date calculated with currentdate plus n days

date calculated with currentdate plus n days

[Jan U. Hasecke]

Hi all,

I want to insert a due date for payments in my invoice and I would like
to calculate it from \currentdate. Something like

define \duedate = \currentdate plus 10 days

Is this possible?

juh
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Re: date calculated with currentdate plus n days

[Pablo Rodriguez]

On 08/13/2018 05:19 PM, Jan U. Hasecke wrote:
> Hi all,
> 
> I want to insert a due date for payments in my invoice and I would like
> to calculate it from \currentdate. Something like
> 
> define \duedate = \currentdate plus 10 days
> 
> Is this possible?

Hi Jan-Ulrich,

if you don’t mind using Lua, here you have it:

    \starttext
    \def\duedate{\cldcontext{os.date('\letterpercent d/\letterpercent
        m/\letterpercent Y', os.time()+ 10 * 24 * 3600)}}

    \duedate
    \stoptext

Just in case it helps,

Pablo
-- 
http://www.ousia.tk
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Re: date calculated with currentdate plus n days

[Jan U. Hasecke]

On 13.08.2018 17:57, Pablo Rodriguez wrote:

> if you don’t mind using Lua, here you have it:
> 
>     \starttext
>     \def\duedate{\cldcontext{os.date('\letterpercent d/\letterpercent
>         m/\letterpercent Y', os.time()+ 10 * 24 * 3600)}}
> 
>     \duedate
>     \stoptext
> 
> Just in case it helps,

Thanks!

I thought it should be possible with lua, but I found no entry point to
use lua in context by defining new commands.

juh



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Re: date calculated with currentdate plus n days

[Henri Menke]

On top of that I recommend to use context.date to get the correct 
formatting according to the current language options:

\starttext

\def\duedate{\ctxlua{
   local t = os.date('*t', os.time()+ 10 * 24 * 3600)
   context.date{ d = t.day, m = t.month, y = t.year }
}}

\duedate

\stoptext

On 14/08/18 05:37, Jan U. Hasecke wrote:
> On 13.08.2018 17:57, Pablo Rodriguez wrote:
> 
>> if you don’t mind using Lua, here you have it:
>>
>>      \starttext
>>      \def\duedate{\cldcontext{os.date('\letterpercent d/\letterpercent
>>          m/\letterpercent Y', os.time()+ 10 * 24 * 3600)}}
>>
>>      \duedate
>>      \stoptext
>>
>> Just in case it helps,
> 
> Thanks!
> 
> I thought it should be possible with lua, but I found no entry point to
> use lua in context by defining new commands.
> 
> juh
> 
> 
> 
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 
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___________________________________________________________________________________

Re: date calculated with currentdate plus n days

[Pablo Rodriguez]

On 08/14/2018 01:46 AM, Henri Menke wrote:
> On top of that I recommend to use context.date to get the correct 
> formatting according to the current language options:
> 
> \def\duedate{\ctxlua{
>    local t = os.date('*t', os.time()+ 10 * 24 * 3600)
>    context.date{ d = t.day, m = t.month, y = t.year }
> }}

Many thanks for your reply, Henri.

Where are those context.* Lua commands documented?

I want to generate an xtable using Lua code, but I don’t know where to read.

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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Re: date calculated with currentdate plus n days

[Henri Menke]

On 14/08/18 17:29, Pablo Rodriguez wrote:
> On 08/14/2018 01:46 AM, Henri Menke wrote:
>> On top of that I recommend to use context.date to get the correct
>> formatting according to the current language options:
>>
>> \def\duedate{\ctxlua{
>>     local t = os.date('*t', os.time()+ 10 * 24 * 3600)
>>     context.date{ d = t.day, m = t.month, y = t.year }
>> }}
> 
> Many thanks for your reply, Henri.
> 
> Where are those context.* Lua commands documented?
> 
> I want to generate an xtable using Lua code, but I don’t know where to read.

