pub struct Alphabet { /* private fields */ }Expand description
An alphabet defines the 64 ASCII characters (symbols) used for base64.
Common alphabets are provided as constants, and custom alphabets
can be made via from_str or the TryFrom<str> implementation.
Examples
Building and using a custom Alphabet:
let custom = base64::alphabet::Alphabet::new("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/").unwrap();
let engine = base64::engine::GeneralPurpose::new(
&custom,
base64::engine::general_purpose::PAD);Building a const:
use base64::alphabet::Alphabet;
static CUSTOM: Alphabet = {
// Result::unwrap() isn't const yet, but panic!() is OK
match Alphabet::new("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/") {
Ok(x) => x,
Err(_) => panic!("creation of alphabet failed"),
}
};Building a lazy_static:
use base64::{
alphabet::Alphabet,
engine::{general_purpose::GeneralPurpose, GeneralPurposeConfig},
};
lazy_static::lazy_static! {
static ref CUSTOM: Alphabet = Alphabet::new("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/").unwrap();
}