mod.rs•1.33 kB
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use serde::{Deserialize, Deserializer};
pub mod interpolator;
pub mod rmcp_ext;
/// Deserialize a string, and return `None` if it's empty. Useful for configuration fields like
/// `"foo": "${SOME_ENV_VAR:}"` that uses an env var if present without failing if missing.
pub fn none_if_empty_string<'de, D: Deserializer<'de>>(deserializer: D) -> Result<Option<String>, D::Error> {
let s: Option<String> = Deserialize::deserialize(deserializer)?;
match s {
Some(s) if s.is_empty() => Ok(None),
_ => Ok(s),
}
}