refactor PRINT-NOT-READABLE condition signaling
[sbcl.git] / src / code / toplevel.lisp
index 0868844..7f71449 100644 (file)
 
 (defvar *sysinit-pathname-function* #'sysinit-pathname
   #!+sb-doc
-  "Designator for a function of zero arguments called to obtain a pathname
-designator for the default sysinit file, or NIL. If the function returns NIL,
-no sysinit file is used unless one has been specified on the command-line.")
+  "Designator for a function of zero arguments called to obtain a
+pathname designator for the default sysinit file, or NIL. If the
+function returns NIL, no sysinit file is used unless one has been
+specified on the command-line.")
 
 (defvar *userinit-pathname-function* #'userinit-pathname
   #!+sb-doc
-  "Designator for a function of zero arguments called to obtain a pathname
-designator or a stream for the default userinit file, or NIL. If the function
-returns NIL, no userinit file is used unless one has been specified on the
-command-line.")
+  "Designator for a function of zero arguments called to obtain a
+pathname designator or a stream for the default userinit file, or NIL.
+If the function returns NIL, no userinit file is used unless one has
+been specified on the command-line.")
 
 \f
 ;;;; miscellaneous utilities for working with with TOPLEVEL
@@ -75,16 +76,28 @@ command-line.")
 ;;; handled appropriately.
 (defmacro handling-end-of-the-world (&body body)
   (with-unique-names (caught)
-    `(let ((,caught (catch '%end-of-the-world
-                      (/show0 "inside CATCH '%END-OF-THE-WORLD")
-                      (unwind-protect
-                           (progn ,@body)
-                        (call-hooks "exit" *exit-hooks*)))))
-      (/show0 "back from CATCH '%END-OF-THE-WORLD, flushing output")
-      (flush-standard-output-streams)
-      (sb!thread::terminate-session)
-      (/show0 "calling UNIX-EXIT")
-      (sb!unix:unix-exit ,caught))))
+    `(without-interrupts
+       (let ((,caught
+               (catch '%end-of-the-world
+                 (unwind-protect
+                      (with-local-interrupts ,@body (quit))
+                   (handler-case
+                       (with-local-interrupts
+                         (call-hooks "exit" *exit-hooks* :on-error :warn))
+                     (serious-condition ()
+                       1))))))
+         ;; If user called QUIT and exit hooks were OK, the status is what it
+         ;; is -- even eg. streams cannot be flushed anymore. Even if
+         ;; something goes wrong now, we still report what was asked. We still
+         ;; want to have %END-OF-THE-WORLD visible, though.
+         (catch '%end-of-the-world
+           (handler-case
+               (unwind-protect
+                    (progn
+                      (flush-standard-output-streams)
+                      (sb!thread::terminate-session))
+                 (sb!unix:unix-exit ,caught))
+             (serious-condition ())))))))
 \f
 ;;;; working with *CURRENT-ERROR-DEPTH* and *MAXIMUM-ERROR-DEPTH*
 
@@ -245,30 +258,19 @@ any non-negative real number."
          (values "sysinit" *sysinit-pathname-function*))
         (:user
          (values "userinit" *userinit-pathname-function*)))
-    (flet ((process-stream (stream pathname)
-             (with-simple-restart (abort "Skip rest of ~A file ~S."
-                                         context (native-namestring pathname))
-               (loop
-                 (with-simple-restart
-                     (continue "Ignore error and continue processing ~A file ~S."
-                               context (native-namestring pathname))
-                   (let ((form (read stream nil stream)))
-                     (if (eq stream form)
-                         (return-from process-init-file nil)
-                         (eval form))))))))
-      (if specified-pathname
-          (with-open-file (stream (parse-native-namestring specified-pathname)
-                                  :if-does-not-exist nil)
-            (if stream
-                (process-stream stream (pathname stream))
-                (cerror "Ignore missing init file"
-                        "The specified ~A file ~A was not found."
-                        context specified-pathname)))
-          (let ((default (funcall default-function)))
-            (when default
-              (with-open-file (stream (pathname default) :if-does-not-exist nil)
-                (when stream
-                  (process-stream stream (pathname stream))))))))))
+    (if specified-pathname
+        (with-open-file (stream (parse-native-namestring specified-pathname)
+                                :if-does-not-exist nil)
+          (if stream
+              (load-as-source stream :context context)
+              (cerror "Ignore missing init file"
+                      "The specified ~A file ~A was not found."
+                      context specified-pathname)))
+        (let ((default (funcall default-function)))
+          (when default
+            (with-open-file (stream (pathname default) :if-does-not-exist nil)
+              (when stream
+                (load-as-source stream :context context))))))))
 
