summaryrefslogtreecommitdiffstats
path: root/tdespell2/plugins/ispell/tgood.cpp
blob: 06fbc99efa40585b9b4491dcf804a836d6394537 (plain)
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
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
/* vim: set sw=8: -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* enchant
 * Copyright (C) 2003 Dom Lachowicz
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the
 * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 * In addition, as a special exception, Dom Lachowicz
 * gives permission to link the code of this program with
 * non-LGPL Spelling Provider libraries (eg: a MSFT Office
 * spell checker backend) and distribute linked combinations including
 * the two.  You must obey the GNU Lesser General Public License in all
 * respects for all of the code used other than said providers.  If you modify
 * this file, you may extend this exception to your version of the
 * file, but you are not obligated to do so.  If you do not wish to
 * do so, delete this exception statement from your version.
 */

/*
 * Copyright 1987, 1988, 1989, 1992, 1993, Geoff Kuenning, Granada Hills, CA
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All modifications to the source code must be clearly marked as
 *    such.  Binary redistributions based on modified source code
 *    must be clearly marked as modified versions in the documentation
 *    and/or other materials provided with the distribution.
 * 4. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgment:
 *      This product includes software developed by Geoff Kuenning and
 *      other unpaid contributors.
 * 5. The name of Geoff Kuenning may not be used to endorse or promote
 *    products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY GEOFF KUENNING AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL GEOFF KUENNING OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

