Use date of the tex file in the document

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Cecil Westerhof

24 Mar 2011 24 Mar '11

3:26 a.m.

I would like to use the date of the document in the generated PDF. (It is not interesting when the PDF is generated, but when the source was last changed.) How would I do this? -- Cecil Westerhof

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Philipp Gesang

24 Mar 24 Mar

4:22 a.m.

On 2011-03-24 <10:26:00>, Cecil Westerhof wrote:

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I would like to use the date of the document in the generated PDF. (It is not interesting when the PDF is generated, but when the source was last changed.) How would I do this?

Hi Cecil, this solution checks only the main file, you’d have to extend it if you want it to respect included parts as well. Regards, Philipp PS: Could be optimized but this way the main function allows for lazily adjusting the output …

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-- Cecil Westerhof

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___________________________________________________________________________________ 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 ___________________________________________________________________________________

Cecil Westerhof

4:56 a.m.

2011/3/24 Philipp Gesang

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On 2011-03-24 <10:26:00>, Cecil Westerhof wrote:

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I would like to use the date of the document in the generated PDF. (It is not interesting when the PDF is generated, but when the source was last changed.) How would I do this?

this solution checks only the main file, you’d have to extend it if you want it to respect included parts as well.

For this moment it is good enough. In the future I'll change it to generate different formats. (I'll post it here.) -- Cecil Westerhof

Marco

5 a.m.

On 2011-03-24 Philipp Gesang wrote: This should also work: \starttext \startluacode function modification_date (file) local f = file local attr = lfs.attributes (f) assert (type(attr) == "table") if attr.mode ~= "directory" then return os.date("%Y-%m-%d %H:%M",attr.modification) end end \stopluacode \unexpanded\def\getdate{% \ctxlua{context(modification_date ("\jobname.tex"))}% } \getdate \stoptext Marco

Cecil Westerhof

10:09 a.m.

2011/3/24 Marco

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On 2011-03-24 Philipp Gesang wrote:

This should also work:

\starttext

\startluacode function modification_date (file) local f = file local attr = lfs.attributes (f) assert (type(attr) == "table") if attr.mode ~= "directory" then return os.date("%Y-%m-%d %H:%M",attr.modification) end end \stopluacode

\unexpanded\def\getdate{% \ctxlua{context(modification_date ("\jobname.tex"))}% }

\getdate

\stoptext

I would like to do something like the following: \getdate would return os.date("%Y-%m-%d",attr.modification) and \getdate{"long"} would return os.date("%Y-%m-%d %H:%M",attr.modification) I have looked at lua, but do not see how to do it. (Something else to learn.) -- Cecil Westerhof

Aditya Mahajan

10:12 a.m.

On Thu, 24 Mar 2011, Cecil Westerhof wrote:

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2011/3/24 Marco

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On 2011-03-24 Philipp Gesang wrote:

This should also work:

\starttext

\startluacode function modification_date (file) local f = file local attr = lfs.attributes (f) assert (type(attr) == "table") if attr.mode ~= "directory" then return os.date("%Y-%m-%d %H:%M",attr.modification) end end \stopluacode

\unexpanded\def\getdate{% \ctxlua{context(modification_date ("\jobname.tex"))}% }

\getdate

\stoptext

I would like to do something like the following: \getdate would return os.date("%Y-%m-%d",attr.modification) and \getdate{"long"} would return os.date("%Y-%m-%d %H:%M",attr.modification)

I have looked at lua, but do not see how to do it. (Something else to learn.)

Untested: \def\getdate% {\dosinglegroupempty\dogetdate} \def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}} and then in the lua code function modification_date(file, format) .... if format == "long" then .... else ... end end Aditya

Cecil Westerhof

10:29 a.m.

2011/3/24 Aditya Mahajan

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\getdate would return os.date("%Y-%m-%d",attr.modification)

...
and \getdate{"long"} would return os.date("%Y-%m-%d %H:%M",attr.modification)

I have looked at lua, but do not see how to do it. (Something else to learn.)

I would like to do something like the following:

Untested:

\def\getdate% {\dosinglegroupempty\dogetdate}

\def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}}

and then in the lua code

function modification_date(file, format) .... if format == "long" then .... else ... end

end

I have: \startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f) assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode \def\getdate% {\dosinglegroupempty\dogetdate} \def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}} This results in: contextmodification_date("subversion.tex", "") -- Cecil Westerhof

Wolfgang Schuster

10:33 a.m.

Am 24.03.2011 um 17:29 schrieb Cecil Westerhof:

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\def\getdate% {\dosinglegroupempty\dogetdate}

\def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}}

\def\getdate {\dosingleempty\dogetdate} \def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}} Wolfgang

Cecil Westerhof

11:15 a.m.

