Passing and retrieveing a variable

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Re: [NTG-context] How to invoke...

Procházka Lukáš

5 Jan 2011 5 Jan '11

8:22 p.m.

Hello, I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua. Something like modes; but modes allow just to check whether they are on or off. I'd need something like this: Calling context.exe: --- call context.exe test.mkiv --mode:MyMode --variable MyVariable=AAA --- And test.mkiv: --- \starttext Hello \doifmode{MyMode}{Being in MyMode} \ifvariableequal{MyVariable}{AAA}{MyVariable is \MyVariable} % Something like this \startluacode if context.variables.MyVariable == "AAA" then context("MyVariable is defined.") -- Something like this end \stopluacode \stoptext --- Simply said, I'd need to provide a conditional (or: dependent) compilation of the input file. How to handle this? Best regards, Lukas

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pmlists＠free.fr

5 Jan 5 Jan

9:11 p.m.

Procházka Lukáš writes:

...

I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua.

Hello, % cmd-line: context --arguments=testvar=my-value test \starttext value of testvar: \env{testvar} with lua: \ctxlua{tex.print(document.arguments.arguments)} \stoptext There is perhaps a nicer solution in lua. Peter -- Contact information: http://pmrb.free.fr/contact/

Procházka Lukáš Ing. - Pontex s. r. o.

7 Jan 7 Jan

9:32 a.m.

Hello, I created a testing file which tests existence and type of (tex|context|document).(modes|arguments|variables) by Lua - see the attachments. It seems that: - Modes are accessible by tex.modes[<a-mode>]. - - tex.modes are 'false' by default. I.e. they are not 'nil' but 'false', even if not specified on the command line. (tex.mode.__newindex predefined to this purpose?) - There is no table of arguments or variables being passed by --arguments="ARG=arg" or by --variable="VAR=var" from the command line. - All arguments passed to the command line are accessible by document.arguments. Unfortunately, when repeating an arg, only the last is accessible, e.g. context.exe t.mkiv --arguments="ARG1=arg1" --arguments="ARG2=arg2" will cause that only (string) "ARG2=arg2" will be in document.arguments.arguments. - - That means also that not splitting to key-value pair is not performed by default (document.arguments.arguments is still "ARG2=arg2", no splitting to document.arguments.arguments.ARG2 to be "arg2" is not done). - Not only predefined options/switches, but all args passed by command line are accessible by document.arguments. I.e. it's possible to call context.exe t.mkiv --myvar=MYVAR and later it's possible to get "MYVAR" from document.arguments.myvar. Let's check the call: context.exe t.mkiv --arguments=AAA=aaa --mode=MMM --arguments=BBB=bbb --myvar=MYVAR Best regards, Lukas On Wed, 05 Jan 2011 21:11:51 +0100, Peter Münster wrote:

...

Procházka Lukáš writes:

...
I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua.

Hello,

% cmd-line: context --arguments=testvar=my-value test \starttext value of testvar: \env{testvar}

with lua: \ctxlua{tex.print(document.arguments.arguments)} \stoptext

There is perhaps a nicer solution in lua.

Peter

-- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

luigi scarso

9:48 a.m.

2011/1/7 Procházka Lukáš Ing. - Pontex s. r. o. :

...

Hello,

I created a testing file which tests existence and type of (tex|context|document).(modes|arguments|variables) by Lua - see the attachments.

It seems that:

- Modes are accessible by tex.modes[<a-mode>].

- - tex.modes are 'false' by default. I.e. they are not 'nil' but 'false', even if not specified on the command line. (tex.mode.__newindex predefined to this purpose?)

- There is no table of arguments or variables being passed by --arguments="ARG=arg" or by --variable="VAR=var" from the command line.

- All arguments passed to the command line are accessible by document.arguments. Unfortunately, when repeating an arg, only the last is accessible, e.g.

context.exe t.mkiv --arguments="ARG1=arg1" --arguments="ARG2=arg2"

will cause that only (string) "ARG2=arg2" will be in document.arguments.arguments.

- - That means also that not splitting to key-value pair is not performed by default (document.arguments.arguments is still "ARG2=arg2", no splitting to document.arguments.arguments.ARG2 to be "arg2" is not done).

