[erlang-questions] Binary to string conversion

[Abhishek Ranjan]

I had a look at the unicode library of erlang and it contained following BIFs

bin_is_7bit/1
bom_to_encoding/1
characters_to_binary/1
characters_to_binary/2
characters_to_binary/3
characters_to_binary_int/2
characters_to_list/1
characters_to_list/2
characters_to_list_int/2
encoding_to_bom/1
module_info/0
module_info/1

But what I have is already a binary and I need it to convert into string,or given the erlang's logic of storing string as a list of characters I need binary to list converter but there isn't any as it looks like to me.

Please share suggestions.

> On May 10, 2017 at 4:37 PM Hugo Mills <hugo@REDACTED> wrote:
>
>
> On Wed, May 10, 2017 at 04:11:18PM +0530, Abhishek Ranjan wrote:
> > I have set up a chat application using ejabberd(built using erlang) and Pidgin.
> >
> > I have witnessed a proceeding where when I print out a message sent by the client to server on ejabberd it comes out as string
> >
> > For example,if I send a message as
> >
> > aman
> >
> > from the pidgin and print it inside the module containing ejabberd hook as CustomMod.erl using
> >
> > >
> > > Bin=xmpp:get_text(Packet#message.body),
> > > Name=binary_to_list(Bin),
> > >
> > > ?INFO_MSG("The value of Name is ~p~n",[Name]),
> > >
> >
> > the output comes as "aman"
> >
> > but I have a simple erlang module also for login as login.erl and it does not implement any ejabberd behavior, but is called from within CustomMod.erl when I print this message out in this module it comes enclosed within these << >> but are separated by 0's like
> >
> > aman becomes here as <<97,0,109,0,97,0,110,0>>
>
> That looks like little-endian UTF-16 to me. You probably need to do
> some Unicode conversion on your binary.
>
> Hugo.
>
> > which on doing binary_to_list(Variable) inside my login.erl I get-> [97,0,109,0,97,0,110,0]
> >
> > (where Variable is the value enclosed within <<>>)
> >
> > Can anyone tell me why is it happening and what is the way to get the value aman in login.erl also?
> >
> >
> > Regards,
> >
> > Abhishek
>
> > _______________________________________________
> > erlang-questions mailing list
> > erlang-questions@REDACTED
> > http://erlang.org/mailman/listinfo/erlang-questions
>
>
> --
> Hugo Mills | There are two hard problems in computer science:
> hugo@REDACTED carfax.org.uk | Cache invalidation, naming things, and off-by-one
> http://carfax.org.uk/ | errors.
> PGP: E2AB1DE4 |
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