似乎没有 ANSI 标准方法可以执行外部程序并获得其输出,如下 SBCL 特殊代码所做的那样:
(defmacro with-input-from-program ((stream program program-args environment)
&body body)
"Creates an new process of the specified by PROGRAM using
PROGRAM-ARGS as a list of the arguments to the program. Binds the
stream variable to an input stream from which the output of the
process can be read and executes body as an implicit progn."
#+sbcl
(let ((process (gensym)))
`(let ((,process (sb-ext::run-program ,program
,program-args
:output :stream
:environment ,environment
:wait nil)))
(when ,process
(unwind-protect
(let ((,stream (sb-ext:process-output ,process)))
,@body)
(sb-ext:process-wait ,process)
(sb-ext:process-close ,process))))))
以下 CCL 代码报告“错误:值 # 不是预期类型(AND CCL::BINARY-STREAM INPUT-STREAM)”
#+clozure
(let ((process (gensym)))
`(let ((,process (ccl:run-program "/bin/sh" (list "-c" (namestring ,program))
:input nil :output :stream :error :stream
:wait nil)))
(when ,process
(unwind-protect
(let ((,stream (ccl::external-process-output-stream ,process)))
,@body)
;(ccl:process-wait (ccl:process-whostate ,process) nil)
(close (ccl::external-process-output-stream ,process))
(close (ccl::external-process-error-stream ,process))))))
我对CCL知之甚少。我想知道如何修改此代码以支持 CCL?
任何建议表示赞赏!