2011/3/24 Wolfgang Schuster

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Am 24.03.2011 um 17:29 schrieb Cecil Westerhof:

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\def\getdate% {\dosinglegroupempty\dogetdate}

\def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}}

\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

I have: \startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f) assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode \def\getdate {\dosingleempty\dogetdate} \def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}} \starttext \getdate \stoptext This gives: \dogetdate [#1]->\ctalua {context(modification_date("\jobname .tex", "#1"))} l.29 \getdate[] ? I tried with \getdate, \getdate{} and \getdate[]. -- Cecil Westerhof

Philipp Gesang

11:29 a.m.

On 2011-03-24 <18:15:31>, Cecil Westerhof wrote:

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2011/3/24 Wolfgang Schuster

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Am 24.03.2011 um 17:29 schrieb Cecil Westerhof:

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\def\getdate% {\dosinglegroupempty\dogetdate}

\def\dogetdate#1% {context{modification_date("\jobname.tex", "#1")}}

\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

I have: \startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f)

assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode

\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}} ^ s/\\ctalua/\\ctxlua/

Regards, Philipp

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\starttext

\getdate

\stoptext

This gives: \dogetdate [#1]->\ctalua {context(modification_date("\jobname .tex", "#1"))} l.29 \getdate[]

?

I tried with \getdate, \getdate{} and \getdate[].

-- Cecil Westerhof

...

___________________________________________________________________________________ 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 ___________________________________________________________________________________

Cecil Westerhof

11:42 a.m.

2011/3/24 Philipp Gesang

...

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{\ctalua{context(modification_date("\jobname.tex", "#1"))}}

^ s/\\ctalua/\\ctxlua/

I have: \startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f) assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode \def\getdate {\dosingleempty\dogetdate} \def\dogetdate[#1]% {\ctxlua{context(modification_date("\jobname.tex", "#1"))}} \starttext \getdate \getdate{"short"} \getdate{"long"} \stoptext This gives: 2011-03-24 2011-03-24"short" 2011-03-24"long" -- Cecil Westerhof

Philipp Gesang

11:50 a.m.

On 2011-03-24 <18:42:12>, Cecil Westerhof wrote:

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2011/3/24 Philipp Gesang

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{\ctalua{context(modification_date("\jobname.tex", "#1"))}}

^ s/\\ctalua/\\ctxlua/

I have: \startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f)

assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode

\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctxlua{context(modification_date("\jobname.tex", "#1"))}}

\starttext

\getdate

\getdate{"short"}

\getdate[long] \getdate[nil] \getdate[false] In context optional args are specified in brackets. It’s all documented on the wiki: http://wiki.contextgarden.net/Commands_with_optional_arguments Regards, phg

...

\getdate{"long"}

\stoptext

This gives: 2011-03-24 2011-03-24"short" 2011-03-24"long"

-- Cecil Westerhof

...

___________________________________________________________________________________ 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 ___________________________________________________________________________________

Cecil Westerhof

2:41 p.m.

2011/3/24 Philipp Gesang

...

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\getdate

\getdate{"short"}

\getdate[long] \getdate[nil] \getdate[false]

In context optional args are specified in brackets.

I had tried \getdate["long"], but the quotes where wrong.

...

It’s all documented on the wiki: http://wiki.contextgarden.net/Commands_with_optional_arguments

I'll look into it. Thanks. -- Cecil Westerhof

Cecil Westerhof

5:08 p.m.

2011/3/24 Cecil Westerhof

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\startluacode function modification_date(file, format) local f = file local attr = lfs.attributes(f)

assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then return os.date("%Y-%m-%d %H:%M",attr.modification) else return os.date("%Y-%m-%d",attr.modification) end end end \stopluacode

I made the code a little better: \startluacode os.setlocale("nl_NL") function modification_date(file, format) local f = file local attr = lfs.attributes(f) local fmt = "%d %B %Y" assert (type(attr) == "table") if attr.mode ~= "directory" then if format == "long" then fmt = fmt .. " %H:%M" end return os.date(fmt,attr.modification) end end \stopluacode There is only one problem. I get: 25 March 2011 instead of: 25 maart 2011 What am I doing wrong? -- Cecil Westerhof

Hans Hagen

5:30 p.m.