 (defun process-eval/load-options (options)
   (/show0 "handling --eval and --load options")
@@ -286,19 +288,39 @@ any non-negative real number."
                (:load
                 (with-simple-restart (continue "Ignore runtime option --load ~S."
                                                value)
-                  (load (native-pathname value))))))
+                  (load (native-pathname value))))
+               (:quit
+                (quit))))
            (flush-standard-output-streams)))
     (with-simple-restart (abort "Skip rest of --eval and --load options.")
       (dolist (option options)
         (process-1 option)))))
 
 (defun process-script (script)
-  (let ((pathname (native-pathname script)))
+  (flet ((load-script (stream)
+           ;; Scripts don't need to be stylish or fast, but silence is usually a
+           ;; desirable quality...
+           (handler-bind (((or style-warning compiler-note) #'muffle-warning)
+                          (stream-error (lambda (e)
+                                          ;; Shell-style.
+                                          (when (member (stream-error-stream e)
+                                                        (list *stdout* *stdin* *stderr*))
+                                            (quit)))))
+             ;; Let's not use the *TTY* for scripts, ok? Also, normally we use
+             ;; synonym streams, but in order to have the broken pipe/eof error
+             ;; handling right we want to bind them for scripts.
+             (let ((*terminal-io* (make-two-way-stream *stdin* *stdout*))
+                   (*debug-io* (make-two-way-stream *stdin* *stderr*))
+                   (*standard-input* *stdin*)
+                   (*standard-output* *stdout*)
+                   (*error-output* *stderr*))
+               (load stream :verbose nil :print nil)))))
     (handling-end-of-the-world
-      (with-open-file (f pathname :element-type :default)
-        (sb!fasl::maybe-skip-shebang-line f)
-        (load f :verbose nil :print nil)
-        (quit)))))
+      (if (eq t script)
+          (load-script *stdin*)
+          (with-open-file (f (native-pathname script) :element-type :default)
+            (sb!fasl::maybe-skip-shebang-line f)
+            (load-script f))))))
 
 ;; Errors while processing the command line cause the system to QUIT,
 ;; instead of trying to go into the Lisp debugger, because trying to
@@ -336,6 +358,8 @@ any non-negative real number."
         (noprint nil)
         ;; Has a --script option been seen?
         (script nil)
+        ;; Quit after processing other options?
+        (finally-quit nil)
         ;; everything in *POSIX-ARGV* except for argv[0]=programname
         (options (rest *posix-argv*)))
 
@@ -362,7 +386,7 @@ any non-negative real number."
                     (setf disable-debugger t
                           no-userinit t
                           no-sysinit t
-                          script (pop-option))
+                          script (if options (pop-option) t))
                     (return))
                    ((string= option "--sysinit")
                     (pop-option)
@@ -392,6 +416,16 @@ any non-negative real number."
                    ((string= option "--disable-debugger")
                     (pop-option)
                     (setf disable-debugger t))
+                   ((string= option "--quit")
+                    (pop-option)
+                    (setf finally-quit t))
+                   ((string= option "--non-interactive")
+                    ;; This option is short for --quit and --disable-debugger,
+                    ;; which are needed in combination for reliable non-
+                    ;; interactive startup.
+                    (pop-option)
+                    (setf finally-quit t)
+                    (setf disable-debugger t))
                    ((string= option "--end-toplevel-options")
                     (pop-option)
                     (return))
@@ -444,6 +478,8 @@ any non-negative real number."
               (process-init-file sysinit :system))
             (unless no-userinit
               (process-init-file userinit :user))
+            (when finally-quit
+              (push (list :quit) reversed-options))
             (process-eval/load-options (nreverse reversed-options))
             (when script
               (process-script script)