[3745] | 1 | /**************************************************************************
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| 2 | *
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| 3 | * lovinstem.c -- Stemming code
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| 4 | * Copyright (C) 1994 Linh Huynh ([email protected])
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| 5 | *
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| 6 | * This program is free software; you can redistribute it and/or modify
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| 7 | * it under the terms of the GNU General Public License as published by
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| 8 | * the Free Software Foundation; either version 2 of the License, or
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| 9 | * (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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| 19 | *
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| 20 | * $Id: lovinstem.c 3745 2003-02-20 21:20:24Z mdewsnip $
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| 21 | *
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| 22 | **************************************************************************/
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| 23 |
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| 24 | static char *RCSID = "$Id: lovinstem.c 3745 2003-02-20 21:20:24Z mdewsnip $";
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| 25 |
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| 26 | #include "sysfuncs.h"
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| 27 |
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| 28 |
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| 29 | /*****************************************************************************
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| 30 | *
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| 31 | * Transformational Rules used in Recoding Stem Terminations
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| 32 | *
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| 33 | * Parameter in functions:
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| 34 | * ch : the second last character of the old ending
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| 35 | * (after removing one of double consonants)
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| 36 | *
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| 37 | ****************************************************************************/
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| 38 |
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| 39 |
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| 40 | /************ Conditional rules associated with transformations **************/
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| 41 |
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| 42 | static int aio ();
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| 43 | static int s ();
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| 44 | static int pt ();
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| 45 | static int m ();
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| 46 | static int n ();
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| 47 |
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| 48 | static int
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| 49 | aio (ch) /* Rule number 9 */
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| 50 | char ch;
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| 51 | {
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| 52 | return ((ch != 'a') && (ch != 'i') && (ch != 'o'));
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| 53 | }
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| 54 |
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| 55 | static int
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| 56 | s (ch) /* Rule Number 24 */
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| 57 | char ch;
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| 58 | {
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| 59 | return (ch != 's');
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| 60 | }
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| 61 |
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| 62 | static int
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| 63 | pt (ch) /* Rule number 28 */
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| 64 | char ch;
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| 65 | {
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| 66 | return ((ch != 'p') && (ch != 't'));
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| 67 | }
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| 68 |
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| 69 | static int
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| 70 | m (ch) /* Rule number 30 */
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| 71 | char ch;
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| 72 | {
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| 73 | return (ch != 'm');
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| 74 | }
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| 75 |
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| 76 | static int
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| 77 | n (ch) /* Rule number 32 */
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| 78 | char ch;
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| 79 | {
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| 80 | return (ch != 'n');
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| 81 | }
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| 82 |
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| 83 |
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| 84 | /**************************************************************************
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| 85 | *
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| 86 | * Context-sensitive rules associated with certain endings.
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| 87 | *
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| 88 | * The notations of the rules are the same as in Lovins' paper
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| 89 | * except that rule A is replaced by a NULL in the data structure.
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| 90 | *
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| 91 | * Function parameters:
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| 92 | * - stem_length: possible stem length
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| 93 | * - end : pointer points to the end of the possible stem.
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| 94 | *
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| 95 | *************************************************************************/
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| 96 |
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| 97 |
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| 98 | /********* Context-sensitive rule function declarations ******************/
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| 99 |
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| 100 | static int B ();
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| 101 | static int C ();
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| 102 | static int D ();
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| 103 | static int E ();
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| 104 | static int F ();
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| 105 | static int G ();
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| 106 | static int H ();
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| 107 | static int I ();
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| 108 | static int J ();
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| 109 | static int K ();
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| 110 | static int L ();
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| 111 | static int M ();
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| 112 | static int N ();
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| 113 | static int O ();
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| 114 | static int P ();
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| 115 | static int Q ();
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| 116 | static int R ();
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| 117 | static int S ();
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| 118 | static int T ();
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| 119 | static int U ();
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| 120 | static int V ();
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| 121 | static int W ();
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| 122 | static int X ();
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| 123 | static int Y ();
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| 124 | static int Z ();
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| 125 | static int AA ();
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| 126 | static int BB ();
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| 127 | static int CC ();
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| 128 |
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| 129 | static int
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| 130 | B (stem_length, end)
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| 131 | int stem_length;
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| 132 | char *end;
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| 133 | {
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| 134 | return (stem_length >= 3);
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| 135 | }
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| 136 |
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| 137 | static int
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| 138 | C (stem_length, end)
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| 139 | int stem_length;
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| 140 | char *end;
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| 141 | {
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| 142 | return (stem_length >= 4);
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| 143 | }
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| 144 |
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| 145 | static int
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| 146 | D (stem_length, end)
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| 147 | int stem_length;
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| 148 | char *end;
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| 149 | {
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| 150 | return (stem_length >= 5);
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| 151 | }
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| 152 |
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| 153 | static int
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| 154 | E (stem_length, end)
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| 155 | int stem_length;
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| 156 | char *end;
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| 157 | {
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| 158 | return (*end != 'e');
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| 159 | }
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| 160 |
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| 161 | static int
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| 162 | F (stem_length, end)
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| 163 | int stem_length;
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| 164 | char *end;
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| 165 | {
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| 166 | return ((stem_length >= 3) && (*end != 'e'));
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| 167 | }
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| 168 |
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| 169 | static int
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| 170 | G (stem_length, end)
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| 171 | int stem_length;
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| 172 | char *end;
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| 173 | {
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| 174 | return ((stem_length >= 3) && (*end == 'f'));
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| 175 | }
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| 176 |
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| 177 | static int
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| 178 | H (stem_length, end)
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| 179 | int stem_length;
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| 180 | char *end;
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| 181 | {
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| 182 | char p1, p2;
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| 183 | p1 = *end;
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| 184 | p2 = *(end - 1);
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| 185 | return ((p1 == 't') || ((p1 == 'l') && (p2 == 'l')));
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| 186 | }
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| 187 |
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| 188 | static int
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| 189 | I (stem_length, end)
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| 190 | int stem_length;
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| 191 | char *end;
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| 192 | {
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| 193 | char p1;
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| 194 | p1 = *end;
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| 195 | return ((p1 != 'o') && (p1 != 'e'));
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| 196 | }
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| 197 |
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| 198 | static int
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| 199 | J (stem_length, end)
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| 200 | int stem_length;
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| 201 | char *end;
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| 202 | {
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| 203 | char p1;
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| 204 | p1 = *end;
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| 205 | return ((p1 != 'a') && (p1 != 'e'));
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| 206 | }
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| 207 |
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| 208 | static int
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| 209 | K (stem_length, end)
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| 210 | int stem_length;
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| 211 | char *end;
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| 212 | {
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| 213 | char p1;
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| 214 | p1 = *end;
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| 215 | return ((stem_length >= 3) &&
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| 216 | ((p1 == 'l') || (p1 == 'i') ||
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| 217 | ((p1 == 'e') && (*(end - 2) == 'u'))));
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| 218 | }
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| 219 |
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| 220 | static int
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| 221 | L (stem_length, end)
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| 222 | int stem_length;
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| 223 | char *end;
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| 224 | {
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| 225 | char p1, p2;
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| 226 | p1 = *end;
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| 227 | p2 = *(end - 1);