/*
 * Table-driven version of good.c.
 *
 * Geoff Kuenning, July 1987
 */

/*
 * $Log$
 * Revision 1.1  2004/01/31 16:44:12  zrusin
 * ISpell plugin.
 *
 * Revision 1.4  2003/08/14 17:51:29  dom
 * update license - exception clause should be Lesser GPL
 *
 * Revision 1.3  2003/07/28 20:40:28  dom
 * fix up the license clause, further win32-registry proof some directory getting functions
 *
 * Revision 1.2  2003/07/16 22:52:56  dom
 * LGPL + exception license
 *
 * Revision 1.1  2003/07/15 01:15:09  dom
 * ispell enchant backend
 *
 * Revision 1.2  2003/01/29 05:50:12  hippietrail
 *
 * Fixed my mess in EncodingManager.
 * Changed many C casts to C++ casts.
 *
 * Revision 1.1  2003/01/24 05:52:36  hippietrail
 *
 * Refactored ispell code. Old ispell global variables had been put into
 * an allocated structure, a pointer to which was passed to many functions.
 * I have now made all such functions and variables private members of the
 * ISpellChecker class. It was C OO, now it's C++ OO.
 *
 * I've fixed the makefiles and tested compilation but am unable to test
 * operation. Please back out my changes if they cause problems which
 * are not obvious or easy to fix.
 *
 * Revision 1.6  2003/01/06 18:48:42  dom
 * ispell cleanup, start of using new 'add' save features
 *
 * Revision 1.5  2002/09/19 05:31:20  hippietrail
 *
 * More Ispell cleanup.  Conditional globals and DEREF macros are removed.
 * K&R function declarations removed, converted to Doxygen style comments
 * where possible.  No code has been changed (I hope).  Compiles for me but
 * unable to test.
 *
 * Revision 1.4  2002/09/17 03:03:31  hippietrail
 *
 * After seeking permission on the developer list I've reformatted all the
 * spelling source which seemed to have parts which used 2, 3, 4, and 8
 * spaces for tabs.  It should all look good with our standard 4-space
 * tabs now.
 * I've concentrated just on indentation in the actual code.  More prettying
 * could be done.
 * * NO code changes were made *
 *
 * Revision 1.3  2002/09/13 17:20:14  mpritchett
 * Fix more warnings for Linux build
 *
 * Revision 1.2  2001/05/12 16:05:42  thomasf
 * Big pseudo changes to ispell to make it pass around a structure rather
 * than rely on all sorts of gloabals willy nilly here and there.  Also
 * fixed our spelling class to work with accepting suggestions once more.
 * This code is dirty, gross and ugly (not to mention still not supporting
 * multiple hash sized just yet) but it works on my machine and will no
 * doubt break other machines.
 *
 * Revision 1.1  2001/04/15 16:01:24  tomas_f
 * moving to spell/xp
 *
 * Revision 1.7  1999/10/20 06:03:56  sterwill
 * Changed C++-style comments to C-style comments in C code.
 *
 * Revision 1.6  1999/10/20 03:19:35  paul
 * Hacked ispell code to ignore any characters that don't fit in the lookup tables loaded from the dictionary.  It ain't pretty, but at least we don't crash there any more.
 *
 * Revision 1.5  1999/04/13 17:12:51  jeff
 * Applied "Darren O. Benham" <gecko@benham.net> spell check changes.
 * Fixed crash on Win32 with the new code.
 *
 * Revision 1.4  1998/12/29 14:55:33  eric
 *
 * I've doctored the ispell code pretty extensively here.  It is now
 * warning-free on Win32.  It also *works* on Win32 now, since I
 * replaced all the I/O calls with ANSI standard ones.
 *
 * Revision 1.4  1998/12/29 14:55:33  eric
 *
 * I've doctored the ispell code pretty extensively here.  It is now
 * warning-free on Win32.  It also *works* on Win32 now, since I
 * replaced all the I/O calls with ANSI standard ones.
 *
 * Revision 1.3  1998/12/28 23:11:30  eric
 *
 * modified spell code and integration to build on Windows.
 * This is still a hack.
 *
 * Actually, it doesn't yet WORK on Windows.  It just builds.
 * SpellCheckInit is failing for some reason.
 *
 * Revision 1.2  1998/12/28 22:16:22  eric
 *
 * These changes begin to incorporate the spell checker into AbiWord.  Most
 * of this is a hack.
 *
 * 1.  added other/spell to the -I list in config/abi_defs
 * 2.  replaced other/spell/Makefile with one which is more like
 * 	our build system.
 * 3.  added other/spell to other/Makefile so that the build will now
 * 	dive down and build the spell check library.
 * 4.  added the AbiSpell library to the Makefiles in wp/main
 * 5.  added a call to SpellCheckInit in wp/main/unix/UnixMain.cpp.
 * 	This call is a HACK and should be replaced with something
 * 	proper later.
 * 6.  added code to fv_View.cpp as follows:
 * 	whenever you double-click on a word, the spell checker
 * 	verifies that word and prints its status to stdout.
 *
 * Caveats:
 * 1.  This will break the Windows build.  I'm going to work on fixing it
 * 	now.
 * 2.  This only works if your dictionary is in /usr/lib/ispell/american.hash.
 * 	The dictionary location is currently hard-coded.  This will be
 * 	fixed as well.
 *
 * Anyway, such as it is, it works.
 *
 * Revision 1.1  1998/12/28 18:04:43  davet
 * Spell checker code stripped from ispell.  At this point, there are
 * two external routines...  the Init routine, and a check-a-word routine
 * which returns a boolean value, and takes a 16 bit char string.
 * The code resembles the ispell code as much as possible still.
 *
 * Revision 1.32  1994/11/02  06:56:16  geoff
 * Remove the anyword feature, which I've decided is a bad idea.
 *
 * Revision 1.31  1994/10/25  05:46:25  geoff
 * Add support for the FF_ANYWORD (affix applies to all words, even if
 * flag bit isn't set) flag option.
 *
 * Revision 1.30  1994/05/24  06:23:08  geoff
 * Don't create a hit if "allhits" is clear and capitalization
 * mismatches.  This cures a bug where a word could be in the dictionary
 * and yet not found.
 *
 * Revision 1.29  1994/05/17  06:44:21  geoff
 * Add support for controlled compound formation and the COMPOUNDONLY
 * option to affix flags.
 *
 * Revision 1.28  1994/01/25  07:12:13  geoff
 * Get rid of all old RCS log lines in preparation for the 3.1 release.
 *
 */

