use core::fmt;

use std::io;

use arcstr::ArcStr;

pub fn write_comma_io<T>(mut file: T, comma: &mut bool) -> io::Result<()>

where T: io::Write {

if *comma {

file.write_all(b",")?;

}

*comma = true;

Ok(())

}

pub fn write_comma_fmt<T>(mut file: T, comma: &mut bool) -> fmt::Result

where T: fmt::Write {

if *comma {

file.write_str(",")?;

}

*comma = true;

Ok(())

}

pub type SmolStr = ArcStr;

pub mod base64 {

use base64::Engine;

use serde::{

Deserialize,

Deserializer,

Serialize,

Serializer,

};

pub fn serialize<S: Serializer>(v: &Vec<u8>, s: S) -> Result<S::Ok, S::Error> {

let base64 = base64::engine::general_purpose::STANDARD.encode(v);

String::serialize(&base64, s)

}

pub fn deserialize<'de, D: Deserializer<'de>>(d: D) -> Result<Vec<u8>, D::Error> {

let base64 = String::deserialize(d)?;

base64::engine::general_purpose::STANDARD

.decode(base64.as_bytes())

.map_err(serde::de::Error::custom)

}

}