I doubt this is the case, since the regex unit is almost identical
between Chicken 3 and Chicken 4. Taylor, can you compile Chicken with
the attached regex.scm and see if there is any routine from the regex
unit that is called at the point when the build process gets stuck?
Thanks,
-Ivan
;;;; regex.scm - Unit for using the PCRE regex package
;
; Copyright (c) 2000-2007, Felix L. Winkelmann
; Copyright (c) 2008, The Chicken Team
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following
; conditions are met:
;
; Redistributions of source code must retain the above copyright notice, this
list of conditions and the following
; disclaimer.
; Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following
; disclaimer in the documentation and/or other materials provided with the
distribution.
; Neither the name of the author nor the names of its contributors may be
used to endorse or promote
; products derived from this software without specific prior written
permission.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS
; OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
OF MERCHANTABILITY
; AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT HOLDERS OR
; CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR
; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR
; SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
CAUSED AND ON ANY
; THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR
; OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
ADVISED OF THE
; POSSIBILITY OF SUCH DAMAGE.
(cond-expand
[chicken-compile-shared]
[else (declare (unit regex))] )
(declare
(usual-integrations)
(disable-interrupts)
(generic)
(disable-warning var)
(bound-to-procedure
get-output-string open-output-string
string->list list->string string-length string-ref substring make-string
string-append
reverse list-ref
char=? char-alphabetic? char-numeric? char->integer
##sys#size ##sys#error ##sys#fragments->string ##sys#write-char-0 )
(export
regexp? regexp
string-match string-match-positions string-search string-search-positions
string-split-fields string-substitute string-substitute*
glob? glob->regexp
grep regexp-escape
irregex string->irregex sre->irregex string->sre
irregex? irregex-match-data?
irregex-new-matches irregex-reset-matches!
irregex-match-start irregex-match-end irregex-match-substring
irregex-match-num-submatches
irregex-search irregex-search/matches irregex-match irregex-match-string
irregex-replace irregex-replace/all
irregex-dfa irregex-dfa/search irregex-dfa/extract
irregex-nfa irregex-flags irregex-submatches irregex-lengths irregex-names )
)
(cond-expand
[paranoia]
[else
(declare
(no-bound-checks)
(no-procedure-checks-for-usual-bindings) ) ] )
(cond-expand
[unsafe
(eval-when (compile)
(define-macro (##sys#check-integer . _) '(##core#undefined))
(define-macro (##sys#check-blob . _) '(##core#undefined))
(define-macro (##sys#check-vector . _) '(##core#undefined))
(define-macro (##sys#check-structure . _) '(##core#undefined))
(define-macro (##sys#check-range . _) '(##core#undefined))
(define-macro (##sys#check-pair . _) '(##core#undefined))
(define-macro (##sys#check-list . _) '(##core#undefined))
(define-macro (##sys#check-symbol . _) '(##core#undefined))
(define-macro (##sys#check-string . _) '(##core#undefined))
(define-macro (##sys#check-char . _) '(##core#undefined))
(define-macro (##sys#check-exact . _) '(##core#undefined))
(define-macro (##sys#check-port . _) '(##core#undefined))
(define-macro (##sys#check-number . _) '(##core#undefined)) ) ]
[else
(declare
(bound-to-procedure
;; Imports
##sys#check-string ##sys#check-list ##sys#check-exact ##sys#check-vector
##sys#check-structure ##sys#check-symbol ##sys#check-blob
##sys#check-integer )
(emit-exports "regex.exports") ) ] )
(register-feature! 'regex 'irregex)
(include "irregex.scm")
(define-record regexp x)
(define (regexp pat #!optional caseless extended utf8)
(make-regexp
(apply
irregex
pat
(let ((opts '()))
(when caseless (set! opts (cons 'i opts)))
(when extended (set! opts (cons 'x opts)))
(when utf8 (set! opts (cons 'utf8 opts)))
opts))) )
(define (unregexp x)
(cond ((regexp? x) (regexp-x x))
((irregex? x) x)
(else (irregex x))))
(define (string-match rx str . rest)
(print "begin string-match")
(let ((rx (unregexp rx)))
(and-let* ((m (irregex-match rx str)))
(let loop ((i (irregex-match-num-submatches m))
(res '()))
(if (fx<= i 0)
(begin
(print "end string-match")
(cons str res)
)
(loop (fx- i 1) (cons (irregex-match-substring m i) res)))))))
(define (string-match-positions rx str . rest)
(print "begin string-match-positions")
(let ((rx (unregexp rx)))
(and-let* ((m (irregex-match rx str)))
(let loop ((i (irregex-match-num-submatches m))
(res '()))
