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+;;;"STk.init" SLIB Initialization for STk -*-scheme-*-
+;;; Authors: Erick Gallesio (eg@unice.fr) and Aubrey Jaffer.
+;;;
+;;; This code is in the public domain.
+
+(require "unix")
+
+;;; (software-type) should be set to the generic operating system type.
+;;; UNIX, VMS, MACOS, AMIGA and MSDOS are supported.
+
+(define (software-type) 'UNIX)
+
+;;; (scheme-implementation-type) should return the name of the scheme
+;;; implementation loading this file.
+
+(define (scheme-implementation-type) '|STk|)
+
+;;; (scheme-implementation-home-page) should return a (string) URL
+;;; (Uniform Resource Locator) for this scheme implementation's home
+;;; page; or false if there isn't one.
+
+(define (scheme-implementation-home-page)
+ "http://kaolin.unice.fr/STk/STk.html")
+
+;;; (scheme-implementation-version) should return a string describing
+;;; the version the scheme implementation loading this file.
+
+(define (scheme-implementation-version) (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) "/usr/local/lib/stk/3.99.3/")
+
+;;; (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 (getenv "SCHEME_LIBRARY_PATH") "/usr/local/lib/slib/")))
+ (lambda () library-path)))
+
+;;;
+;;;
+(define home-vicinity
+ (let ((home-path (or (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!
+; rev3-procedures ;LAST-PAIR, T, and NIL
+; 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 ; commented because icomplete
+; queue ;queues
+; pretty-print
+; object->string
+; format
+; 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
+ ))
+
+;;; (OUTPUT-PORT-WIDTH <port>)
+(define (output-port-width . arg) 79)
+
+;;; (OUTPUT-PORT-HEIGHT <port>)
+(define (output-port-height . arg) 24)
+
+;;; (TMPNAM) makes a temporary file name.
+(define tmpnam (let ((cntr 100))
+ (lambda () (set! cntr (+ 1 cntr))
+ (string-append "slib_" (number->string cntr)))))
+
+;;; (DELETE-FILE <string>)
+(define (delete-file f) (system (format #f "/bin/rm ~A" 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) (apply flush arg))
+
+;;; 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)
+
+;;; If your implementation provides eval 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 *macros* '())
+
+(define-macro (defmacro name args . body)
+ `(begin
+ (define-macro (,name ,@args) ,@body)
+ (set! *macros* (cons ,name *macros*))))
+
+
+(define (defmacro? m) (and (memv m *macros*) #t))
+
+(define macroexpand-1 MACRO-EXPAND-1)
+(define macroexpand MACRO-EXPAND)
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(define gentemp GENSYM)
+(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 an error procedure for the library
+(define (slib:error . args)
+ (error (apply string-append (map (lambda (x) (format #f " ~a" x)) args))))
+
+
+;;; define these as appropriate for your system.
+(define slib:tab (integer->char 9))
+(define slib:form-feed (integer->char 12))
+
+;;; Define these if your implementation's syntax can support it and if
+;;; they are not already defined.
+(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 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)
+
+;;;
+;;; Retain original require/provide before loading "require.scm"
+;;;
+(define stk:require require)
+(define stk:provide provide)
+(define stk:provided? provided?)
+
+(define slib:load slib:load-source)
+(slib:load (in-vicinity (library-vicinity) "require"))
+
+
+;;;
+;;; Redefine require/provide so that symbols use SLIB one and strings use STk one
+;;;
+
+(define require
+ (let ((slib:require require))
+ (lambda (item)
+ ((if (symbol? item) slib:require stk:require) item ))))
+
+(define provide
+ (let ((slib:provide provide))
+ (lambda (item)
+ ((if (symbol? item) slib:provide stk:provide) item))))
+
+(define provided?
+ (let ((slib:provided? provided?))
+ (lambda (item)
+ ((if (symbol? item) slib:provided? stk:provided?) item))))
+
+(define identity (lambda (x) x))