Hello, a bit surprisingly no response so far.
Does it mean that no such a function exists? If so, are there any Lua tables which provide list of current searching paths and list of image extensions which ConTeXt handles? (In both cases: in the place of use, as e.g. list of paths may change during use of \(setup)externalfigure(s) at various places in the source document.) Joseph mentioned 'figures.path' for paths; is there something similar for valid image extensions (like figures.extensions')? If not, would it be possible to provide something like this? - Just to explain: I need to perform some ops before inserting an image via \externalfigure. And I would need to be able to locate the file to be inserted, even when the picture is inserted by just a file name (with no path) with path specified before by \setupexternalfigures. Best regards, Lukas On Tue, 21 Mar 2017 08:50:18 +0100, Procházka Lukáš Ing. <l...@pontex.cz> wrote:
Hello Joseph, thank you for reaction. I guess: - "figures.path' is a ConTeXt variable, is it? - There are more extensions possible, not only .pdf. So how to access other extensions Ctx is to manage? - I guess that 'lpdf.epdf.load(figure_file)' is just a .pdf loader - how to load other pics (like .png, .jpg, .svg...)? Best regards, Lukas On Mon, 20 Mar 2017 09:34:19 +0100, <josephcan...@gmail.com> wrote:Hi, Personally I use the lua variable named : figures.path It’s a lua table which contains directories names you provide in directory= in \setupexternalfigures: for _, path in ipairs(figures.paths) do local figure_file = path .. '/' .. file local doc = lpdf.epdf.load(figure_file) -- assume pdf (just an example) if doc then …. end done There are perhaps helper functions as well. Joseph De : Procházka Lukáš Ing. Envoyé le :lundi 20 mars 2017 09:27 À : ConTeXt Objet :[NTG-context] \externalfigure locator Hello, is there a Lua version of external figure locator used by \externalfigure? Suppose having: ---- \setupexternalfigures[location={default,local,global},directory={../../Pics}] \externalfigure[mill] % Finds e.g. in d:\Ctx-Beta\tex\texmf-context\tex\context\sample\common\mill.png \externalfigure[MyPrettyPicture.jpg] % Finds e.g. in c:\Lukas\Pics\MyPrettyPicture.jpg ---- And I need a function like: ---- \startluacode local path path = assert(ExternalFileLocator("mill") == "d:/Ctx-Beta/tex/texmf-context/tex/context/sample/common/mill.png") path = assert(ExternalFileLocator("MyPrettyPicture.jpg") == "c:/Lukas/Pics/MyPrettyPicture.jpg") \stopluacode ---- So what to use in place of "ExternalFileLocator()"? TIA. Best regards, Lukas
-- Ing. Lukáš Procházka | mailto:l...@pontex.cz Pontex s. r. o. | mailto:pon...@pontex.cz | http://www.pontex.cz | IDDS:nrpt3sn Bezová 1658 147 14 Praha 4 Tel: +420 241 096 751 (+420 720 951 172) 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://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net ___________________________________________________________________________________
