gmane.comp.lang.lua.general

Re: [ANN] Dado 1.0

Tomas Guisasola Gorham — 2008-05-14T17:36:58

Hi Bertrand I'm sorry, the CVS is not hosted in LuaForge :-) I am attaching the diff to this message if you like it. Regards, TomásIndex: src/dado/init.lua =================================================================== RCS file: /usr/local/cvsroot/infra/src/dado/init.lua,v retrieving revision 1.5 retrieving revision 1.6 diff -r1.5 -r1.6 5c5 < -- < at >release $Id: init.lua,v 1.5 2008/04/20 21:27:42 tomas Exp $ --- 168a169 180c181 < end --- Index: src/dado/object.lua =================================================================== RCS file: /usr/local/cvsroot/infra/src/dado/object.lua,v retrieving revision 1.4 retrieving revision 1.5 diff -r1.4 -r1.5 10c10 < -- < at >release $Id: object.lua,v 1.4 2008/04/09 03:16:15 tomas Exp $ --- 13c13 < local getmetatable, ipairs, pairs, rawget, rawset, setmetatable, type = getmetatable, ipairs, pairs, rawget, rawset, setmetatable, type --- 143a144,155 148c160 < return self.__dado:insert (self.table_name, self) == 1 --- 156c168 <

Re: Lua on Maemo (Nokia N810 and friends)

Fabio Mascarenhas — 2008-05-14T17:11:34

Hi, This is the way I did when I built Lua and Kepler debs for the Nokia 770, but it's too much of a hassle just to build a couple of packages, I thought someone would have already done all this and packaged it up as a nice VM image. :-) -- Fabio Mascarenhas On Wed, May 14, 2008 at 1:17 PM, Gerhard Sittig gmx.net> wrote:

Re: breaking down stream

Michael Wolf — 2008-05-14T17:10:57

Hi, IMHO the best approach is to use a table of country codes indexed by length containing an areacode table also indexed by length. Then you would check from the longest to the shortes codes. Here is the algorithm with a sample code table: (area codes are not real ones exept for 43 Austria :-) Code is not very well tested!! local codes={ [1]={ ['1']={ [1]={['3']=true,['4']=true,['5']=true}, [2]={['32']=true,['24']=true,['25']=true}, [3]={['321']=true,['212']=true}, }, ['7']={ [1]={['1']=true,['2']=true,['3']=true}, [3]={['112']=true,['223']=true}, }, }, [2]={ ['43']={ [1]={['1']=true,['7']=true}, [2]={['05']=true}, [4]={['720']=true,['800']=true} }, }, } local table_maxn=table.maxn local string_sub=string.sub local function splitnumber(number) number=tostring(number) --ensure number is a string for c=table_maxn(codes),1,-1 do --could b

Re: [ANN] Dado 1.0

Bertrand Mansion — 2008-05-14T16:25:44

Le 14 mai 08 à 15:05, Tomas Guisasola Gorham a écrit : Hi Tomas, Where is the CVS, I tried browsing it in luaforge but it looks empty, unless I missed something. Bertrand

Re: Lua on Maemo (Nokia N810 and friends)

Gerhard Sittig — 2008-05-14T16:17:37

IIUC, the Maemo SDK (from maemo.org -> SDK) contains - a chrooted environment - a native (x86) build chain - a cross (ARMel) build chain Maemo development requires an x86 workstation, preferrably Debian or Ubuntu, but other distros might work as well. You can build for the native PC environment during development, run gdb, valgrind and friends on the software. And then you switch to the cross compiler, and either run the resulting binaries in an emulator on the PC (which lacks support for a few edge cases, but usually works great) or beam the binaries onto the gadget and run them there. Running autoconf stuff is said to work when you change into the development environment and configure and build from there. But I've not yet done this, only glimpsed through the doc, since I don't have the gadget (yet). virtually yours Gerhard Sittig

Re: Lua on Maemo (Nokia N810 and friends)

