[Caml-list] Beginners Question for js_of_ocaml

[Caml-list] Beginners Question for js_of_ocaml

[Helmut Brandl]

Hello List,

I am trying to use js_of_ocaml to compile my ocaml project for the 
nodejs ecosystem. Since js_of_ocaml does not compile calls to the 'unix' 
library I have to call some javascript functions directly from ocaml. 
All I need is to be able to call the javascript functions

- readdirSync
- mkdirSync
- rmdirSync
- statSync

and receive the results in ocaml.

I have looked into the documentation and into the examples, but I have 
not found a way on how to do this. All examples are for use in the 
browser. Maybe its a stupid question and it is so simple that I, as a 
beginner in js_of_ocaml, just don't see it.

Can anybody give me a hint? Thanks in advance.

Regards
Helmut

Re: [Caml-list] Beginners Question for js_of_ocaml

[Nicolás Ojeda Bär]

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Hi Helmut,

I am a js_of_ocaml beginner, but it sounds like you could do it using :

  Js.Unsafe.fun_call (Js.Unsafe.js_expr "readdirSync") [| .. args , wrapped
with Js.Unsafe.inject .. |]

You can look at the docs at
https://ocsigen.org/js_of_ocaml/2.8.3/manual/bindings, especially under
"Binding a JS function", where there is an example with the function
"decodeURI".

Cheers!

Best wishes,
Nicolas





On Sat, Jan 14, 2017 at 12:58 AM, Helmut Brandl <helmut.brandl@gmx.net>
wrote:

> Hello List,
>
> I am trying to use js_of_ocaml to compile my ocaml project for the nodejs
> ecosystem. Since js_of_ocaml does not compile calls to the 'unix' library I
> have to call some javascript functions directly from ocaml. All I need is
> to be able to call the javascript functions
>
> - readdirSync
> - mkdirSync
> - rmdirSync
> - statSync
>
> and receive the results in ocaml.
>
> I have looked into the documentation and into the examples, but I have not
> found a way on how to do this. All examples are for use in the browser.
> Maybe its a stupid question and it is so simple that I, as a beginner in
> js_of_ocaml, just don't see it.
>
> Can anybody give me a hint? Thanks in advance.
>
> Regards
> Helmut
>
>
> --
> Caml-list mailing list.  Subscription management and archives:
> https://sympa.inria.fr/sympa/arc/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

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Re: [Caml-list] Beginners Question for js_of_ocaml

[Philippe Veber]

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Also note there are bindings to nodejs for js_of_ocaml [1] developped by
Edgar Aroutiounian. I have not checked if the functions you need are in
there, but if they're not, you could contribute them to this project.

Hope that helps,
  philippe.

[1] https://github.com/fxfactorial/ocaml-nodejs

2017-01-14 8:49 GMT+01:00 Nicolás Ojeda Bär <nicolas.ojeda.bar@lexifi.com>:

> Hi Helmut,
>
> I am a js_of_ocaml beginner, but it sounds like you could do it using :
>
>   Js.Unsafe.fun_call (Js.Unsafe.js_expr "readdirSync") [| .. args ,
> wrapped with Js.Unsafe.inject .. |]
>
> You can look at the docs at https://ocsigen.org/js_of_
> ocaml/2.8.3/manual/bindings, especially under
> "Binding a JS function", where there is an example with the function
> "decodeURI".
>
> Cheers!
>
> Best wishes,
> Nicolas
>
>
>
>
>
> On Sat, Jan 14, 2017 at 12:58 AM, Helmut Brandl <helmut.brandl@gmx.net>
> wrote:
>
>> Hello List,
>>
>> I am trying to use js_of_ocaml to compile my ocaml project for the nodejs
>> ecosystem. Since js_of_ocaml does not compile calls to the 'unix' library I
>> have to call some javascript functions directly from ocaml. All I need is
>> to be able to call the javascript functions
>>
>> - readdirSync
>> - mkdirSync
>> - rmdirSync
>> - statSync
>>
>> and receive the results in ocaml.
>>
>> I have looked into the documentation and into the examples, but I have
>> not found a way on how to do this. All examples are for use in the browser.
>> Maybe its a stupid question and it is so simple that I, as a beginner in
>> js_of_ocaml, just don't see it.
>>
>> Can anybody give me a hint? Thanks in advance.
>>
>> Regards
>> Helmut
>>
>>
>> --
>> Caml-list mailing list.  Subscription management and archives:
>> https://sympa.inria.fr/sympa/arc/caml-list
>> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
>> Bug reports: http://caml.inria.fr/bin/caml-bugs
>>
>
>

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Re: [Caml-list] Beginners Question for js_of_ocaml

[Helmut Brandl]

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Hello Nicolas,

thanks for the hint. It works nearly as you explained. I have to get first
the fs object and then make a method call and not a function call.

