about summary refs log tree commit diff
path: root/Src/Modules/termcap.c
blob: af4009a3acffe7434509eca6da1dc88e096e06c8 (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
/*
 * termcap.c - termcap manipulation through curses
 *
 * This file is part of zsh, the Z shell.
 *
 * Copyright (c) 1992-1997 Paul Falstad
 * All rights reserved.
 *
 * Permission is hereby granted, without written agreement and without
 * license or royalty fees, to use, copy, modify, and distribute this
 * software and to distribute modified versions of this software for any
 * purpose, provided that the above copyright notice and the following
 * two paragraphs appear in all copies of this software.
 *
 * In no event shall Paul Falstad or the Zsh Development Group be liable
 * to any party for direct, indirect, special, incidental, or consequential
 * damages arising out of the use of this software and its documentation,
 * even if Paul Falstad and the Zsh Development Group have been advised of
 * the possibility of such damage.
 *
 * Paul Falstad and the Zsh Development Group specifically disclaim any
 * warranties, including, but not limited to, the implied warranties of
 * merchantability and fitness for a particular purpose.  The software
 * provided hereunder is on an "as is" basis, and Paul Falstad and the
 * Zsh Development Group have no obligation to provide maintenance,
 * support, updates, enhancements, or modifications.
 *
 */

/*
 * We need to include the zsh headers later to avoid clashes with
 * the definitions on some systems, however we need the configuration
 * file to decide whether we should avoid curses.h, which clashes
 * with several zsh constants on some systems (e.g. SunOS 4).
 */
#include "../../config.h"

#include "termcap.mdh"
#include "termcap.pro"

/**/
#ifdef HAVE_TGETENT

#ifndef HAVE_BOOLCODES
static char *boolcodes[] = {
    "bw", "am", "ut", "cc", "xs", "YA", "YF", "YB", "xt", "xn", "eo",
    "gn", "hc", "HC", "km", "YC", "hs", "hl", "in", "YG", "da", "db",
    "mi", "ms", "nx", "xb", "NP", "ND", "NR", "os", "5i", "YD", "YE",
    "es", "hz", "ul", "xo", NULL};
#endif

/**/
static int
ztgetflag(char *s)
{
    char **b;

    /* ncurses can tell if an existing boolean capability is *
     * off, but other curses variants can't, so we fudge it. *
     * This feature of ncurses appears to have gone away as  *
     * of NCURSES_MAJOR_VERSION == 5, so don't rely on it.   */
    switch (tgetflag(s)) {
    case -1:
	break;
    case 0:
	for (b = (char **)boolcodes; *b; ++b)
	    if (s[0] == (*b)[0] && s[1] == (*b)[1])
		return 0;
	break;
    default:
	return 1;
    }
    return -1;
}

/* echotc: output a termcap */

/**/
static int
bin_echotc(char *name, char **argv, UNUSED(Options ops), UNUSED(int func))
{
    char *s, buf[2048], *t, *u;
    int num, argct;

    s = *argv++;
    if (termflags & TERM_BAD)
	return 1;
    if ((termflags & TERM_UNKNOWN) && (isset(INTERACTIVE) || !init_term()))
	return 1;
    /* if the specified termcap has a numeric value, display it */
    if ((num = tgetnum(s)) != -1) {
	printf("%d\n", num);
	return 0;
    }
    /* if the specified termcap is boolean, and set, say so  */
    switch (ztgetflag(s)) {
    case -1:
	break;
    case 0:
	puts("no");
	return 0;
    default:
	puts("yes");
	return 0;
    }
    /* get a string-type capability */
    u = buf;
    t = tgetstr(s, &u);
    if (t == (char *)-1 || !t || !*t) {
	/* capability doesn't exist, or (if boolean) is off */
	zwarnnam(name, "no such capability: %s", s);
	return 1;
    }
    /* count the number of arguments required */
    for (argct = 0, u = t; *u; u++)
	if (*u == '%') {
	    if (u++, (*u == 'd' || *u == '2' || *u == '3' || *u == '.' ||
		      *u == '+'))
		argct++;
	}
    /* check that the number of arguments provided is correct */
    if (arrlen(argv) != argct) {
	zwarnnam(name, (arrlen(argv) < argct) ? "not enough arguments" :
		 "too many arguments");
	return 1;
    }
    /* output string, through the proper termcap functions */
    if (!argct)
	tputs(t, 1, putraw);
    else {
	/* This assumes arguments of <lines> <columns> for cap 'cm' */
	num = (argv[1]) ? atoi(argv[1]) : atoi(*argv);
	tputs(tgoto(t, num, atoi(*argv)), 1, putraw);
    }
    return 0;
}

static struct builtin bintab[] = {
    BUILTIN("echotc", 0, bin_echotc, 1, -1, 0, NULL, NULL),
};

