/usr/include/CLucene/document/NumberTools.h is in libclucene-dev 2.3.3.4-4build1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2003-2006 Ben van Klinken and the CLucene Team
*
* Distributable under the terms of either the Apache License (Version 2.0) or
* the GNU Lesser General Public License, as specified in the COPYING file.
------------------------------------------------------------------------------*/
#ifndef _lucene_document_NumberTools_
#define _lucene_document_NumberTools_
CL_NS_DEF(document)
/**
* Provides support for converting longs to Strings, and back again. The strings
* are structured so that lexicographic sorting order is preserved.
*
* <p>
* That is, if l1 is less than l2 for any two longs l1 and l2, then
* NumberTools.longToString(l1) is lexicographically less than
* NumberTools.longToString(l2). (Similarly for "greater than" and "equals".)
*
* <p>
* This class handles <b>all</b> long values (unlike
* {@link org.apache.lucene.document.DateField}).
*
*
*/
class CLUCENE_EXPORT NumberTools :LUCENE_BASE {
#define NUMBERTOOLS_RADIX 36
#define NEGATIVE_PREFIX _T("-")
// NB: NEGATIVE_PREFIX must be < POSITIVE_PREFIX
#define POSITIVE_PREFIX _T("0")
public:
//NB: this must be less than
/**
* Equivalent to longToString(Long.MIN_VALUE); STR_SIZE is depandant on the length of it
*/
static const TCHAR* MIN_STRING_VALUE;
/**
* Equivalent to longToString(Long.MAX_VALUE)
*/
static const TCHAR* MAX_STRING_VALUE;
/**
* The length of (all) strings returned by {@link #longToString}
*/
LUCENE_STATIC_CONSTANT (size_t, STR_SIZE = 14);
/**
* Converts a long to a String suitable for indexing.
*
* @memory Caller should free the returned buffer
*/
static TCHAR* longToString(int64_t l);
/**
* Converts a String that was returned by {@link #longToString} back to a
* long.
*
* @throws IllegalArgumentException
* if the input is null
* @throws NumberFormatException
* if the input does not parse (it was not a String returned by
* longToString()).
*/
static int64_t stringToLong(const TCHAR* str);
~NumberTools();
};
CL_NS_END
#endif
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