Enrico Tassi — 2008-05-14T13:53:21

Compiling recent (cvs) versions of luagtk runs self check tests... They fail on arm, probably because some missing details in the calling convention mechanism, but the expert is Wolfgang, that managed to solve the same issue on amd64 once I gave him access to a test box. Cheers

Re: Lua on Maemo (Nokia N810 and friends)

Fabio Mascarenhas — 2008-05-14T13:29:46

Hi, I thought lua-gtk used libffi? I have an Alien (http://alien.luaforge.net) build running fine on an ARM target (a Linksys NSLU2, running Debian ARM), so if lua-gtk is using libffi it is just a matter of updating (or tweaking a Makefile). I have to download a Maemo VM and play sometimes to see if I can compile the whole Kepler stack (+Alien) in the latest Maemo, anyone know a good one (preferably that works with VirtualBox, as VMPlayer is broken on Ubuntu 8.04)? -- Fabio Mascarenhas On Wed, May 14, 2008 at 8:24 AM, Enrico Tassi libero.it> wrote:

Re: [ANN] Dado 1.0

Tomas Guisasola Gorham — 2008-05-14T13:05:26

Hi Bertrand I've solved the bug and you have to correct your code also (provide a key to the record). Moreover, I am not sure if there is a reasonable way to allow the module to encapsulate the different mechanisms the databases provide to auto-increment table keys in insert. You said that you have some ideas to solve that. Please share your thoughts :-) Regards, Tomás

Re: luaconf.h patch for the Borland/CodeGear compiler

Terry Bayne — 2008-05-14T12:20:02

Thanks for the patch Mike, I've saved it off for later use. I also use the Borland compilers often for just this reason: creation of standalone executables. It makes distribution and installation a snap. While I do agree that shared DLLs save resources, the headaches caused by the versioning of DLLs I can live without. And sometimes it just makes sense. While doing some work with the Blackdog and K9 devices (an embedded linux server with a built in biometric reader for authentication), I had a need for a standalone executable, which at device boot time would be copied from the device to the host PC (and of course removed when the device was unplugged). Not having to also arrange for the copy and deletion of a bunch of support DLLs made this much simpler. The program itself acted as a SOAP server so that the device could send commands (usually Lua scripts to be executed on the host) to the host PC. Terry

Re: Lua on Maemo (Nokia N810 and friends)

Andre Carregal — 2008-05-14T12:07:13

We have been succesfully running Kepler (with Xavante as the web server) on Maemo since the N770 but this is not even close to having a Hildon/GTK bind, for sure. The devices were able to handle more than 20 simultaneous connections while keeping being fully operational for the user. Not that we are suggesting using one for your intranet... :o) The idea is to execute local web applications on Maemo that would sync data with the "external" web application whenever there was such a connection. The user experience (using the browser) should be the same, only the dataset would be subject to changes. But again, this is a totally different use of Lua. I really like the idea of having native application development for Hildon but this is not part of Kepler's roadmap. Another thing to consider would be adding LuaRocks to the SDK toolchain so one could use LuaRocks to build a set of Rocks and then migrate them to the device, where they would be "frozen". André

Re: How to access .bz2 files with lua ?

George Petsagourakis — 2008-05-14T11:52:51

I am using lua-aio installation. Currently: - check urls with sockets lib. - download the file with curl lib. - unbzip with bzip lib. - read the xml with lxp lib. - store in sqlite3 db lib. i did my job and using lua aio was indeed nice...

Re: Lua on Maemo (Nokia N810 and friends)

Enrico Tassi — 2008-05-14T11:24:57

Sounds nice, but someone with an arm device should study the calling conventions on that architecture and provide a fix (as it is already done for amd64) for lua-gtk. Actually the library is unable to use ffi properly on arm (tested on Debian arm and armel build hosts). Cheers

Re: Lua on Maemo (Nokia N810 and friends)

steve donovan — 2008-05-14T11:03:44

What about a (possibly stripped down) version of Wolfgang's lua-gtk? steve d. On Wed, May 14, 2008 at 1:01 PM, noel frankinet skynet.be> wrote:

