xml parser builtin based on expat.

COMPILATION: ./configure --with-bash=/path/to/bash/headers make

I'm using libtool rather than bash own shobj-conf script to generate the dynamic library, not sure if it's a good idea or not. The resulting library is really in src/.libs, i've added a symlink for convenience.

USAGE:

To load it use:

enable -f expat.so expat

To use it:

expat [-s start_callback] [-e end_callback] [-d data_callback]
[-c comment_callback] [file ...]

The callbacks are evaluated and are called as follows:

• start_callback: The code will be evaluated at each start of a new element. 2 variables will be set:

• XML_NAME will contain the name of the element
• XML_ATTRIBUTES is an associative array containing the attributes

• end_callback: will be evaluated at each end of a new element, XML_NAME will contain the name of the element

• data_callback: called between the element, it will set XML_DATA to free text. However a single block of contiguous text free of markup may still result in a sequence of calls to this handler. In other words, if you're searching for a pattern in the text, it may be split across calls to this handler

• comment_callback will put the content of the comment in XML_COMMENT

eg:

expat -s 'declare -p XML_NAME XML_ATTRIBUTES' -e "declare -p XML_NAME"
-d "declare -p XML_DATA" -c "declare -p XML_COMMENT" file.xml