wait-to-read ( port -- eof? )

Vocabulary

io.ports

Inputs

port	an input-port

Outputs

eof?

a boolean

Word description

If the port's buffer has unread data, returns immediately, otherwise suspends the current thread until some data is available for reading. If the buffer was empty and no more data could be read, outputs t to indicate end-of-file; otherwise outputs f.

Definition

USING: accessors io.buffers kernel ;

IN: io.ports

: wait-to-read ( port -- eof? )
    dup buffer>> buffer-empty?
    [ dup (wait-to-read) buffer>> buffer-empty? ] [ drop f ] if
    ; inline