lib_termcap.c revision 62455 
1/****************************************************************************
2 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc.              *
3 *                                                                          *
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9 * copies of the Software, and to permit persons to whom the Software is    *
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11 *                                                                          *
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13 * in all copies or substantial portions of the Software.                   *
14 *                                                                          *
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16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
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22 *                                                                          *
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24 * holders shall not be used in advertising or otherwise to promote the     *
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28
29/****************************************************************************
30 *  Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
31 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
32 ****************************************************************************/
33
34/* $FreeBSD: head/contrib/ncurses/ncurses/tinfo/lib_termcap.c 62455 2000-07-03 09:38:46Z peter $ */
35
36#include <curses.priv.h>
37
38#include <termcap.h>
39#include <tic.h>
40
41#define __INTERNAL_CAPS_VISIBLE
42#include <term_entry.h>
43
44MODULE_ID("$Id: lib_termcap.c,v 1.36 2000/02/13 01:01:26 tom Exp $")
45
46/*
47   some of the code in here was contributed by:
48   Magnus Bengtsson, d6mbeng@dtek.chalmers.se
49*/
50
51char *UP = 0;
52char *BC = 0;
53
54#ifdef FREEBSD_NATIVE
55#undef	GCC_UNUSED
56#define	GCC_UNUSED
57extern char _nc_termcap[];	/* buffer to copy out */
58#endif
59
60/***************************************************************************
61 *
62 * tgetent(bufp, term)
63 *
64 * In termcap, this function reads in the entry for terminal `term' into the
65 * buffer pointed to by bufp. It must be called before any of the functions
66 * below are called.
67 * In this terminfo emulation, tgetent() simply calls setupterm() (which
68 * does a bit more than tgetent() in termcap does), and returns its return
69 * value (1 if successful, 0 if no terminal with the given name could be
70 * found, or -1 if no terminal descriptions have been installed on the
71 * system).  The bufp argument is ignored.
72 *
73 ***************************************************************************/
74
75int
76tgetent(char *bufp GCC_UNUSED, const char *name)
77{
78    int errcode;
79
80    T((T_CALLED("tgetent()")));
81
82    setupterm((NCURSES_CONST char *) name, STDOUT_FILENO, &errcode);
83
84    if (errcode == 1) {
85
86	if (cursor_left)
87	    if ((backspaces_with_bs = !strcmp(cursor_left, "\b")) == 0)
88		backspace_if_not_bs = cursor_left;
89
90	/* we're required to export these */
91	if (pad_char != NULL)
92	    PC = pad_char[0];
93	if (cursor_up != NULL)
94	    UP = cursor_up;
95	if (backspace_if_not_bs != NULL)
96	    BC = backspace_if_not_bs;
97
98	(void) baudrate();	/* sets ospeed as a side-effect */
99
100/* LINT_PREPRO
101#if 0*/
102#include <capdefaults.c>
103/* LINT_PREPRO
104#endif*/
105
106    }
107
108#ifdef FREEBSD_NATIVE
109    /*
110     * This is a REALLY UGLY hack. Basically, if we originate with
111     * a termcap source, try and copy it out.
112     */
113    if (bufp && _nc_termcap[0])
114	strncpy(bufp, _nc_termcap, 1024);
115#endif
116
117    returnCode(errcode);
118}
119
120/***************************************************************************
121 *
122 * tgetflag(str)
123 *
124 * Look up boolean termcap capability str and return its value (TRUE=1 if
125 * present, FALSE=0 if not).
126 *
127 ***************************************************************************/
128
129int
130tgetflag(NCURSES_CONST char *id)
131{
132    int i;
133
134    T((T_CALLED("tgetflag(%s)"), id));
135    if (cur_term != 0) {
136	TERMTYPE *tp = &(cur_term->type);
137	for_each_boolean(i, tp) {
138	    const char *capname = ExtBoolname(tp, i, boolcodes);
139	    if (!strncmp(id, capname, 2)) {
140		/* setupterm forces invalid booleans to false */
141		returnCode(tp->Booleans[i]);
142	    }
143	}
144    }
145    returnCode(0);		/* Solaris does this */
146}
147
148/***************************************************************************
149 *
150 * tgetnum(str)
151 *
152 * Look up numeric termcap capability str and return its value, or -1 if
153 * not given.
154 *
155 ***************************************************************************/
156
157int
158tgetnum(NCURSES_CONST char *id)
159{
160    int i;
161
162    T((T_CALLED("tgetnum(%s)"), id));
163    if (cur_term != 0) {
164	TERMTYPE *tp = &(cur_term->type);
165	for_each_number(i, tp) {
166	    const char *capname = ExtNumname(tp, i, numcodes);
167	    if (!strncmp(id, capname, 2)) {
168		if (!VALID_NUMERIC(tp->Numbers[i]))
169		    returnCode(ABSENT_NUMERIC);
170		returnCode(tp->Numbers[i]);
171	    }
172	}
173    }
174    returnCode(ABSENT_NUMERIC);
175}
176
177/***************************************************************************
178 *
179 * tgetstr(str, area)
180 *
181 * Look up string termcap capability str and return a pointer to its value,
182 * or NULL if not given.
183 *
184 ***************************************************************************/
185
186char *
187tgetstr(NCURSES_CONST char *id, char **area)
188{
189    int i;
190
191    T((T_CALLED("tgetstr(%s,%p)"), id, area));
192    if (cur_term != 0) {
193	TERMTYPE *tp = &(cur_term->type);
194	for_each_string(i, tp) {
195	    const char *capname = ExtStrname(tp, i, strcodes);
196	    if (!strncmp(id, capname, 2)) {
197		TR(TRACE_DATABASE,("found match : %s", _nc_visbuf(tp->Strings[i])));
198		/* setupterm forces canceled strings to null */
199		if (area != 0
200		    && *area != 0
201		    && VALID_STRING(tp->Strings[i])) {
202		    (void) strcpy(*area, tp->Strings[i]);
203		    *area += strlen(*area) + 1;
204		}
205		returnPtr(tp->Strings[i]);
206	    }
207	}
208    }
209    returnPtr(NULL);
210}
211
212/*
213 *	char *
214 *	tgoto(string, x, y)
215 *
216 *	Retained solely for upward compatibility.  Note the intentional
217 *	reversing of the last two arguments.
218 *
219 */
220
221char *
222tgoto(const char *string, int x, int y)
223{
224    T((T_CALLED("tgoto(%s,%d,%d)"), string, x, y));
225    returnPtr(tparm((NCURSES_CONST char *) string, y, x));
226}
227