Add tracing/debugging code from ncurses 4.1 but don't compile by default.

malloc buffer in hardscroll.c so we don't have oflow worries.
Allow hardscroll.c to compile if SCROLLDEBUG is defined but TRACE is not.

1 files changed, 230 insertions, 0 deletions

diff --git a/lib/libcurses/lib_traceatr.c b/lib/libcurses/lib_traceatr.c
new file mode 100644
index 00000000000..df2c1b22473
--- /dev/null
+++ b/lib/libcurses/lib_traceatr.c
@@ -0,0 +1,230 @@
+
+/***************************************************************************
+*                            COPYRIGHT NOTICE                              *
+****************************************************************************
+*                ncurses is copyright (C) 1992-1995                        *
+*                          Zeyd M. Ben-Halim                               *
+*                          zmbenhal@netcom.com                             *
+*                          Eric S. Raymond                                 *
+*                          esr@snark.thyrsus.com                           *
+*                                                                          *
+*        Permission is hereby granted to reproduce and distribute ncurses  *
+*        by any means and for any fee, whether alone or as part of a       *
+*        larger distribution, in source or in binary form, PROVIDED        *
+*        this notice is included with any such distribution, and is not    *
+*        removed from any of its header files. Mention of ncurses in any   *
+*        applications linked with it is highly appreciated.                *
+*                                                                          *
+*        ncurses comes AS IS with no warranty, implied or expressed.       *
+*                                                                          *
+***************************************************************************/
+
+
+
+/*
+ *	lib_traceatr.c - Tracing/Debugging routines (attributes)
+ */
+
+#ifndef TRACE
+#define TRACE			/* turn on internal defs for this module */
+#endif
+
+#include <curses.priv.h>
+#include <term.h>	/* acs_chars */
+
+MODULE_ID("Id: lib_traceatr.c,v 1.20 1997/05/06 11:07:27 tom Exp $")
+
+#define COLOR_OF(c) (c < 0 || c > 7 ? "default" : colors[c].name)
+
+char * _nc_trace_buf(int bufnum, size_t want)
+{
+	static struct {
+		char *text;
+		size_t size;
+	} *list;
+	static size_t have;
+
+	if (bufnum < 0)
+		bufnum = 0;
+
+	if ((size_t)(bufnum+1) > have) {
+		size_t need = (bufnum + 1) * 2;
+		size_t used = sizeof(*list) * need;
+		list = (list == 0) ? malloc(used) : realloc(list, used);
+		while (need > have)
+			list[have++].text = 0;
+	}
+
+	if (list[bufnum].text == 0)
+	{
+		list[bufnum].text = malloc(want);
+		list[bufnum].size = want;
+	}
+	else if (want > list[bufnum].size) {
+		list[bufnum].text = realloc(list[bufnum].text, want);
+		list[bufnum].size = want;
+	}
+	*(list[bufnum].text) = '\0';
+	return list[bufnum].text;
+}
+
+char *_traceattr2(int bufnum, attr_t newmode)
+{
+char	*buf = _nc_trace_buf(bufnum, BUFSIZ);
+char	*tmp = buf;
+static const	struct {unsigned int val; const char *name;}
+names[] =
+    {
+	{ A_STANDOUT,		"A_STANDOUT" },
+	{ A_UNDERLINE,		"A_UNDERLINE" },
+	{ A_REVERSE,		"A_REVERSE" },
+	{ A_BLINK,		"A_BLINK" },
+	{ A_DIM,		"A_DIM" },
+	{ A_BOLD,		"A_BOLD" },
+	{ A_ALTCHARSET,		"A_ALTCHARSET" },
+	{ A_INVIS,		"A_INVIS" },
+	{ A_PROTECT,		"A_PROTECT" },
+	{ A_CHARTEXT,		"A_CHARTEXT" },
+	{ A_NORMAL,		"A_NORMAL" },
+	{ A_COLOR,		"A_COLOR" },
+    },
+colors[] =
+    {
+	{ COLOR_BLACK,		"COLOR_BLACK" },
+	{ COLOR_RED,		"COLOR_RED" },
