/usr/include/gtextutils/natsort.h is in libgtextutils-dev 0.7-4.
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 | /*
Gordon's Text-Utilities Library
Copyright (C) 2009-2013 Assaf Gordon (assafgordon@gmail.com)
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef __NATURAL_SORT_STL_H__
#define __NATURAL_SORT_STL_H__
/*
* natsort.h -
* STL-compatible interface to Martin Pool's Natural-Order sorting routines.
*
* see http://sourcefrog.net/projects/natsort/ for more details
*
* Note 1:
* There's a boost equivalent version of 'composable natural sort'
* at http://www.boostcookbook.com/Recipe:/1235053
* But it requires the boost library (including the regex engine),
* and I prefer not to use it for now.
*
* Note 2:
* As of FSF GNU Coreutils version 7.1, the 'sort' progarm as a similar sorting order
* called 'version' (with the -V command argument).
* Coreutils's implementation is found in <coreutils-7.1>/src/filevercmp.{ch}.
* The results are similar to Matrin Poo's NatSort, but not identical
* if the sorted strings are more complex than <prefixNUM>.
*/
/*
Usage:
// sort an array in natural order
vector<string> v;
v.push_back("chr20");
v.push_back("chr10");
v.push_back("chr5");
v.push_back("chr1");
v.push_back("chr2");
// "regular" sort
sort(v.begin(), v.end() );
// order will be:
// chr1
// chr10
// chr2
// chr20
// chr5
// "natural order" sort
sort(v.begin(), v.end(), natural_sort_predicate() );
// order will be:
// chr1
// chr2
// chr5
// chr10
// chr20
*/
extern "C" {
/*
strnatcmp.{h,c} -- Perform 'natural order' comparisons of strings in C.
Copyright (C) 2000, 2004 by Martin Pool <mbp sourcefrog net>
*/
#include "strnatcmp.h"
}
#include <string>
struct natural_sort_predicate : public std::binary_function<std::string, std::string, bool>
{
bool operator() ( const std::string& s1, const std::string& s2 )
{
return strnatcmp(s1.c_str(), s2.c_str()) < 0 ;
}
};
struct natural_sort_ignore_case_predicate : public std::binary_function<std::string, std::string, bool>
{
bool operator() ( const std::string& s1, const std::string& s2 )
{
return strnatcasecmp(s1.c_str(), s2.c_str()) < 0 ;
}
};
/*
inline bool natural_sort_predicate(const std::string& s1, const std::string& s2)
{
return strnatcmp(s1.c_str(), s2.c_str()) < 0 ;
}
inline bool natural_sort_ignore_case_predicate(const std::string& s1, const std::string& s2)
{
return strnatcasecmp(s1.c_str(), s2.c_str()) < 0 ;
}*/
#endif
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