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| 228 | if (p1 == 's')
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| 229 | return (p2 == 'o');
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| 230 | else
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| 231 | return ((p1 != 'u') && (p1 != 'x'));
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| 232 | }
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| 233 |
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| 234 | static int
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| 235 | M (stem_length, end)
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| 236 | int stem_length;
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| 237 | char *end;
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| 238 | {
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| 239 | char p1;
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| 240 | p1 = *end;
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| 241 | return ((p1 != 'a') && (p1 != 'c') &&
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| 242 | (p1 != 'e') && (p1 != 'm'));
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| 243 | }
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| 244 |
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| 245 | static int
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| 246 | N (stem_length, end)
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| 247 | int stem_length;
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| 248 | char *end;
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| 249 | {
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| 250 | if (stem_length >= 3)
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| 251 | {
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| 252 | if (*(end - 2) == 's')
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| 253 | return (stem_length >= 4);
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| 254 | else
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| 255 | return 1;
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| 256 | }
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| 257 | else
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| 258 | return 0;
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| 259 | }
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| 260 |
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| 261 | static int
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| 262 | O (stem_length, end)
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| 263 | int stem_length;
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| 264 | char *end;
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| 265 | {
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| 266 | char p1;
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| 267 | p1 = *end;
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| 268 | return ((p1 == 'l') || (p1 == 'i'));
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| 269 | }
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| 270 |
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| 271 | static int
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| 272 | P (stem_length, end)
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| 273 | int stem_length;
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| 274 | char *end;
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| 275 | {
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| 276 | return (*end != 'c');
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| 277 | }
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| 278 |
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| 279 | static int
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| 280 | Q (stem_length, end)
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| 281 | int stem_length;
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| 282 | char *end;
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| 283 | {
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| 284 | char p1;
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| 285 | p1 = *end;
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| 286 |
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| 287 | return ((stem_length >= 3) && (p1 != 'l') && (p1 != 'n'));
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| 288 | }
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| 289 |
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| 290 | static int
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| 291 | R (stem_length, end)
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| 292 | int stem_length;
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| 293 | char *end;
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| 294 | {
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| 295 | char p1;
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| 296 | p1 = *end;
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| 297 | return ((p1 == 'n') || (p1 == 'r'));
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| 298 | }
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| 299 |
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| 300 | static int
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| 301 | S (stem_length, end)
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| 302 | int stem_length;
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| 303 | char *end;
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| 304 | {
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| 305 | char p1, p2;
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| 306 | p1 = *end;
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| 307 | p2 = *(end - 1);
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| 308 |
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| 309 | if (p1 == 't')
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| 310 | return (p2 != 't');
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| 311 | else
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| 312 | return ((p1 == 'r') && (p2 == 'd'));
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| 313 | }
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| 314 |
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| 315 | static int
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| 316 | T (stem_length, end)
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| 317 | int stem_length;
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| 318 | char *end;
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| 319 | {
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| 320 | char p1, p2;
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| 321 | p1 = *end;
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| 322 | p2 = *(end - 1);
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| 323 |
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| 324 | if (p1 == 't')
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| 325 | return (p2 != 'o');
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| 326 | else
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| 327 | return (p1 == 's');
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| 328 | }
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| 329 |
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| 330 | static int
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| 331 | U (stem_length, end)
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| 332 | int stem_length;
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| 333 | char *end;
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| 334 | {
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| 335 | char p1;
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| 336 | p1 = *end;
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| 337 |
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| 338 | return ((p1 == 'l') || (p1 == 'm') ||
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| 339 | (p1 == 'n') || (p1 == 'r'));
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| 340 | }
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| 341 |
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| 342 | static int
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| 343 | V (stem_length, end)
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| 344 | int stem_length;
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| 345 | char *end;
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| 346 | {
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| 347 | return (*end == 'c');
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| 348 | }
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| 349 |
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| 350 | static int
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| 351 | W (stem_length, end)
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| 352 | int stem_length;
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| 353 | char *end;
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| 354 | {
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| 355 | char p1;
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| 356 | p1 = *end;
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| 357 |
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| 358 | return ((p1 != 's') && (p1 != 'u'));
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| 359 | }
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| 360 |
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| 361 | static int
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| 362 | X (stem_length, end)
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| 363 | int stem_length;
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| 364 | char *end;
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| 365 | {
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| 366 | char p1;
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| 367 | p1 = *end;
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| 368 |
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| 369 | if (p1 == 'e')
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| 370 | return ((stem_length >= 3) && (*(end - 2) == 'u'));
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| 371 | else
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| 372 | return ((p1 == 'l') || (p1 == 'i'));
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| 373 | }
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| 374 |
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| 375 | static int
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| 376 | Y (stem_length, end)
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| 377 | int stem_length;
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| 378 | char *end;
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| 379 | {
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| 380 | return ((*end == 'n') && (*(end - 1) == 'i'));
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| 381 | }
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| 382 |
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| 383 | static int
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| 384 | Z (stem_length, end)
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| 385 | int stem_length;
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| 386 | char *end;
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| 387 | {
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| 388 | return (*end != 'f');
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| 389 | }
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| 390 |
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| 391 | static int
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| 392 | AA (stem_length, end)
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| 393 | int stem_length;
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| 394 | char *end;
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| 395 | {
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| 396 | char p1, p2;
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| 397 | p1 = *end;
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| 398 | p2 = *(end - 1);
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| 399 |
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| 400 | if (p1 == 'h')
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| 401 | return ((p2 == 'p') || (p2 == 't'));
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| 402 | else if (p1 == 'r')
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| 403 | return ((p2 == 'e') || (p2 == 'o'));
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| 404 | else if (p1 == 's')
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| 405 | return (p2 == 'e');
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| 406 | else
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| 407 | return ((p1 == 'd') || (p1 == 'f') ||
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| 408 | (p1 == 'l') || (p1 == 't'));
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| 409 | }
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| 410 |
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| 411 | static int
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| 412 | BB (stem_length, end)
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| 413 | int stem_length;
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| 414 | char *end;
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| 415 | {
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| 416 | if (stem_length >= 3)
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| 417 | {
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| 418 | if (stem_length >= 4)
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| 419 | return (strncmp (end - 3, "ryst", 4) != 0);
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| 420 | else
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| 421 | return (strncmp (end - 2, "met", 3) != 0);
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| 422 | }
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| 423 | else
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| 424 | return 0;
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| 425 | }
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| 426 |
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| 427 | static int
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| 428 | CC (stem_length, end)
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| 429 | int stem_length;
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| 430 | char *end;
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| 431 | {
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| 432 | return (*end == 'l');
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| 433 | }
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| 434 |
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| 435 | /**************************************************************************/
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| 436 |
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| 437 | #define MIN_STEM_LENGTH 2
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| 438 | #define MAX_ENDING_SIZE 11
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| 439 | #define PREDEFINED_SIZE (MAX_ENDING_SIZE + MIN_STEM_LENGTH)
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| 440 | #define EOS '\0'
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| 441 | /* [RPAP - Jan 97: Stem Index Change] */
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| 442 | #define MAX_STEM_LENGTH 255
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| 443 |
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| 444 | static char *remove_ending (char *word, int w_len);
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| 445 | static void recode_stem (char *stem_end);
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| 446 |
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| 447 | /* =========================================================================
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| 448 | * Function: stem
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| 449 | * Description:
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| 450 | * Implemetation of the Lovins' stemming algorithm described in
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| 451 | * J.B. Lovins, "Development of a Stemming Algorithm",
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| 452 | * Mechanical Translation and Computational Linguistics, Vol 11,1968.
