aboutsummaryrefslogtreecommitdiff
path: root/contrib/ncurses/ncurses/tinfo/alloc_ttype.c
blob: 9f31ed3ffab75b6712727847b9058534df257c84 (plain) (blame)
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
/****************************************************************************
 * Copyright (c) 1999-2003,2006 Free Software Foundation, Inc.              *
 *                                                                          *
 * Permission is hereby granted, free of charge, to any person obtaining a  *
 * copy of this software and associated documentation files (the            *
 * "Software"), to deal in the Software without restriction, including      *
 * without limitation the rights to use, copy, modify, merge, publish,      *
 * distribute, distribute with modifications, sublicense, and/or sell       *
 * copies of the Software, and to permit persons to whom the Software is    *
 * furnished to do so, subject to the following conditions:                 *
 *                                                                          *
 * The above copyright notice and this permission notice shall be included  *
 * in all copies or substantial portions of the Software.                   *
 *                                                                          *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
 * THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
 *                                                                          *
 * Except as contained in this notice, the name(s) of the above copyright   *
 * holders shall not be used in advertising or otherwise to promote the     *
 * sale, use or other dealings in this Software without prior written       *
 * authorization.                                                           *
 ****************************************************************************/

/****************************************************************************
 *  Author: Thomas E. Dickey <dickey@clark.net> 1999-on                     *
 ****************************************************************************/

/*
 * align_ttype.c --  functions for TERMTYPE
 *
 *	_nc_align_termtype()
 *	_nc_copy_termtype()
 *
 */

#include <curses.priv.h>

#include <tic.h>
#include <term_entry.h>

MODULE_ID("$Id: alloc_ttype.c,v 1.16 2006/07/08 19:18:38 tom Exp $")

#if NCURSES_XNAMES
/*
 * Merge the a/b lists into dst.  Both a/b are sorted (see _nc_extend_names()),
 * so we do not have to worry about order dependencies.
 */
static int
merge_names(char **dst, char **a, int na, char **b, int nb)
{
    int n = 0;
    while (na > 0 && nb > 0) {
	int cmp = strcmp(*a, *b);
	if (cmp < 0) {
	    dst[n++] = *a++;
	    na--;
	} else if (cmp > 0) {
	    dst[n++] = *b++;
	    nb--;
	} else if (cmp == 0) {
	    dst[n++] = *a;
	    a++, b++;
	    na--, nb--;
	}
    }
    while (na-- > 0) {
	dst[n++] = *a++;
    }
    while (nb-- > 0) {
	dst[n++] = *b++;
    }
    DEBUG(4, ("merge_names -> %d", n));
    return n;
}

static bool
find_name(char **table, int length, char *name)
{
    while (length-- > 0) {
	if (!strcmp(*table++, name)) {
	    DEBUG(4, ("found name '%s'", name));
	    return TRUE;
	}
    }
    DEBUG(4, ("did not find name '%s'", name));
    return FALSE;
}

static void
realign_data(TERMTYPE *to, char **ext_Names,
	     int ext_Booleans,
	     int ext_Numbers,
	     int ext_Strings)
{
    int n, m, base;
    int limit = (to->ext_Booleans + to->ext_Numbers + to->ext_Strings);

    if (to->ext_Booleans != ext_Booleans) {
	to->num_Booleans += (ext_Booleans - to->ext_Booleans);
	to->Booleans = typeRealloc(NCURSES_SBOOL, to->num_Booleans, to->Booleans);
	for (n = to->ext_Booleans - 1,
	     m = ext_Booleans - 1,
	     base = to->num_Booleans - (m + 1); m >= 0; m--) {
	    if (find_name(to->ext_Names, limit, ext_Names[m])) {
		to->Booleans[base + m] = to->Booleans[base + n--];
	    } else {
		to->Booleans[base + m] = FALSE;
	    }
	}
	to->ext_Booleans = ext_Booleans;
    }
    if (to->ext_Numbers != ext_Numbers) {
	to->num_Numbers += (ext_Numbers - to->ext_Numbers);
	to->Numbers = typeRealloc(short, to->num_Numbers, to->Numbers);
	for (n = to->ext_Numbers - 1,
	     m = ext_Numbers - 1,
	     base = to->num_Numbers - (m + 1); m >= 0; m--) {
	    if (find_name(to->ext_Names, limit, ext_Names[m + ext_Booleans])) {
		to->Numbers[base + m] = to->Numbers[base + n--];
	    } else {
		to->Numbers[base + m] = ABSENT_NUMERIC;
	    }
	}
	to->ext_Numbers = ext_Numbers;
    }
    if (to->ext_Strings != ext_Strings) {
	to->num_Strings += (ext_Strings - to->ext_Strings);
	to->Strings = typeRealloc(char *, to->num_Strings, to->Strings);
	for (n = to->ext_Strings - 1,
	     m = ext_Strings - 1,
	     base = to->num_Strings - (m + 1); m >= 0; m--) {
	    if (find_name(to->ext_Names, limit, ext_Names[m + ext_Booleans + ext_Numbers])) {
		to->Strings[base + m] = to->Strings[base + n--];
	    } else {
		to->Strings[base + m] = ABSENT_STRING;
	    }
	}
	to->ext_Strings = ext_Strings;
    }
}

