mirror of https://github.com/ogoun/Zero.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
404 lines
12 KiB
404 lines
12 KiB
/*
|
|
* Port of Snowball stemmers on C#
|
|
* Original stemmers can be found on http://snowball.tartarus.org
|
|
* Licence still BSD: http://snowball.tartarus.org/license.php
|
|
*
|
|
* Most of stemmers are ported from Java by Iveonik Systems ltd. (www.iveonik.com)
|
|
*/
|
|
|
|
using ZeroLevel.Services.Semantic;
|
|
|
|
namespace Iveonik.Stemmers
|
|
{
|
|
public class NorwegianStemmer : StemmerOperations, ILexer
|
|
{
|
|
private readonly static NorwegianStemmer methodObject = new NorwegianStemmer();
|
|
|
|
private readonly static Among[] a_0 =
|
|
{
|
|
new Among ( "a", -1, 1, null! ),
|
|
new Among ( "e", -1, 1, null! ),
|
|
new Among ( "ede", 1, 1, null! ),
|
|
new Among ( "ande", 1, 1, null! ),
|
|
new Among ( "ende", 1, 1, null! ),
|
|
new Among ( "ane", 1, 1, null! ),
|
|
new Among ( "ene", 1, 1, null! ),
|
|
new Among ( "hetene", 6, 1, null! ),
|
|
new Among ( "erte", 1, 3, null! ),
|
|
new Among ( "en", -1, 1, null! ),
|
|
new Among ( "heten", 9, 1, null! ),
|
|
new Among ( "ar", -1, 1, null! ),
|
|
new Among ( "er", -1, 1, null! ),
|
|
new Among ( "heter", 12, 1, null! ),
|
|
new Among ( "s", -1, 2, null! ),
|
|
new Among ( "as", 14, 1, null! ),
|
|
new Among ( "es", 14, 1, null! ),
|
|
new Among ( "edes", 16, 1, null! ),
|
|
new Among ( "endes", 16, 1, null! ),
|
|
new Among ( "enes", 16, 1, null! ),
|
|
new Among ( "hetenes", 19, 1, null! ),
|
|
new Among ( "ens", 14, 1, null! ),
|
|
new Among ( "hetens", 21, 1, null! ),
|
|
new Among ( "ers", 14, 1, null! ),
|
|
new Among ( "ets", 14, 1, null! ),
|
|
new Among ( "et", -1, 1, null! ),
|
|
new Among ( "het", 25, 1, null! ),
|
|
new Among ( "ert", -1, 3, null! ),
|
|
new Among ( "ast", -1, 1, null! )
|
|
};
|
|
|
|
private readonly static Among[] a_1 =
|
|
{
|
|
new Among ( "dt", -1, -1, null! ),
|
|
new Among ( "vt", -1, -1, null! )
|
|
};
|
|
|
|
private readonly static Among[] a_2 =
|
|
{
|
|
new Among ( "leg", -1, 1, null! ),
|
|
new Among ( "eleg", 0, 1, null! ),
|
|
new Among ( "ig", -1, 1, null! ),
|
|
new Among ( "eig", 2, 1, null! ),
|
|
new Among ( "lig", 2, 1, null! ),
|
|
new Among ( "elig", 4, 1, null! ),
|
|
new Among ( "els", -1, 1, null! ),
|
|
new Among ( "lov", -1, 1, null! ),
|
|
new Among ( "elov", 7, 1, null! ),
|
|
new Among ( "slov", 7, 1, null! ),
|
|
new Among ( "hetslov", 9, 1, null! )
|
|
};
|
|
|
|
private static readonly char[] g_v = {(char)17, (char)65, (char)16, (char)1, (char)0, (char)0, (char)0,
|
|
(char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0,
|
|
(char)0, (char)0, (char)48, (char)0, (char)128 };
|
|
|
|
private static readonly char[] g_s_ending = { (char)119, (char)125, (char)149, (char)1 };
|
|
|
|
private int I_x;
|
|
