/usr/include/xapian-1.3/xapian/expanddecider.h is in libxapian-1.3-dev 1.3.4-0ubuntu6.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 | /** @file expanddecider.h
* @brief Allow rejection of terms during ESet generation.
*/
/* Copyright (C) 2007,2011,2013,2014,2015 Olly Betts
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XAPIAN_INCLUDED_EXPANDDECIDER_H
#define XAPIAN_INCLUDED_EXPANDDECIDER_H
#if !defined XAPIAN_IN_XAPIAN_H && !defined XAPIAN_LIB_BUILD
# error "Never use <xapian/expanddecider.h> directly; include <xapian.h> instead."
#endif
#include <set>
#include <string>
#include <xapian/visibility.h>
namespace Xapian {
/** Virtual base class for expand decider functor. */
class XAPIAN_VISIBILITY_DEFAULT ExpandDecider {
/// Don't allow assignment.
void operator=(const ExpandDecider &);
/// Don't allow copying.
ExpandDecider(const ExpandDecider &);
public:
/// Default constructor.
ExpandDecider() { }
/** Do we want this term in the ESet?
*
* @param term The term to test.
*/
virtual bool operator()(const std::string &term) const = 0;
/** Virtual destructor, because we have virtual methods. */
virtual ~ExpandDecider();
};
/** ExpandDecider subclass which rejects terms using two ExpandDeciders.
*
* Terms are only accepted if they are accepted by both of the specified
* ExpandDecider objects.
*/
class XAPIAN_VISIBILITY_DEFAULT ExpandDeciderAnd : public ExpandDecider {
const ExpandDecider &first, &second;
public:
/** Terms will be checked with @a first, and if accepted, then checked
* with @a second.
*
* @param first_ First ExpandDecider object to test with.
* @param second_ ExpandDecider object to test with if first_ accepts.
*/
ExpandDeciderAnd(const ExpandDecider &first_,
const ExpandDecider &second_)
: first(first_), second(second_) { }
/** Compatibility method.
*
* @param first_ First ExpandDecider object to test with.
* @param second_ ExpandDecider object to test with if first_ accepts.
*/
ExpandDeciderAnd(const ExpandDecider *first_,
const ExpandDecider *second_)
: first(*first_), second(*second_) { }
virtual bool operator()(const std::string &term) const;
};
/** ExpandDecider subclass which rejects terms in a specified list.
*
* ExpandDeciderFilterTerms provides an easy way to filter out terms from
* a fixed list when generating an ESet.
*/
class XAPIAN_VISIBILITY_DEFAULT ExpandDeciderFilterTerms : public ExpandDecider {
std::set<std::string> rejects;
public:
/** The two iterators specify a list of terms to be rejected.
*
* @param reject_begin Begin iterator for the list of terms to
* reject. It can be any input_iterator type
* which returns std::string or char * (e.g.
* TermIterator or char **).
* @param reject_end End iterator for the list of terms to reject.
*/
template <class Iterator>
ExpandDeciderFilterTerms(Iterator reject_begin, Iterator reject_end)
: rejects(reject_begin, reject_end) { }
virtual bool operator()(const std::string &term) const;
};
/** ExpandDecider subclass which restrict terms to a particular prefix
*
* ExpandDeciderFilterPrefix provides an easy way to choose terms with a
* particular prefix when generating an ESet.
*/
class XAPIAN_VISIBILITY_DEFAULT ExpandDeciderFilterPrefix : public ExpandDecider {
std::string prefix;
public:
/** The parameter specify the prefix of terms to be retained
* @param prefix_ restrict terms to the particular prefix_
*/
explicit ExpandDeciderFilterPrefix(const std::string &prefix_)
: prefix(prefix_) { }
virtual bool operator() (const std::string &term) const;
};
}
#endif // XAPIAN_INCLUDED_EXPANDDECIDER_H
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