May 2008 - ntg-context - NTG Mailing Lists

luatex and xml
by WN 18 May '08

18 May '08

Hi, I am trying to parse a xml file with mkiv to process a list of invoices (factuur in dutch). The xml file looks like this <?xml version='1.0 standalone='yes' ?> <factuur> <nummer>123456789</nummer> <datum>1 januari 2008</datum> <medewerker></medewerker> <regels> <omschrijving>Omschrijving geleverde dienst a</omschrijving> <bedrag>1500,00</bedrag> <omschrijving>Omschrijving geleverde dienst b</omschrijving> <bedrag>200,00</bedrag> </regels> </factuur> I want to extract and sum the invoices (regels). I managed to get things working (printing) but don't know how to assign these values into lua variables for the summing. The test code looks like this % engine=luatex \starttext \startluacode document.xml = document.xml or { } -- define namespace document.xml = xml.load("factuur.xml") -- load the file n = xml.count(document.xml, "/factuur/regels/omschrijving") for i = 1, n do -- -- here I want to assign the values returned by xml.filter into local variable amount -- xml.sprint(xml.filter(document.xml, "/factuur/regels/bedrag/position(" .. i .. ")" )) end \stopluacode \stoptext Kind regards WN

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missing btex ..etex in mp figure
by luigi scarso 17 May '08

17 May '08

In \starttext \startTEXpage \startlua metapost.process("metafun",{"beginfig(1);", "a=.7in; b=0.5in;", "z0=(0,0); z1=(a,0); z2=(0,b);", "z0=.5[z1,z3]=.5[z2,z4];", "draw z1..z2..z3..z4..cycle;", "drawarrow z0..z1;", "drawarrow z0..z2;", "label.top(btex $a$ etex, .5[z0,z1]);", "label.lft(btex $b$ etex, .5[z0,z2]);", "endfig;"}) \stoplua \stopTEXpage \stoptext there are no labels, but I believe that it's wrong. -- luigi it's new . it's powerful . it's luatex . http://www.luatex.org

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Re: [NTG-context] a question about ConTeXt + AUCTeX
by Dalyoung Jeong 17 May '08

17 May '08

Dear Thomas, Thank you for your reply. XeTeX+ ConTeXt is working after adding a command as you said. (customize-variaable) But Lua + ConTeXt is not working. If I do "mtxrun --script context ...", then it complains. %%%%%%% Running `Other' on `test-lua' with ``mtxrun --script context %t'' MtxRun | unknown script: context %%%%%%%%%%%%%%%%% If I changed the command "texmfstart texexec --lua %t", then I got the following. Running `LuaConTeXt' on `test-lua' with ``texmfstart texexec --lua test-lua.tex'' TeXExec | processing document 'test-lua.tex' TeXExec | no ctx file found TeXExec | tex processing method: context TeXExec | TeX run 1 TeXExec | writing option file test-lua.top TeXExec | using randomseed 828 TeXExec | tex engine: luatex TeXExec | tex format: cont-en LuaTools | using format name /Users/dalyoung/luatex-cache/context/ 5759d5068ca15ba6658b2e6454390744/formats/cont-en.fmt LuaTools | no luc/lua with name /Users/dalyoung/luatex-cache/context/ 5759d5068ca15ba6658b2e6454390744/formats/cont-en LuaTools | LuaTools | runtime: 0.023 seconds TeXUtil | parsing file test-lua.tui TeXUtil | shortcuts : 169 TeXUtil | expansions: 308 TeXUtil | reductions: 0 TeXUtil | divisions : 0 TeXUtil | loaded files: 1 TeXUtil | temporary files: 0 TeXUtil | commands: 21 TeXUtil | programs: 0 TeXUtil | tuo file saved TeXExec | runtime: 0.891602 LuaConTeXt finished at Sat May 17 16:14:24 However, the same command worked well in a terminal. Maybe the system setup of yours is different from mine. Usually I run "source .luatex" first before running luatex. So my guess is that emacs couldn't know the luatex path even though it is known in another program "terminal". Am I correct? If so, how to apply environment .luatex to global condition? Otherwise, what are wrong in my setup? Thank you. Best regards, Dalyoung Jeong

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some minor problems (mkiv)
by Peter Rolf 17 May '08

17 May '08

hi, i'm still trying to make my code run with mkiv. here are two minor problems. the first one is easy to deal with, but the second one currently breaks my testbed. % engine=luatex \setupcolors[state=start] \starttext \startMPcode label("no color",origin) withcolor red; % always black \stopMPcode \string{\{} \stoptext greetings, peter

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getting inside xhtml / mkii
by Jelle Huisman 16 May '08

