|Perl Monk, Perl Meditation|
Re: Synchronizing STDERR and STDOUTby nothingmuch (Priest)
|on Sep 21, 2006 at 11:27 UTC||Need Help??|
FWIW, why is TAPx::Parser wrapping around the stream? Why isn't a plumbing loop pulling from the stream and pushing to the parser?
Then you don't necessarily need nonblocking reads, etc at the IO level - you could push that down to POE or whatever.
XML::Parser has a non blocking interface which i've always liked due to it's simplicity - you just push strings when you have them, and it generates events. If you put in a partial string then the parser's state machine will simply be in that state waiting for more input.
This way you can have e.g. TAPx::Parser::Harness::Win32, *Socket, *POE, *Whatever, all reusing the parser without needing to model an iterator API around the various platform specific quirks.
Update: to clarify that last part - you only truely need non blocking IO if you need to parse multiple streams simultaneously, and as long as the parser has a push api flexible enough to be reentrant (multiple parsers instantiated and with their own state simultaneously) then there's no reason why it can't deliver callbacks in only when it's ready.
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