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| 453 | * Input: a word string with the length in the first byte
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| 454 | * Output: the stemmed word
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| 455 | * ========================================================================= */
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| 456 |
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| 457 | void
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| 458 | lovinstem (u_char * word)
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| 459 | {
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| 460 | char *word_start; /* points to first letter of word */
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| 461 | char *stem_end; /* points to last character of stem portion */
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| 462 | int old_length; /* length of word */
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| 463 | int new_length; /* length after stemming */
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| 464 |
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| 465 | /* [RPAP - Jan 97: Stem Index Change] */
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| 466 | u_char copy[MAX_STEM_LENGTH + 2];
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| 467 | bcopy ((char *) word, (char *) copy, *word + 1);
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| 468 |
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| 469 | old_length = *copy; /* [RPAP - Jan 97: Stem Index Change] */
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| 470 |
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| 471 | /* The word must be at least MIN_STEM_LENGTH characters long. */
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| 472 | if (old_length <= MIN_STEM_LENGTH)
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| 473 | return;
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| 474 |
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| 475 | word_start = (char *) copy + 1; /* jump over length byte */ /* [RPAP - Jan 97: Stem Index Change] */
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| 476 | copy[old_length + 1] = '\0'; /* null terminate string */ /* [RPAP - Jan 97: Stem Index Change] */
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| 477 |
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| 478 | stem_end = remove_ending (word_start, old_length);
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| 479 | recode_stem (stem_end);
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| 480 |
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| 481 | /* fix up new length */
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| 482 | /* have to use strlen because have no other way of telling length */
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| 483 | new_length = strlen (word_start);
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| 484 | *copy = new_length; /* [RPAP - Jan 97: Stem Index Change] */
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| 485 |
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| 486 | /* [RPAP - Jan 97: Stem Index Change] */
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| 487 | bcopy ((char *) copy, (char *) word, *copy + 1);
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| 488 |
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| 489 | } /*stem_complex */
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| 490 |
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| 491 | /* =========================================================================
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| 492 |
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| 493 | * Data structure for recoding and the method for recoding the stem.
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| 494 | *
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| 495 | * ========================================================================= */
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| 496 |
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| 497 | typedef struct
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| 498 | {
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| 499 | char *old_end; /* old ending */
|
---|
| 500 | char *new_end; /* new ending */
|
---|
| 501 | char old_offset; /* length of the old ending - 1 */
|
---|
| 502 | int (*cond) (); /* condition rule */
|
---|
| 503 | char end_group; /* signal the end of the group */
|
---|
| 504 | }
|
---|
| 505 | Recode_Rules;
|
---|
| 506 |
|
---|
| 507 | /*
|
---|
| 508 | Stem terminations are divided into groups having the same last
|
---|
| 509 | character
|
---|
| 510 | */
|
---|
| 511 |
|
---|
| 512 | static Recode_Rules Rules[] =
|
---|
| 513 | {
|
---|
| 514 | "uad", "uas", 2, NULL, 0,
|
---|
| 515 | "vad", "vas", 2, NULL, 0,
|
---|
| 516 | "cid", "cis", 2, NULL, 0,
|
---|
| 517 | "lid", "lis", 2, NULL, 0,
|
---|
| 518 | "erid", "eris", 3, NULL, 0,
|
---|
| 519 | "pand", "pans", 3, NULL, 0,
|
---|
| 520 | "end", "ens", 2, s, 0,
|
---|
| 521 | "end", "ens", 2, m, 0,
|
---|
| 522 | "ond", "ons", 2, NULL, 0,
|
---|
| 523 | "lud", "lus", 2, NULL, 0,
|
---|
| 524 | "rud", "rus", 2, NULL, 1,
|
---|
| 525 |
|
---|
| 526 | "ul", "l", 1, aio, 1,
|
---|
| 527 |
|
---|
| 528 | "istr", "ister", 3, NULL, 0,
|
---|
| 529 | "metr", "meter", 3, NULL, 0,
|
---|
| 530 | "her", "hes", 2, pt, 1,
|
---|
| 531 |
|
---|
| 532 | "urs", "ur", 2, NULL, 1,
|
---|
| 533 |
|
---|
| 534 | "uct", "uc", 2, NULL, 0,
|
---|
| 535 | "umpt", "um", 3, NULL, 0,
|
---|
| 536 | "rpt", "rb", 2, NULL, 0,
|
---|
| 537 | "mit", "mis", 2, NULL, 0,
|
---|
| 538 | "ert", "ers", 2, NULL, 0,
|
---|
| 539 | "et", "es", 1, n, 0,
|
---|
| 540 | "yt", "ys", 1, NULL, 1,
|
---|
| 541 |
|
---|
| 542 | "iev", "ief", 2, NULL, 0,
|
---|
| 543 | "olv", "olut", 2, NULL, 1,
|
---|
| 544 |
|
---|
| 545 | "bex", "bic", 2, NULL, 0,
|
---|
| 546 | "dex", "dic", 2, NULL, 0,
|
---|
| 547 | "pex", "pic", 2, NULL, 0,
|
---|
| 548 | "tex", "tic", 2, NULL, 0,
|
---|
| 549 | "ax", "ac", 1, NULL, 0,
|
---|
| 550 | "ex", "ec", 1, NULL, 0,
|
---|
| 551 | "ix", "ic", 1, NULL, 0,
|
---|
| 552 | "lux", "luc", 2, NULL, 1,
|
---|
| 553 |
|
---|
| 554 | "yz", "ys", 1, NULL, 1
|
---|
| 555 | };
|
---|
| 556 |
|
---|
| 557 | typedef struct last
|
---|
| 558 | {
|
---|
| 559 | char c; /* The last character */
|
---|
| 560 | struct last *left; /* used in balanced */
|
---|
| 561 | struct last *right; /* binary tree */
|
---|
| 562 | Recode_Rules *pt; /* location of approriate group */
|
---|
| 563 | }
|
---|
| 564 | Last_Char_Node;
|
---|
| 565 |
|
---|
| 566 | /*------------
|
---|
| 567 | s
|
---|
| 568 | / \
|
---|
| 569 | l x
|
---|
| 570 | / \ / \
|
---|
| 571 | d r t z
|
---|
| 572 | \
|
---|
| 573 | v
|
---|
| 574 | ---------------*/
|
---|
| 575 | static Last_Char_Node pr[] =
|
---|
| 576 | {
|
---|
| 577 | 'd', NULL, NULL, Rules,
|
---|
| 578 | 'l', pr, pr + 2, Rules + 11,
|
---|
| 579 | 'r', NULL, NULL, Rules + 12,
|
---|
| 580 | 's', pr + 1, pr + 6, Rules + 15,
|
---|
| 581 | 't', NULL, pr + 5, Rules + 16,
|
---|
| 582 | 'v', NULL, NULL, Rules + 23,
|
---|
| 583 | 'x', pr + 4, pr + 7, Rules + 25,
|
---|
| 584 | 'z', NULL, NULL, Rules + 33,
|
---|
| 585 | };
|
---|
| 586 |
|
---|
| 587 |
|
---|
| 588 | /*****************************************************************************
|
---|
| 589 | *
|
---|
| 590 | * Recode the stem according to the transformation rules.
