yuce / pyswip / 99

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master: 83%

Pull #80

travis-ci

Support multibyte strings and atoms

* pyswip/core.py: Add functions required to work with UTF-8 encoded symbols.
* pyswip/easy.py (Atom.__init__): Use `PL_atom_wchars' to get string
  representation of the atom. Unfortunately `PL_atom_wchars' can fail
  on some strings. e.g. second definition of `father' predicate from
  https://github.com/Hefaist/test_pyswip/blob/master/utf_facts.pl
  leads to "ValueError: character U+ffffffe1 is not in range [U+0000; U+10ffff]"
  error. Allow to pass correct string instead as workaround.
  (Atom.fromTerm): Pass atom string representation extracted from
  `term_t' to Atom constructor.
  (Variable.__init__): Ask for a UTF-8 string.
  (getAtomChars): Ask for a UTF-8 string. Remove "deprecated" comment
  still this function required for `Atom.fromTerm' function.
  (getString): Ask for a UTF-8 string.
* pyswip/prolog.py (Prolog._QueryWrapper.__call__): Specify that we'll
  send UTF-8 string to prolog.

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