16 May '08

Hello, I want to process have a rather complicated xhtml file with dictionary data containing lots of entries like: papa Eng daddy I tried to write some code to get the individual data elements into my ConTeXt-module, but I didn't succeed. This: \defineXMLargument [span class="word"]{\Mywordstyle{\XMLvar{class="word"}{}}} for example fails, it gives all the data within all the different span's, whereas I want to select the different data items using the <span class-attributes (and typeset the different items in different ways afterwards). Maybe I miss something obvious, but I would appreciate some help to solve this. (BTW: I use MKII for this project) Thanks, Jelle

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Removing inbreakable whitespace at pagebreaks
by Wolfgang Schuster 16 May '08

16 May '08

Hi, I try to take care in my letter module to keep at least the last sentence in the text the signature together on the same page, this did work but I introduced another problem. To get no linebreak between my two sections I used a nonbreakable whitespace between both but my implementation has the side effect to keep the whitespace also if there is no signature after the text even if it the last vertical skip before the page break. You can see in the following example what I mean. \setuplayout[lines=10]\showgrid \starttext \blank[force,9*line] text \par\nobreak\blank[line] \stoptext The last line of text is moved to the second although it would fit on the first page, I could use twopassdata in my module to get the information if the \nobreak is needed on this place but I hope there is also a solution to remove the skip in the first run, maybe for MkIV only. I looked yesterday in the sources and saw \vspacing in core-spa.mkiv, I dont't know what this should do and was unable to get it working but I'm interested to know how it did work and what it should do. Greetings Wolfgang

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Keeping a block of text together, without breaking footnotes, etc.
by Daniel Pittman 16 May '08

16 May '08

G'day. As part of a document I am laying out I have a number of blocks of text that I want to keep together on a single page -- either all before a page break or all after it. I can achieve this using a \vbox, but that has the fairly undesirable property of also preventing footnotes and, presumably, other ConTeXt layout from working as expected. What is the most effective way to achieve this? A good example of what I want follows; in this I want the entire contact form there kept as a single block, not split over pages. The same sort of situation comes up with some explanatory paragraphs and a yes/no question section of the form. \starttext \dorecurse{10} {\bf Contact Details} \starttabulate[|l|p|] \NC Name: \NC \thinrule \NC \AR \NC Address: \NC \thinrules[n=3] \NC \AR \NC Postcode: \NC \thinrule \NC \AR \NC Email: \NC \thinrule \NC \AR \NC Alternate Email: \NC \thinrule \NC \AR \NC Phone (BH): \NC \thinrule \NC \AR \NC Phone (AH): \NC \thinrule \NC \AR \NC Mobile: \NC \thinrule \NC \AR \stoptabulate \starttabulate[|p|l|] \NC Can this contact authorise work? \NC YES / NO \NC \AR \NC Can this contact authorise changes to this agreement? \NC YES / NO \NC \AR \NC Can we contact this person in an emergency? \NC YES / NO \NC \AR \stoptabulate \par} \stoptext I would rather have under-full pages than split the blocks of text -- and I definitely want to preserve the ability to insert footnotes into the running text, to clarify some of the terms or options. Regards, Daniel

2 1

figure not found box (mkiv)
by Peter Rolf 16 May '08

16 May '08

Hi, one problem fixed, the next one is knocking on the door. This must be the definition of a lucky man ;) Can anybody try the following code? Mhh, no problems on 'context live' (luatex 0.25.2). % engine=luatex \starttext \externalfigure[notfound.png] \stoptext results here in [..] ! Missing number, treated as zero. <to be read again> \relax \BeforeGroup ...medparameter \c!backgroundscreen } \bgroup \aftergroup \After... <argument> ...amedparameter \c!backgroundscreen ]{ \dofilledbox } \secondoftwoarguments #1#2->#2 \next1 ...d {\??ov \currentbackground }\donothing }}}\wd \extraframebox \zer... \rawprocesscommaitem ...commalevel \endcsname {#1} \expandafter \rawprocessco... ... l.9 Regards, Peter

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Mkiv and braces
by Aditya Mahajan 16 May '08

16 May '08

Hi, I am using ConTeXt ver: 2008.05.13, and in mkiv braces seem to gobble the next digit. They work fine with mkii. Minimal example \starttext The digits $\{0,1,2,3,4\}0,1,2,3,4$ The letters $\{a,b,c,d\}a,b,c,d$ \stoptext Aditya

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hierarchical modes
by Janko Hauser 15 May '08

15 May '08

Hello, I need to prepare a document for different audiences. The question here is, how to encapsulate the different parts of the document. There are paragraphs which are "public", some more which are "internal" and some which are "private". People who are in the private group should see everything, the group internal only the public parts and the internal ones. As far as I see, modes are not additive. What would be the best way to structure such a document and to style the different paragraphs, so that the different audiences see, who can read what? Thanks in advance, __Janko Hauser

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