diff options
Diffstat (limited to 'gambit.init')
| -rw-r--r-- | gambit.init | 300 |
1 files changed, 192 insertions, 108 deletions
diff --git a/gambit.init b/gambit.init index 2e8a10d..d50edae 100644 --- a/gambit.init +++ b/gambit.init @@ -3,14 +3,16 @@ ;;; ;;; This code is in the public domain. -;;; Ignore case when reading symbols (per R5RS). -(set-case-conversion! #t) - ;;; Updated 1992 February 1 for Gambit v1.71 -- by Ken Dickey ;;; Date: Wed, 12 Jan 1994 15:03:12 -0500 ;;; From: barnett@armadillo.urich.edu (Lewis Barnett) ;;; Relative pathnames for Slib in MacGambit ;;; Hacked yet again for Gambit v2.4, Jan 1997, by Mike Pope +;;; Updated for Gambit v3.0, 2001-01 AGJ. + +;;; gsi should be invoked with -:s option to Ignore case when reading +;;; symbols (per R5RS). + (define (software-type) 'MACOS) ; for MacGambit. (define (software-type) 'UNIX) ; for Unix platforms. @@ -22,13 +24,11 @@ (define (scheme-implementation-home-page) "http://www.iro.umontreal.ca/~gambit/index.html") -(define (scheme-implementation-version) "3.0") -;;; Jefferson R. Lowrey reports that in Gambit Version 3.0 -;;; (argv) returns '(""). -(define argv - (if (equal? '("") (argv)) ;Fix only if it is broken. - (lambda () '("Lowrey HD:Development:MacGambit 3.0:Interpreter")) - argv)) +(define (scheme-implementation-version) (system-version-string)) + +(define getenv + (let ((ge getenv)) + (lambda (str) (ge str #f)))) ;;; (implementation-vicinity) should be defined to be the pathname of ;;; the directory where any auxillary files to your Scheme @@ -55,85 +55,196 @@ ;;; called slib in the same directory as the MacGambit Interpreter. (define library-vicinity (let ((library-path - (case (software-type) - ((UNIX) "/usr/local/lib/slib/") - ((MACOS) (string-append (implementation-vicinity) "slib:")) - ((AMIGA) "dh0:scm/Library/") - ((VMS) "lib$scheme:") - ((WINDOWS MS-DOS) "C:\\SLIB\\") - (else "")))) + (or + ;; Use this getenv if your implementation supports it. + (getenv "SCHEME_LIBRARY_PATH") + ;; Use this path if your scheme does not support GETENV + ;; or if SCHEME_LIBRARY_PATH is not set. + (case (software-type) + ((UNIX) "/usr/local/lib/slib/") + ((MACOS) (string-append (implementation-vicinity) "slib:")) + ((AMIGA) "dh0:scm/Library/") + ((VMS) "lib$scheme:") + ((WINDOWS 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 +(define (home-vicinity) + (let ((home (getenv "HOME"))) + (if home + (case (software-type) + ((UNIX COHERENT MS-DOS) ;V7 unix has a / on HOME + (if (eqv? #\/ (string-ref home (+ -1 (string-length home)))) + home + (string-append home "/"))) + (else home)) + (case (software-type) + ((VMS) "~:") + ((WINDOWS) "~/") + ((MACOS) "~:") + (else #f))))) +;@ +(define in-vicinity string-append) +;@ +(define (user-vicinity) (case (software-type) - ((UNIX) (lambda () "~/")) - ((VMS) (lambda () "~:")) - ((MS-DOS) (lambda () "~\\")) - ((WINDOWS) (lambda () "~/")) - ((MACOS) (lambda () "~:")))) - -;;; *FEATURES* should be set to a list of symbols describing features -;;; of this implementation. Suggestions for features are: + ((VMS) "[.]") + (else ""))) + +(define *load-pathname* #f) +;@ +(define vicinity:suffix? + (let ((suffi + (case (software-type) + ((AMIGA) '(#\: #\/)) + ((MACOS THINKC) '(#\:)) + ((MS-DOS WINDOWS ATARIST OS/2) '(#\\ #\/)) + ((NOSVE) '(#\: #\.)) + ((UNIX COHERENT PLAN9) '(#\/)) + ((VMS) '(#\: #\])) + (else + (slib:warn "require.scm" 'unknown 