Stream wrappers and filters

[nozavroni]

Do some research into ways you might be able to use PHP's native stream wrappers, filters, and other related functionality to add cool features to CSVelte. I've already considered using a stream wrapper to read binary Excel files, but what about Google drive spreadsheets or databases or... well.. think of stuff.

Possible to create a csv:// stream wrapper that somehow validates CSV against a schema, or applies other semantic information somehow?

How about a stream filter that converts a CSV file from one flavor to another? Useful?

Character encoding - transcoding from one to another...

Resources

• StreamInterface / native php streams comparison by the author of Guzzle - This is a fantastic overview of the benefits of StreamInterface abstraction over native PHP streams. VERY relevant to what I want to do here
• [https://github.com/mtdowling/streamer/blob/master/src/BaseWrapper.php](Streamer BaseWrapper) - Absolutely GORGEOUS implementation of a stream resource wrapper by the author of Guzzle. Allows you to get an actual stream wrapper from a stream resource. I love this guy. His code is just sexy as hell. Sexy. As. Hell.
• https://www.sitepoint.com/using-php-streams-effectively/ - looks really informative
• http://php.net/manual/en/filters.php
• http://php.net/manual/en/stream.filters.php
• http://stackoverflow.com/questions/2583338/adding-filter-parameter-to-stream-filter-when-using-php-filter
• http://stackoverflow.com/questions/5210490/how-to-stream-filtering-php-s-standard-output-data
• https://books.google.com/books?id=03SpBgAAQBAJ&pg=PA110&lpg=PA110&dq=what+do+people+use+php+stream+filters+for&source=bl&ots=_Ni7_4RsGJ&sig=rYJuF4htC6un9Ub1xvvLe2OEHJA&hl=en&sa=X&ved=0ahUKEwj3jMTaxZrPAhUX0mMKHfI9DlEQ6AEIUTAI#v=onepage&q=what%20do%20people%20use%20php%20stream%20filters%20for&f=false - I have this book on my tablet
• https://books.google.com/books?id=B_OCVIL_W80C&pg=PA391&lpg=PA391&dq=what+do+people+use+php+stream+filters+for&source=bl&ots=koCcT9k8zV&sig=L68yq0ZNMrPVFoACFqT8q2L4ek8&hl=en&sa=X&ved=0ahUKEwj3jMTaxZrPAhUX0mMKHfI9DlEQ6AEIVDAJ#v=onepage&q=what%20do%20people%20use%20php%20stream%20filters%20for&f=false
• http://stackoverflow.com/questions/11850726/splfileobject-vs-fopen-in-php
• http://emsmith.net/slides/Writing%20and%20Using%20PHP%20Streams%20and%20Sockets%20-%20tek11.pdf - very informative
• http://guzzle3.readthedocs.io/http-client/entity-bodies.html
• http://www.php.net/manual/en/wrappers.php.php
• http://docs.aws.amazon.com/aws-sdk-php/v2/guide/service-s3.html