#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#include "ispell_checker.h"

/*!
 * Check possible affixes
 *
 * \param word Word to be checked
 * \param ucword Upper-case-only copy of word
 * \param len The length of word/ucword
 * \param ignoreflagbits Ignore whether affix is legal
 * \param allhits Keep going after first hit
 * \param pfxopts Options to apply to prefixes
 * \param sfxopts Options to apply to suffixes
 */
void ISpellChecker::chk_aff (ichar_t *word, ichar_t *ucword, 
			  int len, int ignoreflagbits, int allhits, int pfxopts, int sfxopts)
{
    register ichar_t *	cp;		/* Pointer to char to index on */
    struct flagptr *	ind;		/* Flag index table to test */

    pfx_list_chk (word, ucword, len, pfxopts, sfxopts, &m_pflagindex[0],
      ignoreflagbits, allhits);
    cp = ucword;
	/* HACK: bail on unrecognized chars */
	if (*cp >= (SET_SIZE + MAXSTRINGCHARS))
		return;
    ind = &m_pflagindex[*cp++];
    while (ind->numents == 0  &&  ind->pu.fp != NULL)
	{
		if (*cp == 0)
			return;
		if (ind->pu.fp[0].numents)
		{
			pfx_list_chk (word, ucword, len, pfxopts, sfxopts, &ind->pu.fp[0],
			  ignoreflagbits, allhits);
			if (m_numhits  &&  !allhits  &&  /* !cflag  && */  !ignoreflagbits)
				return;
		}
		/* HACK: bail on unrecognized chars */
		if (*cp >= (SET_SIZE + MAXSTRINGCHARS))
			return;
		ind = &ind->pu.fp[*cp++];
	}
    pfx_list_chk (word, ucword, len, pfxopts, sfxopts, ind, ignoreflagbits,
      allhits);
    if (m_numhits  &&  !allhits  &&  /* !cflag  &&*/  !ignoreflagbits)
		return;
    chk_suf (word, ucword, len, sfxopts, static_cast<struct flagent *>(NULL),
      ignoreflagbits, allhits);
}

/*!
 * Check some prefix flags
 *
 * \param word Word to be checked
 * \param ucword Upper-case-only word
 * \param len The length of ucword
 * \param optflags Options to apply
 * \param sfxopts Options to apply to suffixes
 * \param ind Flag index table
 * \param ignoreflagbits Ignore whether affix is legal
 * \param allhits Keep going after first hit
 * */
void ISpellChecker::pfx_list_chk (ichar_t *word, ichar_t *ucword, int len, int optflags, 
					int sfxopts, struct flagptr * ind, int ignoreflagbits, int allhits)
{
    int			cond;		/* Condition number */
    register ichar_t *	cp;		/* Pointer into end of ucword */
    struct dent *	dent;		/* Dictionary entry we found */
    int			entcount;	/* Number of entries to process */
    register struct flagent *
			flent;		/* Current table entry */
    int			preadd;		/* Length added to tword2 as prefix */
    register int	tlen;		/* Length of tword */
    ichar_t		tword[INPUTWORDLEN + 4 * MAXAFFIXLEN + 4]; /* Tmp cpy */
    ichar_t		tword2[sizeof tword]; /* 2nd copy for ins_root_cap */

    for (flent = ind->pu.ent, entcount = ind->numents;
      entcount > 0;
      flent++, entcount--)
	{
		/*
		 * If this is a compound-only affix, ignore it unless we're
		 * looking for that specific thing.
		 */
		if ((flent->flagflags & FF_COMPOUNDONLY) != 0
		  &&  (optflags & FF_COMPOUNDONLY) == 0)
			continue;

