
}

// Helper function to calculate witness size
pub(crate) fn witness_size(wit: &[Vec<u8>]) -> usize {
    wit.iter().map(Vec::len).sum::<usize>() + varint_len(wit.len())
}

pub(crate) fn witness_to_scriptsig(witness: &[Vec<u8>]) -> Script {
    let mut b = script::Builder::new();
    for wit in witness {
        if let Ok(n) = script::read_scriptint(wit) {
            b = b.push_int(n);
        } else {
            b = b.push_slice(wit);
        }
    }
    b.into_script()
}