private int I_p1;
|
|
|
|
private void copy_from(NorwegianStemmer other)
|
|
{
|
|
I_x = other.I_x;
|
|
I_p1 = other.I_p1;
|
|
base.copy_from(other);
|
|
}
|
|
|
|
private bool r_mark_regions()
|
|
{
|
|
bool subroot = false;
|
|
int v_1;
|
|
int v_2;
|
|
// (, line 26
|
|
I_p1 = limit;
|
|
// test, line 30
|
|
v_1 = cursor;
|
|
// (, line 30
|
|
// hop, line 30
|
|
{
|
|
int c = cursor + 3;
|
|
if (0 > c || c > limit)
|
|
{
|
|
return false;
|
|
}
|
|
cursor = c;
|
|
}
|
|
// setmark x, line 30
|
|
I_x = cursor;
|
|
cursor = v_1;
|
|
// goto, line 31
|
|
while (true)
|
|
{
|
|
v_2 = cursor;
|
|
do
|
|
{
|
|
if (!(in_grouping(g_v, 97, 248)))
|
|
{
|
|
break;
|
|
}
|
|
cursor = v_2;
|
|
subroot = true;
|
|
if (subroot) break;
|
|
} while (false);
|
|
if (subroot) { subroot = false; break; }
|
|
cursor = v_2;
|
|
if (cursor >= limit)
|
|
{
|
|
return false;
|
|
}
|
|
cursor++;
|
|
}
|
|
// gopast, line 31
|
|
while (true)
|
|
{
|
|
do
|
|
{
|
|
if (!(out_grouping(g_v, 97, 248)))
|
|
{
|
|
break;
|
|
}
|
|
subroot = true;
|
|
if (subroot) break;
|
|
} while (false);
|
|
if (subroot) { subroot = false; break; }
|
|
if (cursor >= limit)
|
|
{
|
|
return false;
|
|
}
|
|
cursor++;
|
|
}
|
|
// setmark p1, line 31
|
|
I_p1 = cursor;
|
|
// try, line 32
|
|
do
|
|
{
|
|
// (, line 32
|
|
if (!(I_p1 < I_x))
|
|
{
|
|
break;
|
|
}
|
|
I_p1 = I_x;
|
|
} while (false);
|
|
return true;
|
|
}
|
|
|
|
private bool r_main_suffix()
|
|
{
|
|
bool subroot = false;
|
|
int among_var;
|
|
int v_1;
|
|
int v_2;
|
|
int v_3;
|
|
// (, line 37
|
|
// setlimit, line 38
|
|
v_1 = limit - cursor;
|
|
// tomark, line 38
|
|
if (cursor < I_p1)
|
|
{
|
|
return false;
|
|
}
|
|
cursor = I_p1;
|
|
v_2 = limit_backward;
|
|
limit_backward = cursor;
|
|
cursor = limit - v_1;
|
|
// (, line 38
|
|
// [, line 38
|
|
ket = cursor;
|
|
// substring, line 38
|
|
among_var = find_among_b(a_0, 29);
|
|
if (among_var == 0)
|
|
{
|
|
limit_backward = v_2;
|
|
return false;
|
|
}
|
|
// ], line 38
|
|
bra = cursor;
|
|
limit_backward = v_2;
|
|
switch (among_var)
|
|
{
|
|
case 0:
|
|
return false;
|
|
|
|
case 1:
|
|
// (, line 44
|
|
// delete, line 44
|
|
slice_del();
|
|
break;
|
|
|
|
case 2:
|
|
// (, line 46
|
|
// or, line 46
|
|
do
|
|
{
|
|
v_3 = limit - cursor;
|
|
do
|
|
{
|
|
if (!(in_grouping_b(g_s_ending, 98, 122)))
|
|
{
|
|
break;
|
|
}
|
|
subroot = true;
|
|
if (subroot) break;
|
|
} while (false);
|
|
if (subroot) { subroot = false; break; }
|
|
cursor = limit - v_3;
|
|
// (, line 46
|
|
// literal, line 46
|
|
if (!(eq_s_b(1, "k")))
|
|
{
|
|
return false;
|
|
}
|
|
if (!(out_grouping_b(g_v, 97, 248)))
|
|
{
|
|
return false;
|
|
}
|
|
} while (false);
|
|
// delete, line 46
|
|
slice_del();
|
|
break;
|
|
|
|
case 3:
|
|
// (, line 48
|
|
// <-, line 48
|
|
slice_from("er");
