Struct ReadStdin 

pub struct ReadStdin;

READ_STDIN([match_regex]) - Read lines piped on standard input.

Emits (line_num, line) rows. Optional regex pre-filters lines before materialisation. Erroring on TTY input prevents the engine from blocking forever waiting on a keyboard when the user forgets the pipe.

Stdin is consumable, so it is read once per process and cached. This keeps the function composable: multiple READ_STDIN() references in the same query (CTEs, self-joins) see the same rows. The regex filter is applied per call against the cached buffer.

Trait Implementations

impl TableGenerator for ReadStdin

fn name(&self) -> &str

Get the name of the generator function (e.g., “GENERATE_PRIMES”)

fn columns(&self) -> Vec<DataColumn>

Get the column definitions for the generated table

fn generate(&self, args: Vec<DataValue>) -> Result<Arc<DataTable>>

Generate the table based on the provided arguments Arguments are evaluated expressions from the SQL query

fn description(&self) -> &str

Get a description of what this generator does

fn arg_count(&self) -> usize

Get the expected number of arguments