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
|
/* $NetBSD: termcap.c,v 1.7 1995/06/05 19:45:52 pk Exp $ */
/*
* Copyright (c) 1980, 1993
* The Regents of the University of California. 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 advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 THE REGENTS 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.
*/
#ifndef lint
#if 0
static char sccsid[] = "@(#)termcap.c 8.1 (Berkeley) 6/4/93";
#else
static char rcsid[] = "$NetBSD: termcap.c,v 1.7 1995/06/05 19:45:52 pk Exp $";
#endif
#endif /* not lint */
#define PBUFSIZ 512 /* max length of filename path */
#define PVECSIZ 32 /* max number of names in path */
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <curses.h>
#include "pathnames.h"
/*
* termcap - routines for dealing with the terminal capability data base
*
* BUG: Should use a "last" pointer in tbuf, so that searching
* for capabilities alphabetically would not be a n**2/2
* process when large numbers of capabilities are given.
* Note: If we add a last pointer now we will screw up the
* tc capability. We really should compile termcap.
*
* Essentially all the work here is scanning and decoding escapes
* in string capabilities. We don't use stdio because the editor
* doesn't, and because living w/o it is not hard.
*/
static char *tbuf; /* termcap buffer */
/*
* Get an entry for terminal name in buffer bp from the termcap file.
*/
int
tgetent(bp, name)
char *bp, *name;
{
register char *p;
register char *cp;
char *dummy;
char **fname;
char *home;
int i;
char pathbuf[PBUFSIZ+1]; /* holds raw path of filenames */
char *pathvec[PVECSIZ]; /* to point to names in pathbuf */
char **pvec; /* holds usable tail of path vector */
char *termpath;
fname = pathvec;
pvec = pathvec;
tbuf = bp;
p = pathbuf;
cp = getenv("TERMCAP");
/*
* TERMCAP can have one of two things in it. It can be the name
* of a file to use instead of /usr/share/misc/termcap. In this
* case it better start with a "/". Or it can be an entry to
* use so we don't have to read the file. In this case it
* has to already have the newlines crunched out. If TERMCAP
* does not hold a file name then a path of names is searched
* instead. The path is found in the TERMPATH variable, or becomes
* "$HOME/.termcap /usr/share/misc/termcap" if no TERMPATH exists.
*/
if (!cp || *cp != '/') { /* no TERMCAP or it holds an entry */
if ((termpath = getenv("TERMPATH")) != NULL)
strncpy(pathbuf, termpath, sizeof(pathbuf) - 1);
else {
if ((home = getenv("HOME")) != NULL) {
/* set up default */
/* $HOME first */
strncpy(pathbuf, home, sizeof(pathbuf) - 1 -
strlen(_PATH_DEF) - 1);
pathbuf[sizeof(pathbuf) - 1 -
strlen(_PATH_DEF) - 1] = '\0';
p += strlen(pathbuf); /* path, looking in */
*p++ = '/';
} /* if no $HOME look in current directory */
strncpy(p, _PATH_DEF, sizeof(pathbuf) -1 -
(p - pathbuf));
}
}
else /* user-defined name in TERMCAP */
strncpy(pathbuf, cp, sizeof(pathbuf) - 1); /* still can be tokenized */
pathbuf[sizeof(pathbuf) - 1] = '\0';
*fname++ = pathbuf; /* tokenize path into vector of names */
while (*++p)
if (*p == ' ' || *p == ':') {
*p = '\0';
while (*++p)
if (*p != ' ' && *p != ':')
break;
if (*p == '\0')
break;
*fname++ = p;
if (fname >= pathvec + PVECSIZ) {
fname--;
break;
}
}
*fname = (char *) 0; /* mark end of vector */
if (cp && *cp && *cp != '/')
if (cgetset(cp) < 0)
return (-2);
dummy = NULL;
i = cgetent(&dummy, pathvec, name);
if (i == 0 && bp != NULL) {
strncpy(bp, dummy, 1023);
bp[1023] = '\0';
if ((cp = strrchr(bp, ':')) != NULL)
if (cp[1] != '\0')
cp[1] = '\0';
}
else if (i == 0 && bp == NULL)
tbuf = dummy;
else if (dummy != NULL)
free(dummy);
/* no tc reference loop return code in libterm XXX */
if (i == -3)
return (-1);
return (i + 1);
}
/*
* Return the (numeric) option id.
* Numeric options look like
* li#80
* i.e. the option string is separated from the numeric value by
* a # character. If the option is not found we return -1.
* Note that we handle octal numbers beginning with 0.
*/
int
tgetnum(id)
char *id;
{
long num;
if (cgetnum(tbuf, id, &num) == 0)
return (num);
else
return (-1);
}
/*
* Handle a flag option.
* Flag options are given "naked", i.e. followed by a : or the end
* of the buffer. Return 1 if we find the option, or 0 if it is
* not given.
*/
int
tgetflag(id)
char *id;
{
return (cgetcap(tbuf, id, ':') != NULL);
}
/*
* Get a string valued option.
* These are given as
* cl=^Z
* Much decoding is done on the strings, and the strings are
* placed in area, which is a ref parameter which is updated.
* No checking on area overflow.
*/
char *
tgetstr(id, area)
char *id, **area;
{
char ids[3];
char *s;
int i;
/*
* XXX
* This is for all the boneheaded programs that relied on tgetstr
* to look only at the first 2 characters of the string passed...
*/
*ids = *id;
ids[1] = id[1];
ids[2] = '\0';
if ((i = cgetstr(tbuf, ids, &s)) < 0)
return NULL;
strcpy(*area, s);
*area += i + 1;
return (s);
}
|