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private bool r_consonant_pair()
|
|
{
|
|
int v_1;
|
|
int v_2;
|
|
int v_3;
|
|
// (, line 52
|
|
// test, line 53
|
|
v_1 = limit - cursor;
|
|
// (, line 53
|
|
// setlimit, line 54
|
|
v_2 = limit - cursor;
|
|
// tomark, line 54
|
|
if (cursor < I_p1)
|
|
{
|
|
return false;
|
|
}
|
|
cursor = I_p1;
|
|
v_3 = limit_backward;
|
|
limit_backward = cursor;
|
|
cursor = limit - v_2;
|
|
// (, line 54
|
|
// [, line 54
|
|
ket = cursor;
|
|
// substring, line 54
|
|
if (find_among_b(a_1, 2) == 0)
|
|
{
|
|
limit_backward = v_3;
|
|
return false;
|
|
}
|
|
// ], line 54
|
|
bra = cursor;
|
|
limit_backward = v_3;
|
|
cursor = limit - v_1;
|
|
// next, line 59
|
|
if (cursor <= limit_backward)
|
|
{
|
|
return false;
|
|
}
|
|
cursor--;
|
|
// ], line 59
|
|
bra = cursor;
|
|
// delete, line 59
|
|
slice_del();
|
|
return true;
|
|
}
|
|
|
|
private bool r_other_suffix()
|
|
{
|
|
int among_var;
|
|
int v_1;
|
|
int v_2;
|
|
// (, line 62
|
|
// setlimit, line 63
|
|
v_1 = limit - cursor;
|
|
// tomark, line 63
|
|
if (cursor < I_p1)
|
|
{
|
|
return false;
|
|
}
|
|
cursor = I_p1;
|
|
v_2 = limit_backward;
|
|
limit_backward = cursor;
|
|
cursor = limit - v_1;
|
|
// (, line 63
|
|
// [, line 63
|
|
ket = cursor;
|
|
// substring, line 63
|
|
among_var = find_among_b(a_2, 11);
|
|
if (among_var == 0)
|
|
{
|
|
limit_backward = v_2;
|
|
return false;
|
|
}
|
|
// ], line 63
|
|
bra = cursor;
|
|
limit_backward = v_2;
|
|
switch (among_var)
|
|
{
|
|
case 0:
|
|
return false;
|
|
|
|
case 1:
|
|
// (, line 67
|
|
// delete, line 67
|
|
slice_del();
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private bool CanStem()
|
|
{
|
|
int v_1;
|
|
int v_2;
|
|
int v_3;
|
|
int v_4;
|
|
// (, line 72
|
|
// do, line 74
|
|
v_1 = cursor;
|
|
do
|
|
{
|
|
// call mark_regions, line 74
|
|
if (!r_mark_regions())
|
|
{
|
|
break;
|
|
}
|
|
} while (false);
|
|
cursor = v_1;
|
|
// backwards, line 75
|
|
limit_backward = cursor; cursor = limit;
|
|
// (, line 75
|
|
// do, line 76
|
|
v_2 = limit - cursor;
|
|
do
|
|
{
|
|
// call main_suffix, line 76
|
|
if (!r_main_suffix())
|
|
{
|
|
break;
|
|
}
|
|
} while (false);
|
|
cursor = limit - v_2;
|
|
// do, line 77
|
|
v_3 = limit - cursor;
|
|
do
|
|
{
|
|
// call consonant_pair, line 77
|
|
if (!r_consonant_pair())
|
|
{
|
|
break;
|
|
}
|
|
} while (false);
|
|
cursor = limit - v_3;
|
|
// do, line 78
|
|
v_4 = limit - cursor;
|
|
do
|
|
{
|
|
// call other_suffix, line 78
|
|
if (!r_other_suffix())
|
|
{
|
|
break;
|
|
}
|
|
} while (false);
|
|
cursor = limit - v_4;
|
|
cursor = limit_backward;
|
|
return true;
|
|
}
|
|
|
|
public string Lex(string s)
|
|
{
|
|
this.setCurrent(s.ToLowerInvariant());
|
|
this.CanStem();
|
|
return this.getCurrent();
|
|
}
|
|
}
|
|
} |