Tarball conversion

1 files changed, 389 insertions, 0 deletions

diff --git a/ncurses/tty/lib_vidattr.c b/ncurses/tty/lib_vidattr.c
new file mode 100644
index 0000000..9656b3c
--- /dev/null
+++ b/ncurses/tty/lib_vidattr.c
@@ -0,0 +1,389 @@
+/****************************************************************************
+ * Copyright (c) 1998-2009,2010 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>                         *
+ *     and: Thomas E. Dickey                        1996-on                 *
+ *     and: Juergen Pfeifer                         2009                    *
+ ****************************************************************************/
+
+/*
+ *	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>
+
+#ifndef CUR
+#define CUR SP_TERMTYPE
+#endif
+
+MODULE_ID("$Id: lib_vidattr.c,v 1.61 2010/06/05 22:22:04 tom Exp $")
+
+#define doPut(mode) \
+	TPUTS_TRACE(#mode); \
+	NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx 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 (can_color && (why)) { \
+		int old_pair = PairNumber(old_attr); \
+		TR(TRACE_ATTRS, ("old pair = %d -- new pair = %d", old_pair, pair)); \
+		if ((pair != old_pair) \
+		 || (fix_pair0 && (pair == 0)) \
+		 || (reverse ^ ((old_attr & A_REVERSE) != 0))) { \
+		     NCURSES_SP_NAME(_nc_do_color)(NCURSES_SP_ARGx \
+				     (short) old_pair, \
+				     (short) pair, \
+				     reverse, outc); \
+		} \
+	}
+
+#define PreviousAttr _nc_prescreen.previous_attr
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(vidputs) (NCURSES_SP_DCLx
+			  chtype newmode,
+			  NCURSES_SP_OUTC outc)
+{
+    attr_t turn_on, turn_off;
+    int pair;
+    bool reverse = FALSE;
+    bool can_color = (SP_PARM == 0 || SP_PARM->_coloron);
+#if NCURSES_EXT_FUNCS
+    bool fix_pair0 = (SP_PARM != 0 && SP_PARM->_coloron && !SP_PARM->_default_color);
+#else
+#define fix_pair0 FALSE
+#endif
+
+    newmode &= A_ATTRIBUTES;
+
+    T((T_CALLED("vidputs(%p,%s)"), (void *) SP_PARM, _traceattr(newmode)));
+
+    if (!IsTermInfo(SP_PARM))
+	returnCode(ERR);
+
+    /* this allows us to go on whether or not newterm() has been called */
+    if (SP_PARM)
+	PreviousAttr = AttrOf(SCREEN_ATTRS(SP_PARM));
+
+    TR(TRACE_ATTRS, ("previous attribute was %s", _traceattr(PreviousAttr)));
+
+    if ((SP_PARM != 0)
+	&& (magic_cookie_glitch > 0)) {
+#if USE_XMC_SUPPORT
+	static const chtype table[] =
+	{
+	    A_STANDOUT,
+	    A_UNDERLINE,
+	    A_REVERSE,
+	    A_BLINK,
+	    A_DIM,
+	    A_BOLD,
+	    A_INVIS,
+	    A_PROTECT,
+	};
+	unsigned n;
+	int used = 0;
+	int limit = (max_attributes <= 0) ? 1 : max_attributes;
+	chtype retain = 0;
+
+	/*
+	 * Limit the number of attribute bits set in the newmode according to
+	 * the terminfo max_attributes value.
+	 */
+	for (n = 0; n < SIZEOF(table); ++n) {
+	    if ((table[n] & SP_PARM->_ok_attributes) == 0) {
+		newmode &= ~table[n];
+	    } else if ((table[n] & newmode) != 0) {
+		if (used++ >= limit) {
+		    newmode &= ~table[n];
+		    if (newmode == retain)
+			break;
+		} else {
+		    retain = newmode;
+		}
+	    }
+	}
+#else
+	newmode &= ~(SP_PARM->_xmc_suppress);
+#endif
+	TR(TRACE_ATTRS, ("suppressed attribute is %s", _traceattr(newmode)));
+    }
+
+    /*
+     * If we have a terminal that cannot combine color with video
+     * attributes, use the colors in preference.
+     */
+    if (((newmode & A_COLOR) != 0
+	 || fix_pair0)
+	&& (no_color_video > 0)) {
+	/*
+	 * If we had chosen the A_xxx definitions to correspond to the
+	 * no_color_video mask, we could simply shift it up and mask off the
+	 * attributes.  But we did not (actually copied Solaris' definitions).
+	 * However, this is still simpler/faster than a lookup table.
+	 *
+	 * The 63 corresponds to A_STANDOUT, A_UNDERLINE, A_REVERSE, A_BLINK,
+	 * A_DIM, A_BOLD which are 1:1 with no_color_video.  The bits that
+	 * correspond to A_INVIS, A_PROTECT (192) must be shifted up 1 and
+	 * A_ALTCHARSET (256) down 2 to line up.  We use the NCURSES_BITS
+	 * macro so this will work properly for the wide-character layout.
