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-rw-r--r--lib/libcurses/tty/lib_vidattr.c273
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diff --git a/lib/libcurses/tty/lib_vidattr.c b/lib/libcurses/tty/lib_vidattr.c
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+++ b/lib/libcurses/tty/lib_vidattr.c
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+/* $OpenBSD: lib_vidattr.c,v 1.1 1999/01/18 19:10:27 millert Exp $ */
+
+/****************************************************************************
+ * Copyright (c) 1998 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. *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ ****************************************************************************/
+
+/*
+ * vidputs(newmode, outc)
+ *
+ * newmode is taken to be the logical 'or' of the symbols in curses.h
+ * representing graphic renditions. The terminal is set to be in all of
+ * the given modes, if possible.
+ *
+ * if the new attribute is normal
+ * if exit-alt-char-set exists
+ * emit it
+ * emit exit-attribute-mode
+ * else if set-attributes exists
+ * use it to set exactly what you want
+ * else
+ * if exit-attribute-mode exists
+ * turn off everything
+ * else
+ * turn off those which can be turned off and aren't in
+ * newmode.
+ * turn on each mode which should be on and isn't, one by one
+ *
+ * NOTE that this algorithm won't achieve the desired mix of attributes
+ * in some cases, but those are probably just those cases in which it is
+ * actually impossible, anyway, so...
+ *
+ * NOTE that we cannot assume that there's no interaction between color
+ * and other attribute resets. So each time we reset color (or other
+ * attributes) we'll have to be prepared to restore the other.
+ */
+
+#include <curses.priv.h>
+#include <term.h>
+
+MODULE_ID("$From: lib_vidattr.c,v 1.21 1998/08/01 22:21:19 tom Exp $")
+
+#define doPut(mode) TPUTS_TRACE(#mode); tputs(mode, 1, outc)
+
+#define TurnOn(mask,mode) \
+ if ((turn_on & mask) && mode) { doPut(mode); }
+
+#define TurnOff(mask,mode) \
+ if ((turn_off & mask) && mode) { doPut(mode); turn_off &= ~mask; }
+
+ /* if there is no current screen, assume we *can* do color */
+#define SetColorsIf(why,old_attr) \
+ if ((!SP || SP->_coloron) && (why)) { \
+ int old_pair = PAIR_NUMBER(old_attr); \
+ T(("old pair = %d -- new pair = %d", old_pair, pair)); \
+ if ((pair != old_pair) \
+ || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
+ _nc_do_color(pair, reverse, outc); \
+ } \
+ }
+
+int vidputs(attr_t newmode, int (*outc)(int))
+{
+static attr_t previous_attr = A_NORMAL;
+attr_t turn_on, turn_off;
+int pair;
+bool reverse = FALSE;
+bool used_ncv = FALSE;
+
+ T((T_CALLED("vidputs(%s)"), _traceattr(newmode)));
+
+ /* this allows us to go on whether or not newterm() has been called */
+ if (SP)
+ previous_attr = SP->_current_attr;
+
+ T(("previous attribute was %s", _traceattr(previous_attr)));
+
+#if !USE_XMC_SUPPORT
+ if (magic_cookie_glitch > 0)
+ newmode &= ~(SP->_xmc_suppress);
+#endif
+
+ /*
+ * If we have a terminal that cannot combine color with video
+ * attributes, use the colors in preference.