/*
 * Returns the first index in ext_Names[] for the given token-type
 */
static int
_nc_first_ext_name(TERMTYPE *tp, int token_type)
{
    int first;

    switch (token_type) {
    case BOOLEAN:
	first = 0;
	break;
    case NUMBER:
	first = tp->ext_Booleans;
	break;
    case STRING:
	first = tp->ext_Booleans + tp->ext_Numbers;
	break;
    default:
	first = 0;
	break;
    }
    return first;
}

/*
 * Returns the last index in ext_Names[] for the given token-type
 */
static int
_nc_last_ext_name(TERMTYPE *tp, int token_type)
{
    int last;

    switch (token_type) {
    case BOOLEAN:
	last = tp->ext_Booleans;
	break;
    case NUMBER:
	last = tp->ext_Booleans + tp->ext_Numbers;
	break;
    default:
    case STRING:
	last = NUM_EXT_NAMES(tp);
	break;
    }
    return last;
}

/*
 * Lookup an entry from extended-names, returning -1 if not found
 */
static int
_nc_find_ext_name(TERMTYPE *tp, char *name, int token_type)
{
    unsigned j;
    unsigned first = _nc_first_ext_name(tp, token_type);
    unsigned last = _nc_last_ext_name(tp, token_type);

    for (j = first; j < last; j++) {
	if (!strcmp(name, tp->ext_Names[j])) {
	    return j;
	}
    }
    return -1;
}

/*
 * Translate an index into ext_Names[] into the corresponding index into data
 * (e.g., Booleans[]).
 */
static int
_nc_ext_data_index(TERMTYPE *tp, int n, int token_type)
{
    switch (token_type) {
    case BOOLEAN:
	n += (tp->num_Booleans - tp->ext_Booleans);
	break;
    case NUMBER:
	n += (tp->num_Numbers - tp->ext_Numbers)
	    - (tp->ext_Booleans);
	break;
    default:
    case STRING:
	n += (tp->num_Strings - tp->ext_Strings)
	    - (tp->ext_Booleans + tp->ext_Numbers);
    }
    return n;
}

/*
 * Adjust tables to remove (not free) an extended name and its corresponding
 * data.
 */
static bool
_nc_del_ext_name(TERMTYPE *tp, char *name, int token_type)
{
    int j;
    int first, last;

    if ((first = _nc_find_ext_name(tp, name, token_type)) >= 0) {
	last = NUM_EXT_NAMES(tp) - 1;
	for (j = first; j < last; j++) {
	    tp->ext_Names[j] = tp->ext_Names[j + 1];
	}
	first = _nc_ext_data_index(tp, first, token_type);
	switch (token_type) {
	case BOOLEAN:
	    last = tp->num_Booleans - 1;
	    for (j = first; j < last; j++)
		tp->Booleans[j] = tp->Booleans[j + 1];
	    tp->ext_Booleans -= 1;
	    tp->num_Booleans -= 1;
	    break;
	case NUMBER:
	    last = tp->num_Numbers - 1;
	    for (j = first; j < last; j++)
		tp->Numbers[j] = tp->Numbers[j + 1];
	    tp->ext_Numbers -= 1;
	    tp->num_Numbers -= 1;
	    break;
	case STRING:
	    last = tp->num_Strings - 1;
	    for (j = first; j < last; j++)
		tp->Strings[j] = tp->Strings[j + 1];
	    tp->ext_Strings -= 1;
	    tp->num_Strings -= 1;
	    break;
	}
	return TRUE;
    }
    return FALSE;
}

