sxyazi/yazi · error · anyhow::Error

empty body

Error message

empty body

What it means

The fourth component of a DDS payload line (everything after the third comma) is the JSON body handed to Ember::from_str(kind, body). "empty body" means splitn(4, ',') produced no fourth component — the line has fewer than three commas, so there is no body to parse. A trailing comma is a different failure: it yields an empty string that passes here and fails inside Ember::from_str.

Source

Thrown at yazi-dds/src/payload.rs:70

		emit!(Call(relay!(app:accept_payload).with_any("payload", self)));
	}
}

impl FromStr for Payload<'static> {
	type Err = anyhow::Error;

	fn from_str(s: &str) -> Result<Self, Self::Err> {
		let mut parts = s.splitn(4, ',');

		let kind = parts.next().ok_or_else(|| anyhow!("empty kind"))?;

		let receiver =
			parts.next().and_then(|s| s.parse().ok()).ok_or_else(|| anyhow!("invalid receiver"))?;

		let sender =
			parts.next().and_then(|s| s.parse().ok()).ok_or_else(|| anyhow!("invalid sender"))?;

		let body = parts.next().ok_or_else(|| anyhow!("empty body"))?;

		Ok(Self { receiver, sender, body: Ember::from_str(kind, body)? })
	}
}

impl<'a> From<Ember<'a>> for Payload<'a> {
	fn from(value: Ember<'a>) -> Self { Self::new(value) }
}

impl TryFrom<ActionCow> for Payload<'_> {
	type Error = anyhow::Error;

	fn try_from(mut a: ActionCow) -> Result<Self, Self::Error> {
		a.take_any2("payload").ok_or_else(|| anyhow!("Missing 'payload' in Payload"))?
	}
}

impl Display for Payload<'_> {

View on GitHub (pinned to 94abcfa92f)

Solutions

1. Append the JSON body: `hover,0,123,{}`
2. Make sure the transport preserves whole lines (JSON bodies must stay on one line)
3. Reject lines with fewer than 4 split components before calling from_str

Example fix

// before
Payload::from_str("hi,0,1")?; // no body

// after
Payload::from_str("hi,0,1,{}")?;

// Require a body component before parsing:
ensure!(line.splitn(4, ',').nth(3).is_some(), "empty body");
let p = Payload::from_str(line)?;

When it happens

Trigger: Lines like `hover,0,123` (three fields, body never arrived) or any input truncated before the body section — e.g. a line-based transport splitting long JSON bodies at an embedded newline.

Common situations: Truncated output from `ya pub` or a remote peer; hand-typed test messages without the JSON part; log scrapers losing the tail of long lines.

Related errors

• empty kind
• invalid receiver
• invalid sender
• Missing 'payload' in Payload

AI-assisted analysis of sxyazi/yazi@94abcfa92f (2026-08-16). Data as JSON: /api/errors/46e2ac7a54fb0477. Report an issue: GitHub.