php stream filters

php.internals

l0t3k

22 years ago
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

Sara Golemon

22 years ago
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...