use serde::{Deserialize, Deserializer, Serializer};
use std::fmt::Display;
use std::path::PathBuf;
use std::str::FromStr;
pub fn de_maybe_stringified<'de, D, T, E>(deserializer: D) -> Result<Option<T>, D::Error>
where
D: Deserializer<'de>,
T: FromStr<Err = E>,
E: Display,
{
let raw = String::deserialize(deserializer)?;
if raw.is_empty() {
Ok(None)
} else {
Ok(Some(raw.parse().map_err(serde::de::Error::custom)?))
}
}
pub fn ser_maybe_stringified<S, T>(field: &Option<T>, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
T: Display,
{
match field {
Some(inner) => serializer.serialize_str(&inner.to_string()),
None => serializer.serialize_str(""),
}
}
pub fn de_maybe_string<'de, D>(deserializer: D) -> Result<Option<String>, D::Error>
where
D: Deserializer<'de>,
{
de_maybe_stringified(deserializer)
}
pub fn de_maybe_path<'de, D>(deserializer: D) -> Result<Option<PathBuf>, D::Error>
where
D: Deserializer<'de>,
{
de_maybe_stringified(deserializer)
}
pub fn de_maybe_port<'de, D>(deserializer: D) -> Result<Option<u16>, D::Error>
where
D: Deserializer<'de>,
{
let port = u16::deserialize(deserializer)?;
if port == 0 {
Ok(None)
} else {
Ok(Some(port))
}
}