Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Thanx Wolfgang.
It is a good example, which I will definitely come in handy sometimes,
but unfortunately I can not help my problem to solve.
Once again, many thanks
Jaroslav
Dne 17.7.2011 15:40, Wolfgang Schuster napsal(a):
You can’t expand macro from Lua but the following is possible:
\startluacode
values = {
I = "1",
II = "2",
}
function test(arg)
if string.find(arg,"\\macro") then
arg = string.gsub(arg,"\\macro","")
if values[arg] then
context(values[arg])
else
context("Invalid index.")
end
else
context("Invalid command.")
end
end
\stopluacode
\starttext
\starttabulate
\NC \type{\macroI} \EQ \ctxlua{test("\\macroI")} \NC\NR
\NC \type{\macroII} \EQ \ctxlua{test("\\macroII")} \NC\NR
\NC \type{\macroIII} \EQ \ctxlua{test("\\macroIII")} \NC\NR
\NC \type{\foo} \EQ \ctxlua{test("\\foo")} \NC\NR
\stoptabulate
\stoptext
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Am 17.07.2011 um 15:10 schrieb Jaroslav Hajtmar:
> then it's not for me very good news, because I thus probably not my module to
> process only at the Lua language ...
You can’t expand macro from Lua but the following is possible:
\startluacode
values = {
I = "1",
II = "2",
}
function test(arg)
if string.find(arg,"\\macro") then
arg = string.gsub(arg,"\\macro","")
if values[arg] then
context(values[arg])
else
context("Invalid index.")
end
else
context("Invalid command.")
end
end
\stopluacode
\starttext
\starttabulate
\NC \type{\macroI} \EQ \ctxlua{test("\\macroI")} \NC\NR
\NC \type{\macroII} \EQ \ctxlua{test("\\macroII")} \NC\NR
\NC \type{\macroIII} \EQ \ctxlua{test("\\macroIII")} \NC\NR
\NC \type{\foo} \EQ \ctxlua{test("\\foo")} \NC\NR
\stoptabulate
\stoptext
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Wolfgang,
Me too. This is because the parameter '\macroI' is evaluated as a
number, but the parameter '\\macroI' is in fact really a string - the
name of a context macro. context (...) command properly put correctly
content of the '\macroI' macro into the ConTeXt, but without knowledge
of his contents ...
If you write that:
Not possible.
then it's not for me very good news, because I thus probably not my
module to process only at the Lua language ...
Thanx Jaroslav...
Dne 17.7.2011 14:53, Wolfgang Schuster napsal(a):
Am 17.07.2011 um 14:42 schrieb Jaroslav Hajtmar:
Thanx Wolfgang.
But I guess I was wrong to express..
I need to pass parameter '\\macroI' to the function and turn it up a inside
luafunction expand to its value.
Not possible.
Ie when \def\macroI{6}
Then I need when I make in your example \ctxlua{test("\\macroI")} get the
result :
"The argument “6” is a positive number" and not result "The argument “6” is a
string."
That’s odd because for me
\ctxlua{test("\macroI")}
results in
The argument “6” is a positive number.
and
\ctxlua{test("\\macroI")}
in
The argument “6” is a string.
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Am 17.07.2011 um 14:42 schrieb Jaroslav Hajtmar:
> Thanx Wolfgang.
> But I guess I was wrong to express..
>
> I need to pass parameter '\\macroI' to the function and turn it up a inside
> luafunction expand to its value.
Not possible.
> Ie when \def\macroI{6}
>
> Then I need when I make in your example \ctxlua{test("\\macroI")} get the
> result :
> "The argument “6” is a positive number" and not result "The argument “6” is a
> string."
That’s odd because for me
\ctxlua{test("\macroI")}
results in
The argument “6” is a positive number.
and
\ctxlua{test("\\macroI")}
in
The argument “6” is a string.
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Thanx Wolfgang.
But I guess I was wrong to express..
I need to pass parameter '\\macroI' to the function and turn it up a
inside luafunction expand to its value.