/*
 * Adjust tables to insert an extended name, making room for new data.  The
 * index into the corresponding data array is returned.
 */
static int
_nc_ins_ext_name(TERMTYPE *tp, char *name, int token_type)
{
    unsigned first = _nc_first_ext_name(tp, token_type);
    unsigned last = _nc_last_ext_name(tp, token_type);
    unsigned total = NUM_EXT_NAMES(tp) + 1;
    unsigned j, k;

    for (j = first; j < last; j++) {
	int cmp = strcmp(name, tp->ext_Names[j]);
	if (cmp == 0)
	    /* already present */
	    return _nc_ext_data_index(tp, (int) j, token_type);
	if (cmp < 0) {
	    break;
	}
    }

    tp->ext_Names = typeRealloc(char *, total, tp->ext_Names);
    for (k = total - 1; k > j; k--)
	tp->ext_Names[k] = tp->ext_Names[k - 1];
    tp->ext_Names[j] = name;
    j = _nc_ext_data_index(tp, (int) j, token_type);

    switch (token_type) {
    case BOOLEAN:
	tp->ext_Booleans += 1;
	tp->num_Booleans += 1;
	tp->Booleans = typeRealloc(NCURSES_SBOOL, tp->num_Booleans, tp->Booleans);
	for (k = tp->num_Booleans - 1; k > j; k--)
	    tp->Booleans[k] = tp->Booleans[k - 1];
	break;
    case NUMBER:
	tp->ext_Numbers += 1;
	tp->num_Numbers += 1;
	tp->Numbers = typeRealloc(short, tp->num_Numbers, tp->Numbers);
	for (k = tp->num_Numbers - 1; k > j; k--)
	    tp->Numbers[k] = tp->Numbers[k - 1];
	break;
    case STRING:
	tp->ext_Strings += 1;
	tp->num_Strings += 1;
	tp->Strings = typeRealloc(char *, tp->num_Strings, tp->Strings);
	for (k = tp->num_Strings - 1; k > j; k--)
	    tp->Strings[k] = tp->Strings[k - 1];
	break;
    }
    return j;
}

/*
 * Look for strings that are marked cancelled, which happen to be the same name
 * as a boolean or number.  We'll get this as a special case when we get a
 * cancellation of a name that is inherited from another entry.
 */
static void
adjust_cancels(TERMTYPE *to, TERMTYPE *from)
{
    int first = to->ext_Booleans + to->ext_Numbers;
    int last = first + to->ext_Strings;
    int j, k;

    for (j = first; j < last;) {
	char *name = to->ext_Names[j];
	unsigned j_str = to->num_Strings - first - to->ext_Strings;

	if (to->Strings[j + j_str] == CANCELLED_STRING) {
	    if ((k = _nc_find_ext_name(from, to->ext_Names[j], BOOLEAN)) >= 0) {
		if (_nc_del_ext_name(to, name, STRING)
		    || _nc_del_ext_name(to, name, NUMBER)) {
		    k = _nc_ins_ext_name(to, name, BOOLEAN);
		    to->Booleans[k] = FALSE;
		} else {
		    j++;
		}
	    } else if ((k = _nc_find_ext_name(from, to->ext_Names[j],
					      NUMBER)) >= 0) {
		if (_nc_del_ext_name(to, name, STRING)
		    || _nc_del_ext_name(to, name, BOOLEAN)) {
		    k = _nc_ins_ext_name(to, name, NUMBER);
		    to->Numbers[k] = CANCELLED_NUMERIC;
		} else {
		    j++;
		}
	    }
	} else {
	    j++;
	}
    }
}

NCURSES_EXPORT(void)
_nc_align_termtype(TERMTYPE *to, TERMTYPE *from)
{
    int na = NUM_EXT_NAMES(to);
    int nb = NUM_EXT_NAMES(from);
    int n;
    bool same;
    char **ext_Names;
    int ext_Booleans, ext_Numbers, ext_Strings;
    bool used_ext_Names = FALSE;

