ckbez 1.0.0

CKB Easy is an experimental project that aims to provide human-friendly interfaces for common CKB operations.
Documentation 
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pub fn encode_byte(data: u8) -> Vec<u8> {
    vec![data]
}

pub fn decode_byte(data: &[u8]) -> u8 {
    assert_eq!(data.len(), 1);
    data[0]
}

pub fn encode_byte32(data: [u8; 32]) -> Vec<u8> {
    data.to_vec()
}

pub fn decode_byte32(data: &[u8]) -> [u8; 32] {
    assert_eq!(data.len(), 32);
    let mut r = [0u8; 32];
    r.copy_from_slice(data);
    r
}

pub fn encode_bytes(data: &[u8]) -> Vec<u8> {
    let mut r = vec![];
    r.extend(&(data.len() as u32).to_le_bytes());
    r.extend(data);
    r
}

pub fn decode_bytes(data: &[u8]) -> Vec<u8> {
    assert!(data.len() >= 4);
    let l = u32::from_le_bytes(data[0..4].try_into().unwrap());
    assert_eq!(l as usize, data.len() - 4);
    data[4..].to_vec()
}

pub fn encode_u32(data: u32) -> Vec<u8> {
    data.to_le_bytes().to_vec()
}

pub fn decode_u32(data: &[u8]) -> u32 {
    assert_eq!(data.len(), 4);
    u32::from_le_bytes(data.try_into().unwrap())
}

pub fn encode_u64(data: u64) -> Vec<u8> {
    data.to_le_bytes().to_vec()
}

pub fn decode_u64(data: &[u8]) -> u64 {
    assert_eq!(data.len(), 8);
    u64::from_le_bytes(data.try_into().unwrap())
}

pub fn encode_u128(data: u128) -> Vec<u8> {
    data.to_le_bytes().to_vec()
}

pub fn decode_u128(data: &[u8]) -> u128 {
    assert_eq!(data.len(), 16);
    u128::from_le_bytes(data.try_into().unwrap())
}

pub fn encode_dynvec(data: Vec<Vec<u8>>) -> Vec<u8> {
    let mut head: Vec<u8> = vec![];
    let mut body: Vec<u8> = vec![];
    let head_size = 4 + 4 * data.len();
    let mut body_size = 0;
    for item in data {
        let size = head_size + body_size;
        let size = size as u32;
        head.extend(&size.to_le_bytes());
        body.extend(&item);
        body_size += item.len();
    }
    let size = head_size + body_size;
    let size = size as u32;
    [size.to_le_bytes().to_vec(), head, body].concat()
}

pub fn decode_dynvec(data: &[u8]) -> Vec<Vec<u8>> {
    assert!(data.len() >= 4);
    assert!(data.len() as u32 == u32::from_le_bytes(data[0..4].try_into().unwrap()));
    if data.len() == 4 {
        return Vec::new();
    }
    let nums = (u32::from_le_bytes(data[4..8].try_into().unwrap()) / 4 - 1) as usize;
    let mut head: Vec<usize> = vec![];
    for i in 0..nums {
        head.push(u32::from_le_bytes(data[i * 4 + 4..i * 4 + 8].try_into().unwrap()) as usize);
    }
    head.push(data.len());
    let mut body: Vec<Vec<u8>> = Vec::new();
    for i in 0..nums {
        body.push(data[head[i]..head[i + 1]].to_vec());
    }
    body
}

pub fn encode_fixvec(data: Vec<Vec<u8>>) -> Vec<u8> {
    let mut r = vec![];
    r.extend(&(data.len() as u32).to_le_bytes());
    for e in data {
        r.extend(&e);
    }
    r
}

pub fn decode_fixvec(data: &[u8]) -> Vec<Vec<u8>> {
    assert!(data.len() >= 4);
    let icnt = u32::from_le_bytes(data[0..4].try_into().unwrap()) as usize;
    let mut body: Vec<Vec<u8>> = vec![];
    if icnt > 0 {
        let size = data[4..].len() / icnt;
        for i in 0..icnt {
            body.push(data[4 + i * size..4 + i * size + size].to_vec());
        }
    }
    body
}

pub fn encode_seq(data: Vec<Vec<u8>>) -> Vec<u8> {
    let mut r: Vec<u8> = vec![];
    for e in data {
        r.extend(&e)
    }
    r
}

pub fn decode_seq(data: &[u8], size: &[usize]) -> Vec<Vec<u8>> {
    let mut r: Vec<Vec<u8>> = vec![];
    let mut s = 0;
    for n in size {
        r.push(data[s..s + n].to_vec());
        s += n;
    }
    r
}