65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
/* $Id$
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Part of the SWI-Prolog Semweb package
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Author: Jan Wielemaker
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E-mail: wielemak@science.uva.nl
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WWW: http://www.swi-prolog.org
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Copyright (C): 2006, University of Amsterdam
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#ifndef ATOM_H_INCLUDED
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#define ATOM_H_INCLUDED
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#define MAX_LIKE_CHOICES 100 /* max *'s in like pattern */
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#define STR_MATCH_CASE 0x0 /* Default: perfect match */
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#define STR_MATCH_PLAIN 0x1 /* Same, also match qualifier */
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#define STR_MATCH_EXACT 0x2 /* case-insensitive */
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#define STR_MATCH_SUBSTRING 0x3 /* substring */
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#define STR_MATCH_WORD 0x4 /* whole word */
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#define STR_MATCH_PREFIX 0x5 /* prefix */
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#define STR_MATCH_LIKE 0x6 /* SeRQL *like* match */
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/* MAX: 0x7 (3 bits in triple) */
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typedef unsigned char charA;
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typedef wchar_t charW;
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typedef struct text
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{ const charA *a;
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const charW *w;
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size_t length;
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} text;
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typedef struct atom_info
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{ atom_t handle;
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text text;
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int resolved;
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int rc; /* TRUE if text atom */
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} atom_info;
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int cmp_atoms(atom_t a1, atom_t a2);
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int cmp_atom_info(atom_info *a1, atom_t a2);
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atom_t first_atom(atom_t a, int match);
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int match_atoms(int how, atom_t search, atom_t label);
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unsigned int atom_hash_case(atom_t a);
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int atom_lang_matches(atom_t lang, atom_t pattern);
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#endif /*ATOM_H_INCLUDED*/
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