/**/
static HashNode
gettermcap(UNUSED(HashTable ht), const char *name)
{
    int len, num;
    char *tcstr, buf[2048], *u, *nameu;
    Param pm = NULL;

    /* This depends on the termcap stuff in init.c */
    if (termflags & TERM_BAD)
	return NULL;
    if ((termflags & TERM_UNKNOWN) && (isset(INTERACTIVE) || !init_term()))
	return NULL;

    
    nameu = dupstring(name);
    unmetafy(nameu, &len);

    pm = (Param) hcalloc(sizeof(struct param));
    pm->node.nam = nameu;
    pm->node.flags = PM_READONLY;
    u = buf;

    /* logic in the following cascade copied from echotc, above */

    if ((num = tgetnum(nameu)) != -1) {
	pm->gsu.i = &nullsetinteger_gsu;
	pm->u.val = num;
	pm->node.flags |= PM_INTEGER;
	return &pm->node;
    }

    pm->gsu.s = &nullsetscalar_gsu;
    switch (ztgetflag(nameu)) {
    case -1:
	break;
    case 0:
	pm->u.str = dupstring("no");
	pm->node.flags |= PM_SCALAR;
	return &pm->node;
    default:
	pm->u.str = dupstring("yes");
	pm->node.flags |= PM_SCALAR;
	return &pm->node;
    }
    if ((tcstr = tgetstr(nameu, &u)) != NULL && tcstr != (char *)-1) {
	pm->u.str = dupstring(tcstr);
	pm->node.flags |= PM_SCALAR;
    } else {
	/* zwarn("no such capability: %s", name); */
	pm->u.str = dupstring("");
	pm->node.flags |= PM_UNSET;
    }
    return &pm->node;
}

/**/
static void
scantermcap(UNUSED(HashTable ht), ScanFunc func, int flags)
{
    Param pm = NULL;
    int num;
    char **capcode, *tcstr, buf[2048], *u;

#ifndef HAVE_NUMCODES
    static char *numcodes[] = {
	"co", "it", "lh", "lw", "li", "lm", "sg", "ma", "Co", "pa", "MW",
	"NC", "Nl", "pb", "vt", "ws", "Yo", "Yp", "Ya", "BT", "Yc", "Yb",
	"Yd", "Ye", "Yf", "Yg", "Yh", "Yi", "Yk", "Yj", "Yl", "Ym", "Yn",
	NULL};
#endif

#ifndef HAVE_STRCODES
    static char *zstrcodes[] = {
	"ac", "bt", "bl", "cr", "ZA", "ZB", "ZC", "ZD", "cs", "rP", "ct",
	"MC", "cl", "cb", "ce", "cd", "ch", "CC", "CW", "cm", "do", "ho",
	"vi", "le", "CM", "ve", "nd", "ll", "up", "vs", "ZE", "dc", "dl",
	"DI", "ds", "DK", "hd", "eA", "as", "SA", "mb", "md", "ti", "dm",
	"mh", "ZF", "ZG", "im", "ZH", "ZI", "ZJ", "ZK", "ZL", "mp", "mr",
	"mk", "ZM", "so", "ZN", "ZO", "us", "ZP", "SX", "ec", "ae", "RA",
	"me", "te", "ed", "ZQ", "ei", "ZR", "ZS", "ZT", "ZU", "se", "ZV",
	"ZW", "ue", "ZX", "RX", "PA", "fh", "vb", "ff", "fs", "WG", "HU",
	"i1", "is", "i3", "if", "iP", "Ic", "Ip", "ic", "al", "ip", "K1",
	"K3", "K2", "kb", "@1", "kB", "K4", "K5", "@2", "ka", "kC", "@3",
	"@4", "@5", "@6", "kt", "kD", "kL", "kd", "kM", "@7", "@8", "kE",
	"kS", "@9", "k0", "k1", "k;", "F1", "F2", "F3", "F4", "F5", "F6",
	"F7", "F8", "F9", "k2", "FA", "FB", "FC", "FD", "FE", "FF", "FG",
	"FH", "FI", "FJ", "k3", "FK", "FL", "FM", "FN", "FO", "FP", "FQ",
	"FR", "FS", "FT", "k4", "FU", "FV", "FW", "FX", "FY", "FZ", "Fa",
	"Fb", "Fc", "Fd", "k5", "Fe", "Ff", "Fg", "Fh", "Fi", "Fj", "Fk",
	"Fl", "Fm", "Fn", "k6", "Fo", "Fp", "Fq", "Fr", "k7", "k8", "k9",
	"@0", "%1", "kh", "kI", "kA", "kl", "kH", "%2", "%3", "%4", "%5",
	"kN", "%6", "%7", "kP", "%8", "%9", "%0", "&1", "&2", "&3", "&4",
	"&5", "kr", "&6", "&9", "&0", "*1", "*2", "*3", "*4", "*5", "*6",
	"*7", "*8", "*9", "kF", "*0", "#1", "#2", "#3", "#4", "%a", "%b",
	"%c", "%d", "%e", "%f", "kR", "%g", "%h", "%i", "%j", "!1", "!2",
	"kT", "!3", "&7", "&8", "ku", "ke", "ks", "l0", "l1", "la", "l2",
	"l3", "l4", "l5", "l6", "l7", "l8", "l9", "Lf", "LF", "LO", "mo",
	"mm", "ZY", "ZZ", "Za", "Zb", "Zc", "Zd", "nw", "Ze", "oc", "op",
	"pc", "DC", "DL", "DO", "Zf", "IC", "SF", "AL", "LE", "Zg", "RI",
	"Zh", "SR", "UP", "Zi", "pk", "pl", "px", "pn", "ps", "pO", "pf",
	"po", "PU", "QD", "RC", "rp", "RF", "r1", "r2", "r3", "rf", "rc",
	"cv", "sc", "sf", "sr", "Zj", "sa", "Sb", "Zk", "Zl", "SC", "sp",
	"Sf", "ML", "Zm", "MR", "Zn", "st", "Zo", "Zp", "wi", "Zq", "Zr",
	"Zs", "Zt", "Zu", "Zv", "ta", "Zw", "ts", "TO", "uc", "hu", "u0",
	"u1", "u2", "u3", "u4", "u5", "u6", "u7", "u8", "u9", "WA", "XF",
	"XN", "Zx", "S8", "Yv", "Zz", "Xy", "Zy", "ci", "Yw", "Yx", "dv",
	"S1", "Yy", "S2", "S4", "S3", "S5", "Gm", "Km", "Mi", "S6", "xl",
	"RQ", "S7", "s0", "s1", "s2", "s3", "AB", "AF", "Yz", "ML", "YZ",
	"MT", "Xh", "Xl", "Xo", "Xr", "Xt", "Xv", "sA", "sL", NULL};
#endif

