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- ;"t3.init" Initialization file for SLIB for T3.1. -*-scheme-*-
- ;Copyright (C) 1991, 1992 David Carlton & Stephen Bevan
- ;Copyright 1993 F. Javier Thayer.
- ;Copyright (C) 1991, 1992, 1993 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.
-
- ;;; File has T syntax, and should be compiled in standard-env.
- ;;; Compiled file has .so suffix.
- ;;; File (or compiled version) should be loaded into scheme-env.
-
- ;;; This is provided with ABSOLUTELY NO GUARANTEE.
- (herald t3)
-
- (define (software-type) 'UNIX)
-
- (define (scheme-implementation-type) 'T)
-
- (define (scheme-implementation-version) "3.1")
-
- ;;; (implementation-vicinity) should be defined to be the pathname of
- ;;; the directory where any auxillary files to your Scheme
- ;;; implementation reside. It is settable.
-
- (define implementation-vicinity
- (make-simple-switch 'implementation-vicinity
- (lambda (x) (or (string? x) (false? x)))
- '#f))
- (set (implementation-vicinity) "/usr/local/lib/tsystem/")
-
- ;;; (library-vicinity) should be defined to be the pathname of the
- ;;; directory where files of Scheme library functions reside. It is settable.
-
- (define library-vicinity
- (make-simple-switch 'library-vicinity
- (lambda (x) (or (string? x) (false? x)))
- '#f))
- (set (library-vicinity) "/usr/local/lib/slib/")
- ;;Obviously put your value here.
-
- ;;; *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
- ;(slib:load-source "filename")
- compiled ;can load compiled files
- ;(slib:load-compiled "filename")
- rev3-report
- rev4-optional-procedures
- rev3-procedures
- rev2-procedures
- multiarg/and-
- multiarg-apply
- rationalize
- object-hash
- delay
- i/o-redirection
- char-ready?
- with-file
- transcript
- full-continuation
- pretty-print
- format
- trace ;has macros: TRACE and UNTRACE
- program-arguments
- ))
-
- (define substring
- (let ((primitive-substring (*value standard-env 'substring)))
- (lambda (string start end)
- (primitive-substring string start (max 0 (- end 1))))))
-
- ; Modify substring as T's substring takes (start,count) instead of
- ; (start,end)
-
- (set (syntax-table-entry (env-syntax-table scheme-env) 'require) '#f)
-
- ; Turn off the macro REQUIRE so that it can be rebound as a function
- ; later.
-
- ; extend <, >, <= and >= so that they take more than two arguments.
-
- (define <
- (let ((primitive< (*value standard-env '<)))
- (labels ((v (lambda (a b . rest)
- (if (null? rest)
- (primitive< a b)
- (and (primitive< a b)
- (apply v b (car rest) (cdr rest)))))))
- v)))
-
- (define >
- (let ((primitive> (*value standard-env '>)))
- (labels ((v (lambda (a b . rest)
- (if (null? rest)
- (primitive> a b)
- (and (primitive> a b)
- (apply v b (car rest) (cdr rest)))))))
- v)))
-
- (define <=
- (let ((primitive<= (*value standard-env '<=)))
- (labels ((v (lambda (a b . rest)
- (if (null? rest)
- (primitive<= a b)
- (and (primitive<= a b)
- (apply v b (car rest) (cdr rest)))))))
- v)))
-
- (define >=
- (let ((primitive>= (*value standard-env '>=)))
- (labels ((v (lambda (a b . rest)
- (if (null? rest)
- (primitive>= a b)
- (and (primitive>= a b)
- (apply v b (car rest) (cdr rest)))))))
- v)))
-
- (define =
- (let ((primitive= (*value standard-env '=)))
- (labels ((v (lambda (a b . rest)
- (if (null? rest)
- (primitive= a b)
- (and (primitive= a b)
- (apply v b (car rest) (cdr rest)))))))
- v)))
-
- (define gcd
- (let ((prim (*value standard-env 'gcd)))
- (labels ((v (lambda x
- (cond ((null? x) 0)
- ((= (length x) 1) (car x))
- ('#t (prim (car x) (apply v (cdr x))))))))
- v)))
-
- (define list? (*value standard-env 'proper-list?))
-
- (define program-arguments command-line)
-
- ;;; (OUTPUT-PORT-WIDTH <port>)
- (define output-port-width
- (lambda x
- (if (null? x) (line-length (standard-input))
- (line-length (car x)))))
-
- ;;; (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))
- (let ((tmp (string-append "slib_" (number->string cntr))))
- (if (file-exists? tmp) (tmpnam) tmp)))))
-
- (define delete-file file-delete)
-
- ;;; 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
- ;;; T already has it.
-
- ;;; 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 form) (eval form scheme-env))
-
- ;;; 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 an error procedure for the library
- (define slib:error error)
-
- ;;; define these as appropriate for your system.
