From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.io/gmane.comp.tex.context/77077 Path: news.gmane.org!not-for-mail From: Hans Hagen Newsgroups: gmane.comp.tex.context Subject: Re: [callbacks] proper registration, node subtypes Date: Tue, 26 Jun 2012 13:13:19 +0200 Message-ID: <4FE9994F.6060403@wxs.nl> References: <20120625133924.GB31738@phlegethon> <4FE87402.3000708@wxs.nl> <20120625145031.GC31738@phlegethon> Reply-To: mailing list for ConTeXt users NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1"; Format="flowed" Content-Transfer-Encoding: quoted-printable X-Trace: dough.gmane.org 1340709217 30336 80.91.229.3 (26 Jun 2012 11:13:37 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Tue, 26 Jun 2012 11:13:37 +0000 (UTC) To: mailing list for ConTeXt users Original-X-From: ntg-context-bounces@ntg.nl Tue Jun 26 13:13:33 2012 Return-path: Envelope-to: gctc-ntg-context-518@m.gmane.org Original-Received: from balder.ntg.nl ([195.12.62.10]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1SjTi2-000553-7W for gctc-ntg-context-518@m.gmane.org; Tue, 26 Jun 2012 13:13:26 +0200 Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 8F202101DD; Tue, 26 Jun 2012 13:13:25 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id zR2EoT1VC7W9; Tue, 26 Jun 2012 13:13:23 +0200 (CEST) Original-Received: from balder.ntg.nl (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id CD64C101E7; Tue, 26 Jun 2012 13:13:23 +0200 (CEST) Original-Received: from localhost (localhost [127.0.0.1]) by balder.ntg.nl (Postfix) with ESMTP id 822BF101E7 for ; Tue, 26 Jun 2012 13:13:22 +0200 (CEST) X-Virus-Scanned: Debian amavisd-new at balder.ntg.nl Original-Received: from balder.ntg.nl ([127.0.0.1]) by localhost (balder.ntg.nl [127.0.0.1]) (amavisd-new, port 10024) with LMTP id vObUYu3d1h7T for ; Tue, 26 Jun 2012 13:13:21 +0200 (CEST) Original-Received: from filter1-ams.mf.surf.net (filter1-ams.mf.surf.net [192.87.102.69]) by balder.ntg.nl (Postfix) with ESMTP id 4331D101DD for ; Tue, 26 Jun 2012 13:13:21 +0200 (CEST) Original-Received: from smtp.ziggozakelijk.nl (D57D1DA2.static.ziggozakelijk.nl [213.125.29.162]) by filter1-ams.mf.surf.net (8.14.3/8.14.3/Debian-9.4) with ESMTP id q5QBDJQn009398 for ; Tue, 26 Jun 2012 13:13:19 +0200 X-Default-Received-SPF: pass (skip=loggedin (res=PASS)) x-ip-name=10.100.1.100; Original-Received: from [10.100.1.100] (unverified [10.100.1.100]) by pragma-net.nl (SurgeMail 5.3h2) with ESMTP (TLS) id 8290-1713362 for ; Tue, 26 Jun 2012 13:13:17 +0200 User-Agent: Mozilla/5.0 (Windows NT 6.1; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 In-Reply-To: <20120625145031.GC31738@phlegethon> X-Authenticated-User: hagen@controller-9 X-Bayes-Prob: 0.0001 (Score 0, tokens from: @@RPTN) X-CanIt-Geo: ip=213.125.29.162; country=NL; region=03; city=Hattem; latitude=52.4724; longitude=6.0696; http://maps.google.com/maps?q=52.4724,6.0696&z=6 X-CanItPRO-Stream: uu:ntg-context@ntg.nl (inherits from uu:default, base:default) X-Canit-Stats-ID: 0NHqXdjg2 - a4a33b3bd87e - 20120626 (trained as not-spam) X-Scanned-By: CanIt (www . roaringpenguin . com) on 192.87.102.69 X-BeenThere: ntg-context@ntg.nl X-Mailman-Version: 2.1.13 Precedence: list List-Id: mailing list for ConTeXt users List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: ntg-context-bounces@ntg.nl Errors-To: ntg-context-bounces@ntg.nl Xref: news.gmane.org gmane.comp.tex.context:77077 Archived-At: On 25-6-2012 16:50, Philipp Gesang wrote: > =B7=B7=B7=B7=B7=B7=B7=B7=B7 > >> On 25-6-2012 15:39, Philipp Gesang wrote: >> >>> - Does the difference wrt node subtype matter assuming I only >>> (a) copy glyph nodes and (b) manipulate their .char field? >> >> not that much, it's just a state signal for font processing > > Good to know. > >>> Any insights on this matter would be greatly appreciated. Regards >>> Philipp >> >> it all depends on what you want to do > > Traverse the node list of a paragraph before line break from head > to tail in sequential order, recursing into sublists where they > appear. The callback removes and inserts nodes: which ones > depends on the nodes already processed (has a state). > > Using the previous example code, > > \startfoo > a\hbox{b}c > \stopfoo > > should result in the traversal , , . \starttext \startluacode local function processnestedlist(head,n) local current, done =3D head, false while current do local id =3D current.id if id =3D=3D nodes.nodecodes.hlist or id =3D=3D nodes.nodecodes.vl= ist then local _, d =3D processnestedlist(current.list,n) if d then done =3D true end elseif id =3D=3D nodes.nodecodes.hglue_code and current.leader then local _, d =3D processnestedlist(current.leader,n) if d then done =3D true end elseif id =3D=3D nodes.nodecodes.glyph then -- todo: dics nodes n =3D n + 1 print(n,utf.char(current.char)) end current =3D current.next end return head, done, n end thirddata =3D thirddata or {} thirddata.test =3D thirddata.test or { } thirddata.test.one =3D function(head) local head, done, n =3D processnestedlist(head,0) print("n of glyphs",n) return head, done end nodes.tasks.appendaction ("processors","before","thirddata.test.one") \stopluacode \ruledhbox to 10cm {\strut hello \ruledhbox{brave new} world = \cleaders\hbox{!}\hfil} \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl ----------------------------------------------------------------- ___________________________________________________________________________= ________ If your question is of interest to others as well, please add an entry to t= he Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-cont= ext webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___________________________________________________________________________= ________