Re: ILE C++ standards

Mihael,

Does it have to be URI Templating...for the current project no..

However, in a past project (that was interacting with a web service), URI
Templates were being sent back...we ended up with just a quick & dirty RPG
solution that met the simply requirements of that project.

Thus based upon past, current, and future needs...I'd really like something
that handles the RFC 6570 specs..

Charles

On Mon, Jul 13, 2020 at 10:33 AM Mihael Schmidt <mihael-AJkadKwRYCg6GGFevw1D/[email protected]>
wrote:

> @Charles Any reason it must be URL Templating? I once wrote a little
> template engine in RPG which worked more like the Apache Velocity Engine
> (with various template loaders etc). Though I think you only need a
> little in-memory template engine.
>
> Some example code of mine. It filled the command string to create a
> physical file:
>
> **FREE
>
> ctl-opt dftactgrp(*no) actgrp(*caller) bnddir('TEMPLATE/TEMPLATE');
>
>
> main();
> *inlr = *on;
>
>
> dcl-proc main;
>    dcl-s command char(1000);
>    dcl-s abnormallyEnded ind;
>    dcl-s mergedCommand varchar(1000);
>    dcl-s templateLoader pointer;
>    dcl-s context pointer;
>    dcl-s engine pointer;
>    dcl-s mergedContentPtr pointer;
>    dcl-s info char(50);
>
>    command = 'CRTPF FILE(${object_library}/${object_name}) ' +
>                'SRCFILE(${source_library}/${source_file}) ' +
>                'SRCMBR(${source_member})' + x'00';
>
>    templateLoader = template_loader_memory_create(%addr(command));
>
>    context = template_context_create();
>    template_context_addCharValue(context :
> 'object_library':%trimr(destlibrary));
>    template_context_addCharValue(context : 'object_name' : %trimr(member));
>    template_context_addCharValue(context : 'source_library' :
> %trimr(library));
>    template_context_addCharValue(context : 'source_file' : %trimr(file));
>    template_context_addCharValue(context : 'source_member' :
> %trimr(member));
>    template_context_addCharValue(context : 'source_member_type' :
> %trimr(type));
>
>    engine = template_engine_create();
>    template_engine_addTemplateLoader(engine : templateLoader);
>    mergedContentPtr = template_engine_merge(engine : context : '*local');
>    if (mergedContentPtr <> *null);
>      mergedCommand = %str(mergedContentPtr);
>      info = mergedCommand;
>      dsply info;
>    else;
>      dsply 'no merged content';
>    endif;
>
>    on-exit abnormallyEnded;
>      if (engine <> *null);
>        template_engine_finalize(engine);
>      endif;
>      if (context <> *null);
>        template_context_finalize(context);
>      endif;
>      if (templateLoader <> *null);
>        template_loader_finalize(templateLoader);
>      endif;
>      if (mergedContentPtr <> *null);
>        template_memory_deallocate(mergedContentPtr);
>      endif;
>
>
> end-proc;
>
>
> If you are interested I could provide the code. I haven't found the time
> to upload it to a repo.
>
> Best regards
>
> Mihael
>
>
> On 13.07.20 16:26, Charles Wilt wrote:
> > ILE C++ is easy to call..thus why we are trying to port it.
> >
> > C++ in PASE is what is difficult...
> >
> > Charles
> >
> > On Fri, Jul 10, 2020 at 5:25 PM Roger Harman <[email protected]>
> > wrote:
> >
> >> That's an interesting statement.  If it's an ILE program (or module),
> why
> >> would it be difficult to call?
> >>
> >> I've only done a couple of C (not C++) programs on IBM i so I can't
> claim
> >> any expertise - just curiosity.
> >>
> >> Roger Harman
> >> COMMON Certified Application Developer - ILE RPG on IBM i on Power
> >>
> >> --
> >>
> >>
> >>
> >> -----Original Message-----
> >> From: C400-L [mailto:[email protected]] On Behalf Of
> >> Charles Wilt
> >> Sent: Friday, July 10, 2020 9:47 AM
> >> To: Bare Metal Programming IBM i (AS/400 and iSeries)
> >> Subject: Re: [C400-L] ILE C++ standards
> >>
> >> That's an option..
> >>
> >> Except I want to call the C++ code from RPG...
> >>
> >> And while it appears that can be done, it doesn't appear
> >> particularly simple.
> >>
> >> Charles
> >>
> >> On Fri, Jul 10, 2020 at 10:25 AM Mark Waterbury <
> >> [email protected]> wrote:
> >>
> >>> Hi, Charles,
> >>>
> >>> If you really need the latest and greatest C++ standards, you should be
> >>> looking into installing the GCC G++ compiler under PASE.  :-)
> >>>
> >>> All the best,
> >>>
> >>>   Mark S. Waterbury
> >>>
> >>>> On Friday, July 10, 2020, 12:22:07 PM EDT, Charles Wilt <
> >>> [email protected]> wrote:
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> "You're surprised by this?"
> >>>
> >>> A little yeah, I expected it to be behind...but 9+ years? :o
> >>>
> >>> No, we don't do much C++, none in fact.  But I'd really like to have
> URI
> >>> Templating functionality https://en.wikipedia.org/wiki/URL_Template in
> >> RPG
> >>> and since there were some existing C++, I thought it'd be worthwhile to
> >> see
> >>> if we could port one over.
> >>>
> >>> Charles
> >>>
> >>>
> >>> On Fri, Jul 10, 2020 at 7:35 AM Kelly Beard <[email protected]>
> >>> wrote:
> >>>
> >>>> You're surprised by this?  :-)  Not to sound rude or condescending,
> but
> >>>> you, like most everyone else in the universe, probably don't do a lot
> >> of
> >>>> C++ work on the 400.  Unfortunately, we do.  We're on V7R3 here.  IBM
> >> is
> >>>> not even on C++11, technically, but on C++0x, and you have to, for
> >>>> some reason, enable a command option to get that going.  Only God in
> >>> Heaven
> >>>> knows why they cannot stay current.  I suspect that maybe the OS is
> >>> written
> >>>> with whatever C++ was in force at the time and so that is what we're
> >>> stuck
> >>>> with, but that's only my uneducated guess.
> >>>>
> >>>> How many lines is this utility?  Probably originally written on a
> Linux
> >>>> system with g++?
> >>>>
> >>>> On Thu, Jul 9, 2020 at 5:06 PM Charles Wilt <[email protected]>
> >>>> wrote:
> >>>>
> >>>>> So we're trying to port a small C++ utility to ILE...
> >>>>>
> >>>>> One of the compile errors is on the following...
> >>>>> for(auto& ele : inVars)
> >>>>>
> >>>>> Apparently this the "for each" loop which was added to C++ in
> >>> 2011...(aka
> >>>>> C++11)
> >>>>>
> >>>>> We're on v7.2, but even the v7.4 manual doesn't show it as valid.
> >>>>>
> >>>>> Looks like C++ on the IBM i include part of the C+11 standards, but
> >> not
> >>>> yet
> >>>>> all.  And of course C++14 and C++17 are nowhere to be found.
> >>>>>
> >>>>> Bit surprised the i is so far behind the times, but I suppose most
> >>> don't
> >>>>> use ILE C/C++...
> >>>>>
> >>>>> Charles
> >> --
> >> This is the Bare Metal Programming IBM i (AS/400 and iSeries) (C400-L)
> >> mailing list
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> --
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