'software-type (software-type)) + "/")))) + (lambda (chr) (and (memv chr suffi) #t)))) +;@ +(define (pathname->vicinity pathname) + (let loop ((i (- (string-length pathname) 1))) + (cond ((negative? i) "") + ((vicinity:suffix? (string-ref pathname i)) + (substring pathname 0 (+ i 1))) + (else (loop (- i 1)))))) +(define (program-vicinity) + (if *load-pathname* + (pathname->vicinity *load-pathname*) + (slib:error 'program-vicinity " called; use slib:load to load"))) +;@ +(define sub-vicinity + (case (software-type) + ((VMS) (lambda + (vic name) + (let ((l (string-length vic))) + (if (or (zero? (string-length vic)) + (not (char=? #\] (string-ref vic (- l 1))))) + (string-append vic "[" name "]") + (string-append (substring vic 0 (- l 1)) + "." name "]"))))) + (else (let ((*vicinity-suffix* + (case (software-type) + ((NOSVE) ".") + ((MACOS THINKC) ":") + ((MS-DOS WINDOWS ATARIST OS/2) "\\") + ((UNIX COHERENT PLAN9 AMIGA) "/")))) + (lambda (vic name) + (string-append vic name *vicinity-suffix*)))))) +;@ +(define (make-vicinity <pathname>) <pathname>) +;@ +(define with-load-pathname + (let ((exchange + (lambda (new) + (let ((old *load-pathname*)) + (set! *load-pathname* new) + old)))) + (lambda (path thunk) + (let ((old #f)) + (dynamic-wind + (lambda () (set! old (exchange path))) + thunk + (lambda () (exchange old))))))) + +;;@ *FEATURES* is a list of symbols naming the (SLIB) features +;;; initially supported by this implementation. (define *features* '( source ;can load scheme source files - ;(slib:load-source "filename") + ;(SLIB:LOAD-SOURCE "filename") compiled ;can load compiled files - ;(slib:load-compiled "filename") + ;(SLIB:LOAD-COMPILED "filename") + vicinity + srfi-59 + + ;; Scheme report features + ;; R5RS-compliant implementations should provide all 9 features. + +;;; r5rs ;conforms to +;;; eval ;R5RS two-argument eval + values ;R5RS multiple values + dynamic-wind ;R5RS dynamic-wind +;;; macro ;R5RS high level macros + delay ;has DELAY and FORCE + multiarg-apply ;APPLY can take more than 2 args. + char-ready? + rev4-optional-procedures ;LIST-TAIL, STRING-COPY, + ;STRING-FILL!, and VECTOR-FILL! + + ;; These four features are optional in both R4RS and R5RS + + multiarg/and- ;/ and - can take more than 2 args. + rationalize + transcript ;TRANSCRIPT-ON and TRANSCRIPT-OFF + with-file ;has WITH-INPUT-FROM-FILE and + ;WITH-OUTPUT-TO-FILE + r4rs ;conforms to -; r3rs ;conforms to + ieee-p1178 ;conforms to -; srfi ;srfi-0, COND-EXPAND finds all srfi-* - 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!, + +;;; r3rs ;conforms to + +;;; 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-TO-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 -; record ;has user defined data structures -; values ;proposed multiple values -; dynamic-wind ;proposed dynamic-wind - ieee-floating-point ;conforms to +;;; object-hash ;has OBJECT-HASH + full-continuation ;can return multiple times -; object-hash ;has OBJECT-HASH + ieee-floating-point ;conforms to IEEE Standard 754-1985 + ;IEEE Standard for Binary + ;Floating-Point Arithmetic. -; sort + ;; Other common features + + srfi ;srfi-0, COND-EXPAND finds all srfi-* + sicp ;runs code from Structure and + ;Interpretation of Computer + ;Programs by Abelson and Sussman. + defmacro ;has Common Lisp DEFMACRO +;;; record ;has user defined data structures + structure ;DEFINE-STRUCTURE macro + string-port ;has CALL-WITH-INPUT-STRING