Re: Lua on Maemo (Nokia N810 and friends)

noel frankinet — 2008-05-14T11:01:37

Gerhard Sittig a écrit : Hello Gerhard, I have done a proprietary binding to windows (button list view, etc). I'm ready to help for a GTK binding if needed. Noël

Lua on Maemo (Nokia N810 and friends)

Gerhard Sittig — 2008-05-14T11:21:16

I'm considering to get me a Nokia N810 and noticed that Lua is not (yet) available for that device (in prepackaged or standalone form, that is). The device runs OS 2008, aka Maemo 4.0, a Linux based system with a GTK based UI. The hardware platform is an XScale processor with quite a lot of RAM (some hundred megabytes) and Flash mass storage (several gigabytes). It has WLAN b/g, BT, USB (no IR?), and builtin GPS. The display is rather huge (800x480 in 4.1") and there's a touch screen as well as a real keyboard. In fact it's quite a heavy yet mobile computing machine, the kind of what we had on our desk a few years ago. Lua seems to not be bundled with the OS. The maemo.org download area does have Python and Ruby, but not Lua. A search on luaforge.net for "maemo", "gtk", "hildon" (the UI framework), "nokia" or "nit" (Nokia coined the "Nokia Internet Tablet" term) doesn't reveal related projects ("nokia" hits for a bit manipulation library since that one supports one of Nokia's formats, it seems). I un

Re: PATCH: fixes bug with calling garbage collector from customlua_Alloc

Bogdan Marinescu — 2008-05-14T10:52:00

By the way, shouldn't your patch be published to http://lua-users.org/wiki/LuaPowerPatches? I don't tknow if there are any special requirements for a patch to be published on that page, but I think this would make it more visible to the Lua community. On Tue, May 13, 2008 at 10:07 AM, Bogdan Marinescu gmail.com> wrote:

Re: Access Lua's last evaluated result from C

Shmuel Zeigerman — 2008-05-14T09:38:59

Why not just make your configuration files Lua files? Lua is traditionally being used for that purpose and does this task extremely well. E.g.: param1 = 3.5 param2 = -0.4 param3 = param2 * 1.5

Re: Access Lua's last evaluated result from C

Peter Cawley — 2008-05-14T09:21:44

I would insist on an explicit 'return' instruction, or course you may decide that the | character can be shorthand for 'return ', and perform that replacement before loading the chunk 2008/5/14 steve donovan gmail.com>:

Re: Access Lua's last evaluated result from C

steve donovan — 2008-05-14T08:59:46

The form of the chunk you actually send to Lua would be 'return param2*1.5', and gets compiled to a function which returns the value. You would of course have to insert the values for 'param2' etc into the global table directly. steve d. On Wed, May 14, 2008 at 10:38 AM, Maggie Webb and Pete Kerr activ8.net.au> wrote:

Access Lua's last evaluated result from C

Maggie Webb and Pete Kerr — 2008-05-14T08:38:00

Hi Is there a clean way I can access, from C, the last value computed by Lua, if it wasn't assigned to a variable? Here's why I want to do it: My C application requires the user to specify parameter values in a file like this param1 3.5 param2 -0.4 I want to extend this by allowing the user to replace the explicit value with some Lua code between dollar signs param3 $ param2*1.5 $ If I send this chunk to Lua, how do I get the value back? If it was MATLAB, say, I'd just fetch the value of variable ans, which always holds the last value computed. I could concatenate "param3=" with "param2*1.5" and fetch the value of param3, but in more complex examples the user might submit a list of statements with the last one evaluating to the required parameter value. e.g. param3 $ lots of code ; required_value $ I could of course insist on: param3 $ lots of code ; param3 = required_value $ Which gives me the easy to read (by a human) list of parameter names down the left, but forces the user

Re: Programming beginners' documentation

Bogdan Marinescu — 2008-05-14T07:21:01

Personally, I think that the executable in the path _should_ be called just 'lua'. If you really need more versions, Python's way is good enough: different directories with different names (named according to the version). At least this is how it happens on Windows, I didn't check other platforms. This way, you always know that when you call 'lua', someone will answer.