wdg-base32 0.3.26

The Base32 Data Encoding
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13

fn b32_validation(ptd:*const u8,len:usize,pta:*const u8,max_pad:usize,pad:u8,rem:usize,min_len:usize)->B32DecodeError{
    if len<min_len {return B32DecodeError::InvalidLength;}
    if len==0 {return B32DecodeError::Null;}
    if len%rem!=0 {return B32DecodeError::InvalidLength;}
    let mut ind:isize=len as isize;
    #[allow(unused_parens)]
    unsafe{while({ind-=1;ind>0 && (*ptd.offset(ind)==61)}){}}
    let pdl=len-1-ind as usize;
    if pdl>max_pad {return B32DecodeError::InvalidPadding;}
    if ((pad>>pdl)&0b1)==0 {return B32DecodeError::InvalidPadding;}
    unsafe{while ind>-1{if *pta.offset(*ptd.offset(ind) as isize)==255{return B32DecodeError::InvalidByte;}ind-=1;}}
    return B32DecodeError::Null;
}