    DEBUG(2, ("align_termtype to(%d:%s), from(%d:%s)", na, to->term_names,
	      nb, from->term_names));

    if (na != 0 || nb != 0) {
	if ((na == nb)		/* check if the arrays are equivalent */
	    &&(to->ext_Booleans == from->ext_Booleans)
	    && (to->ext_Numbers == from->ext_Numbers)
	    && (to->ext_Strings == from->ext_Strings)) {
	    for (n = 0, same = TRUE; n < na; n++) {
		if (strcmp(to->ext_Names[n], from->ext_Names[n])) {
		    same = FALSE;
		    break;
		}
	    }
	    if (same)
		return;
	}
	/*
	 * This is where we pay for having a simple extension representation. 
	 * Allocate a new ext_Names array and merge the two ext_Names arrays
	 * into it, updating to's counts for booleans, etc.  Fortunately we do
	 * this only for the terminfo compiler (tic) and comparer (infocmp).
	 */
	ext_Names = typeMalloc(char *, na + nb);

	if (to->ext_Strings && (from->ext_Booleans + from->ext_Numbers))
	    adjust_cancels(to, from);

	if (from->ext_Strings && (to->ext_Booleans + to->ext_Numbers))
	    adjust_cancels(from, to);

	ext_Booleans = merge_names(ext_Names,
				   to->ext_Names,
				   to->ext_Booleans,
				   from->ext_Names,
				   from->ext_Booleans);
	ext_Numbers = merge_names(ext_Names + ext_Booleans,
				  to->ext_Names
				  + to->ext_Booleans,
				  to->ext_Numbers,
				  from->ext_Names
				  + from->ext_Booleans,
				  from->ext_Numbers);
	ext_Strings = merge_names(ext_Names + ext_Numbers + ext_Booleans,
				  to->ext_Names
				  + to->ext_Booleans
				  + to->ext_Numbers,
				  to->ext_Strings,
				  from->ext_Names
				  + from->ext_Booleans
				  + from->ext_Numbers,
				  from->ext_Strings);
	/*
	 * Now we must reallocate the Booleans, etc., to allow the data to be
	 * overlaid.
	 */
	if (na != (ext_Booleans + ext_Numbers + ext_Strings)) {
	    realign_data(to, ext_Names, ext_Booleans, ext_Numbers, ext_Strings);
	    FreeIfNeeded(to->ext_Names);
	    to->ext_Names = ext_Names;
	    DEBUG(2, ("realigned %d extended names for '%s' (to)",
		      NUM_EXT_NAMES(to), to->term_names));
	    used_ext_Names = TRUE;
	}
	if (nb != (ext_Booleans + ext_Numbers + ext_Strings)) {
	    nb = (ext_Booleans + ext_Numbers + ext_Strings);
	    realign_data(from, ext_Names, ext_Booleans, ext_Numbers, ext_Strings);
	    from->ext_Names = typeRealloc(char *, nb, from->ext_Names);
	    memcpy(from->ext_Names, ext_Names, sizeof(char *) * nb);
	    DEBUG(2, ("realigned %d extended names for '%s' (from)",
		      NUM_EXT_NAMES(from), from->term_names));
	}
	if (!used_ext_Names)
	    free(ext_Names);
    }
}
#endif

NCURSES_EXPORT(void)
_nc_copy_termtype(TERMTYPE *dst, TERMTYPE *src)
{
    unsigned i;

    *dst = *src;		/* ...to copy the sizes and string-tables */
    dst->Booleans = typeMalloc(NCURSES_SBOOL, NUM_BOOLEANS(dst));
    dst->Numbers = typeMalloc(short, NUM_NUMBERS(dst));
    dst->Strings = typeMalloc(char *, NUM_STRINGS(dst));

    /* FIXME: use memcpy for these and similar loops */
    for_each_boolean(i, dst)
	dst->Booleans[i] = src->Booleans[i];
    for_each_number(i, dst)
	dst->Numbers[i] = src->Numbers[i];
    for_each_string(i, dst)
	dst->Strings[i] = src->Strings[i];

    /* FIXME: we probably should also copy str_table and ext_str_table,
     * but tic and infocmp are not written to exploit that (yet).
     */

#if NCURSES_XNAMES
    if ((i = NUM_EXT_NAMES(src)) != 0) {
	dst->ext_Names = typeMalloc(char *, i);
	memcpy(dst->ext_Names, src->ext_Names, i * sizeof(char *));
    } else {
	dst->ext_Names = 0;
    }
#endif

}