Hello,
I need to identify number of pages by Lua of an image which is to be inserted.
The image can be of all various types supported by Ctx - e.g. .png, .pdf.
I've been using the following code so far (based on a mailing thread in the
past):
----
function nOfPages(fn)
local fig = figures.push{name = fn}
local info = figures.identify()
figures.check()
local n = fig.used.pages
figures.pop()
return n
end
----
But the code above break Ctx in the case that the image doesn't exist.
I'd need to modify the solution somehow so to return 'nil' or 'false' (or a
error message) in the case the file was not found.
How to do it?
TIA.
Best regards,
Lukas
(NB: Still "ConTeXt ver: 2012.11.26 13:31 MKIV fmt: 2012.11.27 int:
english/english".)
--
Ing. Lukáš Procházka [mailto:l...@pontex.cz]
Pontex s. r. o. [mailto:pon...@pontex.cz] [http://www.pontex.cz]
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