cl-ppcre-devel

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182 discussions

[cl-ppcre-devel] download-link on frontpage
by Lars Rune Nøstdal 23 Jun '06

23 Jun '06

Hello lispers, Just a quick note; it seems the cl-ppcre download-link on the frontpage points to an old version of cl-ppcre (1.2.12) while the newest one mentioned on the site is 1.2.14. :) -- Mvh, Lars Rune Nøstdal http://lars.nostdal.org/

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[cl-ppcre-devel] Re: An idea for ppcre::register-groups-bind
by Edi Weitz 12 Jun '06

12 Jun '06

Hi! Sorry for the delay, I was on vacation. Oh, and please use the mailing list - see Cc. On Sat, 3 Jun 2006 22:28:29 +0200, "Alexander Kjeldaas" <alexander.kjeldaas(a)gmail.com> wrote: > I'm a big fan of register-groups-bind. For some longer texts that > I'm parsing, I have code that looks like this: > > The idiom is - you want to go through the text matching various > regexps, but you want to keep on to the end-position in order to do > incremental matching. So I added an :end-holder keyword parameter > that is the name of a variable that is set to the end-match (I also > added :start-holder, but I don't use it). > > To me, this type of parsing is relatively simple to debug, but it is > also not too sloppy in that we don't start from the beginning all > the time. > > :end-place and :start-place might be better names, I don't know.. I think that the idea is basically OK, but I'm not sure if I like that seemingly END-POS is supposed to be an existing variable which is set - I think it'd be more Lisp-y to bind within the body of the form. Admittedly, the indentation would get quite nasty then. Cheers, Edi. > (defun parse-stuff (string) > "Parse various account information" > (let ((result nil) > end-pos) > (register-groups-bind (foo) > ("Kontoinformasjon for (.*)\\s+" string :end-holder end-pos) > (push `(:username ,foo) result)) > (register-groups-bind (foo) > ("Navn:[ \\t]+(.*)\\s+" string :start end-pos :end-holder end-pos) > (push `(:name ,foo) result)) > ;; Use (?=Telefon) to not affect the end-position. > (register-groups-bind (addr1 addr2 addr3) > ("Adresse:[ > \\t]+(.*)\\s+(?:(.*)\\s+)?(?:(.*)\\s+)?(?=Telefon)" string :start > end-pos :end-holder end-pos) > (push (remove-if-not #'identity `(:address ,addr1 ,addr2 ,addr3)) result)) > (register-groups-bind (foo) > ("Telefon:[ \\t]+(\\+?\\d+)" string :start end-pos :end-holder end-pos) > (push `(:phone ,foo) result)) > (register-groups-bind (foo) > ("Mobil:[ \\t]+(\\+?\\d+)" string :start end-pos :end-holder end-pos) > (push `(:mobile-phone ,foo) result)) > (register-groups-bind (foo) > ("Epost:[ \\t]+(.*)\\n" string :start end-pos :end-holder end-pos) > (push `(:email ,foo) result)) > (register-groups-bind (foo) > ("Epost:[ \\t]+(.*)\\n" string :start end-pos :end-holder end-pos) > (push `(:email ,foo) result)) > (nreverse result)))

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[cl-ppcre-devel] New version 1.2.14
by Edi Weitz 24 May '06

24 May '06

ChangeLog: Version 1.2.14 2006-05-24 Added missing </code> tag in docs (thanks to Wojciech Kaczmarek) Fixed IMPORT statement for LW Download: http://weitz.de/files/cl-ppcre.tar.gz

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[cl-ppcre-devel] Multi-line-mode confusion...
by Gary King 01 May '06

01 May '06

If I can pull people attention away from the International Lisp conference (!)... Perhaps I'm missing something but both > (cl-ppcre:scan > (cl-ppcre:create-scanner "(.*?)c.*?") > "a > b > c > d > e") and > (cl-ppcre:scan > (cl-ppcre:create-scanner "(.*?)c.*?" :multi-line-mode t) > "a > b > c > d > e") return the same values: 4 5 #(4) #(4). I expected the second form to return 0 4 #(0) #(4). Where have I gone wrong... thanks. -- Gary Warren King metabang.com http://www.metabang.com/ (413) 210 7511 gwking on #lisp (occasionally)

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[cl-ppcre-devel] Matching problem while using \s (?)
by Daniel Caune 28 Apr '06