Ie when \def\macroI{6}
Then I need when I make in your example \ctxlua{test("\\macroI")} get
the result :
"The argument “6” is a positive number" and not result "The argument “6”
is a string."
see: I modify your example :
\startluacode
function test(arg) -- use thirddata namespace for real functions
if type(tonumber(arg)) == "number" then
if tonumber(arg) > 0 then
context("The argument \\quotation{%s} is a positive
number",arg)
else
context("The argument \\quotation{%s} is a negative
number",arg)
end
else
context("The argument \\quotation{%s} is a string.",arg)
end
end
\stopluacode
\starttext
\ctxlua{test("7")}
\ctxlua{test("-4")}
\ctxlua{test("text")}
\def\macroI{6}
\ctxlua{test("\macroI")}
\ctxlua{test("\\macroI")}
\stoptext
Dne 17.7.2011 14:19, Wolfgang Schuster napsal(a):
Am 17.07.2011 um 14:01 schrieb Jaroslav Hajtmar:
> Hello all,
>
> For several hours trying to find solutions of problem.
>
> My minimal example (I mention it at the end of email) for clear reasons show, that :
>
> 7 is not number.
> 7 is number.
> 7is not number.
> 7is not number.
>
> In the first is argument '\value' negotiable to the value, in second it is not possible (but for clear reasons too).
>
> I would need to find from argument ie macro '\\value' in the LUA function its numerical value.
> Is there any function that would do that?
>
> I need something as a function of context (...), which would, however, its output is not located into ConTeXt, but its result get to back to a Lua function or into variable.
> It is something like the expansion of an existing ConTeXt macro to its value.
\startluacode
function test(arg) -- use thirddata namespace for real functions
if type(tonumber(arg)) == "number" then
if tonumber(arg)> 0 then
context("The argument \\quotation{%s} is a positive
number",arg)
else
context("The argument \\quotation{%s} is a negative
number",arg)
end
else
context("The argument \\quotation{%s} is a string.",arg)
end
end
\stopluacode
\starttext
\ctxlua{test("7")}
\ctxlua{test("-4")}
\ctxlua{test("text")}
\stoptext
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
Re: [NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Am 17.07.2011 um 14:01 schrieb Jaroslav Hajtmar:
> Hello all,
>
> For several hours trying to find solutions of problem.
>
> My minimal example (I mention it at the end of email) for clear reasons
> show, that :
>
> 7 is not number.
> 7 is number.
> 7is not number.
> 7is not number.
>
> In the first is argument '\value' negotiable to the value, in second it is
> not possible (but for clear reasons too).
>
> I would need to find from argument ie macro '\\value' in the LUA function
> its numerical value.
> Is there any function that would do that?
>
> I need something as a function of context (...), which would, however, its
> output is not located into ConTeXt, but its result get to back to a Lua
> function or into variable.
> It is something like the expansion of an existing ConTeXt macro to its value.
\startluacode
function test(arg) -- use thirddata namespace for real functions
if type(tonumber(arg)) == "number" then
if tonumber(arg) > 0 then
context("The argument \\quotation{%s} is a positive
number",arg)
else
context("The argument \\quotation{%s} is a negative
number",arg)
end
else
context("The argument \\quotation{%s} is a string.",arg)
end
end
\stopluacode
\starttext
\ctxlua{test("7")}
\ctxlua{test("-4")}
\ctxlua{test("text")}
\stoptext
Wolfgang
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
[NTG-context] Finding values of the context macros inside Lua functions (=expansion inside Lua functions?)
Hello all,
For several hours trying to find solutions of problem.
My minimal example (I mention it at the end of email) for clear reasons
show, that :
7 is not number.
7 is number.
7is not number.
7is not number.
In the first is argument '\value' negotiable to the value, in second it
is not possible (but for clear reasons too).
I would need to find from argument ie macro '\\value' in the LUA
function its numerical value.
Is there any function that would do that?
I need something as a function of context (...), which would, however,
its output is not located into ConTeXt, but its result get to back to a
Lua function or into variable.
It is something like the expansion of an existing ConTeXt macro to its
value.
Thanx Jaroslav
Here is my minimal example:
\startluacode
function test(arg)
if type(arg)=='number' then
context(arg.." is number.\\par ")
else
context(arg.." is not number.\\par")
end
if type(tonumber(arg))=='number' then
context(arg.." is number.\\par ")
else
context(arg.." is not number.\\par")
end
end
\stopluacode
\starttext
\def\value{7}
\ctxlua{test('\value');}
\blank[big]
\ctxlua{test('\\value');}
\stoptext
___
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://tex.aanhet.net
archive : http://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___
