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encode_pv_request

spvirit_codec::spvd_encode

Function encode_pv_request 

Source 
pub fn encode_pv_request(fields: &[&str], is_be: bool) -> Vec<u8> ⓘ
Expand description

Build a pvRequest structure for the given field paths.

Each entry may be a simple top-level name (e.g. "value") or a dot-separated nested path (e.g. "alarm.severity", "timeStamp.secondsPastEpoch").

A bare name selects the entire sub-tree rooted at that field. Nested paths produce the corresponding nested sub-structure in the pvRequest so that a PVA server can filter down to the requested leaves.

Examples:

  • encode_pv_request(&["value", "alarm", "timeStamp"], false) → field(value,alarm,timeStamp)
  • encode_pv_request(&["alarm.severity"], false) → field(alarm{severity})

The output is the full type-described pvRequest structure: a 0x80 tag followed by the structure descriptor and empty-struct field values.