external-program

2016-08-25

EXTERNAL-PROGRAM enables running programs outside the Lisp process. It is an attempt to make the RUN-PROGRAM functionality in implementations like SBCL and CCL as portable as possible without sacrificing much in the way of power.

Note: This library is available via Quicklisp.

Here are some of the differences:

  • splits START (async) and RUN (sync) into two separate functions, rather than using a single function with a WAIT parameter that changes the function's specification;
  • offers a REPLACE-ENVIRONMENT-P parameter that indicates whether provided env vars should build on or replace the current environment.

Read the API documention for details. It?s a bit spartan, but should explain a lot.

Not all functionality is available on all platforms. EXTERNAL-PROGRAM provides warnings and errors when these limitations are encountered. But I'll try my best to work around them.

There is currently at least some support for:

  • Allegro (blocking only)
  • Armed Bear (blocking only)
  • CLisp
  • Clozure CL (n?e OpenMCL)
  • CMUCL
  • ECL
  • LispWorks
  • SBCL

In addition to some implementations only providing blocking calls, some don?t use $PATH ? the ones that don?t won?t find bareword commands, you?ll need to use a pathname.

Author
Greg Pfeil <greg@technomadic.org>
License
LLGPL
Categories
llgpl, system programming