Dependencies
------------
libexpat-ocaml-dev
ocaml-findlib
ocaml-ulex
ocaml-nox
camlp4

and their dependencies as well as ocamlbuild which is part of the standard ocaml distribution.
The "src" directory should contain a copy of the XMLTree source dir (this can be a symbolic to
the XMLTree directory).

Build instructions
------------------

Build the XMLTree library:

cd src/XMLTree; make clean all; cd -

Build the xpathcomp program:
./configure
./build

See ./build --help to customize the build process (build with debugging/profiling code, build ocaml
bytecode instead of native binary etc...).

This will produce a main.native executable (a symlink to the real binary which lies in the _build/src
directory).

Usage
-----
./main.native [options] 'input_file' 'query' [output_file]

input_file can be either an xml file (and thus the name must have a .xml extension) or an indexed file
(with a .srx extension). Due to a bug in the parser, the query can only use the explicit syntax, that
is:

/descendant::a/child::b[ child::a and descendant::c or not(contains( ., "str")) ]/descendant::d

and no // or a/b/c. Text predicates must be of the form function( ., "string") where function can
be: contains, equals, starts-with, ends-with.

Available options are:

  -c counting only (don't materialize the result set)
  -f sample factor [default=64]
  -i index empty texts [default=false]
  -d disable text collection[default=false]
  -s save the intermediate representation into file.srx
  -b real bottom up run
  -nj disable jumping
  -index-type {default|swcsa|rlcsa} choose text index type
  -v verbose mode
  -help  Display this list of options
  --help  Display this list of options