Re: 'figures.getinfo()' not to exit ConTeXt

[Hans van der Meer <havdmeer@ziggo.nl>]

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Are you sure that data is not nil here?
 If so, this function returns nil.
dr. Hans van der Meer


> On 6 Dec 2018, at 11:20, Procházka Lukáš Ing. <LPr@pontex.cz> wrote:
> 
> Hello,
> 
> I'm using the following code, mentioned here some time ago, to get some info about PDF:
> 
> ----
> \startluacode
> figures.getinfo = function(name, page)
>    if type(name) == "string" then
>        name = { name = name, page = page }
>    end
>    if name.name then
>        local data = figures.push(name)
> 
>        --figures.identify()
> local ok, res = pcall(figures.identify)
> print(">>1", ok, res)
> 
>        --figures.check()
> local ok, res = pcall(figures.check)
> print(">>2", ok, res)
> 
>        figures.pop()
>        return data
>    end
> end
> 
> local data = figures.getinfo("NonExisting.pdf")
> 
> \stopluacode
> ----
> 
> The problem is that once the PDF file doesn't exist, the function causes ConTeXt to exit, even when I enclose 'figure.check()' into the 'pcall' (to be handled like try/catch mechanism).
> 
> Is there a way so that the function 'figures.getinfo()' does't exit ConTeXt, it just returns 'nil', or even gives info which directories (or even which file types) were searched?
> 
> TIA.
> 
> Best regards,
> 
> Lukas
> 
> 
> -- 
> Ing. Lukáš Procházka | mailto:LPr@pontex.cz
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