|
---|
| 591 | *
|
---|
| 592 | *****************************************************************************/
|
---|
| 593 |
|
---|
| 594 | static void
|
---|
| 595 | recode_stem (char *stem_end)
|
---|
| 596 | {
|
---|
| 597 | static Last_Char_Node *root = pr + 3;
|
---|
| 598 | Last_Char_Node *p_last = root;
|
---|
| 599 | Recode_Rules *rule; /* points to the transformation list */
|
---|
| 600 | char *h, /* points to start of possible ending */
|
---|
| 601 | ch, /* last character of the old ending */
|
---|
| 602 | ch2;
|
---|
| 603 |
|
---|
| 604 | h = stem_end - 1;
|
---|
| 605 | ch = *stem_end;
|
---|
| 606 | if (*h == ch) /* Check for double consonant */
|
---|
| 607 | {
|
---|
| 608 | if (strchr ("bdglmnprst", ch) != NULL)
|
---|
| 609 | {
|
---|
| 610 | *stem_end = EOS;
|
---|
| 611 | stem_end = h;
|
---|
| 612 | }
|
---|
| 613 | }
|
---|
| 614 |
|
---|
| 615 | do /* Check for the last character */
|
---|
| 616 | {
|
---|
| 617 | ch2 = p_last->c;
|
---|
| 618 | if (ch == ch2)
|
---|
| 619 | break;
|
---|
| 620 | else if (ch > ch2)
|
---|
| 621 | p_last = p_last->right;
|
---|
| 622 | else
|
---|
| 623 | p_last = p_last->left;
|
---|
| 624 | }
|
---|
| 625 | while (p_last != NULL);
|
---|
| 626 |
|
---|
| 627 | if (p_last != NULL) /* Check for the rest of suffix list */
|
---|
| 628 | {
|
---|
| 629 | rule = p_last->pt;
|
---|
| 630 | for (;;)
|
---|
| 631 | {
|
---|
| 632 | h = stem_end - rule->old_offset;
|
---|
| 633 | if (strcmp (h, rule->old_end) == 0)
|
---|
| 634 | {
|
---|
| 635 | if (!rule->cond || (*rule->cond) (*(h - 1)))
|
---|
| 636 | {
|
---|
| 637 | (void) strcpy (h, rule->new_end);
|
---|
| 638 | break;
|
---|
| 639 | }
|
---|
| 640 | }
|
---|
| 641 | if (rule->end_group)
|
---|
| 642 | break;
|
---|
| 643 | rule++;
|
---|
| 644 | }
|
---|
| 645 | }
|
---|
| 646 | }
|
---|
| 647 |
|
---|
| 648 | /* ======================================================================
|
---|
| 649 |
|
---|
| 650 | * List of endings and the method to remove the ending
|
---|
| 651 | *
|
---|
| 652 | * ======================================================================*/
|
---|
| 653 |
|
---|
| 654 | /************ Data structures for list of endings ********************/
|
---|
| 655 |
|
---|
| 656 | typedef struct
|
---|
| 657 | {
|
---|
| 658 | char *ending; /* old ending */
|
---|
| 659 | int (*cond) (); /* conditional rule */
|
---|
| 660 | signed char left_offset; /* used to find the siblings */
|
---|
| 661 | signed char right_offset; /* in balanced binary tree */
|
---|
| 662 | }
|
---|
| 663 | Ending_List;
|
---|
| 664 |
|
---|
| 665 | /*
|
---|
| 666 | The original list of endings is re-organised into groups having
|
---|
| 667 | the same length and the same first character.
