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-rw-r--r--scheme2c.init70
1 files changed, 48 insertions, 22 deletions
diff --git a/scheme2c.init b/scheme2c.init
index f1d9fe6..a9dbab9 100644
--- a/scheme2c.init
+++ b/scheme2c.init
@@ -13,23 +13,20 @@
;; Of course, if you make serious use of library functions you'll want
;; to compile them and use Scheme->C modules.
-
(define (software-type) 'UNIX)
;;; (scheme-implementation-type) should return the name of the scheme
;;; implementation loading this file.
-
(define (scheme-implementation-type) 'Scheme->C)
;;; (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) #f)
+(define (scheme-implementation-home-page)
+ "http://www-2.cs.cmu.edu/afs/cs/project/ai-repository/ai/lang/scheme/impl/scheme2c/0.html")
;;; (scheme-implementation-version) should return a string describing
;;; the version the scheme implementation loading this file.
-
(define (scheme-implementation-version) "?01nov91")
(define (implementation-vicinity)
@@ -40,7 +37,6 @@
;;; (library-vicinity) should be defined to be the pathname of the
;;; directory where files of Scheme library functions reside.
-
(define library-vicinity
(let ((library-path
(case (software-type)
@@ -53,15 +49,19 @@
;;; (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
- (let ((home-path (getenv "HOME")))
- (lambda () home-path)))
+(define (home-vicinity)
+ (let ((home (getenv "HOME")))
+ (and home
+ (case (software-type)
+ ((UNIX COHERENT MS-DOS) ;V7 unix has a / on HOME
+ (if (eqv? #\/ (string-ref home (+ -1 (string-length home))))
+ home
+ (string-append home "/")))
+ (else home)))))
;;; *FEATURES* should be set to a list of symbols describing features
;;; of this implementation. See Template.scm for the list of feature
;;; names.
-
(define *features*
'(
source ;can load scheme source files
@@ -71,7 +71,7 @@
;; Scheme report features
-; rev5-report ;conforms to
+; r5rs ;conforms to
; eval ;R5RS two-argument eval
; values ;R5RS multiple values
; dynamic-wind ;R5RS dynamic-wind
@@ -85,14 +85,14 @@
;STRING-FILL!, LIST->VECTOR,
;VECTOR->LIST, and VECTOR-FILL!
- rev4-report ;conforms to
+ r4rs ;conforms to
;; Follows rev4 as far as I can tell, modulo '() being false,
;; number syntax (see doc), incomplete tail recursion (see
;; docs) and a couple of bugs in some versions -- see below.
; ieee-p1178 ;conforms to
- rev3-report ;conforms to
+ r3rs ;conforms to
; rev2-procedures ;SUBSTRING-MOVE-LEFT!,
;SUBSTRING-MOVE-RIGHT!,
@@ -103,7 +103,7 @@
multiarg/and- ;/ and - can take more than 2 args.
with-file ;has WITH-INPUT-FROM-FILE and
- ;WITH-OUTPUT-FROM-FILE
+ ;WITH-OUTPUT-TO-FILE
transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF
ieee-floating-point ;conforms to IEEE Standard 754-1985
;IEEE Standard for Binary
@@ -184,6 +184,37 @@
(close-input-port insp)
res))
+(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 end) (zero? (system (string-append cmd url end))))
+ (or (try "netscape-remote -remote 'openURL(" ")'")
+ (try "netscape -remote 'openURL(" ")'")
+ (try "netscape '" "'&")
+ (try "netscape '" "'")))
+
;;; "rationalize" adjunct procedures.
(define (find-ratio x e)
(let ((rat (rationalize x e)))
@@ -254,7 +285,7 @@
(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)
@@ -271,7 +302,6 @@
(define slib:form-feed (integer->char 12))
;;; bug fixes for Scheme->C (versions 28sep90, 23feb90, 01nov91):
-
(let ((vers (substring (cadr (implementation-information)) 0 7)))
(if (or (string=? vers "28sep90") (string=? vers "23feb90")
(string=? vers "01nov91"))
@@ -299,12 +329,11 @@
;; DEFINE as shown by test.scm -- not fixed here.
)))
-(define promise:force force)
+;;(define force force)
;;; (implementation-vicinity) should be defined to be the pathname of
;;; the directory where any auxillary files to your Scheme
;;; implementation reside.
-
(define in-vicinity string-append)
;;; Define SLIB:EXIT to be the implementation procedure to exit or
@@ -320,17 +349,14 @@
;;; (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 f) (load (string-append f (scheme-file-suffix))))
;;; (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:load (in-vicinity (library-vicinity) "require"))