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Xidel is a command line tool to download web pages and extract data from them. It can download files over http/s connections, follow redirections, links, or extracted values, and also process local files. The data can be extracted using XPath 2.0, XQuery 1.0 expressions, JSONiq, CSS 3 selectors ... [More] , and custom, pattern-matching templates that are like an annotated version of the processed page. The extracted values can then be exported as plain text/xml/html/json or assigned to variables to be used in other extract expressions or to be exported to the shell. There is also an online cgi service for testing. [Less]

'libferris' is a virtual filesystem that exposes hierarchical data of all kinds through a common C++ interface. Access to data is performed using C++ IOStreams and Extended Attributes (EA) can be attached to each datum to present metadata. Ferris uses a plugin API to read various data sources and ... [More] expose them as contexts and to generate interesting EA. Current implementations include Native (kernel disk IO with event updates using fam), xml (mount an xml file as a filesystem), edb (mount a berkeley database), ffilter (mount an LDAP filter string) and mbox (mount your mailbox). EA generators include image, audio, and animation decoders. [Less]