		/*
		 * See if the prefix matches.
		 */
		tlen = len - flent->affl;
		if (tlen > 0
		  &&  (flent->affl == 0
			||  icharncmp (flent->affix, ucword, flent->affl) == 0)
		  &&  tlen + flent->stripl >= flent->numconds)
		{
			/*
			 * The prefix matches.  Remove it, replace it by the "strip"
			 * string (if any), and check the original conditions.
			 */
			if (flent->stripl)
				icharcpy (tword, flent->strip);
			icharcpy (tword + flent->stripl, ucword + flent->affl);
			cp = tword;
			for (cond = 0;  cond < flent->numconds;  cond++)
			{
				if ((flent->conds[*cp++] & (1 << cond)) == 0)
					break;
			}
			if (cond >= flent->numconds)
			{
				/*
				 * The conditions match.  See if the word is in the
				 * dictionary.
				 */
				tlen += flent->stripl;

				if (ignoreflagbits)
				{
					if ((dent = ispell_lookup (tword, 1)) != NULL)
					{
						cp = tword2;
						if (flent->affl)
						{
							icharcpy (cp, flent->affix);
							cp += flent->affl;
							*cp++ = '+';
						}
						preadd = cp - tword2;
						icharcpy (cp, tword);
						cp += tlen;
						if (flent->stripl)
						{
							*cp++ = '-';
							icharcpy (cp, flent->strip);
						}
					}
				}
				else if ((dent = ispell_lookup (tword, 1)) != NULL
				  &&  TSTMASKBIT (dent->mask, flent->flagbit))
				{
					if (m_numhits < MAX_HITS)
					{
						m_hits[m_numhits].dictent = dent;
						m_hits[m_numhits].prefix = flent;
						m_hits[m_numhits].suffix = NULL;
						m_numhits++;
					}
					if (!allhits)
					{
#ifndef NO_CAPITALIZATION_SUPPORT
						if (cap_ok (word, &m_hits[0], len))
							return;
						m_numhits = 0;
#else /* NO_CAPITALIZATION_SUPPORT */
						return;
#endif /* NO_CAPITALIZATION_SUPPORT */
					}
				}
				/*
				 * Handle cross-products.
				 */
				if (flent->flagflags & FF_CROSSPRODUCT)
						chk_suf (word, tword, tlen, sfxopts | FF_CROSSPRODUCT,
					flent, ignoreflagbits, allhits);
			}
	    }
	}
}

/*!
 * Check possible suffixes
 *
 * \param word Word to be checked
 * \param ucword Upper-case-only word
 * \param len The length of ucword
 * \param optflags Affix option flags
 * \param pfxent Prefix flag entry if cross-prod
 * \param ignoreflagbits Ignore whether affix is legal
 * \param allhits Keep going after first hit
 */
void
ISpellChecker::chk_suf (ichar_t *word, ichar_t *ucword, 
					int len, int optflags, struct flagent *pfxent, 
					int ignoreflagbits, int allhits)
{
    register ichar_t *	cp;		/* Pointer to char to index on */
    struct flagptr *	ind;		/* Flag index table to test */

    suf_list_chk (word, ucword, len, &m_sflagindex[0], optflags, pfxent,
      ignoreflagbits, allhits);
    cp = ucword + len - 1;
	/* HACK: bail on unrecognized chars */
	if (*cp >= (SET_SIZE + MAXSTRINGCHARS))
		return;
    ind = &m_sflagindex[*cp];
    while (ind->numents == 0  &&  ind->pu.fp != NULL)
	{
		if (cp == ucword)
			return;
		if (ind->pu.fp[0].numents)
		{
			suf_list_chk (word, ucword, len, &ind->pu.fp[0],
			  optflags, pfxent, ignoreflagbits, allhits);
			if (m_numhits != 0  &&  !allhits  &&  /* !cflag  && */  !ignoreflagbits)
				return;
		}
		/* HACK: bail on unrecognized chars */
		if (*(cp-1) >= (SET_SIZE + MAXSTRINGCHARS))
			return;
		ind = &ind->pu.fp[*--cp];
	}
    suf_list_chk (word, ucword, len, ind, optflags, pfxent,
      ignoreflagbits, allhits);
}
    