- (define slib:tab #\tab)
- (define slib:form-feed #\form)
-
- ;;; 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+ n) (+ n -1))
-
- (define program-vicinity
- (make-simple-switch 'program-vicinity
- (lambda (x) (or (string? x) (false? x)))
- '#f))
-
- (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 (exit))
-
- (define (string . args) (apply string-append (map char->string args)))
-
- (define make-string
- (let ((t:make-string (*value standard-env 'make-string)))
- (lambda (a . b)
- (let ((str (t:make-string a)))
- (if b (map-string! (lambda (x) (ignore x) (car b)) str) str)))))
-
- (define (string>? a b)
- (labels ((aux
- (lambda (n a b)
- ;;start off with n<=(string-length b) and n<=(string-length a)
- ;;a,b coincide for chars <n
- (cond ((= (string-length a) n) (< n (string-length b)))
- ;;now (< n (string-length a))
- ((= (string-length b) n) '#f)
- ;;now (< n (string-length a))
- ((char=? (nthchar a n) (nthchar b n) ) (aux (+ 1 n) a b))
- ('#t (char<? (nthchar b n) (nthchar a n)))))))
- (aux 0 a b)))
-
- (define (string<? a b) (string>? b a))
- (define (string<=? a b) (not (string>? a b)))
- (define (string>=? a b) (not (string<? a b)))
-
- (define (string-ci<? a b)
- (string<? (string-upcase a) (string-upcase b)))
-
- (define (string-ci>? a b)
- (string>? (string-upcase a) (string-upcase b)))
-
- (define (string-ci<=? a b)
- (string<=? (string-upcase a) (string-upcase b)))
-
- (define (string-ci>=? a b)
- (string>=? (string-upcase a) (string-upcase b)))
-
- ;;; FORCE-OUTPUT flushes any pending output on optional arg output port
- ;;; use this definition if your system doesn't have such a procedure.
- ;;; T already has it, but requires 1 argument.
-
- (define force-output
- (let ((t:force-output (*value standard-env 'force-output)))
- (lambda x
- (if x
- (t:force-output (car x))
- (t:force-output (current-output-port))))))
-
- ;;; CALL-WITH-INPUT-STRING and CALL-WITH-OUTPUT-STRING are the string
- ;;; port versions of CALL-WITH-*PUT-FILE.
- (define (call-with-output-string proc)
- (with-output-to-string var (proc var)))
-
- (define (call-with-input-string string proc)
- (with-input-from-string (variable string) (proc variable)))
-
- (define (string->number s . x)
- (let ((base (if x (car x) 10))
- (s (string-upcase s)))
- (or (mem? = base '(8 10 16))
- (error (format (current-error-port) "Bad radix ~A" base)))
- (if (= (string-length s) 0) '()
- (let ((char->number
- (lambda (ch)
- (cdr (ass char=? ch
- '((#\0 . 0)
- (#\1 . 1) (#\2 . 2) (#\3 . 3) (#\4 . 4)
- (#\5 . 5) (#\6 . 6) (#\7 . 7) (#\8 . 8)
- (#\9 . 9) (#\A . 10) (#\B . 11) (#\C . 12)
- (#\D . 13) (#\E . 14) (#\F . 15)))))))
- (catch not-num
- (iterate loop ((pos (- (string-length s) 1))
- (power 1) (accum 0))
- (if (< pos 0) accum
- (let ((num (char->number (string-ref s pos))))
- (or num (not-num '()))
- (or (< num base) (not-num '()))
- (loop (- pos 1)
- (* power base)
- (+ accum (* num power)))))))))))
-
- (define (number->string n . x)
- (let ((rad (if (car x) (car x) 10)))
- (format nil
- (case rad
- ((8) "~O")
- ((10) "~D")
- ((16) "~X")
- (else (error (format (current-error-port)
- "Bad radix ~A" (car x)))))
- n)))
-
- (define (inexact? f)
- (float? f))
-
- (define (exact? f)
- (not (inexact? f)))
-
- (define exact->inexact ->float)
-
- (define peek-char
- (let ((t:peek-char (*value standard-env 'peek-char)))
- (lambda p
- (let ((port (if p (car p) (current-input-port))))
- (t:peek-char port)))))
-
- ;;;(set ((*value scheme-env 'standard-early-binding-env) 'load) '#f)
- ;;;(set ((*value scheme-env 'standard-early-binding-env) 'substring) '#f)
- (set ((*value scheme-env 'standard-early-binding-env) 'less?) '#f)
- (set ((*value scheme-env 'standard-early-binding-env) 'greater?) '#f)
- (set ((*value scheme-env 'standard-early-binding-env) 'not-less?) '#f)
- (set ((*value scheme-env 'standard-early-binding-env) 'not-greater?) '#f)
- (set ((*value scheme-env 'standard-early-binding-env) 'number-equal?) '#f)
- (set ((*value scheme-internal-env 'standard-early-binding-env) 'list?) '#f)
-
- (set ((*value t-implementation-env 'SOURCE-FILE-EXTENSION)) 'scm)
-
- ;;; Here for backward compatability
- (define (scheme-file-suffix) "")
-
- (define load
- (let ((t:load (*value standard-env 'load)))
- (lambda (filespec . x)
- (apply t:load (->filename filespec) x))))
-
- ;;; (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:load (in-vicinity (library-vicinity) "require") scheme-env)
-
- ;;;(define scheme-read-table
- ;;; (make-read-table standard-read-table 'modified-read-table))
- ;;;
- ;;;(set (read-table-entry scheme-read-table '#\#)
- ;;; (lambda (p ch rtable)
- ;;; (ignore ch) (ignore rtable)
- ;;; ((*value scheme-env 'string->number)
- ;;; (symbol->string (read-refusing-eof p)) 16)))
- ;;;
- ;;;(set (port-read-table (standard-input)) scheme-read-table)
-
- ; eof
-