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Re:SLIB support


I made some simple modifications to the features list into Per's init
file; I'm not a scheme hacker, anyway my first impression is that a lot
of code is devoted to improve load capabilities: maybe some code about
vicinity and compiled files loading can conflict against java classpath
search.
This code is placed in both the init file and require.scm.
I downloaded the latest versions of jacal and slib from
ftp://ftp.cs.indiana.edu/pub/scheme-repository/incoming; loading
math.scm yelds a lots of errors : the first is 

java.lang.RuntimeException: load: file not found:
gnu.mapping.Values@ef72029bscl.scm

I tried to do some debugging turning on tracing over 'load' and
'slib:load' procedures, but whitout any result: it seems that this
exception is thrown reading files that don't have any call to 'values'.
I've not been able to reproduce this error by inserting a lot of code by
hand from the files (the whole package is rather big, so I stopped after
a while).

This is the modified init I used:


;"Template.scm" configuration template of *features* for Scheme
-*-scheme-*-
; Copyright (C) 1991, 1992, 1993, 1994, 1997 Aubrey Jaffer.
;
;Permission to copy this software, to redistribute it, and to use it
;for any purpose is granted, subject to the following restrictions and
;understandings.
;
;1.  Any copy made of this software must include this copyright notice
;in full.
;
;2.  I have made no warrantee or representation that the operation of
;this software will be error-free, and I am under no obligation to
;provide any services, by way of maintenance, update, or otherwise.
;
;3.  In conjunction with products arising from the use of this
;material, there shall be no use of my name in any advertising,
;promotional, or sales literature without prior written consent in
;each case.

;;; (software-type) should be set to the generic operating system type.
;;; UNIX, VMS, MACOS, AMIGA and MS-DOS are supported.

(define (software-type) 'UNIX)

;;; (scheme-implementation-type) should return the name of the scheme
;;; implementation loading this file.

(define (scheme-implementation-type) 'Kawa)

;;; (scheme-implementation-version) should return a string describing
;;; the version the scheme implementation loading this file.

;;(define (scheme-implementation-version) "?")

;;; (implementation-vicinity) should be defined to be the pathname of
;;; the directory where any auxillary files to your Scheme
;;; implementation reside.

(define (implementation-vicinity)
"/web1/vezzoli/programmi/kawa-1.6.60/")
;  (case (software-type)
;    ((UNIX)     "/usr/local/src/scheme/")
;    ((VMS)     "scheme$src:")
;    ((MS-DOS)  "C:\\scheme\\")))

;;; (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
         (or
          "/web1/vezzoli/programmi/scheme_test/slib/"
          ;; Use this getenv if your implementation supports it.
          ;(getenv "SCHEME_LIBRARY_PATH")
          ;; Use this path if your scheme does not support GETENV
          ;; or if SCHEME_LIBRARY_PATH is not set.
          (case (software-type)
            ((UNIX) "/usr/local/lib/slib/")
            ((VMS) "lib$scheme:")
            ((MS-DOS) "C:\\SLIB\\")
            (else "")))))
    (lambda () library-path)))

;;; (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)
  (symbol->string
   ((primitive-static-method <java.lang.System> "getProperty"
                             <String> (<String>))
    'user.home)))

;;; *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
        ieee-p1178                      ;conforms to
;       sicp                            ;runs code from Structure and
                                        ;Interpretation of Computer
                                        ;Programs by Abelson and
Sussman.
        rev4-optional-procedures        ;LIST-TAIL, STRING->LIST,
                                        ;LIST->STRING, STRING-COPY,
                                        ;STRING-FILL!, LIST->VECTOR,
                                        ;VECTOR->LIST, and VECTOR-FILL!
;       rev2-procedures                 ;SUBSTRING-MOVE-LEFT!,
                                        ;SUBSTRING-MOVE-RIGHT!,
                                        ;SUBSTRING-FILL!,
                                        ;STRING-NULL?, APPEND!, 1+,
                                        ;-1+, <?, <=?, =?, >?, >=?
        multiarg/and-                   ;/ and - can take more than 2
args.
        multiarg-apply                  ;APPLY can take more than 2
args.
        rationalize
        delay                           ;has DELAY and FORCE
        with-file                       ;has WITH-INPUT-FROM-FILE and
                                        ;WITH-OUTPUT-FROM-FILE
        string-port                     ;has CALL-WITH-INPUT-STRING and
                                        ;CALL-WITH-OUTPUT-STRING
        transcript                      ;TRANSCRIPT-ON and
TRANSCRIPT-OFF
        char-ready?
        macro                           ;has R4RS high level macros
        defmacro                        ;has Common Lisp DEFMACRO
        eval                            ;R5RS two-argument eval
        record                          ;has user defined data
structures
        values                          ;proposed multiple values
        dynamic-wind                    ;proposed dynamic-wind
;       ieee-floating-point             ;conforms to
;       full-continuation               ;can return multiple times
;       object-hash                     ;has OBJECT-HASH

