Struct Bytes 

pub struct Bytes<'a>(pub &'a [u8]);

Display given bytes, if possible, by printing the ascii characters through ~ (except \) as is, and escaping '\r', '\n', '\t', and '\\'. If other characters are present everything is printed hexadecimal.

Intended to be used with precision to limit the size of the printed string.

use pubhubs::misc::fmt_ext;

// use precision to limit size to 9 characters
assert_eq!(format!("{:.9}", fmt_ext::Bytes(b"1234567890")).as_str(), "123456...");

// hex is used if any irregular bytes are found
assert_eq!(format!("{}", fmt_ext::Bytes(b"\0 <- zero")).as_str(), "00203c2d207a65726f");

// tabs and newlines are `\`es are escaped
assert_eq!(format!("{}", fmt_ext::Bytes(b"\t\r\n\\")).as_str(), "\\t\\r\\n\\\\");

// otherwise the bytes are left unchanged:
assert_eq!(format!("{}", fmt_ext::Bytes((b' '..=b'~').collect::<Vec<u8>>().as_slice())).as_str(),
    " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\\\]^_`abcdefghijklmnopqrstuvwxyz{|}~");

Tuple Fields

0: &'a [u8]

Trait Implementations

impl Display for Bytes<'_>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.