- Not only predefined options/switches, but all args passed by command line are accessible by document.arguments. I.e. it's possible to call

context.exe t.mkiv --myvar=MYVAR

and later it's possible to get "MYVAR" from document.arguments.myvar.

Let's check the call:

context.exe t.mkiv --arguments=AAA=aaa --mode=MMM --arguments=BBB=bbb --myvar=MYVAR

Best regards,

Lukas

On Wed, 05 Jan 2011 21:11:51 +0100, Peter Münster wrote:

...
Procházka Lukáš writes:

...
I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua.

Hello,

% cmd-line: context --arguments=testvar=my-value test \starttext value of testvar: \env{testvar}

with lua: \ctxlua{tex.print(document.arguments.arguments)} \stoptext

There is perhaps a nicer solution in lua.

Peter

-- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4

Tel: +420 244 062 238 Fax: +420 244 461 038 ___________________________________________________________________________________ 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 ___________________________________________________________________________________

Maybe Data Description can here here http://www.lua.org/pil/10.1.html -- luigi

pmlists＠free.fr

10:15 a.m.

Procházka Lukáš Ing. - Pontex s. r. o. writes:

...

context.exe t.mkiv --arguments="ARG1=arg1" --arguments="ARG2=arg2"

It's supposed to be --arguments="ARG1=arg1,ARG2=arg2" Peter

Hans Hagen

10:58 p.m.

On 7-1-2011 9:32, Procházka Lukáš Ing. - Pontex s. r. o. wrote:

...

- Modes are accessible by tex.modes[<a-mode>].

indeed

...

- - tex.modes are 'false' by default. I.e. they are not 'nil' but 'false', even if not specified on the command line. (tex.mode.__newindex predefined to this purpose?)

indeed

...

- There is no table of arguments or variables being passed by --arguments="ARG=arg" or by --variable="VAR=var" from the command line.

indeed (--arguments is an old mechanism and mkii compatible)

...

- All arguments passed to the command line are accessible by document.arguments. Unfortunately, when repeating an arg, only the last is accessible, e.g.

context.exe t.mkiv --arguments="ARG1=arg1" --arguments="ARG2=arg2"

indeed, so one can easily overload

...

will cause that only (string) "ARG2=arg2" will be in document.arguments.arguments.

as mentioned by someone already, use "a=1,b=2,c=3"

...

- - That means also that not splitting to key-value pair is not performed by default (document.arguments.arguments is still "ARG2=arg2", no splitting to document.arguments.arguments.ARG2 to be "arg2" is not done).

indeed, although they are split and assigned at the tex end

...

- Not only predefined options/switches, but all args passed by command line are accessible by document.arguments. I.e. it's possible to call

context.exe t.mkiv --myvar=MYVAR

right, but make sure to use a prefix so that there is no confusion (myvarone myvartwo etc)

...

and later it's possible to get "MYVAR" from document.arguments.myvar.

Let's check the call:

context.exe t.mkiv --arguments=AAA=aaa --mode=MMM --arguments=BBB=bbb --myvar=MYVAR

Procházka Lukáš

8 Jan 8 Jan

7:12 p.m.

Hello, thanks for detailing the observation - On Fri, 07 Jan 2011 22:58:24 +0100, Hans Hagen wrote:

...

On 7-1-2011 9:32, Procházka Lukáš Ing. - Pontex s. r. o. wrote:

...
- Modes are accessible by tex.modes[<a-mode>].

indeed

...
- - tex.modes are 'false' by default. I.e. they are not 'nil' but 'false', even if not specified on the command line. (tex.mode.__newindex predefined to this purpose?)

indeed

...
- There is no table of arguments or variables being passed by --arguments="ARG=arg" or by --variable="VAR=var" from the command line.

indeed (--arguments is an old mechanism and mkii compatible)

...
- All arguments passed to the command line are accessible by document.arguments. Unfortunately, when repeating an arg, only the last is accessible, e.g.

context.exe t.mkiv --arguments="ARG1=arg1" --arguments="ARG2=arg2"

indeed, so one can easily overload

You're right, good feature.

