home *** CD-ROM | disk | FTP | other *** search
- ;;;
- ;;; Copyright (c) 1985 Massachusetts Institute of Technology
- ;;;
- ;;; This material was developed by the Scheme project at the
- ;;; Massachusetts Institute of Technology, Department of
- ;;; Electrical Engineering and Computer Science. 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. Users of this software agree to make their best efforts (a)
- ;;; to return to the MIT Scheme project any improvements or
- ;;; extensions that they make, so that these may be included in
- ;;; future releases; and (b) to inform MIT of noteworthy uses of
- ;;; this software.
- ;;;
- ;;; 3. All materials developed as a consequence of the use of
- ;;; this software shall duly acknowledge such use, in accordance
- ;;; with the usual standards of acknowledging credit in academic
- ;;; research.
- ;;;
- ;;; 4. MIT has made no warrantee or representation that the
- ;;; operation of this software will be error-free, and MIT is
- ;;; under no obligation to provide any services, by way of
- ;;; maintenance, update, or otherwise.
- ;;;
- ;;; 5. In conjunction with products arising from the use of this
- ;;; material, there shall be no use of the name of the
- ;;; Massachusetts Institute of Technology nor of any adaptation
- ;;; thereof in any advertising, promotional, or sales literature
- ;;; without prior written consent from MIT in each case.
- ;;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
- ;;;
- ;;; Modified by Texas Instruments Inc 8/15/85
- ;;;
- ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-
- ;;; 4:01pm Tuesday, 25 June 1985
- (begin
- (define-integrable char-equal-ci? char-ci=?)
-
- (define-integrable char-equal? char=?)
-
- (define-integrable char-less-ci? char-ci<?)
-
- (define-integrable char-less? char<?)
-
- (define-integrable string-equal-ci? string-ci=?)
-
- (define-integrable string-equal? string=?)
-
- (define-integrable string-less-ci? string-ci<?)
-
- (define-integrable string-less? string<?)
-
- (define-integrable substring-equal-ci? substring-ci=?)
-
- (define-integrable substring-equal? substring=?)
-
- (define-integrable substring-less-ci? substring-ci<?)
-
- (define-integrable substring-less? substring<?)
-
- (define-integrable char= char=?)
-
- (define-integrable char< char<?)
-
- )
- (define char-upper-case?
- (lambda (c)
- (char=? (char-upcase c) c)))
-
- (define char-lower-case?
- (lambda (c)
- (char=? (char-downcase c) c)))
-
- (macro string-allocate
- (lambda (e)
- (list 'make-string (cadr e) #F)))
-
-
-
- ;;;; Comparison Primitives
-
- (define substring-match-forward)
- (define substring-match-forward-ci)
-
- (let ()
- (define (make-substring-match-forward char-equal?)
- (lambda (string1 start1 end1 string2 start2 end2)
- (define (loop index1 index2 n)
- (if (or (= index1 end1)
- (= index2 end2)
- (not (char-equal? (string-ref string1 index1)
- (string-ref string2 index2))))
- n
- (loop (1+ index2) (1+ index2) (1+ n))))
- (loop start1 start2 0)))
- (set! substring-match-forward
- (make-substring-match-forward char-equal?))
- (set! substring-match-forward-ci
- (make-substring-match-forward char-equal-ci?)))
-
- (define string-match-forward)
- (define string-match-forward-ci)
-
- (let ()
- (define (string-comparison substring-comparison)
- (lambda (string1 string2)
- (substring-comparison string1 0 (string-length string1)
- string2 0 (string-length string2))))
- (set! string-match-forward
- (string-comparison substring-match-forward))
- (set! string-match-forward-ci
- (string-comparison substring-match-forward-ci)))
-
- ;;;; Character Search Primitives
-
- (define substring-find-next-char-ci
- (lambda (string start end char)
- (let ((char1 (char-upcase char))
- (char2 (char-downcase char)))
- (let ((set (make-string 2 char1)))
- (substring-find-next-char-in-set string start end
- (string-set! set 1 char2))))))
-
- (define substring-find-previous-char-ci
- (lambda (string start end char)
- (let ((char1 (char-upcase char))
- (char2 (char-downcase char)))
- (let ((set (make-string 2 char1)))
- (substring-find-previous-char-in-set string start end
- (string-set! set 1 char2))))))
-
-