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+;"scsh.init" Initialisation for SLIB for Scsh 0.5.1 -*-scheme-*-
+
+;;; (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) 'Scsh)
+
+;;; (scheme-implementation-version) should return a string describing
+;;; the version the scheme implementation loading this file.
+
+(define (scheme-implementation-version) "0.5.1")
+
+;;; (implementation-vicinity) should be defined to be the pathname of
+;;; the directory where any auxillary files to your Scheme
+;;; implementation reside.
+
+(define (implementation-vicinity)
+ "/home/tomas/src/scsh-0.5.1/")
+
+;;; (library-vicinity) should be defined to be the pathname of the
+;;; directory where files of Scheme library functions reside.
+
+(define (library-vicinity)
+ "/home/tomas/src/slib2b1/")
+
+;;; (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)))
+
+;;; *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 ;SLIB:EVAL is single 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
+ ))
+
+;;; (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 error-output-port)
+
+;;; (TMPNAM) makes a temporary file name.
+(define (tmpnam)
+ (create-temp-file "slib_"))
+
+;;; (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 #x0FFFFFFF)
+
+;;; Return argument
+(define (identity x) x)
+
+;;; If your implementation provides eval SLIB:EVAL is single argument
+;;; eval using the top-level (user) environment.
+;(define slib:eval eval)
+
+
+; [s48 has two argument eval]
+(define (slib:eval form)
+ (eval form (interaction-environment)))
+
+;;; 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 (defmacro:load pathname)
+ (slib:eval-load pathname defmacro:eval))
+
+(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 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 (ascii->char 9))
+(define slib:form-feed (ascii->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 append! append)
+
+;;; 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 (lambda args #f))
+
+;;; 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)
+
+;;; Scheme48 complains that these are not defined (even though they
+;;; won't be called until they are).
+(define synclo:load #f)
+(define syncase:load #f)
+(define macwork:load #f)
+(define transcript-on #f)
+(define transcript-off #f)
+
+(define array? #f)
+(define record? #f)
+(define sort! #f)
+
+(slib:load (in-vicinity (library-vicinity) "require"))