;       sort
;       queue                           ;queues
;       pretty-print
;       object->string
        format
        trace                           ;has macros: TRACE and UNTRACE
;       compiler                        ;has (COMPILER)
;       ed                              ;(ED) is editor
        system                          ;posix (system <string>)
;       getenv                          ;posix (getenv <string>)
;       program-arguments               ;returns list of strings (argv)
;       Xwindows                        ;X support
;       curses                          ;screen management package
;       termcap                         ;terminal description package
;       terminfo                        ;sysV terminal description
;       current-time                    ;returns time in seconds since
1/1/1970
	fluid-let			;has fluid-let syntax
        ))

;;; (OUTPUT-PORT-WIDTH <port>)
(define (output-port-width . arg) 79)

;;; (OUTPUT-PORT-HEIGHT <port>)
(define (output-port-height . arg) 24)

;;; (CURRENT-ERROR-PORT)
(define current-error-port
  (let ((port (current-output-port)))
    (lambda () port)))

;;; (TMPNAM) makes a temporary file name.
(define tmpnam (let ((cntr 100))
                 (lambda () (set! cntr (+ 1 cntr))
                         (string-append "slib_" (number->string
cntr)))))

;;; (FILE-EXISTS? <string>)
;(define (file-exists? f) #f)

;;; (DELETE-FILE <string>)
;(define (delete-file f) #f)

;;; FORCE-OUTPUT flushes any pending output on optional arg output port
;;; use this definition if your system doesn't have such a procedure.
;(define (force-output . arg) #t)

;;; CALL-WITH-INPUT-STRING and CALL-WITH-OUTPUT-STRING are the string
;;; port versions of CALL-WITH-*PUT-FILE.

;;; CHAR-CODE-LIMIT is one greater than the largest integer which can
;;; be returned by CHAR->INTEGER.
(define char-code-limit 256)

;;; MOST-POSITIVE-FIXNUM is used in modular.scm
(define most-positive-fixnum #xFFFFFFFF)

;;; Return argument
(define (identity x) x)

;;; SLIB:EVAL is single argument eval using the top-level (user)
environment.
(define slib:eval eval)

;;; If your implementation provides R4RS macros:
;(define macro:eval slib:eval)
;(define macro:load load)

(define *defmacros*
  (list (cons 'defmacro
              (lambda (name parms . body)
                `(set! *defmacros* (cons (cons ',name (lambda ,parms
,@body))
                                         *defmacros*))))))
(define (defmacro? m) (and (assq m *defmacros*) #t))

(define (macroexpand-1 e)
  (if (pair? e) (let ((a (car e)))
                  (cond ((symbol? a) (set! a (assq a *defmacros*))
                                     (if a (apply (cdr a) (cdr e)) e))
                        (else e)))
      e))

(define (macroexpand e)
  (if (pair? e) (let ((a (car e)))
                  (cond ((symbol? a)
                         (set! a (assq a *defmacros*))
                         (if a (macroexpand (apply (cdr a) (cdr e))) e))
                        (else e)))
      e))

;(define gentemp
;  (let ((*gensym-counter* -1))
;    (lambda ()
;      (set! *gensym-counter* (+ *gensym-counter* 1))
;      (string->symbol
;       (string-append "slib:G" (number->string *gensym-counter*))))))

(define base:eval slib:eval)
(define (defmacro:eval x) (base:eval (defmacro:expand* x)))
(define (defmacro:expand* x)
  (require 'defmacroexpand) (apply defmacro:expand* x '()))

(define (slib:eval-load <pathname> evl)
  (if (not (file-exists? <pathname>))
      (set! <pathname> (string-append <pathname> (scheme-file-suffix))))
  (call-with-input-file <pathname>
    (lambda (port)
      (let ((old-load-pathname *load-pathname*))
        (set! *load-pathname* <pathname>)
        (do ((o (read port) (read port)))
            ((eof-object? o))
          (evl o))
        (set! *load-pathname* old-load-pathname)))))

(define (defmacro:load <pathname>)
  (slib:eval-load <pathname> defmacro:eval))

(define slib:warn
  (lambda args
    (let ((port (current-error-port)))
      (display "Warn: " port)
      (for-each (lambda (x) (display x port)) args))))

;;; define an error procedure for the library
(define slib:error error)

;;; define these as appropriate for your system.
(define slib:tab (integer->char 9))
(define slib:form-feed (integer->char 12))

;;; Support for older versions of Scheme.  Not enough code for its own
file.
(define (last-pair l) (if (pair? (cdr l)) (last-pair (cdr l)) l))
(define t #t)
(define nil #f)

;;; 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+)

(define in-vicinity string-append)

;;; Define SLIB:EXIT to be the implementation procedure to exit or
;;; return if exitting not supported.
(define slib:exit exit)

;;; Here for backward compatability
(define scheme-file-suffix
  (let ((suffix (case (software-type)
                  ((NOSVE) "_scm")
                  (else ".scm"))))
    (lambda () suffix)))

;;; (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 ".scm")))

;;; (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"))


_____________________________________EOF______________________________

-- 
	(--cafe babe--) 
Marco Vezzoli	marco.vezzoli@st.com
CR&D Intranet Developement   STMicroelectronics
tel. +39 039 603 6852 fax. +39 039 603 5055

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