Class CONTENT-LENGTH:CONTENT-LENGTH-STREAM
Description:
A content-length-stream is an output stream with one slot, a counter of the number of characters sent to the stream so far.
Accessor CONTENT-LENGTH:CONTENT-LENGTH
Syntax:
content-length:content-length stream => length
(setf content-length:content-length stream) new-length
Arguments and Values:
stream - A stream object of type content-length-stream.
length - The number of characters written to the stream.
Description:
Returns the number of characters written to the stream so far.
Function CONTENT-LENGTH:MAKE-CONTENT-LENGTH-STREAM
Syntax:
content-length:make-content-length-stream => stream
Arguments and Values:
stream - A stream object of type content-length-stream.
Description:
Equivalent to (make-instance 'content-length:content-length-stream)
Macro CONTENT-LENGTH:WITH-OUTPUT-CONTENT-LENGTH
Syntax:
content-length:with-output-content-length var &body body => length
Arguments and Values:
var - a variable name.
length - the number of characters written to the stream.
Description:
content-length:with-output-content-length creates a content-length stream, performs a series of operations that may send results to this stream, and then closes the stream. The body is executed as an implicit progn with var bound to a content-length stream. All output to that stream is counted. The stream is automatically closed on exit from content-length:with-output-content-length, no matter whether the exit is normal or abnormal. The content-length stream to which the variable var is bound has dynamic extent; its extent ends when the form is exited. The consequences are undefined if an attempt is made to assign the variable var.
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