Thread: [Cppcms-users] read file and download it

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Dear All

how to read file and put on response().out() as downloaded content?

Thanks

Mawan

just don't

http://cppcms.com/wikipp/en/page/cppcms_1x_serving_static_files

On 03/21/2016 07:56 AM, mawan sugiyanto wrote:
> Dear All 
> 
> how to read file and put on response().out() as downloaded content?
> 
> 
> Thanks 
> 
> 
> Mawan
> 
> 
> ------------------------------------------------------------------------------
> Transform Data into Opportunity.
> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
> Click to learn more.
> http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
> 
> 
> 
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
> 

Thankyou Marcel.

On Wed, Mar 23, 2016 at 6:07 AM, Marcel Hellwig <ke...@co...> wrote:

> just don't
>
> http://cppcms.com/wikipp/en/page/cppcms_1x_serving_static_files
>
> On 03/21/2016 07:56 AM, mawan sugiyanto wrote:
> > Dear All
> >
> > how to read file and put on response().out() as downloaded content?
> >
> >
> > Thanks
> >
> >
> > Mawan
> >
> >
> >
> ------------------------------------------------------------------------------
> > Transform Data into Opportunity.
> > Accelerate data analysis in your applications with
> > Intel Data Analytics Acceleration Library.
> > Click to learn more.
> > http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
> >
> >
> >
> > _______________________________________________
> > Cppcms-users mailing list
> > Cpp...@li...
> > https://lists.sourceforge.net/lists/listinfo/cppcms-users
> >
>
>
>
> ------------------------------------------------------------------------------
> Transform Data into Opportunity.
> Accelerate data analysis in your applications with
> Intel Data Analytics Acceleration Library.
> Click to learn more.
> http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
> _______________________________________________
> Cppcms-users mailing list
> Cpp...@li...
> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>
>

Dear Marcel

the restriction is about file name restriction. and don't about download
mechanism?
for example if i create pdf file on the fly, and read it, and then put on
output response, is it no problem?

Thankyou

On Wed, Mar 23, 2016 at 6:16 PM, mawan sugiyanto <ma...@gm...> wrote:

> Thankyou Marcel.
>
>
>
> On Wed, Mar 23, 2016 at 6:07 AM, Marcel Hellwig <ke...@co...>
> wrote:
>
>> just don't
>>
>> http://cppcms.com/wikipp/en/page/cppcms_1x_serving_static_files
>>
>> On 03/21/2016 07:56 AM, mawan sugiyanto wrote:
>> > Dear All
>> >
>> > how to read file and put on response().out() as downloaded content?
>> >
>> >
>> > Thanks
>> >
>> >
>> > Mawan
>> >
>> >
>> >
>> ------------------------------------------------------------------------------
>> > Transform Data into Opportunity.
>> > Accelerate data analysis in your applications with
>> > Intel Data Analytics Acceleration Library.
>> > Click to learn more.
>> > http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
>> >
>> >
>> >
>> > _______________________________________________
>> > Cppcms-users mailing list
>> > Cpp...@li...
>> > https://lists.sourceforge.net/lists/listinfo/cppcms-users
>> >
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Transform Data into Opportunity.
>> Accelerate data analysis in your applications with
>> Intel Data Analytics Acceleration Library.
>> Click to learn more.
>> http://pubads.g.doubleclick.net/gampad/clk?id=278785351&iu=/4140
>> _______________________________________________
>> Cppcms-users mailing list
>> Cpp...@li...
>> https://lists.sourceforge.net/lists/listinfo/cppcms-users
>>
>>
>

On 03/23/2016 12:22 PM, mawan sugiyanto wrote:
> the restriction is about file name restriction. and don't about download
> mechanism?
> for example if i create pdf file on the fly, and read it, and then put
> on output response, is it no problem?
> 
? I don't get the problem. If you create a PDF
a) with an external application (e.g. latex, pdfcreator, etc.) you could
ether do the trick with the x-sendfile (let your webserver do the job)
b) create the pdf-file in memory (e.g. with a c++ library), then you can
stream the pdf straight out with `response().out() << f.rdbuf();`

You don't have to read it in memory, so there should be no problem