Import Upstream version 3a1upstream/3a1

1 files changed, 52 insertions, 21 deletions

diff --git a/gambit.init b/gambit.init
index 538fb47..2e8a10d 100644
--- a/gambit.init
+++ b/gambit.init
@@ -11,7 +11,6 @@
 ;;; From: barnett@armadillo.urich.edu (Lewis Barnett)
 ;;; Relative pathnames for Slib in MacGambit
 ;;; Hacked yet again for Gambit v2.4, Jan 1997, by Mike Pope
-
 (define (software-type) 'MACOS)		; for MacGambit.
 (define (software-type) 'UNIX)		; for Unix platforms.
 
@@ -20,7 +19,6 @@
 ;;; (scheme-implementation-home-page) should return a (string) URI
 ;;; (Uniform Resource Identifier) for this scheme implementation's home
 ;;; page; or false if there isn't one.
-
 (define (scheme-implementation-home-page)
   "http://www.iro.umontreal.ca/~gambit/index.html")
 
@@ -35,10 +33,9 @@
 ;;; (implementation-vicinity) should be defined to be the pathname of
 ;;; the directory where any auxillary files to your Scheme
 ;;; implementation reside.
-
 (define implementation-vicinity
   (case (software-type)
-    ((UNIX)	(lambda () "/usr/local/src/scheme/"))
+    ((UNIX)	(lambda () "/usr/local/share/gambc/"))
     ((VMS)	(lambda () "scheme$src:"))
     ((MS-DOS)	(lambda () "C:\\scheme\\"))
     ((WINDOWS)  (lambda () "c:/scheme/"))
@@ -53,10 +50,9 @@
 
 ;;; (library-vicinity) should be defined to be the pathname of the
 ;;; directory where files of Scheme library functions reside.
-
+;;;
 ;;; This assumes that the slib files are in a folder
 ;;; called slib in the same directory as the MacGambit Interpreter.
-
 (define library-vicinity
   (let ((library-path
 	 (case (software-type)
@@ -71,20 +67,24 @@
 ;;; (home-vicinity) should return the vicinity of the user's HOME
 ;;; directory, the directory which typically contains files which
 ;;; customize a computer environment for a user.
-
-(define (home-vicinity) #f)
+(define home-vicinity
+  (case (software-type)
+    ((UNIX)	(lambda () "~/"))
+    ((VMS)	(lambda () "~:"))
+    ((MS-DOS)	(lambda () "~\\"))
+    ((WINDOWS)  (lambda () "~/"))
+    ((MACOS)    (lambda () "~:"))))
 
 ;;; *FEATURES* should be set to a list of symbols describing features
 ;;; of this implementation.  Suggestions for features are:
-
 (define *features*
       '(
 	source				;can load scheme source files
 					;(slib:load-source "filename")
 	compiled			;can load compiled files
 					;(slib:load-compiled "filename")
-	rev4-report			;conforms to
-;	rev3-report			;conforms to
+	r4rs				;conforms to
+;	r3rs				;conforms to
 	ieee-p1178			;conforms to
 ;	srfi				;srfi-0, COND-EXPAND finds all srfi-*
 	sicp				;runs code from Structure and
@@ -104,7 +104,7 @@
 	rationalize
 	delay				;has DELAY and FORCE
 	with-file			;has WITH-INPUT-FROM-FILE and
-					;WITH-OUTPUT-FROM-FILE
+					;WITH-OUTPUT-TO-FILE
 	string-port			;has CALL-WITH-INPUT-STRING and
 					;CALL-WITH-OUTPUT-STRING
 	transcript			;TRANSCRIPT-ON and TRANSCRIPT-OFF
@@ -123,6 +123,7 @@
 ;	object->string
 ;	format
 	trace				;has macros: TRACE and UNTRACE
+	break
 ;	compiler			;has (COMPILER)
 ;	ed				;(ED) is editor
 	system				;posix (system <string>)
@@ -163,6 +164,37 @@
 ;;; CALL-WITH-INPUT-STRING and CALL-WITH-OUTPUT-STRING are the string
 ;;; port versions of CALL-WITH-*PUT-FILE.
 
+(define (make-exchanger obj)
+  (lambda (rep) (let ((old obj)) (set! obj rep) old)))
+(define (open-file filename modes)
+  (case modes
+    ((r rb) (open-input-file filename))
+    ((w wb) (open-output-file filename))
+    (else (slib:error 'open-file 'mode? modes))))
+(define (port? obj) (or (input-port? port) (output-port? port)))
+(define (call-with-open-ports . ports)
+  (define proc (car ports))
+  (cond ((procedure? proc) (set! ports (cdr ports)))
+	(else (set! ports (reverse ports))
+	      (set! proc (car ports))
+	      (set! ports (reverse (cdr ports)))))
+  (let ((ans (apply proc ports)))
+    (for-each close-port ports)
+    ans))
+(define (close-port port)
+  (cond ((input-port? port)
+	 (close-input-port port)
+	 (if (output-port? port) (close-output-port port)))
+	((output-port? port) (close-output-port port))
+	(else (slib:error 'close-port 'port? port))))
+
+(define (browse-url url)
+  (define (try cmd) (eqv? 0 (system (sprintf #f cmd url))))
+  (or (try "netscape-remote -remote 'openURL(%s)'")
+      (try "netscape -remote 'openURL(%s)'")
+      (try "netscape '%s'&")
+      (try "netscape '%s'")))
+
 ;;; "rationalize" adjunct procedures.
 (define (find-ratio x e)
   (let ((rat (rationalize x e)))
@@ -190,10 +222,6 @@
 ;(define macro:eval slib:eval)
 ;(define macro:load load)
 
-; Set up defmacro in terms of gambit's define-macro
-(define-macro (defmacro name args . body)
-  `(define-macro (,name ,@args) ,@body))
-
 (define *defmacros*
   (list (cons 'defmacro
 	      (lambda (name parms . body)
@@ -241,12 +269,14 @@
 	  (evl o))
 	(set! *load-pathname* old-load-pathname)))))
 
+(define print-call-stack identity)	;noop
+
 (define slib:warn
   (lambda args
     (let ((cep (current-error-port)))
       (if (provided? 'trace) (print-call-stack cep))
       (display "Warn: " cep)
-      (for-each (lambda (x) (display x cep)) args))))
+      (for-each (lambda (x) (display #\  cep) (write x cep)) args))))
 
 ;; define an error procedure for the library
 (define (slib:error . args)
@@ -264,7 +294,6 @@
 
 ;;; Define these if your implementation's syntax can support it and if
 ;;; they are not already defined.
-
 (define (1+ n) (+ n 1))
 (define (-1+ n) (- n 1))
 (define 1- -1+)
@@ -284,17 +313,19 @@
 
 ;;; (SLIB:LOAD-SOURCE "foo") should load "foo.scm" or with whatever
 ;;; suffix all the module files in SLIB have.  See feature 'SOURCE.
-
 (define slib:load-source load)
 
 ;;; (SLIB:LOAD-COMPILED "foo") should load the file that was produced
 ;;; by compiling "foo.scm" if this implementation can compile files.
 ;;; See feature 'COMPILED.
-
 (define slib:load-compiled load)
 
 ;;; At this point SLIB:LOAD must be able to load SLIB files.
-
 (define slib:load slib:load-source)
 
+(slib:eval '(define-macro (defmacro name parms . body)
+	      (set! *defmacros* (cons `(cons ',name (lambda ,parms ,@body))
+				      *defmacros*))
+	      `(define-macro (,name ,@parms) ,@body)))
+
 (slib:load (in-vicinity (library-vicinity) "require"))