using mustapas from leledumbo inside a DLL
lazarus / 38-Networking and Web Programming

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mtournay · 2020-02-18 16:56

Hello

I try to use https://github.com/leledumbo/mustapas from leledumbo but
it seems to be not working from a dll, same code from a simple console
program is functionnal.

When I try to use parameters, output stream is empty. After some
investigations, i found that
Code: [Select]  AssignStream(Output,Result);
  Rewrite(Output);
and
Code: [Select]  Write(Output,Value);              

is disfunctionnal : when I write directly in the stream,
Code: [Select]  result.Write(value[1], length(value));
output stream is quite good (there's some other problems I believe
related to input stream and I see \r\n string at each line)

does someone already had this issue ?

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mtournay · 2020-02-19 08:07

Hi all

I just forked mustapas. The code does not use iostream anymore and run
correctly from DLL.

https://github.com/mtournay/mustapas

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devEric69 · 2020-02-19 08:32

Your improvements (thanks for sharing) can't be "push"ed in the
original leledumbo/mustapas GitHut?

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mtournay · 2020-02-19 08:40

Hi

Before asking for PR, I would like to discuss with leledumbo about it
(I'd like to know why at first he use iostream)

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devEric69 · 2020-02-19 08:54

That's for sure: leledumbo is the only one who can decide if your
improvements can be "push"ed in his GitHub.
==>All I wanted to say, is that it's always better to avoid the
fragmentation of a code that provides an evolution of the same
functionality, as far as it is possible.

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Thaddy · 2020-02-19 09:26

I don't think avoiding iostream is a good thing, but I leave it up to
Leledumbo to decide.
Reason being that under Linux everything is a file and the original
code seems to be designed with that in mind..
It may be that a shared library should be notified of the IO handles
in the main program, though.
I can see that point if that is what you mean.

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mtournay · 2020-02-19 09:57

You both are right

And that's why i didn't PR for now

both codes are functionnal, and we have to decide if we reunite with a
define with/without iostream (or any other solution) or leave both
library.

I don't like the idea of two libraries : i believe I 'm gonna need
conditionnal sections, inverted, ... so IF I improve the code, it's
better for everyone if there's only one unit

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Roland57 · 2020-02-19 12:01

Hello!

I just discover Mustache. Could someone be kind enough to provide an
usage example?

Regards.

Roland

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mtournay · 2020-02-19 13:33

1. create a file somewhere. inside this file, put
Code: [Select]hello {{name}}!2. load this file in a stream
3. create a json object with {name: "world"}
4. call mustapas.render and get result in third param
5. put result where you want (screen, http result, ...)

here is a sample code

Code: [Select]program test_mustache;

uses classes, fpjson, mustapas;

var
  input: TFileStream;
  output: TStringStream;
  params: TJSONObject;

begin
  input := TFileStream.Create('__path__to_your_file', fmOpenRead);
  output:= TStringStream.Create('');
  params := TJSONObject.Create(['name', 'world']);

  Render(input, params, output);
  writeln(output.DataString);

  params.free;
  input.free;
  output.free;
end.

more info on mustache https://mustache.github.io/mustache.5.html

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Roland57 · 2020-02-19 13:55

@mtournay

Thank you.