|
---|
| 668 | */
|
---|
| 669 |
|
---|
| 670 | static Ending_List List[] =
|
---|
| 671 | {
|
---|
| 672 | "a", NULL, 0, 0,
|
---|
| 673 |
|
---|
| 674 | "ae", NULL, 0, 0,
|
---|
| 675 | "al", BB, -1, 2,
|
---|
| 676 | "ar", X, 0, 0,
|
---|
| 677 | "as", B, -1, 0,
|
---|
| 678 |
|
---|
| 679 | "acy", NULL, 0, 1,
|
---|
| 680 | "age", B, 0, 0,
|
---|
| 681 | "aic", NULL, -2, 1,
|
---|
| 682 | "als", BB, 0, 0,
|
---|
| 683 | "ant", B, -2, 2,
|
---|
| 684 | "ars", O, 0, 0,
|
---|
| 685 | "ary", F, -1, 2,
|
---|
| 686 | "ata", NULL, 0, 0,
|
---|
| 687 | "ate", NULL, -1, 0,
|
---|
| 688 |
|
---|
| 689 | "able", NULL, 0, 1,
|
---|
| 690 | "ably", NULL, 0, 0,
|
---|
| 691 | "ages", B, -2, 2,
|
---|
| 692 | "ally", B, 0, 0,
|
---|
| 693 | "ance", B, -1, 1,
|
---|
| 694 | "ancy", B, 0, 0,
|
---|
| 695 | "ants", B, -4, 4,
|
---|
| 696 | "aric", NULL, 0, 0,
|
---|
| 697 | "arly", K, -1, 1,
|
---|
| 698 | "ated", I, 0, 0,
|
---|
| 699 | "ates", NULL, -2, 2,
|
---|
| 700 | "atic", B, 0, 0,
|
---|
| 701 | "ator", NULL, -1, 0,
|
---|
| 702 |
|
---|
| 703 | "acies", NULL, 0, 0,
|
---|
| 704 | "acity", NULL, -1, 1,
|
---|
| 705 | "aging", B, 0, 0,
|
---|
| 706 | "aical", NULL, -2, 2,
|
---|
| 707 | "alist", NULL, 0, 0,
|
---|
| 708 | "alism", B, -1, 0,
|
---|
| 709 | "ality", NULL, -3, 3,
|
---|
| 710 | "alize", NULL, 0, 1,
|
---|
| 711 | "allic", BB, 0, 0,
|
---|
| 712 | "anced", B, -2, 2,
|
---|
| 713 | "ances", B, 0, 0,
|
---|
| 714 | "antic", C, -1, 0,
|
---|
| 715 | "arial", NULL, -6, 6,
|
---|
| 716 | "aries", NULL, 0, 1,
|
---|
| 717 | "arily", NULL, 0, 0,
|
---|
| 718 | "arity", B, -2, 2,
|
---|
| 719 | "arize", NULL, 0, 0,
|
---|
| 720 | "aroid", NULL, -1, 0,
|
---|
| 721 | "ately", NULL, -3, 3,
|
---|
| 722 | "ating", I, 0, 1,
|
---|
| 723 | "ation", B, 0, 0,
|
---|
| 724 | "ative", NULL, -2, 2,
|
---|
| 725 | "ators", NULL, 0, 0,
|
---|
| 726 | "atory", NULL, -1, 1,
|
---|
| 727 | "ature", E, 0, 0,
|
---|
| 728 |
|
---|
| 729 | "aceous", NULL, 0, 1,
|
---|
| 730 | "acious", B, 0, 0,
|
---|
| 731 | "action", G, -2, 2,
|
---|
| 732 | "alness", NULL, 0, 0,
|
---|
| 733 | "ancial", NULL, -1, 1,
|
---|
| 734 | "ancies", NULL, 0, 0,
|
---|
| 735 | "ancing", B, -4, 4,
|
---|
| 736 | "ariser", NULL, 0, 0,
|
---|
| 737 | "arized", NULL, -1, 1,
|
---|
| 738 | "arizer", NULL, 0, 0,
|
---|
| 739 | "atable", NULL, -2, 2,
|
---|
| 740 | "ations", B, 0, 0,
|
---|
| 741 | "atives", NULL, -1, 0,
|
---|
| 742 |
|
---|
| 743 | "ability", NULL, 0, 1,
|
---|
| 744 | "aically", NULL, 0, 0,
|
---|
| 745 | "alistic", B, -2, 2,
|
---|
| 746 | "alities", NULL, 0, 0,
|
---|
| 747 | "ariness", E, -1, 0,
|
---|
| 748 | "aristic", NULL, -3, 3,
|
---|
| 749 | "arizing", NULL, 0, 1,
|
---|
| 750 | "ateness", NULL, 0, 0,
|
---|
| 751 | "atingly", NULL, -2, 2,
|
---|
| 752 | "ational", B, 0, 0,
|
---|
| 753 | "atively", NULL, -1, 1,
|
---|
| 754 | "ativism", NULL, 0, 0,
|
---|
| 755 |
|
---|
| 756 | "ableness", NULL, 0, 1,
|
---|
| 757 | "arizable", NULL, 0, 0,
|
---|
| 758 |
|
---|
| 759 | "allically", C, 0, 0,
|
---|
| 760 | "antaneous", NULL, -1, 1,
|
---|
| 761 | "antiality", NULL, 0, 0,
|
---|
| 762 | "arisation", NULL, -2, 2,
|
---|
| 763 | "arization", NULL, 0, 0,
|
---|
| 764 | "ationally", B, -1, 1,
|
---|
| 765 | "ativeness", NULL, 0, 0,
|
---|
| 766 |
|
---|
| 767 | "antialness", NULL, 0, 0,
|
---|
| 768 | "arisations", NULL, -1, 1,
|
---|
| 769 | "arizations", NULL, 0, 0,
|
---|
| 770 |
|
---|
| 771 | "alistically", B, 0, 1,
|
---|
| 772 | "arizability", NULL, 0, 0,
|
---|
| 773 |
|
---|
| 774 | "e", NULL, 0, 0,
|
---|
| 775 |
|
---|
| 776 | "ed", E, 0, 0,
|
---|
| 777 | "en", F, -1, 1,
|
---|
| 778 | "es", E, 0, 0,
|
---|
| 779 |
|
---|
| 780 | "eal", Y, 0, 0,
|
---|
| 781 | "ear", Y, -1, 1,
|
---|
| 782 | "ely", E, 0, 0,
|
---|
| 783 | "ene", E, -2, 2,
|
---|
| 784 | "ent", C, 0, 0,
|
---|
| 785 | "ery", E, -1, 1,
|
---|
| 786 | "ese", NULL, 0, 0,
|
---|
| 787 |
|
---|
| 788 | "ealy", Y, 0, 1,
|
---|
| 789 | "edly", E, 0, 0,
|
---|
| 790 | "eful", NULL, -2, 1,
|
---|
| 791 | "eity", NULL, 0, 0,
|
---|
| 792 | "ence", NULL, -2, 2,
|
---|
| 793 | "ency", NULL, 0, 0,
|
---|
| 794 | "ened", E, -1, 2,
|
---|
| 795 | "enly", E, 0, 0,
|
---|
| 796 | "eous", NULL, -1, 0,
|
---|
| 797 |
|
---|
| 798 | "early", Y, 0, 1,
|
---|
| 799 | "ehood", NULL, 0, 0,
|
---|
| 800 | "eless", NULL, -2, 2,
|
---|
| 801 | "elity", NULL, 0, 0,
|
---|
| 802 | "ement", NULL, -1, 0,
|
---|
| 803 | "enced", NULL, -3, 3,
|
---|
| 804 | "ences", NULL, 0, 1,
|
---|
