Method parse

nodedb/src/control/server/resp/command.rs:20–40

Parse a RESP value (expected to be an array of bulk strings) into a command. Returns `None` if the value is not a valid command (empty array, non-array, etc.).

(value: &RespValue)

    ///
    /// Returns `None` if the value is not a valid command (empty array, non-array, etc.).
    pub fn parse(value: &RespValue) -> Option<Self> {
        let items = match value {
            RespValue::Array(Some(items)) if !items.is_empty() => items,
            _ => return None,
        };

        let name = match &items[0] {
            RespValue::BulkString(Some(data)) => String::from_utf8_lossy(data).to_uppercase(),
            _ => return None,
        };

        let args: Vec<Vec<u8>> = items[1..]
            .iter()
            .filter_map(|item| match item {
                RespValue::BulkString(Some(data)) => Some(data.clone()),
                _ => None,
            })
            .collect();

        Some(Self { name, args })
    }

    /// Get argument at index as bytes. Returns None if out of bounds.
    pub fn arg(&self, index: usize) -> Option<&[u8]> {