(if (fx<= i 0)
(begin
(print "end string-match-positions")
(cons (list 0 (string-length str)) res)
)
(loop (fx- i 1) (cons (list (irregex-match-start-index m i)
(irregex-match-end-index m i))
res)))))))
(define (string-search rx str #!optional (start 0) (range (string-length str)))
(print "begin string-search")
(let ((rx (unregexp rx)))
(and-let* ((n (string-length str))
(m (irregex-search rx str start (min n (fx+ start range)))))
(let loop ((i (irregex-match-num-submatches m))
(res '()))
(if (fx< i 0)
(begin
(print "end string-search")
res)
(loop (fx- i 1) (cons (irregex-match-substring m i) res)))))))
(define (string-search-positions rx str #!optional (start 0) (range
(string-length str)))
(print "begin string-search-positions")
(let ((rx (unregexp rx)))
(and-let* ((n (string-length str))
(m (irregex-search rx str start (min n (fx+ start range)))))
(let loop ((i (irregex-match-num-submatches m))
(res '()))
(if (fx< i 0)
(begin
(print "end string-search-positions")
res)
(loop (fx- i 1) (cons (list (irregex-match-start-index m i)
(irregex-match-end-index m i))
res)))))))
;;; Split string into fields:
(define string-split-fields
(let ([reverse reverse]
[substring substring]
[string-search-positions string-search-positions] )
(lambda (rgxp str . mode-and-start)
(print "begin string-split-fields")
(##sys#check-string str 'string-split-fields)
(let* ([argc (length mode-and-start)]
[len (##sys#size str)]
[mode (if (fx> argc 0) (car mode-and-start) #t)]
[start (if (fx> argc 1) (cadr mode-and-start) 0)]
[fini (case mode
[(#:suffix)
(lambda (ms start)
(if (fx< start len)
(##sys#error 'string-split-fields
"record does not end with suffix" str
rgxp)
(reverse ms) ) ) ]
[(#:infix)
(lambda (ms start)
(if (fx>= start len)
(reverse (cons "" ms))
(reverse (cons (substring str start len) ms)) ) ) ]
[else (lambda (ms start) (reverse ms)) ] ) ]
[fetch (case mode
[(#:infix #:suffix) (lambda (start from to) (substring
str start from))]
[else (lambda (start from to) (substring str from to))] )
] )
(let loop ([ms '()] [start start])
(let ([m (string-search-positions rgxp str start)])
(if m
(let* ([mp (car m)]
[from (car mp)]
[to (cadr mp)] )
(if (fx= from to)
(if (fx= to len)
(fini ms start)
(loop (cons (fetch start (fx+ from 1) (fx+ to 2)) ms)
(fx+ to 1)) )
(loop (cons (fetch start from to) ms) to) ) )
(begin
(print "end string-split-fields")
(fini ms start) ) ) ) ) ) ) ))
;;; Substitute matching strings:
(define string-substitute
(let ([substring substring]
[reverse reverse]
[make-string make-string]
[string-search-positions string-search-positions] )
(lambda (regex subst string . flag)
(print "begin string-substitute")
(##sys#check-string subst 'string-substitute)
(let* ([which (if (pair? flag) (car flag) 1)]
[substlen (##sys#size subst)]
(strlen (##sys#size string))
[substlen-1 (fx- substlen 1)]
[result '()]
[total 0] )
(define (push x)
(set! result (cons x result))
(set! total (fx+ total (##sys#size x))) )
(define (substitute matches)
(let loop ([start 0] [index 0])
(if (fx>= index substlen-1)
(push (if (fx= start 0) subst (substring subst start substlen)))
(let ([c (##core#inline "C_subchar" subst index)]
[index+1 (fx+ index 1)] )
(if (char=? c #\\)
(let ([c2 (##core#inline "C_subchar" subst index+1)])
(if (and (not (char=? #\\ c2)) (char-numeric? c2))
(let ([mi (list-ref matches (fx- (char->integer c2)
48))])
(push (substring subst start index))
(push (substring string (car mi) (cadr mi)))
(loop (fx+ index 2) index+1) )
(loop start (fx+ index+1 1)) ) )
(loop start index+1) ) ) ) ) )
(let loop ([index 0] [count 1])
(let ((matches (and (fx< index strlen)
(string-search-positions regex string index))))
(cond [matches
(let* ([range (car matches)]
[upto (cadr range)] )
(cond ((fx= 0 (fx- (cadr range) (car range)))
(##sys#error
'string-substitute "empty substitution match"
regex) )
((or (not (fixnum? which)) (fx= count which))
(push (substring string index (car range)))
(substitute matches)
(loop upto #f) )
(else
(push (substring string index upto))
(loop upto (fx+ count 1)) ) ) ) ]
[else
(print "end string-substitute")
(push (substring string index (##sys#size string)))
(##sys#fragments->string total (reverse result)) ] ) ) ) ) )
) )
(define string-substitute*
(let ([string-substitute string-substitute])
(lambda (str smap . mode)
(print "begin string-substitute*")
(##sys#check-string str 'string-substitute*)
(##sys#check-list smap 'string-substitute*)
(let ((mode (and (pair? mode) (car mode))))
(let loop ((str str) (smap smap))
(if (null? smap)
(begin
(print "end string-substitute*")
str)
(let ((sm (car smap)))
(loop (string-substitute (car sm) (cdr sm) str mode)
(cdr smap) ) ) ) ) ) ) ) )
;;; Glob support:
;FIXME is it worthwhile making this accurate?