+	 */
+	unsigned value = (unsigned) no_color_video;
+	attr_t mask = NCURSES_BITS((value & 63)
+				   | ((value & 192) << 1)
+				   | ((value & 256) >> 2), 8);
+
+	if ((mask & A_REVERSE) != 0
+	    && (newmode & A_REVERSE) != 0) {
+	    reverse = TRUE;
+	    mask &= ~A_REVERSE;
+	}
+	newmode &= ~mask;
+    }
+
+    if (newmode == PreviousAttr)
+	returnCode(OK);
+
+    pair = PairNumber(newmode);
+
+    if (reverse) {
+	newmode &= ~A_REVERSE;
+    }
+
+    turn_off = (~newmode & PreviousAttr) & ALL_BUT_COLOR;
+    turn_on = (newmode & ~PreviousAttr) & ALL_BUT_COLOR;
+
+    SetColorsIf(((pair == 0) && !fix_pair0), PreviousAttr);
+
+    if (newmode == A_NORMAL) {
+	if ((PreviousAttr & A_ALTCHARSET) && exit_alt_charset_mode) {
+	    doPut(exit_alt_charset_mode);
+	    PreviousAttr &= ~A_ALTCHARSET;
+	}
+	if (PreviousAttr) {
+	    if (exit_attribute_mode) {
+		doPut(exit_attribute_mode);
+	    } else {
+		if (!SP_PARM || SP_PARM->_use_rmul) {
+		    TurnOff(A_UNDERLINE, exit_underline_mode);
+		}
+		if (!SP_PARM || SP_PARM->_use_rmso) {
+		    TurnOff(A_STANDOUT, exit_standout_mode);
+		}
+	    }
+	    PreviousAttr &= ALL_BUT_COLOR;
+	}
+
+	SetColorsIf((pair != 0) || fix_pair0, PreviousAttr);
+    } else if (set_attributes) {
+	if (turn_on || turn_off) {
+	    TPUTS_TRACE("set_attributes");
+	    NCURSES_SP_NAME(tputs) (NCURSES_SP_ARGx
+				    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);
+	    PreviousAttr &= ALL_BUT_COLOR;
+	}
+	SetColorsIf((pair != 0) || fix_pair0, PreviousAttr);
+    } else {
+
+	TR(TRACE_ATTRS, ("turning %s off", _traceattr(turn_off)));
+
+	TurnOff(A_ALTCHARSET, exit_alt_charset_mode);
+
+	if (!SP_PARM || SP_PARM->_use_rmul) {
+	    TurnOff(A_UNDERLINE, exit_underline_mode);
+	}
+
+	if (!SP_PARM || SP_PARM->_use_rmso) {
+	    TurnOff(A_STANDOUT, exit_standout_mode);
+	}
+
+	if (turn_off && exit_attribute_mode) {
+	    doPut(exit_attribute_mode);
+	    turn_on |= (newmode & ALL_BUT_COLOR);
+	    PreviousAttr &= ALL_BUT_COLOR;
+	}
+	SetColorsIf((pair != 0) || fix_pair0, PreviousAttr);
+
+	TR(TRACE_ATTRS, ("turning %s on", _traceattr(turn_on)));
+	/* *INDENT-OFF* */
+	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);
+#if USE_WIDEC_SUPPORT
+	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);
+#endif
+	/* *INDENT-ON* */
+
+    }
+
+    if (reverse)
+	newmode |= A_REVERSE;
+
+    if (SP_PARM)
+	SetAttr(SCREEN_ATTRS(SP_PARM), newmode);
+    else
+	PreviousAttr = newmode;
+
+    returnCode(OK);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+vidputs(chtype newmode, NCURSES_OUTC outc)
+{
+    SetSafeOutcWrapper(outc);
+    return NCURSES_SP_NAME(vidputs) (CURRENT_SCREEN,
+				     newmode,
+				     _nc_outc_wrapper);
+}
+#endif
+
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(vidattr) (NCURSES_SP_DCLx chtype newmode)
+{
+    T((T_CALLED("vidattr(%p,%s)"), (void *) SP_PARM, _traceattr(newmode)));
+    returnCode(NCURSES_SP_NAME(vidputs) (NCURSES_SP_ARGx
+					 newmode,
+					 NCURSES_SP_NAME(_nc_outch)));
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+vidattr(chtype newmode)
+{
+    return NCURSES_SP_NAME(vidattr) (CURRENT_SCREEN, newmode);
+}
+#endif
+
+NCURSES_EXPORT(chtype)
+NCURSES_SP_NAME(termattrs) (NCURSES_SP_DCL0)
+{
+    chtype attrs = A_NORMAL;
+
+    T((T_CALLED("termattrs(%p)"), (void *) SP_PARM));
+#ifdef USE_TERM_DRIVER
+    if (HasTerminal(SP_PARM))
+	attrs = CallDriver(SP_PARM, conattr);
+#else
+
+    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_PARM->_coloron)
+	attrs |= A_COLOR;
+
+#endif
+    returnChtype(attrs);
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(chtype)
+termattrs(void)
+{
+    return NCURSES_SP_NAME(termattrs) (CURRENT_SCREEN);
+}
+#endif