| 805 | "eness", E, 0, 0,
|
---|
| 806 | "ening", E, -2, 2,
|
---|
| 807 | "ental", NULL, 0, 0,
|
---|
| 808 | "ented", C, -1, 1,
|
---|
| 809 | "ently", NULL, 0, 0,
|
---|
| 810 |
|
---|
| 811 | "eature", Z, 0, 0,
|
---|
| 812 | "efully", NULL, -1, 1,
|
---|
| 813 | "encies", NULL, 0, 0,
|
---|
| 814 | "encing", NULL, -2, 2,
|
---|
| 815 | "ential", NULL, 0, 0,
|
---|
| 816 | "enting", C, -1, 1,
|
---|
| 817 | "entist", NULL, 0, 1,
|
---|
| 818 | "eously", NULL, 0, 0,
|
---|
| 819 |
|
---|
| 820 | "elihood", E, 0, 1,
|
---|
| 821 | "encible", NULL, 0, 0,
|
---|
| 822 | "entally", NULL, -2, 2,
|
---|
| 823 | "entials", NULL, 0, 0,
|
---|
| 824 | "entiate", NULL, -1, 1,
|
---|
| 825 | "entness", NULL, 0, 0,
|
---|
| 826 |
|
---|
| 827 | "entation", NULL, 0, 0,
|
---|
| 828 | "entially", NULL, -1, 1,
|
---|
| 829 | "eousness", NULL, 0, 0,
|
---|
| 830 |
|
---|
| 831 | "eableness", E, 0, 1,
|
---|
| 832 | "entations", NULL, 0, 0,
|
---|
| 833 | "entiality", NULL, -2, 2,
|
---|
| 834 | "entialize", NULL, 0, 0,
|
---|
| 835 | "entiation", NULL, -1, 0,
|
---|
| 836 |
|
---|
| 837 | "entialness", NULL, 0, 0,
|
---|
| 838 |
|
---|
| 839 | "ful", NULL, 0, 0,
|
---|
| 840 |
|
---|
| 841 | "fully", NULL, 0, 0,
|
---|
| 842 |
|
---|
| 843 | "fulness", NULL, 0, 0,
|
---|
| 844 |
|
---|
| 845 | "hood", NULL, 0, 0,
|
---|
| 846 |
|
---|
| 847 | "i", NULL, 0, 0,
|
---|
| 848 |
|
---|
| 849 | "ia", NULL, 0, 0,
|
---|
| 850 | "ic", NULL, -1, 1,
|
---|
| 851 | "is", NULL, 0, 0,
|
---|
| 852 |
|
---|
| 853 | "ial", NULL, 0, 0,
|
---|
| 854 | "ian", NULL, -1, 1,
|
---|
| 855 | "ics", NULL, 0, 1,
|
---|
| 856 | "ide", L, 0, 0,
|
---|
| 857 | "ied", NULL, -3, 3,
|
---|
| 858 | "ier", NULL, 0, 0,
|
---|
| 859 | "ies", P, -1, 0,
|
---|
| 860 | "ily", NULL, -1, 1,
|
---|
| 861 | "ine", M, 0, 0,
|
---|
| 862 | "ing", N, -5, 5,
|
---|
| 863 | "ion", Q, 0, 0,
|
---|
| 864 | "ish", C, -1, 1,
|
---|
| 865 | "ism", B, 0, 1,
|
---|
| 866 | "ist", NULL, 0, 0,
|
---|
| 867 | "ite", AA, -3, 3,
|
---|
| 868 | "ity", NULL, 0, 0,
|
---|
| 869 | "ium", NULL, -1, 0,
|
---|
| 870 | "ive", NULL, -1, 1,
|
---|
| 871 | "ize", F, 0, 0,
|
---|
| 872 |
|
---|
| 873 | "ials", NULL, 0, 0,
|
---|
| 874 | "ians", NULL, -1, 0,
|
---|
| 875 | "ible", NULL, -1, 1,
|
---|
| 876 | "ibly", NULL, 0, 0,
|
---|
| 877 | "ical", NULL, -2, 2,
|
---|
| 878 | "ides", L, 0, 0,
|
---|
| 879 | "iers", NULL, -1, 1,
|
---|
| 880 | "iful", NULL, 0, 0,
|
---|
| 881 | "ines", M, -4, 4,
|
---|
| 882 | "ings", N, 0, 0,
|
---|
| 883 | "ions", B, -1, 1,
|
---|
| 884 | "ious", NULL, 0, 0,
|
---|
| 885 | "isms", B, -2, 2,
|
---|
| 886 | "ists", NULL, 0, 0,
|
---|
| 887 | "itic", H, -1, 1,
|
---|
| 888 | "ized", F, 0, 1,
|
---|
| 889 | "izer", F, 0, 0,
|
---|
| 890 |
|
---|
| 891 | "ially", NULL, 0, 0,
|
---|
| 892 | "icant", NULL, -1, 1,
|
---|
| 893 | "ician", NULL, 0, 0,
|
---|
| 894 | "icide", NULL, -2, 2,
|
---|
| 895 | "icism", NULL, 0, 0,
|
---|
| 896 | "icist", NULL, -1, 0,
|
---|
| 897 | "icity", NULL, -3, 3,
|
---|
| 898 | "idine", I, 0, 1,
|
---|
| 899 | "iedly", NULL, 0, 0,
|
---|
| 900 | "ihood", NULL, -2, 2,
|
---|
| 901 | "inate", NULL, 0, 0,
|
---|
| 902 | "iness", NULL, -1, 0,
|
---|
| 903 | "ingly", B, -6, 6,
|
---|
| 904 | "inism", J, 0, 1,
|
---|
| 905 | "inity", CC, 0, 0,
|
---|
| 906 | "ional", NULL, -2, 2,
|
---|
| 907 | "ioned", NULL, 0, 0,
|
---|
| 908 | "ished", NULL, -1, 0,
|
---|
| 909 | "istic", NULL, -3, 3,
|
---|
| 910 | "ities", NULL, 0, 1,
|
---|
| 911 | "itous", NULL, 0, 0,
|
---|
| 912 | "ively", NULL, -2, 2,
|
---|
| 913 | "ivity", NULL, 0, 0,
|
---|
| 914 | "izers", F, -1, 1,
|
---|
| 915 | "izing", F, 0, 0,
|
---|
| 916 |
|
---|
| 917 | "ialist", NULL, 0, 0,
|
---|
| 918 | "iality", NULL, -1, 1,
|
---|
| 919 | "ialize", NULL, 0, 0,
|
---|
| 920 | "ically", NULL, -2, 2,
|
---|
| 921 | "icance", NULL, 0, 0,
|
---|
| 922 | "icians", NULL, -1, 1,
|
---|
| 923 | "icists", NULL, 0, 0,
|
---|
| 924 | "ifully", NULL, -4, 4,
|
---|
| 925 | "ionals", NULL, 0, 0,
|
---|
| 926 | "ionate", D, -1, 1,
|
---|
| 927 | "ioning", NULL, 0, 0,
|
---|
| 928 | "ionist", NULL, -2, 2,
|
---|
| 929 | "iously", NULL, 0, 0,
|
---|
| 930 | "istics", NULL, -1, 1,
|
---|
| 931 | "izable", E, 0, 0,
|
---|
| 932 |
|
---|
| 933 | "ibility", NULL, 0, 0,
|
---|
| 934 | "icalism", NULL, -1, 1,
|
---|
| 935 | "icalist", NULL, 0, 1,
|
---|
| 936 | "icality", NULL, 0, 0,
|
---|
| 937 | "icalize", NULL, -3, 3,
|
---|
| 938 | "ication", G, 0, 0,
|
---|
| 939 | "icianry", NULL, -1, 0,
|
---|
