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Date: Mon, 23 Aug 2004 10:35:16 -0700
Lines: 38
Subject: Re: php stream filters
From: pollita@php.net ("Sara Golemon")

If all you want to do is use an already implemented one just do this:

  php_stream *stream;
  php_stream_filter *filter;
  zval *arguments = NULL; /* Populate this with value(s) appropriate to the
filter */

  stream = php_stream_open_wrapper(.....blah blah blah.....);
  filter = php_stream_filter_create("filtername", arguments,
php_stream_is_persistent(stream) TSRMLS_CC);
  /* Or &stream->writefilters as appropriate */
  php_stream_filter_append(&stream->readfilters, filter);

  /* Of course, in the real world you'll want to check both stream and
filter for NULL as they may have failed to instantiate */

That said, I don't think iconv.* will be any help.  It only covers
base64_(en|de)code() and quoted_printable_(en|de)code().

Filter implementation is a bit trickier.  Take a look at
ext/standard/filters.c for more info on that.  If you come up with a UTF
converter, I'm sure it can be added to the standard set of filters.

-Sara

"L0t3k" <cshmoove@bellsouth.net> wrote in message
news:20040823142259.47665.qmail@pb1.pair.com...
> can anyone give a hint as to how to use stream filters from an extension ?
>
> i have to parse input files which may be in a variety of encodings (mainly
> UTF8), and processing is done internally in UTF16.
>
> i noticed that there is an iconv filter, but i havent a clue (even after
> googling) of how to use it.
>
> l0t3k