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2 * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
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6 * "Software"), to deal in the Software without restriction, including *
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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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 SVR4_TERMIO && !defined(_POSIX_SOURCE)
47 #include <term.h> /* clear_screen, cup & friends, cur_term */
50 MODULE_ID("$Id: lib_newterm.c,v 1.57 2002/10/20 00:10:56 Philippe.Blain 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.
69 /* for extended XPG4 conformance requires cbreak() at this point */
70 /* (SVr4 curses does this anyway) */
74 buf = cur_term->Nttyb;
76 buf.c_lflag &= ~(ECHO | ECHONL);
77 buf.c_iflag &= ~(ICRNL | INLCR | IGNCR);
78 buf.c_oflag &= ~(ONLCR);
80 buf.sg_flags &= ~(ECHO | CRMOD);
82 if ((result = _nc_set_tty_mode(&buf)) == OK)
83 cur_term->Nttyb = buf;
89 * filter() has to be called before either initscr() or newterm(), so there is
90 * apparently no way to make this flag apply to some terminals and not others,
91 * aside from possibly delaying a filter() call until some terminals have been
94 static int filter_mode = FALSE;
99 T((T_CALLED("filter")));
104 NCURSES_EXPORT(SCREEN *)
105 newterm(NCURSES_CONST char *name, FILE * ofp, FILE * ifp)
108 int slk_format = _nc_slk_format;
112 T((T_CALLED("newterm(\"%s\",%p,%p)"), name, ofp, ifp));
114 /* this loads the capability entry, then sets LINES and COLS */
115 if (setupterm(name, fileno(ofp), &errret) == ERR)
118 /* implement filter mode */
123 cursor_down = parm_down_cursor = 0;
125 cursor_up = parm_up_cursor = 0;
128 cursor_home = carriage_return;
131 /* If we must simulate soft labels, grab off the line to be used.
132 We assume that we must simulate, if it is none of the standard
133 formats (4-4 or 3-2-3) for which there may be some hardware
135 if (num_labels <= 0 || !SLK_STDFMT(slk_format))
137 if (ERR == _nc_ripoffline(-SLK_LINES(slk_format),
141 /* this actually allocates the screen structure, and saves the
142 * original terminal settings.
146 if (_nc_setupscreen(LINES, COLS, ofp) == ERR) {
147 _nc_set_screen(current);
151 /* if the terminal type has real soft labels, set those up */
152 if (slk_format && num_labels > 0 && SLK_STDFMT(slk_format))
153 _nc_slk_initialize(stdscr, COLS);
155 SP->_ifd = fileno(ifp);
156 typeahead(fileno(ifp));
158 SP->_use_meta = ((cur_term->Ottyb.c_cflag & CSIZE) == CS8 &&
159 !(cur_term->Ottyb.c_iflag & ISTRIP));
161 SP->_use_meta = FALSE;
165 /* Check whether we can optimize scrolling under dumb terminals in case
166 * we do not have any of these capabilities, scrolling optimization
169 SP->_scrolling = ((scroll_forward && scroll_reverse) ||
170 ((parm_rindex || parm_insert_line || insert_line) &&
171 (parm_index || parm_delete_line || delete_line)));
173 baudrate(); /* sets a field in the SP structure */
178 * Check for mismatched graphic-rendition capabilities. Most SVr4
179 * terminfo trees contain entries that have rmul or rmso equated to
180 * sgr0 (Solaris curses copes with those entries). We do this only for
181 * curses, since many termcap applications assume that smso/rmso and
182 * smul/rmul are paired, and will not function properly if we remove
183 * rmso or rmul. Curses applications shouldn't be looking at this
186 #define SGR0_TEST(mode) (mode != 0) && (exit_attribute_mode == 0 || strcmp(mode, exit_attribute_mode))
187 SP->_use_rmso = SGR0_TEST(exit_standout_mode);
188 SP->_use_rmul = SGR0_TEST(exit_underline_mode);
190 /* compute movement costs so we can do better move optimization */
193 /* initialize terminal to a sane state */
196 /* Initialize the terminal line settings. */
199 _nc_signal_handler(TRUE);