and + ;CALL-WITH-OUTPUT-STRING +;;; sort pretty-print -; object->string -; format + object->string +;;; format trace ;has macros: TRACE and UNTRACE - break -; compiler ;has (COMPILER) -; ed ;(ED) is editor +;;; compiler ;has (COMPILER) +;;; ed ;(ED) is editor system ;posix (system <string>) -; getenv ;posix (getenv <string>) - program-arguments ;returns list of strings (argv) -; current-time ;returns time in seconds since 1/1/1970 - )) + getenv ;posix (getenv <string>) +;;; program-arguments ;returns list of strings (argv) + current-time ;returns time in seconds since 1/1/1970 + + ;; Implementation Specific features + + break + + )) + +(define object->limited-string object->string) + +(define (difftime caltime1 caltime0) + (- (time->seconds caltime1) + (if (number? caltime0) caltime0 (time->seconds caltime0)))) +(define (offset-time caltime offset) + (seconds->time (+ (time->seconds caltime) offset))) ;;; (OUTPUT-PORT-WIDTH <port>) -(define (output-port-width . arg) 79) +;; (define (output-port-width . arg) 79) ;;; (OUTPUT-PORT-HEIGHT <port>) (define (output-port-height . arg) 24) @@ -151,27 +262,22 @@ ;;; Gambit supports SYSTEM as an "Unstable Addition"; Watch for changes. (define system ##shell-command) -;;; (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 flush-output) - -;;; CALL-WITH-INPUT-STRING and CALL-WITH-OUTPUT-STRING are the string -;;; port versions of CALL-WITH-*PUT-FILE. +;;; CALL-WITH-INPUT-STRING is good as is. Gambit's +;;; CALL-WITH-OUTPUT-STRING lengthens the string first argument. +(define call-with-output-string + (let ((cwos call-with-output-string)) + (lambda (proc) (cwos "" proc)))) (define (make-exchanger obj) (lambda (rep) (let ((old obj)) (set! obj rep) old))) -(define (open-file filename modes) - (case modes - ((r rb) (open-input-file filename)) - ((w wb) (open-output-file filename)) - (else (slib:error 'open-file 'mode? modes)))) -(define (port? obj) (or (input-port? port) (output-port? port))) +(define open-file + (let ((open-both open-file)) + (lambda (filename modes) + (case modes + ((r rb) (open-input-file filename)) + ((w wb) (open-output-file filename)) + ((rw rwb) (open-both filename)) + (else (slib:error 'open-file 'mode? modes)))))) (define (call-with-open-ports . ports) (define proc (car ports)) (cond ((procedure? proc) (set! ports (cdr ports))) @@ -181,12 +287,6 @@ (let ((ans (apply proc ports))) (for-each close-port ports) ans)) -(define (close-port port) - (cond ((input-port? port) - (close-input-port port) - (if (output-port? port) (close-output-port port))) - ((output-port? port) (close-output-port port)) - (else (slib:error 'close-port 'port? port)))) (define (browse-url url) (define (try cmd) (eqv? 0 (system (sprintf #f cmd url)))) @@ -215,9 +315,6 @@ ;;; SLIB:EVAL is single argument eval using the top-level (user) environment. (define slib:eval eval) -; Define program-arguments as argv -(define program-arguments argv) - ;;; If your implementation provides R4RS macros: ;(define macro:eval slib:eval) ;(define macro:load load) @@ -256,18 +353,7 @@ (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))))) +;; slib:eval-load definition moved to "require.scm" (define print-call-stack identity) ;noop @@ -298,10 +384,8 @@ (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. +;;; return if exiting not supported. (define slib:exit (lambda args (exit))) ;;; Here for backward compatability |