On 25-3-2011 12:08, Cecil Westerhof wrote:

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I made the code a little better: \startluacode os.setlocale("nl_NL")

blocked in mkiv to prevent unwanted side effects and that will stay

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function modification_date(file, format) local f = file local attr = lfs.attributes(f)

why the f? function modification_date(filename,format) local attr = lfs.attributes(filename) if type(attr) == "table" and attr.mode ~= "directory" then if format == "nice" then return os.date("%Y-%m-%dT%X",attr.modification) .. os.timezone(true) elseif format == "long" then return os.date("%d %B %Y %H:%M",attr.modification) else return os.date("%d %B %Y",attr.modification) end end return "<unset>" end print(modification_date("oeps.lua","nice")) print(modification_date("oeps.lua","long")) ----------------------------------------------------------------- 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 -----------------------------------------------------------------

Philipp Gesang

6:33 p.m.

On 2011-03-25 <00:30:40>, Hans Hagen wrote:

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On 25-3-2011 12:08, Cecil Westerhof wrote:

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I made the code a little better: \startluacode os.setlocale("nl_NL")

blocked in mkiv to prevent unwanted side effects and that will stay

Still, one can access context’s language substitution tables to achieve a quasilocale effect (concerning the month, that is). (-> attachments.) Good night all, Philipp

...

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function modification_date(file, format) local f = file local attr = lfs.attributes(f)

why the f?

function modification_date(filename,format) local attr = lfs.attributes(filename) if type(attr) == "table" and attr.mode ~= "directory" then if format == "nice" then return os.date("%Y-%m-%dT%X",attr.modification) .. os.timezone(true) elseif format == "long" then return os.date("%d %B %Y %H:%M",attr.modification) else return os.date("%d %B %Y",attr.modification) end end return "<unset>" end

print(modification_date("oeps.lua","nice")) print(modification_date("oeps.lua","long"))

----------------------------------------------------------------- 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 ----------------------------------------------------------------- ___________________________________________________________________________________ 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 ___________________________________________________________________________________

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Marco

11:30 a.m.

On 2011-03-24 Cecil Westerhof wrote:

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\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

^^^^^^^ Try \ctxlua … Marco

Hans Hagen

12:35 p.m.

On 24-3-2011 6:30, Marco wrote:

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On 2011-03-24 Cecil Westerhof wrote:

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\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

^^^^^^^ Try \ctxlua …

or \cldcontext{modification_date("\jobname.tex", "#1")} but ... is it clever to define modification_date in the global lua table? just calling lfs.attributes is just as efficient Hans ----------------------------------------------------------------- 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 -----------------------------------------------------------------

Florian Wobbe

11:42 a.m.

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\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

How would you automatically find out the filename which the macro is called from? For instance if the file with the macro is included in a master document. Florian

Aditya Mahajan

11:47 a.m.

On Thu, 24 Mar 2011, Florian Wobbe wrote:

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\def\getdate {\dosingleempty\dogetdate}

\def\dogetdate[#1]% {\ctalua{context(modification_date("\jobname.tex", "#1"))}}

How would you automatically find out the filename which the macro is called from? For instance if the file with the macro is included in a master document.

\inputfilename So, if you want the name of the file in which this macro is defined in, then something like this should work: \edef\thisfilename{\inputfilename} \def.....{...."\thisfilename.tex", ...} Aditya

Florian Wobbe

11:59 a.m.

...

...
How would you automatically find out the filename which the macro is called from? For instance if the file with the macro is included in a master document.

\inputfilename

So, if you want the name of the file in which this macro is defined in, then something like this should work:

\edef\thisfilename{\inputfilename}

\def.....{...."\thisfilename.tex", ...}

Thanks, nice! I suppose the filename is also directly reachable from inside \startluacode ... \stopluacode. How? Florian

Aditya Mahajan

2:49 p.m.

On Thu, 24 Mar 2011, Florian Wobbe wrote:

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...
...
How would you automatically find out the filename which the macro is called from? For instance if the file with the macro is included in a master document.

\inputfilename

So, if you want the name of the file in which this macro is defined in, then something like this should work:

\edef\thisfilename{\inputfilename}

\def.....{...."\thisfilename.tex", ...}

Thanks, nice! I suppose the filename is also directly reachable from inside \startluacode ... \stopluacode. How?

\start-stop luacode expands its contents. So, the following should work (untested) \startluacode thisfilename = "\thisfilename.tex" \stopluacode Aditya

Florian Wobbe

3:43 p.m.

...

...
Thanks, nice! I suppose the filename is also directly reachable from inside \startluacode ... \stopluacode. How?

\start-stop luacode expands its contents. So, the following should work (untested)

\startluacode thisfilename = "\thisfilename.tex" \stopluacode

No, that is not what I meant. I thought why do the detour when the filename is available from the environment of the lua core. I just found it: \inputfilename is defined as \ctxsprint{environment.inputfilename} Florian

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participants (7)

Aditya Mahajan
Cecil Westerhof
Florian Wobbe
Hans Hagen
Marco
Philipp Gesang
Wolfgang Schuster