    pm = (Param) hcalloc(sizeof(struct param));
    u = buf;

    pm->node.flags = PM_READONLY | PM_SCALAR;
    pm->gsu.s = &nullsetscalar_gsu;

    for (capcode = (char **)boolcodes; *capcode; capcode++) {
	if ((num = ztgetflag(*capcode)) != -1) {
	    pm->u.str = num ? dupstring("yes") : dupstring("no");
	    pm->node.nam = dupstring(*capcode);
	    func(&pm->node, flags);
	}
    }

    pm->node.flags = PM_READONLY | PM_INTEGER;
    pm->gsu.i = &nullsetinteger_gsu;

    for (capcode = (char **)numcodes; *capcode; capcode++) {
	if ((num = tgetnum(*capcode)) != -1) {
	    pm->u.val = num;
	    pm->node.nam = dupstring(*capcode);
	    func(&pm->node, flags);
	}
    }

    pm->node.flags = PM_READONLY | PM_SCALAR;
    pm->gsu.s = &nullsetscalar_gsu;

    for (capcode = (char **)
#ifdef HAVE_STRCODES
	     strcodes
#else
	     zstrcodes
#endif
	     ; *capcode; capcode++) {
	if ((tcstr = (char *)tgetstr(*capcode,&u)) != NULL &&
	    tcstr != (char *)-1) {
	    pm->u.str = dupstring(tcstr);
	    pm->node.nam = dupstring(*capcode);
	    func(&pm->node, flags);
	}
    }
}

static struct paramdef partab[] = {
    SPECIALPMDEF("termcap", PM_READONLY, NULL, gettermcap, scantermcap)
};

/**/
#endif /* HAVE_TGETENT */

static struct features module_features = {
#ifdef HAVE_TGETENT
    bintab, sizeof(bintab)/sizeof(*bintab),
#else
    NULL, 0,
#endif
    NULL, 0,
    NULL, 0,
#ifdef HAVE_TGETENT
    partab, sizeof(partab)/sizeof(*partab),
#else
    NULL, 0,
#endif
    0
};

/**/
int
setup_(UNUSED(Module m))
{
    return 0;
}

/**/
int
features_(Module m, char ***features)
{
    *features = featuresarray(m, &module_features);
    return 0;
}

/**/
int
enables_(Module m, int **enables)
{
    return handlefeatures(m, &module_features, enables);
}

/**/
int
boot_(UNUSED(Module m))
{
#ifdef HAVE_TGETENT
    zsetupterm();
#endif
    return  0;
}

/**/
int
cleanup_(Module m)
{
#ifdef HAVE_TGETENT
    zdeleteterm();
#endif
    return setfeatureenables(m, &module_features, NULL);
}

/**/
int
finish_(UNUSED(Module m))
{
    return 0;
}