stream-tell ( stream -- n )
Factor handbook » Input and output » Streams » Stream protocol

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Vocabulary
io

Inputs

stream

a stream

Outputs

n	an integer

Word description
Returns the index of the stream pointer if the stream is seekable.

Notes
Stream seeking is not supported on streams that do not have a known length, e.g. TCP/IP streams.

See also
stream-seek, stream-seekable?, stream-length

Definition

IN: io

GENERIC: stream-tell ( stream -- n )

Methods

USING: accessors io io.streams.byte-array ;

M: byte-reader stream-tell i>> ;


USING: byte-vectors io sequences ;

M: byte-vector stream-tell length ; inline


USING: destructors io io.ports io.ports.private math ;

M: input-port stream-tell check-disposed port-tell - ;


USING: accessors io io.streams.limited ;

M: limited-stream stream-tell stream>> stream-tell ;


USING: destructors io io.ports io.ports.private math ;

M: output-port stream-tell check-disposed port-tell + ;


USING: accessors io io.streams.peek ;

M: peek-stream stream-tell stream>> stream-tell ;


USING: io sbufs sequences ;

M: sbuf stream-tell length ; inline


USING: accessors io io.streams.string ;

M: string-reader stream-tell i>> ;


USING: accessors io io.streams.throwing ;

M: throws-on-eof-stream stream-tell stream>> stream-tell ;