/*!
 * \param word Word to be checked
 * \param ucword Upper-case-only word
 * \param len The length of ucword
 * \param ind Flag index table
 * \param optflags Affix option flags
 * \param pfxent Prefix flag entry if crossonly
 * \param ignoreflagbits Ignore whether affix is legal
 * \pram allhits Keep going after first hit
 */
void ISpellChecker::suf_list_chk (ichar_t *word, ichar_t *ucword, 
						  int len, struct flagptr *ind, int optflags, 
						  struct flagent *pfxent, int ignoreflagbits, int allhits)
{
    register ichar_t *	cp;		/* Pointer into end of ucword */
    int			cond;		/* Condition number */
    struct dent *	dent;		/* Dictionary entry we found */
    int			entcount;	/* Number of entries to process */
    register struct flagent *
			flent;		/* Current table entry */
    int			preadd;		/* Length added to tword2 as prefix */
    register int	tlen;		/* Length of tword */
    ichar_t		tword[INPUTWORDLEN + 4 * MAXAFFIXLEN + 4]; /* Tmp cpy */
    ichar_t		tword2[sizeof tword]; /* 2nd copy for ins_root_cap */

    icharcpy (tword, ucword);
    for (flent = ind->pu.ent, entcount = ind->numents;
      entcount > 0;
      flent++, entcount--)
	{
		if ((optflags & FF_CROSSPRODUCT) != 0
		  &&  (flent->flagflags & FF_CROSSPRODUCT) == 0)
			continue;
		/*
		 * If this is a compound-only affix, ignore it unless we're
		 * looking for that specific thing.
		 */
		if ((flent->flagflags & FF_COMPOUNDONLY) != 0
		  &&  (optflags & FF_COMPOUNDONLY) == 0)
			continue;

		/*
		 * See if the suffix matches.
		 */
		tlen = len - flent->affl;
		if (tlen > 0
		  &&  (flent->affl == 0
			||  icharcmp (flent->affix, ucword + tlen) == 0)
		  &&  tlen + flent->stripl >= flent->numconds)
		{
			/*
			 * The suffix matches.  Remove it, replace it by the "strip"
			 * string (if any), and check the original conditions.
			 */
			icharcpy (tword, ucword);
			cp = tword + tlen;
			if (flent->stripl)
			{
				icharcpy (cp, flent->strip);
				tlen += flent->stripl;
				cp = tword + tlen;
			}
			else
				*cp = '\0';
			for (cond = flent->numconds;  --cond >= 0;  )
			{
				if ((flent->conds[*--cp] & (1 << cond)) == 0)
					break;
			}
			if (cond < 0)
			{
				/*
				 * The conditions match.  See if the word is in the
				 * dictionary.
				 */
				if (ignoreflagbits)
				{
					if ((dent = ispell_lookup (tword, 1)) != NULL)
					{
						cp = tword2;
						if ((optflags & FF_CROSSPRODUCT)
						  &&  pfxent->affl != 0)
						{
							icharcpy (cp, pfxent->affix);
							cp += pfxent->affl;
							*cp++ = '+';
						}
						preadd = cp - tword2;
						icharcpy (cp, tword);
						cp += tlen;
						if ((optflags & FF_CROSSPRODUCT)
						  &&  pfxent->stripl != 0)
						{
							*cp++ = '-';
							icharcpy (cp, pfxent->strip);
							cp += pfxent->stripl;
						}
						if (flent->stripl)
						{
							*cp++ = '-';
							icharcpy (cp, flent->strip);
							cp += flent->stripl;
						}
						if (flent->affl)
						{
							*cp++ = '+';
							icharcpy (cp, flent->affix);
							cp += flent->affl;
						}
					}
				}
				else if ((dent = ispell_lookup (tword, 1)) != NULL
				  &&  TSTMASKBIT (dent->mask, flent->flagbit)
				  &&  ((optflags & FF_CROSSPRODUCT) == 0
					|| TSTMASKBIT (dent->mask, pfxent->flagbit)))
				{
					if (m_numhits < MAX_HITS)
					{
						m_hits[m_numhits].dictent = dent;
						m_hits[m_numhits].prefix = pfxent;
						m_hits[m_numhits].suffix = flent;
						m_numhits++;
					}
					if (!allhits)
					{
#ifndef NO_CAPITALIZATION_SUPPORT
						if (cap_ok (word, &m_hits[0], len))
							return;
						m_numhits = 0;
#else /* NO_CAPITALIZATION_SUPPORT */
						return;
#endif /* NO_CAPITALIZATION_SUPPORT */
					}
				}
			}
		}
	}
}

