1 /****************************************************************************
2 * Copyright (c) 1998,1999,2000 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 ****************************************************************************/
37 ** The newterm() function.
41 #include <curses.priv.h>
43 #if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE)
47 #include <term.h> /* clear_screen, cup & friends, cur_term */
50 MODULE_ID("$Id: lib_newterm.c,v 1.46 2000/07/01 22:26:22 tom Exp $")
52 #ifndef ONLCR /* Allows compilation under the QNX 4.2 OS */
57 * SVr4/XSI Curses specify that hardware echo is turned off in initscr, and not
58 * restored during the curses session. The library simulates echo in software.
59 * (The behavior is unspecified if the application enables hardware echo).
61 * The newterm function also initializes terminal settings, and since initscr
62 * is supposed to behave as if it calls newterm, we do it here.
67 /* for extended XPG4 conformance requires cbreak() at this point */
68 /* (SVr4 curses does this anyway) */
72 cur_term->Nttyb.c_lflag &= ~(ECHO | ECHONL);
73 cur_term->Nttyb.c_iflag &= ~(ICRNL | INLCR | IGNCR);
74 cur_term->Nttyb.c_oflag &= ~(ONLCR);
76 cur_term->Nttyb.sg_flags &= ~(ECHO | CRMOD);
78 return _nc_set_tty_mode(&cur_term->Nttyb);
82 * filter() has to be called before either initscr() or newterm(), so there is
83 * apparently no way to make this flag apply to some terminals and not others,
84 * aside from possibly delaying a filter() call until some terminals have been
87 static int filter_mode = FALSE;
96 newterm(NCURSES_CONST char *name, FILE * ofp, FILE * ifp)
99 int slk_format = _nc_slk_format;
102 int t = _nc_getenv_num("NCURSES_TRACE");
108 T((T_CALLED("newterm(\"%s\",%p,%p)"), name, ofp, ifp));
110 /* this loads the capability entry, then sets LINES and COLS */
111 if (setupterm(name, fileno(ofp), &errret) == ERR)
114 /* implement filter mode */
118 if (VALID_NUMERIC(init_tabs))
123 T(("TABSIZE = %d", TABSIZE));
126 cursor_down = parm_down_cursor = 0;
128 cursor_up = parm_up_cursor = 0;
131 cursor_home = carriage_return;
134 /* If we must simulate soft labels, grab off the line to be used.
135 We assume that we must simulate, if it is none of the standard
136 formats (4-4 or 3-2-3) for which there may be some hardware
138 if (num_labels <= 0 || !SLK_STDFMT(slk_format))
140 if (ERR == _nc_ripoffline(-SLK_LINES(slk_format),
144 /* this actually allocates the screen structure, and saves the
145 * original terminal settings.
149 if (_nc_setupscreen(LINES, COLS, ofp) == ERR) {
150 _nc_set_screen(current);
154 /* if the terminal type has real soft labels, set those up */
155 if (slk_format && num_labels > 0 && SLK_STDFMT(slk_format))
156 _nc_slk_initialize(stdscr, COLS);
158 SP->_ifd = fileno(ifp);
159 SP->_checkfd = fileno(ifp);
160 typeahead(fileno(ifp));
162 SP->_use_meta = ((cur_term->Ottyb.c_cflag & CSIZE) == CS8 &&
163 !(cur_term->Ottyb.c_iflag & ISTRIP));
165 SP->_use_meta = FALSE;
169 /* Check whether we can optimize scrolling under dumb terminals in case
170 * we do not have any of these capabilities, scrolling optimization
173 SP->_scrolling = ((scroll_forward && scroll_reverse) ||
174 ((parm_rindex || parm_insert_line || insert_line) &&
175 (parm_index || parm_delete_line || delete_line)));
177 baudrate(); /* sets a field in the SP structure */
182 * Check for mismatched graphic-rendition capabilities. Most SVr4
183 * terminfo trees contain entries that have rmul or rmso equated to
184 * sgr0 (Solaris curses copes with those entries). We do this only for
185 * curses, since many termcap applications assume that smso/rmso and
186 * smul/rmul are paired, and will not function properly if we remove
187 * rmso or rmul. Curses applications shouldn't be looking at this
190 #define SGR0_TEST(mode) (mode != 0) && (exit_attribute_mode == 0 || strcmp(mode, exit_attribute_mode))
191 SP->_use_rmso = SGR0_TEST(exit_standout_mode);
192 SP->_use_rmul = SGR0_TEST(exit_underline_mode);
194 #ifdef USE_WIDEC_SUPPORT
196 * XFree86 xterm can be configured to support UTF-8 based on environment
201 if (((s = getenv("LC_ALL")) != 0
202 || (s = getenv("LC_CTYPE")) != 0
203 || (s = getenv("LANG")) != 0)
204 && strstr(s, "UTF-8") != 0) {
205 SP->_outch = _nc_utf8_outch;
210 /* compute movement costs so we can do better move optimization */
213 /* initialize terminal to a sane state */
216 /* Initialize the terminal line settings. */
219 _nc_signal_handler(TRUE);
221 T((T_RETURN("%p"), SP));