/usr/share/elk/slib.scm is in elk 3.99.8-2.1ubuntu2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 | ;;;"elk.init" Initialisation file for SLIB for ELK 2.1 -*- Scheme -*-
;;; 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.
; No guarantees are given about the correctness of any of the
; choices made below. Only enough work was done to get the require
; mechanism to work correctly.
;
; Stephen J. Bevan <bevan@cs.man.ac.uk> 19920912 modified by Mike
; Sperber to work correctly with statically-linked Elk and slib1d. Be
; sure to change the library vicinities according to your local
; configuration. If you're running MS-DOS (which is possible since
; 2.1), you probably have to change this file to make everything work
; correctly.
;;; (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) 'elk)
;;; (scheme-implementation-version) should return a string describing
;;; the version the scheme implementation loading this file.
(define (scheme-implementation-version) "3.99.8")
;;; (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/share/elk")
;;; (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")
; ;; Uses this path if SCHEME_LIBRARY_PATH is not defined.
; (case (software-type)
; ((UNIX) "/usr/local/lib/slib/")
; ((VMS) "lib$scheme:")
; ((MS-DOS) "C:\\SLIB\\")
; (else "")))))
; (lambda () library-path)))
(define (library-vicinity) "/usr/lib/slib/")
;;; *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
ieee-p1178
sicp
rev4-optional-procedures
rev3-procedures
rev2-procedures
multiarg/and-
multiarg-apply
delay
transcript
full-continuation
; sort
format
system
; getenv <------- does elk 3.0 really have getenv? couldn't find it
program-arguments
string-port
))
;------------
(define program-arguments
(lambda ()
(cons "undefined-program-name" (command-line-args))))
; EXACT? appears to always return #f which isn't very useful.
; Approximating it with INTEGER? at least means that some
; of the code in the library will work correctly
(define exact? integer?) ; WARNING: redefining EXACT?
(define (inexact? arg)
(not (exact? arg)))
;;; (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)))))
(require 'unix)
; Pull in GENTENV and SYSTEM
;;; (FILE-EXISTS? <string>) already here.
;;; (DELETE-FILE <string>)
(define (delete-file f) (system (string-append "rm " f)))
;------------
;;; (OUTPUT-PORT-WIDTH <port>)
(define (output-port-width . arg) 79)
;;; (OUTPUT-PORT-HEIGHT <port>)
(define (output-port-height . arg) 24)
;;; (CURRENT-ERROR-PORT)
;;; is already defined in Elk 2.1
;;; 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 flush-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 f)
(let ((outsp (open-output-string)))
(f outsp)
(let ((s (get-output-string outsp)))
(close-output-port outsp)
s)))
(define (call-with-input-string s f)
(let* ((insp (open-input-string s))
(res (f insp)))
(close-input-port insp)
res))
;;; 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 8388608) ; 23 bit integers ?
;;; 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)
(define *macros* '())
(define (defmacro? m) (and (assq m *macros*) #t))
(define-macro (defmacro key pattern . body)
`(begin
(define-macro ,(cons key pattern) ,@body)
(set! *macros* (cons (cons ',key (lambda ,pattern ,@body)) *macros*))))
(define (macroexpand-1 e)
(if (pair? e) (let ((a (car e)))
(cond ((symbol? a) (set! a (assq a *macros*))
(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 *macros*))
(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 defmacro:eval slib:eval)
(define defmacro:load load)
;;; If your implementation provides R4RS macros:
;(define macro:eval slib:eval)
;(define macro:load load)
(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 #\formfeed)
;;; 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
(exit (cond ((null? args) 0)
((eqv? #t (car args)) 0)
((and (number? (car args)) (integer? (car args))) (car args))
(else 1)))))
;;; 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.
; Modify the already modified _load_ so that it copes with
; environments correctly. The change involves using
; _(global-environment)_ if none is explicitly specified.
; If this is not done, definitions in files loaded by other files will
; not be loaded in the correct environment.
(define slib:load-source
(let ((primitive-load load))
(lambda (<pathname> . rest)
(let ((env (if (null? rest) (list (global-environment)) rest)))
(apply primitive-load (string-append <pathname> ".scm") env)))))
;;; (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
(let ((primitive-load load))
(lambda (<pathname> . rest)
(apply primitive-load (string->symbol (string-append name ".o")) rest))))
;;; At this point SLIB:LOAD must be able to load SLIB files.
(define slib:load slib:load-source) ;WARNING: redefining LOAD
(slib:load (in-vicinity (library-vicinity) "require"))
|