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
|
.\"***************************************************************************
.\" Copyright (c) 2011-2015,2017 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. *
.\"***************************************************************************
.\"
.\" $Id: term_variables.3x,v 1.9 2017/04/14 08:33:25 tom Exp $
.TH terminfo_variables 3NCURSES ""
.ds n 5
.ie \n(.g .ds `` \(lq
.el .ds `` ``
.ie \n(.g .ds '' \(rq
.el .ds '' ''
.na
.hy 0
.SH NAME
\fBSP\fP,
\fBacs_map\fP,
\fBboolcodes\fP,
\fBboolfnames\fP,
\fBboolnames\fP,
\fBcur_term\fP,
\fBnumcodes\fP,
\fBnumfnames\fP,
\fBnumnames\fP,
\fBstrcodes\fP,
\fBstrfnames\fP,
\fBstrnames\fP,
\fBttytype\fP
\- \fBcurses\fR terminfo global variables
.ad
.hy
.SH SYNOPSIS
.nf
\fB#include <ncursesw/curses.h>\fR
.br
\fB#include <term.h>\fR
.PP
\fBchtype acs_map[];\fR
.sp
\fBSCREEN * SP;\fR
.sp
\fBTERMINAL * cur_term;\fR
.sp
\fBchar ttytype[];\fR
.sp
\fBNCURSES_CONST char * const * boolcodes;\fR
.br
\fBNCURSES_CONST char * const * boolfnames;\fR
.br
\fBNCURSES_CONST char * const * boolnames;\fR
.sp
\fBNCURSES_CONST char * const * numcodes;\fR
.br
\fBNCURSES_CONST char * const * numfnames;\fR
.br
\fBNCURSES_CONST char * const * numnames;\fR
.sp
\fBNCURSES_CONST char * const * strcodes;\fR
.br
\fBNCURSES_CONST char * const * strfnames;\fR
.br
\fBNCURSES_CONST char * const * strnames;\fR
.br
.fi
.SH DESCRIPTION
This page summarizes variables provided by the \fBcurses\fP library's
low-level terminfo interface.
A more complete description is given in the \fBcurs_terminfo\fP(3X) manual page.
.PP
Depending on the configuration, these may be actual variables,
or macros (see \fBthreads\fR(3NCURSES))
which provide read-only access to \fIcurses\fP's state.
In either case, applications should treat them as read-only to avoid
confusing the library.
.SS Alternate Character Set Mapping
After initializing the curses or terminfo interfaces,
the \fBacs_map\fP array holds information used to translate cells
with the \fBA_ALTCHARSET\fP video attribute into line-drawing characters.
.PP
The encoding of the information in this array has changed periodically.
Application developers need only know that it is used for the "ACS_"
constants in <curses.h>.
.PP
The comparable data for the wide-character library is a private variable.
.SS Current Terminal Data
After initializing the curses or terminfo interfaces,
the \fBcur_term\fP contains data describing the current terminal.
This variable is also set as a side-effect of \fBset_term\fP(3X)
and \fBdelscreen\fP(3X).
.PP
It is possible to save a value of \fBcur_term\fP for subsequent
use as a parameter to \fBset_term\fP, for switching between screens.
Alternatively, one can save the return value from \fBnewterm\fP
or \fBsetupterm\fP(3X) to reuse in \fBset_term\fP.
.SS Terminfo Names
The \fBtic\fP(1) and \fBinfocmp\fP(1) programs use lookup tables for
the long and short names of terminfo capabilities,
as well as the corresponding names for termcap capabilities.
These are available to other applications,
although the hash-tables used by
the terminfo and termcap functions are not available.
.PP
The long terminfo capability names use a "l" (ell) in their names:
\fBboolfnames\fP,
\fBnumfnames\fP, and
\fBstrfnames\fP.
.PP
These are the short names for terminfo capabilities:
\fBboolnames\fP,
\fBnumnames\fP, and
\fBstrnames\fP.
.PP
These are the corresponding names used for termcap descriptions:
\fBboolcodes\fP,
\fBnumcodes\fP, and
\fBstrcodes\fP.
.\"
.SS Terminal Type
A terminal description begins with one or more terminal names
separated by \*(``|\*('' (vertical bars).
On initialization of the curses or terminfo interfaces,
\fBsetupterm\fP(3X) copies the terminal names to the array \fBttytype\fP.
.\"
.SS Terminfo Names
.PP
In addition to the variables, \fB<term.h>\fP also defines a symbol for each
terminfo capability \fIlong name\fP.
These are in terms of the symbol \fBCUR\fP,
which is defined
.PP
.nf
.ft CW
#define CUR ((TERMTYPE *)(cur_term))->
.fi
.ft R
.PP
These symbols provide a faster method of accessing terminfo capabilities
than using \fBtigetstr\fR(3X), etc.
.PP
The actual definition of \fBCUR\fP depends upon the implementation,
but each terminfo library provides these long names defined to point
into the current terminal description loaded into memory.
.\"
.SH NOTES
The low-level terminfo interface is initialized using
.hy 0
\fBsetupterm\fR(3X).
.hy
The upper-level curses interface uses the low-level terminfo interface,
internally.
.\"
.SH PORTABILITY
X/Open Curses does not describe any of these except for \fBcur_term\fP.
(The inclusion of \fBcur_term\fP appears to be an oversight,
since other comparable low-level information is omitted by X/Open).
.PP
Other implementations may have comparable variables.
Some implementations provide the variables in their libraries,
but omit them from the header files.
.PP
All implementations which provide terminfo interfaces add definitions
as described in the \fBTerminfo Names\fP section.
Most, but not all, base the definition upon the \fBcur_term\fP variable.
.SH SEE ALSO
.hy 0
\fBncurses\fR(3NCURSES),
\fBterminfo\fR(3NCURSES),
\fBthreads\fR(3NCURSES),
\fBterminfo\fR(\*n).
.hy
|