| 940 | "ination", NULL, -1, 1,
|
---|
| 941 | "ingness", NULL, 0, 0,
|
---|
| 942 | "ionally", NULL, -5, 5,
|
---|
| 943 | "isation", NULL, 0, 0,
|
---|
| 944 | "ishness", NULL, -1, 1,
|
---|
| 945 | "istical", NULL, 0, 1,
|
---|
| 946 | "iteness", NULL, 0, 0,
|
---|
| 947 | "iveness", NULL, -3, 3,
|
---|
| 948 | "ivistic", NULL, 0, 0,
|
---|
| 949 | "ivities", NULL, -1, 0,
|
---|
| 950 | "ization", F, -1, 1,
|
---|
| 951 | "izement", NULL, 0, 0,
|
---|
| 952 |
|
---|
| 953 | "ibleness", NULL, 0, 0,
|
---|
| 954 | "icalness", NULL, -1, 1,
|
---|
| 955 | "ionalism", NULL, 0, 0,
|
---|
| 956 | "ionality", NULL, -2, 2,
|
---|
| 957 | "ionalize", NULL, 0, 0,
|
---|
| 958 | "iousness", NULL, -1, 1,
|
---|
| 959 | "izations", NULL, 0, 0,
|
---|
| 960 |
|
---|
| 961 | "ionalness", NULL, 0, 1,
|
---|
| 962 | "istically", NULL, 0, 0,
|
---|
| 963 | "itousness", NULL, -2, 2,
|
---|
| 964 | "izability", NULL, 0, 0,
|
---|
| 965 | "izational", NULL, -1, 0,
|
---|
| 966 |
|
---|
| 967 | "izationally", B, 0, 0,
|
---|
| 968 |
|
---|
| 969 | "ly", B, 0, 0,
|
---|
| 970 |
|
---|
| 971 | "less", NULL, 0, 1,
|
---|
| 972 | "lily", NULL, 0, 0,
|
---|
| 973 |
|
---|
| 974 | "lessly", NULL, 0, 0,
|
---|
| 975 |
|
---|
| 976 | "lessness", NULL, 0, 0,
|
---|
| 977 |
|
---|
| 978 | "ness", NULL, 0, 0,
|
---|
| 979 |
|
---|
| 980 | "nesses", NULL, 0, 0,
|
---|
| 981 |
|
---|
| 982 | "o", NULL, 0, 0,
|
---|
| 983 |
|
---|
| 984 | "on", S, 0, 1,
|
---|
| 985 | "or", T, 0, 0,
|
---|
| 986 |
|
---|
| 987 | "oid", NULL, 0, 0,
|
---|
| 988 | "one", R, -1, 1,
|
---|
| 989 | "ous", NULL, 0, 0,
|
---|
| 990 |
|
---|
| 991 | "ogen", NULL, 0, 0,
|
---|
| 992 |
|
---|
| 993 | "oidal", NULL, 0, 0,
|
---|
| 994 | "oides", NULL, -1, 2,
|
---|
| 995 | "otide", NULL, 0, 0,
|
---|
| 996 | "ously", NULL, -1, 0,
|
---|
| 997 |
|
---|
| 998 | "oidism", NULL, 0, 0,
|
---|
| 999 |
|
---|
| 1000 | "oidally", NULL, 0, 1,
|
---|
| 1001 | "ousness", NULL, 0, 0,
|
---|
| 1002 |
|
---|
| 1003 | "s", W, 0, 0,
|
---|
| 1004 |
|
---|
| 1005 | "s'", NULL, 0, 0,
|
---|
| 1006 |
|
---|
| 1007 | "um", U, 0, 1,
|
---|
| 1008 | "us", V, 0, 0,
|
---|
| 1009 |
|
---|
| 1010 | "ward", NULL, 0, 1,
|
---|
| 1011 | "wise", NULL, 0, 0,
|
---|
| 1012 |
|
---|
| 1013 | "y", B, 0, 0,
|
---|
| 1014 |
|
---|
| 1015 | "yl", R, 0, 0,
|
---|
| 1016 |
|
---|
| 1017 | "ying", B, 0, 1,
|
---|
| 1018 | "yish", NULL, 0, 0,
|
---|
| 1019 |
|
---|
| 1020 | "'s", NULL, 0, 0,
|
---|
| 1021 | };
|
---|
| 1022 |
|
---|
| 1023 | typedef struct node
|
---|
| 1024 | {
|
---|
| 1025 | char c; /* First character */
|
---|
| 1026 | struct node *left; /* used in balanced */
|
---|
| 1027 | struct node *right; /* binary tree */
|
---|
| 1028 | Ending_List *ptr[11]; /* the approriate location */
|
---|
| 1029 | }
|
---|
| 1030 | First_Char_Node;
|
---|
| 1031 |
|
---|
| 1032 | static First_Char_Node First[] =
|
---|
| 1033 | {
|
---|
| 1034 | '\'', NULL, NULL,
|
---|
| 1035 | {NULL,
|
---|
| 1036 | List + 293, NULL, NULL, NULL, NULL,
|
---|
| 1037 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1038 |
|
---|
| 1039 | 'a', First, NULL,
|
---|
| 1040 | {List,
|
---|
| 1041 | List + 2, List + 9, List + 20, List + 39, List + 58,
|
---|
| 1042 | List + 70, List + 77, List + 82, List + 87, List + 89},
|
---|
| 1043 |
|
---|
| 1044 | 'e', First + 1, First + 4,
|
---|
| 1045 | {List + 91,
|
---|
| 1046 | List + 93, List + 98, List + 106, List + 116, List + 126,
|
---|
| 1047 | List + 133, List + 138, List + 142, List + 145, NULL},
|
---|
| 1048 |
|
---|
| 1049 | 'f', NULL, NULL,
|
---|
| 1050 | {NULL,
|
---|
| 1051 | NULL, List + 146, NULL, List + 147, NULL,
|
---|
| 1052 | List + 148, NULL, NULL, NULL, NULL},
|
---|
| 1053 |
|
---|
| 1054 | 'h', First + 3, First + 5,
|
---|
| 1055 | {NULL,
|
---|
| 1056 | NULL, NULL, List + 149, NULL, NULL,
|
---|
| 1057 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1058 |
|
---|
| 1059 | 'i', NULL, NULL,
|
---|
| 1060 | {List + 150,
|
---|
| 1061 | List + 152, List + 163, List + 181, List + 202, List + 222,
|
---|
| 1062 | List + 239, List + 252, List + 258, NULL, List + 261},
|
---|
| 1063 |
|
---|
| 1064 | 'l', First + 2, First + 10,
|
---|
| 1065 | {NULL,
|
---|
| 1066 | List + 262, NULL, List + 263, NULL, List + 265,
|
---|
| 1067 | NULL, List + 266, NULL, NULL, NULL},
|
---|
| 1068 |
|
---|
| 1069 | 'n', NULL, NULL,
|
---|
| 1070 | {NULL,
|
---|
| 1071 | NULL, NULL, List + 267, NULL, List + 268,
|
---|
| 1072 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1073 |