/*!
 * Expand a dictionary prefix entry
 *
 * \param croot Char version of rootword
 * \param rootword Root word to expand
 * \param mask Mask bits to expand on
 * \param option Option, see expandmode
 * \param extra Extra info to add to line
 *
 * \return
 */
int ISpellChecker::expand_pre (char *croot, ichar_t *rootword, MASKTYPE mask[], 
				int option, char *extra)
{
    int				entcount;	/* No. of entries to process */
    int				explength;	/* Length of expansions */
    register struct flagent *
				flent;		/* Current table entry */

    for (flent = m_pflaglist, entcount = m_numpflags, explength = 0;
      entcount > 0;
      flent++, entcount--)
	{
		if (TSTMASKBIT (mask, flent->flagbit))
			explength +=
			  pr_pre_expansion (croot, rootword, flent, mask, option, extra);
	}
    return explength;
}

/*!
 * Print a prefix expansion
 *
 * \param croot Char version of rootword
 * \param rootword Root word to expand
 * \param flent Current table entry
 * \param mask Mask bits to expand on
 * \param option Option, see	expandmode
 * \param extra Extra info to add to line
 *
 * \return
 */
int ISpellChecker::pr_pre_expansion ( char *croot, ichar_t *rootword, 
							struct flagent *flent, MASKTYPE mask[], int option, 
							char *extra)
{
    int				cond;		/* Current condition number */
    register ichar_t *		nextc;		/* Next case choice */
    int				tlen;		/* Length of tword */
    ichar_t			tword[INPUTWORDLEN + MAXAFFIXLEN]; /* Temp */

    tlen = icharlen (rootword);
    if (flent->numconds > tlen)
		return 0;
    tlen -= flent->stripl;
    if (tlen <= 0)
		return 0;
    tlen += flent->affl;
    for (cond = 0, nextc = rootword;  cond < flent->numconds;  cond++)
	{
		if ((flent->conds[mytoupper (*nextc++)] & (1 << cond)) == 0)
			return 0;
	}
    /*
     * The conditions are satisfied.  Copy the word, add the prefix,
     * and make it the proper case.   This code is carefully written
     * to match that ins_cap and cap_ok.  Note that the affix, as
     * inserted, is uppercase.
     *
     * There is a tricky bit here:  if the root is capitalized, we
     * want a capitalized result.  If the root is followcase, however,
     * we want to duplicate the case of the first remaining letter
     * of the root.  In other words, "Loved/U" should generate "Unloved",
     * but "LOved/U" should generate "UNLOved" and "lOved/U" should
     * produce "unlOved".
     */
    if (flent->affl)
	{
		icharcpy (tword, flent->affix);
		nextc = tword + flent->affl;
	}
    icharcpy (nextc, rootword + flent->stripl);
    if (myupper (rootword[0]))
	{
		/* We must distinguish followcase from capitalized and all-upper */
		for (nextc = rootword + 1;  *nextc;  nextc++)
		{
			if (!myupper (*nextc))
				break;
		}
		if (*nextc)
		{
			/* It's a followcase or capitalized word.  Figure out which. */
			for (  ;  *nextc;  nextc++)
			{
				if (myupper (*nextc))
					break;
			}
			if (*nextc)
			{
				/* It's followcase. */
				if (!myupper (tword[flent->affl]))
					forcelc (tword, flent->affl);
			}
			else
			{
				/* It's capitalized */
				forcelc (tword + 1, tlen - 1);
			}
		}
	}
    else
	{
		/* Followcase or all-lower, we don't care which */
		if (!myupper (*nextc))
			forcelc (tword, flent->affl);
	}
    if (option == 3)
		printf ("\n%s", croot);
    if (option != 4)
		printf (" %s%s", ichartosstr (tword, 1), extra);
    if (flent->flagflags & FF_CROSSPRODUCT)
		return tlen
		  + expand_suf (croot, tword, mask, FF_CROSSPRODUCT, option, extra);
    else
		return tlen;
}