28 Apr '06

Hi, I'm facing a strange result while trying to scan a string: CL-USER> (defconstant +iso-8601-regex+ "([0-9]+)-([0-9]+)-([0-9]+)[\sT]*([0-9]+):([0-9]+):([0-9]+)[+-]([0-9]+)" ) +ISO-8601-REGEX+ CL-USER> (cl-ppcre:scan-to-strings +iso-8601-regex+ "2006-04-13 00:00:00+00") NIL CL-USER> (cl-ppcre:scan-to-strings +iso-8601-regex+ "2006-04-13T00:00:00+00") "2006-04-13T00:00:00+00" #("2006" "04" "13" "00" "00" "00" "00") For some reasons, \s seems not to match a whitespace character, unless the space within "2006-04-13 00:00:00+00" is not the space cl-ppcre expects (encoding on Linux?! Hmm... a space is more likely to be encoded with 0x20, isn't it?!). I tried to match both "2006-04-13 00:00:00+00" and "2006-04-13T00:00:00+00" with the Regex Coach (on Windows), and it works perfectly with that same regex! Any idea? What can I check? Regards, -- Daniel CAUNE Ubisoft Online Technology (514) 4090 2040 ext. 5418

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[cl-ppcre-devel] Detecting "partial" matches
by Dan Debertin 26 Apr '06

26 Apr '06

Hi, I'm using CL-PPCRE to develop a character-at-a-time lexer. This is causing me some perplexity, though, with regexes like the common notation for hexadecimal literals: "^0(?:x[0-9A-Fa-f]+)?$" This should match both the string "0", between positions 0 and 1, as just a bare literal zero, and should also match things like "0xa6" between positions 0 and 3, but should not match simply "0x". But I want the longest match possible, so (for example) I'd like to know that while "0x" didn't match, parts of the regex *did* match and might produce a "real" match depending on what comes after "x". So, in succession, if the input is "0xa6 ", my scanner gets called thus: 1. Input: "0". a) A match. b) But it *could* possibly match more, depending on what comes next. 2. Input: "0x". a) Not a match. b) But, once again, the possibility exists that more input could still produce a longer match than "0". 3. Input: "0xa". a) A match. b) Because of the "+" attached to the character class, a longer match is still possible. 4. Input: "0xa6". a) A match. b) As above. 5. Input: "0xa6 ". a) Not a match. b) Will *never* match no matter how much more input you add to it. CL-PPCRE just tells me a), and I also want to know b). Is there any way to get this information (if it even exists) out of the scanner? TIA, -Dan -- Dan Debertin | airboss(a)nodewarrior.org | www.nodewarrior.org |

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[cl-ppcre-devel] added a minor example for regex-replace
by Mac Chan 24 Mar '06

24 Mar '06

See attached html file. Just trying to make the already superb documentation more complete. * (cl-ppcre:regex-replace "(be)(nev)(o)(lent)" "benevolent: adj. generous, kind" #'(lambda (match &rest registers) (format nil "~A [~{~A~^.~}]" match registers)) :simple-calls t) "benevolent [be.nev.o.lent]: adj. generous, kind" -- Mac

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RE: [cl-ppcre-devel] Why is parse-string not exported
by Kick Damien-DKICK1 25 Jan '06

25 Jan '06

Edi Weitz wrote: > On Tue, 24 Jan 2006 21:29:27 -0500, Gary King <gwking(a)metabang.com> wrote: > > Parse-string seems like a very handy tool for learning how to create > > parse trees and for creating them even if you already know about them. > > Is there a reason not to export it? > I wouldn't mind exporting it but I don't think it makes sense when > you're actually /using/ PPCRE. Seems more like something for the > REPL to me. Unless, perhaps, someone wanted to write a code walker for a regular expression and wanted an easy way to canonicalize a regexp into parse tree form.

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[cl-ppcre-devel] using parse-tree-synonyms to extend character classes...
by Gary King 25 Jan '06

25 Jan '06

Should i expect the following to work? (define-parse-tree-synonym hostname-char #.(cl-ppcre::parse-string "[-a-zA-Z0-9_.]")) (define-parse-tree-synonym pathname-char (:char-class hostname-char #\: #\@ #\& #\? #\= #\+ #\, #\! #\/ #\~ #\* #\' #\% #\\ #\$)) (define-parse-tree-synonym pathname (:sequence (:greedy-repetition 0 nil pathname-char))) (scan-to-strings '(:sequence pathname) "My page is at http://www.metabang.com/foo/ boo.") > Error: Unknown symbol HOSTNAME-CHAR in character class > While executing: PPCRE::CONVERT-CHAR-CLASS-TO-HASH > Type Command-. to abort. See the Restarts… menu item for further choices. 1 > Thanks, -- Gary Warren King metabang.com http://www.metabang.com/

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[cl-ppcre-devel] Why is parse-string not exported
by Gary King 25 Jan '06

25 Jan '06

Parse-string seems like a very handy tool for learning how to create parse trees and for creating them even if you already know about them. Is there a reason not to export it? thanks, -- Gary Warren King metabang.com http://www.metabang.com/

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