|
---|
| 1074 | 'o', First + 7, First + 9,
|
---|
| 1075 | {List + 269,
|
---|
| 1076 | List + 270, List + 273, List + 275, List + 277, List + 280,
|
---|
| 1077 | List + 281, NULL, NULL, NULL, NULL},
|
---|
| 1078 |
|
---|
| 1079 | 's', NULL, NULL,
|
---|
| 1080 | {List + 283,
|
---|
| 1081 | List + 284, NULL, NULL, NULL, NULL,
|
---|
| 1082 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1083 |
|
---|
| 1084 | 'u', First + 8, First + 12,
|
---|
| 1085 | {NULL,
|
---|
| 1086 | List + 285, NULL, NULL, NULL, NULL,
|
---|
| 1087 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1088 |
|
---|
| 1089 | 'w', NULL, NULL,
|
---|
| 1090 | {NULL,
|
---|
| 1091 | NULL, NULL, List + 287, NULL, NULL,
|
---|
| 1092 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1093 |
|
---|
| 1094 | 'y', First + 11, NULL,
|
---|
| 1095 | {List + 289,
|
---|
| 1096 | List + 290, NULL, List + 291, NULL, NULL,
|
---|
| 1097 | NULL, NULL, NULL, NULL, NULL},
|
---|
| 1098 | };
|
---|
| 1099 |
|
---|
| 1100 |
|
---|
| 1101 | /******************************************************************************
|
---|
| 1102 | *
|
---|
| 1103 | * Look for a match in the suffix list.
|
---|
| 1104 | * Return the pointer to the end of the new stem if there is a match.
|
---|
| 1105 | * Otherwise, return the pointer to the end of the original word.
|
---|
| 1106 | *
|
---|
| 1107 | * Method:
|
---|
| 1108 | * * Search for the first character in the suffix list.
|
---|
| 1109 | * * If there is match, search for the rest of the suffix list.
|
---|
| 1110 | *
|
---|
| 1111 | *****************************************************************************/
|
---|
| 1112 |
|
---|
| 1113 | static char *
|
---|
| 1114 | remove_ending (char *word, int w_len)
|
---|
| 1115 | {
|
---|
| 1116 | static First_Char_Node *root = First + 6; /* the root of binary tree is 'l' */
|
---|
| 1117 | First_Char_Node *p_first; /* Points to the first character */
|
---|
| 1118 | /* of the possible suffix */
|
---|
| 1119 | Ending_List *p_list; /* Points to the List of Endings */
|
---|
| 1120 | char *suffix_start, /* Points to start of possible suffix */
|
---|
| 1121 | *stem_end, /* Points to the end of possible stem */
|
---|
| 1122 | ch1, ch2;
|
---|
| 1123 | int s_len, /* Possible stem length */
|
---|
| 1124 | e_offset, /* Offset from the end to the start of */
|
---|
| 1125 | /* possible suffix */
|
---|
| 1126 | not_done = 1, cmp;
|
---|
| 1127 |
|
---|
| 1128 | stem_end = word + w_len - 1;
|
---|
| 1129 | if (w_len > PREDEFINED_SIZE) /* find the start of suffix */
|
---|
| 1130 | suffix_start = word + w_len - MAX_ENDING_SIZE;
|
---|
| 1131 | else
|
---|
| 1132 | suffix_start = word + MIN_STEM_LENGTH;
|
---|
| 1133 |
|
---|
| 1134 | ch1 = *suffix_start;
|
---|
| 1135 | do /* Search for the first character */
|
---|
| 1136 | {
|
---|
| 1137 | p_first = root;
|
---|
| 1138 | do
|
---|
| 1139 | {
|
---|
| 1140 | ch2 = p_first->c;
|
---|
| 1141 | if (ch1 == ch2)
|
---|
| 1142 | break;
|
---|
| 1143 | else if (ch1 > ch2)
|
---|
| 1144 | p_first = p_first->right;
|
---|
| 1145 | else
|
---|
| 1146 | p_first = p_first->left;
|
---|
| 1147 | }
|
---|
| 1148 | while (p_first != NULL);
|
---|
| 1149 |
|
---|
| 1150 | if (p_first != NULL) /* Search for the rest */
|
---|
| 1151 | {
|
---|
| 1152 | e_offset = stem_end - suffix_start;
|
---|
| 1153 | if ((p_list = p_first->ptr[e_offset]) != NULL)
|
---|
| 1154 | {
|
---|
| 1155 | for (;;) /* no need to compare the first char */
|
---|
| 1156 | {
|
---|
| 1157 | cmp = strcmp (suffix_start + 1, p_list->ending + 1);
|
---|
| 1158 | if (cmp > 0)
|
---|
| 1159 | if (p_list->right_offset)
|
---|
| 1160 | p_list += p_list->right_offset;
|
---|
| 1161 | else
|
---|
| 1162 | break;
|
---|
| 1163 | else if (cmp < 0)
|
---|
| 1164 | if (p_list->left_offset)
|
---|
| 1165 | p_list += p_list->left_offset;
|
---|
| 1166 | else
|
---|
| 1167 | break;
|
---|
| 1168 | else
|
---|
| 1169 | {
|
---|
| 1170 | s_len = suffix_start - word;
|
---|
| 1171 | if (!p_list->cond ||
|
---|
| 1172 | (*p_list->cond) (s_len, suffix_start - 1))
|
---|
| 1173 | {
|
---|
| 1174 | *suffix_start = EOS;
|
---|
| 1175 | stem_end = suffix_start - 1;
|
---|
| 1176 | not_done = 0;
|
---|
| 1177 | }
|
---|
| 1178 | break;
|
---|
| 1179 | }
|
---|
| 1180 | }
|
---|
| 1181 | }
|
---|
| 1182 | }
|
---|
| 1183 | suffix_start++;
|
---|
| 1184 | }
|
---|
| 1185 | while (not_done && ((ch1 = *suffix_start) != EOS));
|
---|
| 1186 | return (stem_end);
|
---|
| 1187 | }
|
---|