/*!
 * Expand a dictionary suffix entry
 *
 * \param croot Char version of rootword
 * \param rootword Root word to expand 
 * \param mask Mask bits to expand on
 * \param optflags Affix option flags
 * \param option Option, see expandmode
 * \param extra Extra info to add to line
 *
 * \return
 */
int ISpellChecker::expand_suf (char *croot, ichar_t *rootword, MASKTYPE mask[], 
				int optflags, int option, char *extra)
{
    int				entcount;	/* No. of entries to process */
    int				explength;	/* Length of expansions */
    register struct flagent *
				flent;		/* Current table entry */

    for (flent = m_sflaglist, entcount = m_numsflags, explength = 0;
      entcount > 0;
      flent++, entcount--)
	{
		if (TSTMASKBIT (mask, flent->flagbit))
		{
			if ((optflags & FF_CROSSPRODUCT) == 0
			  ||  (flent->flagflags & FF_CROSSPRODUCT))
			explength +=
			  pr_suf_expansion (croot, rootword, flent, option, extra);
		}
	}
    return explength;
}

/*!
 * Print a suffix expansion
 *
 * \param croot Char version of rootword
 * \param rootword Root word to expand
 * \param flent Current table entry
 * \param option Option, see expandmode
 * \param extra Extra info to add to line
 *
 * \return
 */
int ISpellChecker::pr_suf_expansion (char *croot, ichar_t *rootword, 
							struct flagent *flent, int option, char *extra)
{
    int				cond;		/* Current condition number */
    register ichar_t *		nextc;		/* Next case choice */
    int				tlen;		/* Length of tword */
    ichar_t			tword[INPUTWORDLEN + MAXAFFIXLEN]; /* Temp */

    tlen = icharlen (rootword);
    cond = flent->numconds;
    if (cond > tlen)
		return 0;
    if (tlen - flent->stripl <= 0)
		return 0;
    for (nextc = rootword + tlen;  --cond >= 0;  )
	{
		if ((flent->conds[mytoupper (*--nextc)] & (1 << cond)) == 0)
			return 0;
	}
    /*
     * The conditions are satisfied.  Copy the word, add the suffix,
     * and make it match the case of the last remaining character of the
     * root.  Again, this code carefully matches ins_cap and cap_ok.
     */
    icharcpy (tword, rootword);
    nextc = tword + tlen - flent->stripl;
    if (flent->affl)
	{
		icharcpy (nextc, flent->affix);
		if (!myupper (nextc[-1]))
			forcelc (nextc, flent->affl);
	}
    else
		*nextc = 0;
    if (option == 3)
		printf ("\n%s", croot);
    if (option != 4)
		printf (" %s%s", ichartosstr (tword, 1), extra);
    return tlen + flent->affl - flent->stripl;
}

/*!
 * \param dst Destination to modify
 * \param len Length to copy
 */
void ISpellChecker::forcelc (ichar_t *dst, int len)			/* Force to lowercase */
{

    for (  ;  --len >= 0;  dst++)
		*dst = mytolower (*dst);
}