...

...
will cause that only (string) "ARG2=arg2" will be in document.arguments.arguments.

as mentioned by someone already, use "a=1,b=2,c=3"

...
- - That means also that not splitting to key-value pair is not performed by default (document.arguments.arguments is still "ARG2=arg2", no splitting to document.arguments.arguments.ARG2 to be "arg2" is not done).

indeed, although they are split and assigned at the tex end

So, an earlier splitting may be performed by something like for a in document.arguments:gmatch("([^,]+)") do local k, v = a:match("(.*)=(.*)") document.arguments[k] = v end Best regards, Lukas

...

...
- Not only predefined options/switches, but all args passed by command line are accessible by document.arguments. I.e. it's possible to call

context.exe t.mkiv --myvar=MYVAR

right, but make sure to use a prefix so that there is no confusion (myvarone myvartwo etc)

...
and later it's possible to get "MYVAR" from document.arguments.myvar.

Let's check the call:

context.exe t.mkiv --arguments=AAA=aaa --mode=MMM --arguments=BBB=bbb --myvar=MYVAR

Hans

Hans Hagen

9 Jan 9 Jan

10:03 p.m.

On 8-1-2011 7:12, Procházka Lukáš wrote:

...

So, an earlier splitting may be performed by something like

for a in document.arguments:gmatch("([^,]+)") do local k, v = a:match("(.*)=(.*)")

document.arguments[k] = v end

utilities.parsers.settings_to_hash( document.arguments.arg or "", document.arguments ) ----------------------------------------------------------------- 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 -----------------------------------------------------------------

Wolfgang Schuster

5 Jan 5 Jan

9:41 p.m.

Am 05.01.2011 um 20:22 schrieb Procházka Lukáš:

...

Hello,

I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua. Something like modes; but modes allow just to check whether they are on or off. I'd need something like this:

You can check modes in Lua: context --arguments="size=small" --mode=print test.tex \starttext Print mode: \doifmodeelse{print}{yes}{no} \startluacode if tex.modes['print'] then context("Print mode is enabled") else context("Print mode is disabled") end \stopluacode \doifenvelse{size} {\processaction [\env{size}] [ small=>Small size, medium=>Medium size, big=>Big size, unknown=>Other size: \env{size}]} {No value “size”} \stoptext Wolfgang

Procházka Lukáš Ing. - Pontex s. r. o.

6 Jan 6 Jan

8:39 a.m.

Hello, thanks, - On Wed, 05 Jan 2011 21:41:13 +0100, Wolfgang Schuster wrote:

...

Am 05.01.2011 um 20:22 schrieb Procházka Lukáš:

...
Hello,

I'd need to pass a variable to Ctx and to retrieve it inside a compiled document - via Ctx itself and also by Lua. Something like modes; but modes allow just to check whether they are on or off. I'd need something like this:

You can check modes in Lua:

context --arguments="size=small" --mode=print test.tex

And can I check a variable (argument) in Lua in a similar way? --- \starttext Print mode: \doifmodeelse{print}{yes}{no} \startluacode if tex.modes['print'] then context("Print mode is enabled") else context("Print mode is disabled") end -- Something like this: >> if tex.arguments['size'] == "small" then -- Or: 'tex.variables["size"] == "small"' -- Or: 'document.arguments["size"] == "small"' context("Small size") end -- \stopluacode \doifenvelse{size} {\processaction [\env{size}] [ small=>Small size, medium=>Medium size, big=>Big size, unknown=>Other size: \env{size}]} {No value “size”} \stoptext --- If the passed argument has a NUMBER value, should it be checked against a number value or a string - so what of the following should be right: context --arguments="size=1" test.tex if tex.arguments['size'] == "1" then ... Or: if tex.arguments['size'] == 1 then ... Best regards, Lukas -- Ing. Lukáš Procházka [mailto:LPr@pontex.cz] Pontex s. r. o. [mailto:pontex@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038

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Hans Hagen
luigi scarso
pmlists＠free.fr
Procházka Lukáš
Procházka Lukáš Ing. - Pontex s. r. o.
Wolfgang Schuster

Passing and retrieveing a variable

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