+	{ COLOR_GREEN,		"COLOR_GREEN" },
+	{ COLOR_YELLOW,		"COLOR_YELLOW" },
+	{ COLOR_BLUE,		"COLOR_BLUE" },
+	{ COLOR_MAGENTA,	"COLOR_MAGENTA" },
+	{ COLOR_CYAN,		"COLOR_CYAN" },
+	{ COLOR_WHITE,		"COLOR_WHITE" },
+    };
+size_t n;
+unsigned save_nc_tracing = _nc_tracing;
+	_nc_tracing = 0;
+
+	strcpy(tmp++, "{");
+
+	for (n = 0; n < sizeof(names)/sizeof(names[0]); n++) {
+		if ((newmode & names[n].val) != 0) {
+			if (buf[1] != '\0')
+				strcat(tmp, "|");
+			strcat(tmp, names[n].name);
+			tmp += strlen(tmp);
+
+			if (names[n].val == A_COLOR)
+			{
+				short pairnum = PAIR_NUMBER(newmode);
+				short fg, bg;
+	
+				if (pair_content(pairnum, &fg, &bg) == OK)
+					(void) sprintf(tmp,
+						"{%d = {%s, %s}}",
+						pairnum,
+						COLOR_OF(fg),
+						COLOR_OF(bg)
+						);
+				else
+					(void) sprintf(tmp, "{%d}", pairnum);
+			}
+		}
+	}
+	if (AttrOf(newmode) == A_NORMAL) {
+		if (buf[1] != '\0')
+			strcat(tmp, "|");
+		strcat(tmp, "A_NORMAL");
+	}
+
+	_nc_tracing = save_nc_tracing;
+	return (strcat(buf,"}"));
+}
+
+char *_traceattr(attr_t newmode)
+{
+	return _traceattr2(0, newmode);
+}
+
+char *_tracechtype2(int bufnum, chtype ch)
+{
+char	*buf = _nc_trace_buf(bufnum, BUFSIZ);
+char	*found = 0;
+
+    strcpy(buf, "{");
+    if (ch & A_ALTCHARSET)
+    {
+	char	*cp;
+	static const	struct {unsigned int val; const char *name;}
+	names[] =
+	{
+	    {'l', "ACS_ULCORNER"},	/* upper left corner */
+	    {'m', "ACS_LLCORNER"},	/* lower left corner */
+	    {'k', "ACS_URCORNER"},	/* upper right corner */
+	    {'j', "ACS_LRCORNER"},	/* lower right corner */
+	    {'t', "ACS_LTEE"},		/* tee pointing right */
+	    {'u', "ACS_RTEE"},		/* tee pointing left */
+	    {'v', "ACS_BTEE"},		/* tee pointing up */
+	    {'w', "ACS_TTEE"},		/* tee pointing down */
+	    {'q', "ACS_HLINE"},		/* horizontal line */
+	    {'x', "ACS_VLINE"},		/* vertical line */
+	    {'n', "ACS_PLUS"},		/* large plus or crossover */
+	    {'o', "ACS_S1"},		/* scan line 1 */
+	    {'s', "ACS_S9"},		/* scan line 9 */
+	    {'`', "ACS_DIAMOND"},	/* diamond */
+	    {'a', "ACS_CKBOARD"},	/* checker board (stipple) */
+	    {'f', "ACS_DEGREE"},	/* degree symbol */
+	    {'g', "ACS_PLMINUS"},	/* plus/minus */
+	    {'~', "ACS_BULLET"},	/* bullet */
+	    {',', "ACS_LARROW"},	/* arrow pointing left */
+	    {'+', "ACS_RARROW"},	/* arrow pointing right */
+	    {'.', "ACS_DARROW"},	/* arrow pointing down */
+	    {'-', "ACS_UARROW"},	/* arrow pointing up */
+	    {'h', "ACS_BOARD"},		/* board of squares */
+	    {'I', "ACS_LANTERN"},	/* lantern symbol */
+	    {'0', "ACS_BLOCK"},		/* solid square block */
+	    {'p', "ACS_S3"},		/* scan line 3 */
+	    {'r', "ACS_S7"},		/* scan line 7 */
+	    {'y', "ACS_LEQUAL"},	/* less/equal */
+	    {'z', "ACS_GEQUAL"},	/* greater/equal */
+	    {'{', "ACS_PI"},		/* Pi */
+	    {'|', "ACS_NEQUAL"},	/* not equal */
+	    {'}', "ACS_STERLING"},	/* UK pound sign */
+	    {'\0',(char *)0}
+	},
+	*sp;
+
+	for (cp = acs_chars; cp[0] && cp[1]; cp += 2)
+	{
+	    if (TextOf(cp[1]) == TextOf(ch))
+	    {
+		found = cp;
+		/* don't exit from loop - there may be redefinitions */
+	    }
+	}
+
+	if (found != 0)
+	{
+	    ch = TextOf(*found);
+	    for (sp = names; sp->val; sp++)
+		if (sp->val == ch)
+		{
+		    (void) strcat(buf, sp->name);
+		    ch &= ~A_ALTCHARSET;
+		    break;
+		}
+	}
+    }
+
+    if (found == 0)
+	(void) strcat(buf, _tracechar(TextOf(ch)));
+
+    if (AttrOf(ch) != A_NORMAL)
+	(void) sprintf(buf + strlen(buf), " | %s", _traceattr2(bufnum+20,AttrOf(ch)));
+
+    strcat(buf, "}");
+    return(buf);
+}
+
+char *_tracechtype(chtype ch)
+{
+	return _tracechtype2(0, ch);
+}