(define (glob? str)
(##sys#check-string str 'glob?)
(print "begin glob?")
(let loop ([idx (fx- (string-length str) 1)])
(and (fx<= 0 idx)
(case (string-ref str idx)
[(#\* #\] #\?)
(or (fx= 0 idx)
(begin
(print "end glob?")
(not (char=? #\\ (string-ref str (fx- idx 1)))))
(loop (fx- idx 2)))]
[else
(loop (fx- idx 1))]) ) ) )
(define glob->regexp
(let ([list->string list->string]
[string->list string->list] )
(lambda (s)
(print "begin glob->regexp")
(##sys#check-string s 'glob->regexp)
(list->string
(let loop ((cs (string->list s)))
(if (null? cs)
(begin
(print "end glob->regexp")
'())
(let ([c (car cs)]
[rest (cdr cs)] )
(cond [(char=? c #\*) `(#\. #\* ,@(loop rest))]
[(char=? c #\?) (cons '#\. (loop rest))]
[(char=? c #\[)
(cons
#\[
(let loop2 ((rest rest))
(if (pair? rest)
(cond ((char=? #\] (car rest))
(cons #\] (loop (cdr rest))))
((and (char=? #\- (car rest)) (pair? (cdr
rest)))
`(#\- ,(cadr rest) ,@(loop2 (cddr rest))))
((and (pair? (cdr rest)) (pair? (cddr rest))
(char=? #\- (cadr rest)) )
`(,(car rest) #\- ,(caddr rest)
,@(loop2 (cdddr rest))))
((pair? rest)
(cons (car rest) (loop2 (cdr rest))))
((null? rest)
(error 'glob->regexp "unexpected end of
character class" s))))))]
[(or (char-alphabetic? c) (char-numeric? c)) (cons c (loop
rest))]
[else `(#\\ ,c ,@(loop rest))] ) ) ) ) ) ) ) )
;;; Grep-like function on list:
(define grep
(let ([string-search string-search])
(lambda (rgxp lst)
(print "begin grep")
(##sys#check-list lst 'grep)
(let loop ([lst lst])
(if (null? lst)
(begin
(print "end grep")
'())
(let ([x (car lst)]
[r (cdr lst)] )
(if (string-search rgxp x)
(cons x (loop r))
(loop r) ) ) ) ) ) ) )
;;; Escape regular expression (suggested by Peter Bex):
(define regexp-escape
(let ([open-output-string open-output-string]
[get-output-string get-output-string] )
(lambda (str)
(print "begin regexp-escape")
(##sys#check-string str 'regexp-escape)
(let ([out (open-output-string)]
[len (##sys#size str)] )
(let loop ([i 0])
(cond [(fx>= i len)
(print "end regexp-escape")
(get-output-string out)]
[(memq (##core#inline "C_subchar" str i)
'(#\. #\\ #\? #\* #\+ #\^ #\$ #\( #\) #\[ #\] #\| #\{
#\}))
(##sys#write-char-0 #\\ out)
(##sys#write-char-0 (##core#inline "C_subchar" str i) out)
(loop (fx+ i 1)) ]
[else
(##sys#write-char-0 (##core#inline "C_subchar" str i) out)
(loop (fx+ i 1)) ] ) ) ) ) ) )
felix winkelmann <bunny...@gmail.com> writes:
> That means the irregex integration must be buggy. Time for the chicken-3
> maintainers to take over...
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