dot/lisp-init.lisp: Get CLisp to save and restore its REPL history.

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;;; -*-lisp-*-

(cl:defpackage #:mdw-hacks
  (:use #:cl))
(cl:defparameter mdw-hacks::*previous-package* cl:*package*)
(cl:in-package #:mdw-hacks)

;; Shut up.
(setf *load-verbose* nil
      *compile-verbose* nil)

#+cmu
(setf ext:*gc-verbose* nil
      ext:*require-verbose* nil)

;; Obtain ASDF from somewhere.
(require "asdf")

;; Get CMU CL to quit on EOF.
#+cmu
(setf ext:*batch-mode* t)

;; Tell SBCL where to find its source source.
#+sbcl
(sb-ext:set-sbcl-source-location #p"/usr/share/sbcl-source/")

;; Tell some Lisps about my home directory.
#+(and unix (or sbcl clisp))
(let* ((homestring (or #+sbcl (sb-ext:posix-getenv "HOME")
		       #+clisp (ext:getenv "HOME")
		       #+cmu (unix:unix-getenv "HOME")
		       "/home/mdw"))
       (home (pathname (concatenate 'string homestring "/"))))
  (setf (logical-pathname-translations "HOME")
	`(("HOME:**;*.*.*" ,(merge-pathnames "**/*.*" home nil)))
	(logical-pathname-translations "CL")
	'(("CL:SOURCE;**;*.*.*" #p"/usr/share/common-lisp/source/**/*.*")
	  ("CL:SYSTEMS;**;*.*.*" #p"/usr/share/common-lisp/systems/**/*.*"))))

;; Various fixings.
#+clisp
(setf custom:*parse-namestring-ansi* t)

;; CLisp history.
#+(and clisp readline)
(progn
  (export '(*history-file* *history-size*))
  (defvar *history-file* (format nil "~A/.clisp-history" (ext:getenv "HOME"))
    "File to preserve the REPL history.")
  (defvar *history-size* 1000)
  (unless (and (probe-file *history-file*) nil)
    (let (old-umask stream)
      ;; Ugh.  There's no proper open(2) veneer.  Play with umask(2) to avoid
      ;; a window in which an adversary can open the file.
      (unwind-protect
	   (setf old-umask (os:umask #o077)
		 stream (open *history-file*
			      :direction :output
			      :if-exists :overwrite
			      :if-does-not-exist :create))
	(when stream (close stream))
	(when old-umask (os:umask old-umask)))))
  (readline:read-history *history-file*)
  (if *history-size* (readline:stifle-history *history-size*)
      (readline:unstifle-history))
  (push (lambda () (readline:write-history *history-file*))
	custom:*fini-hooks*))

;; Shebang.
(set-dispatch-macro-character
 #\# #\!
 (lambda (stream char arg)
   (declare (ignore char arg))
   (values (read-line stream))))

;; Start up swank.
(export 'crank-swank)
(defun crank-swank (&rest args)
  (let ((swank (find-package "SWANK")))
    (unless swank
      (load "/usr/share/common-lisp/source/slime/swank-loader.lisp")
      (funcall (find-symbol "INIT" (find-package "SWANK-LOADER")))
      (setf swank (find-package "SWANK")))
    (set (find-symbol "*GLOBAL-DEBUGGER*" swank) nil)
    (apply (find-symbol "CREATE-SERVER" swank) args)))

;; Treat warnings as, err, warnings.
#+asdf
(setf asdf:*compile-file-failure-behaviour* :warn)

;; Done.
(pushnew :mdw *features*)
;;#+(and cmu mp) (mp::startup-idle-and-top-level-loops)
(setf *package* *previous-package*)