Re: ILE C++ standards

@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)
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