As you explained there is all information necessary in the documentation. I
just did not find it in my first attempt.

Regards
Helmut

On Jan 14, 2017 1:49 AM, "Nicolás Ojeda Bär" <nicolas.ojeda.bar@lexifi.com>
wrote:

Hi Helmut,

I am a js_of_ocaml beginner, but it sounds like you could do it using :

  Js.Unsafe.fun_call (Js.Unsafe.js_expr "readdirSync") [| .. args , wrapped
with Js.Unsafe.inject .. |]

You can look at the docs at https://ocsigen.org/js_of_
ocaml/2.8.3/manual/bindings, especially under
"Binding a JS function", where there is an example with the function
"decodeURI".

Cheers!

Best wishes,
Nicolas





On Sat, Jan 14, 2017 at 12:58 AM, Helmut Brandl <helmut.brandl@gmx.net>
wrote:

> Hello List,
>
> I am trying to use js_of_ocaml to compile my ocaml project for the nodejs
> ecosystem. Since js_of_ocaml does not compile calls to the 'unix' library I
> have to call some javascript functions directly from ocaml. All I need is
> to be able to call the javascript functions
>
> - readdirSync
> - mkdirSync
> - rmdirSync
> - statSync
>
> and receive the results in ocaml.
>
> I have looked into the documentation and into the examples, but I have not
> found a way on how to do this. All examples are for use in the browser.
> Maybe its a stupid question and it is so simple that I, as a beginner in
> js_of_ocaml, just don't see it.
>
> Can anybody give me a hint? Thanks in advance.
>
> Regards
> Helmut
>
>
> --
> Caml-list mailing list.  Subscription management and archives:
> https://sympa.inria.fr/sympa/arc/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>

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Re: [Caml-list] Beginners Question for js_of_ocaml

[Helmut Brandl]

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Sounds interesting.

On Jan 14, 2017 12:16 PM, "Philippe Veber" <philippe.veber@gmail.com> wrote:

> Also note there are bindings to nodejs for js_of_ocaml [1] developped by
> Edgar Aroutiounian. I have not checked if the functions you need are in
> there, but if they're not, you could contribute them to this project.
>
> Hope that helps,
>   philippe.
>
> [1] https://github.com/fxfactorial/ocaml-nodejs
>
> 2017-01-14 8:49 GMT+01:00 Nicolás Ojeda Bär <nicolas.ojeda.bar@lexifi.com>
> :
>
>> Hi Helmut,
>>
>> I am a js_of_ocaml beginner, but it sounds like you could do it using :
>>
>>   Js.Unsafe.fun_call (Js.Unsafe.js_expr "readdirSync") [| .. args ,
>> wrapped with Js.Unsafe.inject .. |]
>>
>> You can look at the docs at https://ocsigen.org/js_of_ocam
>> l/2.8.3/manual/bindings, especially under
>> "Binding a JS function", where there is an example with the function
>> "decodeURI".
>>
>> Cheers!
>>
>> Best wishes,
>> Nicolas
>>
>>
>>
>>
>>
>> On Sat, Jan 14, 2017 at 12:58 AM, Helmut Brandl <helmut.brandl@gmx.net>
>> wrote:
>>
>>> Hello List,
>>>
>>> I am trying to use js_of_ocaml to compile my ocaml project for the
>>> nodejs ecosystem. Since js_of_ocaml does not compile calls to the 'unix'
>>> library I have to call some javascript functions directly from ocaml. All I
>>> need is to be able to call the javascript functions
>>>
>>> - readdirSync
>>> - mkdirSync
>>> - rmdirSync
>>> - statSync
>>>
>>> and receive the results in ocaml.
>>>
>>> I have looked into the documentation and into the examples, but I have
>>> not found a way on how to do this. All examples are for use in the browser.
>>> Maybe its a stupid question and it is so simple that I, as a beginner in
>>> js_of_ocaml, just don't see it.
>>>
>>> Can anybody give me a hint? Thanks in advance.
>>>
>>> Regards
>>> Helmut
>>>
>>>
>>> --
>>> Caml-list mailing list.  Subscription management and archives:
>>> https://sympa.inria.fr/sympa/arc/caml-list
>>> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
>>> Bug reports: http://caml.inria.fr/bin/caml-bugs
>>>
>>
>>
>

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