summary refs log tree commit diff
path: root/Src/Modules/terminfo.c
blob: 52b0b27f87ab4d0d0a727135dd9ec5186aeb8fb5 (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
/*
 * terminfo.c - parameter interface to terminfo via curses
 *
 * This file is part of zsh, the Z shell.
 *
 * Copyright (c) 2000 Sven Wishnowsky, Clint Adams
 * 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 Sven Wishnowsky, Clint Adams 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 Sven Wishnowsky, Clint Adams and the Zsh
 * Development Group have been advised of the possibility of such damage.
 *
 * Sven Wishnowsky, Clint Adams 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 Sven
 * Wishnowsky, Clint Adams and the Zsh Development Group have no obligation
 * to provide maintenance, support, updates, enhancements, or modifications.
 *
 */

#include "terminfo.mdh"
#include "terminfo.pro"

static char terminfo_nam[] = "terminfo";
static Param terminfo_pm;

/* echoti: output a terminfo capability */

/**/
int
bin_echoti(char *name, char **argv, char *ops, int func)
{
    char *s, *t;
    int num;
    
    s = *argv++;
    /* This depends on the termcap stuff in init.c */
    if (termflags & TERM_BAD)
	return 1;
    if ((termflags & TERM_UNKNOWN) && (isset(INTERACTIVE) || !init_term()))
	return 1;
    /* if the specified capability has a numeric value, display it */
    if (((num = tigetnum(s)) != -1) && (num != -2)) {
	printf("%d\n", num);
	return 0;
    }
    
    switch (tigetflag(s)) {
    case -1:
	break;
    case 0:
	puts("no");
	return 0;
    default:
	puts("yes");
	return 0;
    }
    
/* get a string-type capability */
    t = (char *)tigetstr(s);
    if (!t || t == (char *)-1 || !*t) {
	/* capability doesn't exist, or (if boolean) is off */
	zwarnnam(name, "no such terminfo capability: %s", s, 0);
	return 1;
    }
    
    tputs(t, 1, putchar);
    return 0;
}

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

/* This says if we are cleaning up when the module is unloaded. */

static int incleanup;

/* Empty dummy function for special hash parameters. */

/**/
static void
shempty(void)
{
}

/* Create a simple special hash parameter. */

/**/
static Param
createtihash()
{
    Param pm;
    HashTable ht;
    
    unsetparam(terminfo_nam);
    
    if (!(pm = createparam(terminfo_nam, PM_SPECIAL|PM_HIDE|PM_HIDEVAL|
			   PM_REMOVABLE|PM_HASHED)))
	return NULL;
    
    pm->level = pm->old ? locallevel : 0;
    pm->gets.hfn = hashgetfn;
    pm->sets.hfn = hashsetfn;
    pm->unsetfn = stdunsetfn;
    pm->u.hash = ht = newhashtable(7, terminfo_nam, NULL);
    
    ht->hash        = hasher;
    ht->emptytable  = (TableFunc) shempty;
    ht->filltable   = NULL;
    ht->addnode     = (AddNodeFunc) shempty;
    ht->getnode     = ht->getnode2 = getterminfo;
    ht->removenode  = (RemoveNodeFunc) shempty;
    ht->disablenode = NULL;
    ht->enablenode  = NULL;
    ht->freenode    = (FreeNodeFunc) shempty;
    ht->printnode   = printparamnode;
    ht->scantab     = scanterminfo;

    return (terminfo_pm = pm);
}

/**/
static HashNode
getterminfo(HashTable ht, char *name)
{
    int len, num;
    char *tistr;
    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;
    
    unmetafy(name, &len);
    
    pm = (Param) zhalloc(sizeof(struct param));
    pm->nam = dupstring(name);
    pm->flags = PM_READONLY;
    pm->sets.cfn = NULL;
    pm->gets.cfn = strgetfn;
    pm->unsetfn = NULL;
    pm->ct = 0;
    pm->env = NULL;
    pm->ename = NULL;
    pm->old = NULL;
    pm->level = 0;
    
    if (((num = tigetnum(name)) != -1) && (num != -2)) {
	pm->u.val = num;
	pm->flags |= PM_INTEGER;
    }
    else if ((num = tigetflag(name)) != -1) {
	pm->u.str = num ? dupstring("yes") : dupstring("no");
	pm->flags |= PM_SCALAR;
    }
    else if ((tistr = (char *)tigetstr(name)) != NULL)
    {
	pm->u.str = dupstring(tistr);
	pm->flags |= PM_SCALAR;
    }
    else
    {
	zwarn("no such capability: %s", name, 0);
	pm->u.str = dupstring("");
	pm->flags |= PM_UNSET;
    }
    return (HashNode) pm;
    
}

/**/
static void
scanterminfo(HashTable ht, ScanFunc func, int flags)
{
}

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

/**/
int
boot_(Module m)
{
    setupterm((char *)0, 1, (int *)0);

    return !createtihash() || !addbuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
}

/**/
int
cleanup_(Module m)
{
    Param pm;
    
    incleanup = 1;
    
    if ((pm = (Param) paramtab->getnode(paramtab, terminfo_nam)) &&
	pm == terminfo_pm) {
	pm->flags &= ~PM_READONLY;
	unsetparam_pm(pm, 0, 1);
    }
    deletebuiltins(m->nam, bintab, sizeof(bintab)/sizeof(*bintab));
    return 0;
}

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