stream-external-format - ANSI Common Lisp

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stream-external-format (Function)

Syntax:

— Function: stream-external-format stream → format

Arguments and Values:

stream—a file stream.

format—an external file format.

Description:

Returns an external file format designator for the stream.

Examples:

 (with-open-file (stream "test" :direction :output)
   (stream-external-format stream))
→ :DEFAULT
or→ :ISO8859/1-1987
or→ (:ASCII :SAIL)
or→ ACME::PROPRIETARY-FILE-FORMAT-17
or→ #<FILE-FORMAT :ISO646-1983 2343673>

See Also:

the :external-format argument to the function open and the with-open-file macro.

Notes:

The format returned is not necessarily meaningful to other implementations.