They aren't documented because they are just the context commands.  You 
can read more about how it works in 
http://www.pragma-ade.nl/general/manuals/cld-mkiv.pdf

Here a little sample with an xtable:

\starttext

\startluacode
local function duedate()
     local t = os.date('*t', os.time()+ 10 * 24 * 3600)
     context.date{ d = t.day, m = t.month, y = t.year }
end

context.startxtable{frame = "off"}
    context.NC() context("Note") context.NC() context("Date") context.NR()
    context.NC() context("Hand in before") context.NC() duedate() 
context.NR()
context.stopxtable()
\stopluacode

\stoptext

> 
> Many thanks for your help,
> 
> Pablo
> 
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Re: date calculated with currentdate plus n days

[Pablo Rodriguez]

On 08/14/2018 09:24 AM, Henri Menke wrote:
> On 14/08/18 17:29, Pablo Rodriguez wrote:
>> [...]
>> Where are those context.* Lua commands documented?
>>
>> I want to generate an xtable using Lua code, but I don’t know where to read.
> 
> They aren't documented because they are just the context commands.  You 
> can read more about how it works in 
> http://www.pragma-ade.nl/general/manuals/cld-mkiv.pdf

Many thanks for your reply, Henri.

I remember paging through the manual, it’s included in the distribution.

I rewrote your sample as (xtables are the only tables I know in ConTeXt):

    \starttext
    \startlua
    context.startxtable()
        context.startxrow()
         context.startxcell()
          context("Note 1")
         context.stopxcell()
         context.startxcell()
          context("Note 2")
         context.stopxcell()
        context.stopxrow()
        context.startxrow()
         context.startxcell()
          context("Note 3")
         context.stopxcell()
         context.startxcell()
          context("Note 4")
         context.stopxcell()
        context.stopxrow()
    context.stopxtable()
    \stoplua
    \stoptext

Many thanks for your help,

Pablo
-- 
http://www.ousia.tk
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___________________________________________________________________________________

Use of context in lua (was: date calculated with currentdate plus n days)

[Jan U. Hasecke]

On 14.08.2018 16:58, Pablo Rodriguez wrote:
> I rewrote your sample as (xtables are the only tables I know in ConTeXt):
> 
>     \starttext
>     \startlua
>     context.startxtable()
>         context.startxrow()
>          context.startxcell()
>           context("Note 1")
>          context.stopxcell()
>          context.startxcell()
>           context("Note 2")
>          context.stopxcell()
>         context.stopxrow()
>         context.startxrow()
>          context.startxcell()
>           context("Note 3")
>          context.stopxcell()
>          context.startxcell()
>           context("Note 4")
>          context.stopxcell()
>         context.stopxrow()
>     context.stopxtable()
>     \stoplua
>     \stoptext

Seeing this example I wonder if there is already an example taking a
csv-file and creating a table based on its content. I guess building
blocks are readfile, loops and setting the stop sign (; oder ,).

As I know a bit of Python, at least, I might be able to search for the
building blocks in the doku. ;-)

juh
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___________________________________________________________________________________

Re: Use of context in lua

[Henri Menke]

On 15/08/18 17:46, Jan U. Hasecke wrote:
> On 14.08.2018 16:58, Pablo Rodriguez wrote:
>> I rewrote your sample as (xtables are the only tables I know in ConTeXt):
>>
>>      \starttext
>>      \startlua
>>      context.startxtable()
>>          context.startxrow()
>>           context.startxcell()
>>            context("Note 1")
>>           context.stopxcell()
>>           context.startxcell()
>>            context("Note 2")
>>           context.stopxcell()
>>          context.stopxrow()
>>          context.startxrow()
>>           context.startxcell()
>>            context("Note 3")
>>           context.stopxcell()
>>           context.startxcell()
>>            context("Note 4")
>>           context.stopxcell()
>>          context.stopxrow()
>>      context.stopxtable()
>>      \stoplua
>>      \stoptext
> 
> Seeing this example I wonder if there is already an example taking a
> csv-file and creating a table based on its content. I guess building
> blocks are readfile, loops and setting the stop sign (; oder ,).

It already exists:
- Database module
   http://wiki.contextgarden.net/M-database
- handlecsv module
 
https://modules.contextgarden.net/cgi-bin/module.cgi/ruid=55907888/action=view/id=86

> 
> As I know a bit of Python, at least, I might be able to search for the
> building blocks in the doku. ;-)
> 
> juh
> ___________________________________________________________________________________
> If your question is of interest to others as well, please add an entry to the Wiki!
> 
> maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage  : http://www.pragma-ade.nl / http://context.aanhet.net
> archive  : https://bitbucket.org/phg/context-mirror/commits/
> wiki     : http://contextgarden.net
> ___________________________________________________________________________________
> 
___________________________________________________________________________________
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