Sorry, there's a typo.
Here it is.
On Thu, Dec 29, 2011 at 5:32 PM, Nala Ginrut <[email protected]> wrote:
> hi guilers!
> It seems like there's no "regexp-split" procedure in Guile.
> What we have is "string-split" which accepted Char only.
> So I wrote one for myself.
>
> ------python code-----
> >>> import re
> >>> re.split("([^0-9])", "123+456*/")
> [’123’, ’+’, ’456’, ’*’, ’’, ’/’, ’’]
> --------code end-------
>
> The Guile version:
>
> ----------guile code-------
> (regexp-split "([^0-9])" "123+456*/")
> ==>("123" "+" "456" "*" "" "/" "")
> ----------code end--------
>
> Anyone interested in it?
>
>
From 7ecd9cfbb97b436ed9417f4962bc04264bcdb5e4 Mon Sep 17 00:00:00 2001
From: NalaGinrut <[email protected]>
Date: Thu, 29 Dec 2011 17:45:43 +0800
Subject: [PATCH] ADD regexp-split
---
module/ice-9/regex.scm | 22 +++++++++++++++++++++-
1 files changed, 21 insertions(+), 1 deletions(-)
diff --git a/module/ice-9/regex.scm b/module/ice-9/regex.scm
index f7b94b7..2ab28de 100644
--- a/module/ice-9/regex.scm
+++ b/module/ice-9/regex.scm
@@ -41,7 +41,7 @@
#:export (match:count match:string match:prefix match:suffix
regexp-match? regexp-quote match:start match:end match:substring
string-match regexp-substitute fold-matches list-matches
- regexp-substitute/global))
+ regexp-substitute/global regexp-split))
;; References:
;;
@@ -226,3 +226,23 @@
(begin
(do-item (car items)) ; This is not.
(next-item (cdr items)))))))))))
+
+(define regexp-split
+ (lambda (regex str)
+ (let* ([ret (fold-matches
+ regex str (list '() 0 0 '(""))
+ (lambda (m prev)
+ (let* ([ll (car prev)]
+ [count (1+ (cadr prev))]
+ [start (caddr prev)]
+ [tail (match:suffix m)]
+ [end (match:start m)]
+ [s (string-copy str start end)]
+ )
+ (list `(,@ll ,s ,(match:substring m))
+ count (match:end m) tail)
+ )))] ;; end fold-matches
+ ) ;; end let*
+ `(,@(car ret) ,(cadddr ret))
+ )))
+
--
1.7.0.4