+ */
+ if ((newmode & A_COLOR)
+ && (no_color_video > 0)) {
+ static const struct {
+ attr_t video;
+ unsigned bit;
+ } table[] = {
+ { A_STANDOUT, 1 },
+ { A_UNDERLINE, 2 },
+ { A_REVERSE, 4 },
+ { A_BLINK, 8 },
+ { A_DIM, 16 },
+ { A_BOLD, 32 },
+ { A_INVIS, 64 },
+ { A_PROTECT, 128 },
+ { A_ALTCHARSET, 256 },
+ };
+ size_t n;
+ for (n = 0; n < SIZEOF(table); n++) {
+ if ((table[n].bit & no_color_video)
+ && (table[n].video & newmode)) {
+ used_ncv = TRUE;
+ if (table[n].video == A_REVERSE)
+ reverse = TRUE;
+ else
+ newmode &= ~table[n].video;
+ }
+ }
+ }
+
+ if (newmode == previous_attr)
+ returnCode(OK);
+
+ pair = PAIR_NUMBER(newmode);
+
+ if (reverse) {
+ newmode &= ~A_REVERSE;
+ }
+
+ turn_off = (~newmode & previous_attr) & ALL_BUT_COLOR;
+ turn_on = (newmode & ~previous_attr) & ALL_BUT_COLOR;
+
+ SetColorsIf(pair == 0, previous_attr);
+
+ if (newmode == A_NORMAL) {
+ if((previous_attr & A_ALTCHARSET) && exit_alt_charset_mode) {
+ doPut(exit_alt_charset_mode);
+ previous_attr &= ~A_ALTCHARSET;
+ }
+ if (previous_attr) {
+ doPut(exit_attribute_mode);
+ previous_attr &= ~A_COLOR;
+ }
+
+ SetColorsIf(pair != 0, previous_attr);
+ } else if (set_attributes && !used_ncv) {
+ if (turn_on || turn_off) {
+ TPUTS_TRACE("set_attributes");
+ tputs(tparm(set_attributes,
+ (newmode & A_STANDOUT) != 0,
+ (newmode & A_UNDERLINE) != 0,
+ (newmode & A_REVERSE) != 0,
+ (newmode & A_BLINK) != 0,
+ (newmode & A_DIM) != 0,
+ (newmode & A_BOLD) != 0,
+ (newmode & A_INVIS) != 0,
+ (newmode & A_PROTECT) != 0,
+ (newmode & A_ALTCHARSET) != 0), 1, outc);
+ previous_attr &= ~A_COLOR;
+ }
+ SetColorsIf(pair != 0, previous_attr);
+ } else {
+
+ T(("turning %s off", _traceattr(turn_off)));
+
+ TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
+ TurnOff(A_UNDERLINE, exit_underline_mode);
+ TurnOff(A_STANDOUT, exit_standout_mode);
+
+ if (turn_off && exit_attribute_mode) {
+ doPut(exit_attribute_mode);
+ turn_on |= (newmode & (chtype)(~A_COLOR));
+ previous_attr &= ~A_COLOR;
+ }
+ SetColorsIf(pair != 0, previous_attr);
+
+ T(("turning %s on", _traceattr(turn_on)));
+
+ TurnOn (A_ALTCHARSET, enter_alt_charset_mode);
+ TurnOn (A_BLINK, enter_blink_mode);
+ TurnOn (A_BOLD, enter_bold_mode);
+ TurnOn (A_DIM, enter_dim_mode);
+ TurnOn (A_REVERSE, enter_reverse_mode);
+ TurnOn (A_STANDOUT, enter_standout_mode);
+ TurnOn (A_PROTECT, enter_protected_mode);
+ TurnOn (A_INVIS, enter_secure_mode);
+ TurnOn (A_UNDERLINE, enter_underline_mode);
+ TurnOn (A_HORIZONTAL, enter_horizontal_hl_mode);
+ TurnOn (A_LEFT, enter_left_hl_mode);
+ TurnOn (A_LOW, enter_low_hl_mode);
+ TurnOn (A_RIGHT, enter_right_hl_mode);
+ TurnOn (A_TOP, enter_top_hl_mode);
+ TurnOn (A_VERTICAL, enter_vertical_hl_mode);
+ }
+
+ if (reverse)
+ newmode |= A_REVERSE;
+
+ if (SP)
+ SP->_current_attr = newmode;
+ else
+ previous_attr = newmode;
+
+ returnCode(OK);
+}
+
+int vidattr(attr_t newmode)
+{
+ T((T_CALLED("vidattr(%s)"), _traceattr(newmode)));
+
+ returnCode(vidputs(newmode, _nc_outch));
+}
+
+chtype termattrs(void)
+{
+ chtype attrs = A_NORMAL;
+
+ if (enter_alt_charset_mode)
+ attrs |= A_ALTCHARSET;
+
+ if (enter_blink_mode)
+ attrs |= A_BLINK;
+
+ if (enter_bold_mode)
+ attrs |= A_BOLD;
+
+ if (enter_dim_mode)
+ attrs |= A_DIM;
+
+ if (enter_reverse_mode)
+ attrs |= A_REVERSE;
+
+ if (enter_standout_mode)
+ attrs |= A_STANDOUT;
+
+ if (enter_protected_mode)
+ attrs |= A_PROTECT;
+
+ if (enter_secure_mode)
+ attrs |= A_INVIS;
+
+ if (enter_underline_mode)
+ attrs |= A_UNDERLINE;
+
+ if (SP->_coloron)
+ attrs |= A_COLOR;
+
+ return(attrs);
+}
+
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